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Gan soil detailed classification, performance, and the main effect

Source:

For the silicate mineral montmorillonite, bleaching earth or its mixture.

Attending:

Heat clearing and detoxicating. The main food or mushroom poisoning

“Chinese Materia Medica”: “the Lord of the bacterial toxin. At the end of the hot soup.

Bleaching Earth

The ecological environment:

Tuff or other volcano rock in alkaline water under the action of the alteration and.

The original form:

The montmorillonite

It is earthy. White, gray green or pink. Soapy. Strong water absorption, water absorption and swelling volume with, but in the heating after the loss of moisture absorption. Department of tuff or other volcano rock in alkaline water under the action of the alteration and.

The bleaching clay

A scattered, with a greasy feeling. The light gray color, green gray to nearly black. The powder into the water.

The bentonite

As taking montmorillonite as main component of clay. The monoclinic crystal structure of montmorillonite. Chang Chengyin crystal soil shaped block, sometimes as small scaly, chondrite. White, gray, pink, light green or other color. White stripe. Earthy luster. The naked eye can not see a set of perfect cleavage. The hardness of 1-2. Block softness, smoothness. The relative density of 2-2.7. Water expansion, the volume can be increased by several times, and into a paste. With very strong adsorption and ion exchange capacity.

The character identification:

This product is block shaped, white or grey, some due to impurities and dyed pink. Opaque; earthy luster. Hardness is low, the nail can be carved into the mark. With strong water absorption, lick the suction. The expansion of the water, and then collapse into the fine or powder. With a greasy feel. Micro soil smell, taste light. The color white, creamy feel, with strong suction force is preferred.

Microscopic identification

Polarizing microscope: thin, pale green colorless microstrip. Microcrystalline, cryptocrystalline montmorillonite are uniformly distributed particles and other clay minerals, such as quartz, rock powder and other minerals, grain size below 0.001mm. Microcrystalline montmorillonite often like leaf like, mesh distribution in rocks, local still see plaque, scaly; flake particle size in 0.002mm.

The content of montmorillonite 70%-80%. Other clay minerals: 30%-20% cryptocrystalline quartz, microcrystalline quartz, mica and other microcrystalline mineral content.

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Physical and chemical characteristics of the activated bleaching clay, application, product features and details

Activated bleaching earth is characterized in that the original soil after dry cleaning or not separation, ensure the attapulgite content of more than 30%, after breaking with dilute acid solution pre heating, activation, at room temperature under mixed boundary without heating, through the method of heat cold acid activation and activation, drying, crushing granulation becomes less than 200 activated bleaching earth product.

Activated Bleaching Clay

 

Product details:

Activated bleaching earth appearance is grey white powder, insoluble in water, oil and organic solvent. With higher efficiency, fast filtering speed, low residual oil rate.

This product can greatly reduce the oil industry, oil production costs, compared with similar products, the amount can be reduced by about 5%, the residual oil and the filtering speed, reduce the rate of filter cake, can completely replace the activated bleaching clay. New decolorization products is a good performance, low price.

Product use:

Lubricating oil, oil refining chemical industry 1, the residual carbon in the lubricating oil in the value, ash, water soluble acid reduced extremely trace, to improve its durability and enhance its ability to resist corrosion.

2, the edible oil industry, for the removal of all kinds of pigment in the oil, and taste, and ion (K +); adsorption, aflatoxin and other harmful substances separation.

3, activated clay industry, mainly for cattle, sheep to make soap and other products of decolorization.

Product features:

The ion exchanged montmorillonite and acid activated the interlayer (calcium, magnesium, potassium, sodium and so on) position by small diameter ion substitution and stripping, the crystal ends pore increases, larger specific surface area. At the same time, because the substitution of hydrogen ion on eight sides or tetrahedral polyvalent ions, resulting in more negative electricity. The acid treated montmorillonite activation becomes activated clay has strong adsorption ability.

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Details Decolourising Earth with bleaching earth and soil-related Products

Sepiolite has large surface area and porous structure, and the existence of adsorption and chemical adsorption. Therefore, it has the characteristics of excellent decolorization, then in the paraffin wax, oil, mineral oil and vegetable oil decolorization process, is often used as a bleaching agent, a neutralizing agent, deodorant and dehydrating agent. And because of its surface can be produced on the adsorption and adsorption, thus can improve the stagnant fluid in its surface area ratio, as anti gelling agent and self agent, can control the mixture of humidity or covering liquefied products surface. The special status of sepiolite adsorption and particle, produce porous irregular network layer structure, which has the ability to filter, so, as a filter aid is very applicable. In the process of decolorization of glucose, together with it, and can be used as a clarificant.

Decolourising Earth

Characteristic.

1, without filter cloth, filter paper, greatly reduce the cost of filtration.

2, full closed operation, environmental protection, no material loss.

3, vibration or greatly reduce the labor intensity and Decolourising Earth.

4, pneumatic valve discharge, greatly reduce the labor intensity of workers.

5, in the liquid slag or activated carbon (Bai Tu) filter or filtration, can completely replace the plate and frame filter, filter equipment industry is preferred.

Two sets of equipment can also be used in parallel, one use, alternate or regeneration, can realize continuous closed production, improve product quality, and can improve the production environment.

In the filtering equipment can be added later Bentonite is the filter bag, and plate sealed filter matched filtering precision, ensure the filtrate.

Properties of sepiolite decolorization soil

1, strong adsorption capacity, the decolorization rate high, with a low rate of oil, filtration speed, add less;

2, can effectively remove oil total phospholipid, soap and trace metal ions, can be used as natural antioxidants;

3, to remove the oil in aflatoxin, pesticide residues and other toxins and odor;

Acid number 4, after bleaching not rise, do not back color, clear and transparent, stable quality, long shelf life.

Refining production 5, especially suitable for mineral oil, vegetable oil, animal oil.

Technical parameters:

The decolorization rate (%): ≥ 115 free acid (%): ≤ 0.20

Item: 200 eyes (sieve margin ≤ 5) moisture content (%): ≤ 11

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The new Activated Bleaching Earth product advantages compared with conventional Activated Bleaching Earth, and other performance advantages

One of the bentonite activated clay belongs to the deep processing of products, to fill the gaps in our province. In the production process using the acid recycling technology and extrusion process to add special additives, effectively improves the product quality, product performance is close to America TONSIL particulate clay index.

Activated Bleaching Earth

Activated clay production method of bentonite as raw material of activated clay production bentonite as raw material are all wet, dry, semi wet, vapor phase method, calcination etc.. The conventional wet is bentonite, sulfuric acid, water after mixing in the case of mixing heated to 100 activation for a period of time after washing, drying, crushing to obtain the product. Disadvantages of this method is the largest consumption of acid, resulting in washing water consumption, serious environmental pollution, high cost. The following steps: processing; the original soil beating, purification and emission sand and water; adding acid and water, in the range of 80 ~ 100 ℃ activation of 10 – 30min, and at the same time, 1000r/min and stirring; filtering, filtrate recycling and refining purification step, the filter residue to the next step; drying, crushing; finished product testing, packaging. Dry the traditional production process is a small amount of sulfuric acid and water and Activated Bleaching Earth  mixture and stir well, for a period of time, then drying, grinding to obtain the product. Although this method reduces the consumption of acid, no waste water discharge, the pollution of the environment, but the quality of the products is low, which greatly limits its use.

The following steps: processing; adding acid and water extrusion method at room temperature solid phase activation; drying and crushing; finished product testing, packaging. The production process and semi wet is a small amount of sulfuric acid and water and bentonite mixture and stir well, activated under certain temperature (placed) for a period of time, then adding acid and water and then a second step activation.

The following steps: processing; adding acid and water at room temperature solid state extrusion method activation; adding acid and water activation; rinsing; filtering; drying, crushing; finished product testing, packaging. The production process and semi wet it can solve some problems of the wet and dry, simple process, low cost, high product quality.

The main technical indexes of activated clay:

1, appearance: white or light coloured fine powders

2, water: ≤ 12%

The decolorizing capacity: 3, ≥ 154

4, activity: ≥ 180mol/kg

5, size (by 200): 95%

6, free acid: ≤ 0.20%

7, the content of heavy metal (Pb): 10mg/kg

8, the arsenic content: ≤ 3mg/kg

Products are mainly used in grease (refining decolorization dynamic, vegetable oil), chemical (soap), Sinopec (lubricating oil, paraffin, naphthene acid etc.), pharmaceutical and other industries. The quality of the products exceeded the national standard, the performance is stable, with a low rate of oil, high decolorization ability, add less, particle size uniformity, filtration speed.

http://www.xybleachingearth.com

Details Decolourising Earth, the principle statement, performance characteristics and main parameters

Summary.

Bleaching clay is the attapulgite clay as raw material with natural adsorption effect, the application of high-tech means and refined efficient special “decolorization, deodorization, detoxification” decolorizing adsorbent.

This product is white powder, composition of bulk, greasy feeling, non-toxic, odorless, tasteless, does not dissolve in water, organic solvent, oil and fat, the surface has many irregular cavities, layered molecular structure, large specific surface area, with the exchange capacity of adsorption and ion, adsorption nonferrous materials, organic matter and some minerals, and has catalytic properties.

Decolourising Earth

Calcium base bentonite bleaching earth to magnesium rich as raw material, the acidification process and refined, is larger than the activation of acid center surface area and more, so the catalytic and adsorptive ability.

The chemical composition of SIO2, AL2O3, Fe2O3 etc..

Package and storage:

50kg plastic bags, stored in ventilation, cool and dry place, prevent mechanical impact, anti rain.

Product features:

1, have a wide range of decolorization, adsorption and purification, had strong adsorption of pigments and impurities.

2, the use of this Decolourising Earth is very simple, no need to change the original production process. The decolorization and purification of salad oil, acid value is low, saves the dehydration process, and the filtration speed, low oil; liquid glucose after purification, color white, transparent carbon free acidity, sugar storage.

3, after the filtration cake (vegetable oil, animal fat) can use, no pollution of the environment.

In 4, aflatoxin B1, concentration of 200PPb, active attapulgite can 100% removal, ensure the safety and health of edible oil.

Parameters:

Decolorization of ≥ 150;

Active degree ≥ 150;

Free acid (H2SO4) ≤%0.2;

Particle size (200 mesh) ≥%90;

Water ≤%12

Performance characteristics:

This product is the use of non metallic mineral resources of rare &#65533 China; D� D composite clay as raw material, through special processing is made. The appearance of grey white powder, insoluble in water, oil and organic solvent. With higher efficiency, fast filtration velocity, residual oil rate is low.

The product can greatly reduce oil production costs, compared with similar products, the amount can be reduced by about 5%, the residual oil and the filtering speed, reduce the rate of filter cake. Can completely replace the activated carbon and activated clay. New decolorization products is a good performance, low price.

http://www.xybleachingearth.com

Bleaching clay and hemodialysis in the treatment of paraquat poisoning Clinical Experience

Cause:

Nearly 3 years of emergency department treated a total of 20% oral paraquat poisoning patients in 26 cases, oral dose of 50 ~ 200 ml, including 8 male cases, 18 female cases, the age is the smallest 14 years old, the biggest 76 years old, average 36 years old. After the poisoning to the short time of 13 min, the long time is 78 H. Among them

10 cases of patients outside the hospital to hospital days, the shortest was 8 days, the longest 32 days, average 19 days of hospitalization. 8 patients died in hospital (3 case died of pulmonary interstitial fibrosis, and 5 patients died of multiple organ failure), accounting for 30.7%, 8 cases of death were not at the same time, the use of bleaching earth and hemoperfusion and hemodialysis. The remaining patients were used bleaching clay intragastric injection or oral, and adopts the blood perfusion / hemodialysis, 15 patients cured, improved and request to leave the hospital in 3 patients, the success rate of rescue 69. 2%.

Bleaching Clay

Treatment methods

For patients within 24 h were given 1%NaHCO3 gastric lavage paraquat (PQ may be alkaline hydrolysis), until the gastric lavage liquid clean, colorless, tasteless so far. The patients had different degree of vomiting in this group of 26 patients with paraquat poisoning, available ondansetron 8 mg or vitamin B6 10 mg intravenous injection control vomiting, if accompanied by facial and skin medicine traces should be cleaned immediately, gastric lavage after bleaching clay 15% to 300 ~ 350 ml or 2 activated carbon g/kg allows patients to oral or directly through the tube into the stomach, each of the 4 h 1 times, until the stop cinereous stool after discharge. At the same time, since the tube injection 20% mannitol 250 ml, should also be cleaning enema, after 2 h in non dialysis relative contraindications (shock or hypotension, blood pressure less than 80 mmHg, severe myocardial lesions lead to pulmonary edema, heart failure, severe arrhythmia, serious bleeding or hemorrhage, malignant tumor, the extreme failure of psychiatric patients, not cooperation with, or family member and I don’t agree with hemodialysis) under the premise, given hemoperfusion hemodialysis alleviate poison on / toxicity of kidney, in order to reduce the paraquat on oral mucosa and tongue body damage can be give

NaHCO3 solution gargle 0.5%, every time 50 ml, 4 h 1, at the same time with plenty of vitamin C 6 to 8 g/d, eliminating oxygen free radicals, dexamethasone injection 10 ~ 20 mg/d prevention and treatment of pulmonary interstitial fibrosis, protect the digestive tract injury in gastric parietal cells of large area available proton pump inhibitors omeprazole 40 mg, 2 times per day 1 ~ however, the drug allergies are disabled, all drugs should avoid the damage to liver and kidney function, at the same time should closely observe respiratory function, can also be used Human Albumin nutrition respiratory muscle, if there should be timely respiratory failure mechanical ventilation, and maintain water balance

Prevention and treatment of complications:

The main complications of paraquat poisoning for direct damage, gastrointestinal interstitial pulmonary fibrosis, liver and kidney damage and early use of bleaching earth let patients by oral or nasogastric tube into the stomach to paraquat was inactivated, timely use of hemoperfusion and hemodialysis, promote the excretion of toxic substances, pay attention to oral nursing, avoid drug use is toxic to the liver and kidney are very important

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Activated Bleaching Clay craftsmanship, bleaching and activation operations

Activated clay is a clay (mainly bentonite) as raw material, the inorganic acid, followed by water rinsing, drying adsorbent made of, look for the milky white powder, odorless, tasteless, non-toxic, strong adsorption, can adsorb colored material, organic matter. Easy to absorb moisture in the air, place too long will reduce the adsorption properties. However, heated to 300 degrees Celsius above began to lose water of crystallization, is the change in structure, effects of fading effect. Senior activated clay products, products for the gray white, pink or white powder or granular, non-toxic and tasteless, insoluble in water, easy to absorb moisture; with larger specific surface area and more active acid center, so the catalytic and adsorptive ability strong, so not only have decolorization ability better, at the same time activity the degree is high, the low rate of oil, filtering speed, is the most ideal bleaching agent.

Use of activated clay widely, in animal and vegetable oil refining industry for the decolorization and purification; in the petroleum industry, used for petroleum resin, wax, paraffin oil, kerosene decolorization and purification; paper industry for paper dyes, dye, fill oil. As a fire extinguisher powder in forestry and water and soil conservation, binder hond elimination of oil in water; used as a catalyst and catalyst carrier in chemical industry, carrier insecticides, pesticides and fungicides, rubber and plastic filler, desiccant and filtering agent, adsorbent radioactive waste; in water purification and sewage treatment as absorbent and flocculant. The use of appropriate heating (80 to 100 degrees) resurrection, if heated to 300 degrees above began to lose water of crystallization, structure change, affecting decolorization.

http://www.xybleachingearth.com/datacache/pic/274_260_fb161daae5ab996a8757bf2ec525298a.jpg

CA bentonite as raw material, using sulfuric acid as activator, on activated clay production process was studied by orthogonal experiment, and the optimum technological conditions are determined according to the performance of activated product activation. The results show that, the main factors affecting the decolouring ratio as the acidity, liquid to solid ratio, temperature and activation time. Under the optimum conditions, the decolorization of activated clay rate can reach more than 90%.

Key acid clay variable Activated Bleaching Clay is activation of bentonite:

Activation operation 1, bentonite, generally used in sulfuric acid as activator, sulfuric acid consumption in the range 5-25%, liquid to solid ratio in 2-5:1, activation temperature of around 95, the activation time of 4-8 hours.

2, washing acid: bentonite slurry activated containing excess acid, the impact of product use, must be washed to remove, acid reaches the standard. Generally use the rinsing solution acid, each time the amount of water is about 10 times as large as the material, fully stirring settlement) 1-2 hours, the supernatant was removed, rinse 3-5 times, so that the final rinse solution of pH of 4-5.

3, solid-liquid separation and drying

Contain a lot of water slurry after washing, filtration or centrifugal way by dehydration, electric heating drying oven drying, the general temperature at around 105, 2-3 hours.

4, crushing and classification

The dried material agglomeration is more, has a certain hardness, need grinding sieve, obtained for activated clay products, sealing packing.

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Production processes, product performance Fullers Earth and the main performance characteristics

The characteristics of the treated oil decolorizing clay:

1, less loss of oil, pure taste, color reaches gb. Deodorant cleaning out the oil decolorization, the slag ratio is less than using the old methods of wash oil slag rate. The refined diesel color not only reduction, and placed the longer, its color instead of the more clear, more bright, very clear. The taste is pure oil.

2, low cost, wide range of application. Because the slag is less, so the cost is reduced correspondingly. The agent can not only wash with crude oil refining the small refinery, can handle the lubricating oil, vacuum first, second oil, waste oil refining diesel and for the old ways can not wash out the oil, suitable for a wide range of.

3, labor saving, time saving, labor saving, greatly improve the cleaning work rate, without heating, pressurizing, convenient operation. With oil decolorization in addition to taste agent than the old way of improving the efficiency of 2-3 times, greatly saves time, and solves the problem of wash oil cold old methods do not separate, can be long-term production.

4, to solve the problem of waste treatment, using waste residue, the elution is not bonded, non caking, no solidification, waste reuse. If the sales, than the waste old way to wash out more money, solve the problem of environmental protection.

Fullers Earth

In the edible and non edible oils and fats in the industrial production of bleaching earth, so-called used to remove from crude oil and fat colored and colorless pigment. Purification of the process of the adsorption attempt, oil and fat color and stability may substantially increase. Bleaching earth different types may be used to purify. The first group is composed of a high performance bleaching clay called (HPBE) formation. Strong mineral acids in HPBE by boiling temperature about the acid under leaching bentonite production. In order to obtain high performance bleaching earth, concentrated acid typically used to dry the starting clay matter basis of about 60 to 90 weight%. In the filtration of aluminum ions at the same time, other metal ions from the clay structure and the acid dissolved away. After the filter is formed in the activation period of salts, the acid must be separated from the products of clay by filtration, and the residual acid must be removed from the clay through sufficient washing. If the residual acid high level has been left in clay, quality of the bleached oil weakened. High level of residual acid adverse acid from fatty acid triglycerides in the oil free fat. During the acid leaching of clay, clay and residues from waste containing ionic salts. Such waste liquid must be by precipitation or further such as sewage treatment method to neutralize.

Advantages of the new type of Fullers Earth with high bleaching activity, which may be through the use of acid surface treatment has been further strengthened, for example by spraying acid solution to the clay material. Because of its high bleaching bleaching earth activated only a small amount of added to the oil to purify the purification degree required. In addition to the high efficiency of bleaching, bleaching clay is suitable for massive application should also provide high filtration efficiency and high capacity efficiency. High filtration efficiency of bleaching in a reasonable time period after the oil filter is very important. High efficiency of the remaining oil holding loss minimization in bleaching clay used in the oil is very important. In order to get the optimal bleaching earth, these three qualifications must meet all. Activated bleaching efficiency, filtration efficiency and capacity efficiency can be merged into bleaching clay allows evaluation of the total efficiency. Suitable for bleaching earth mass bleaching oil should therefore form a high total efficiency.

Packaging and storage: the inner layer of plastic film used bleaching clay, outer plastic woven bag two layers of packaging or according to user requirements for packaging. Packing weight 25 ± 0.25kg\50 ± 0.5kg or car, in bulk or according to user requirements. Store in a cool, ventilated, dry place.

Our company activated clay is made of high quality bentonite as raw material, and the use of today’s advanced production technology, to ensure that the production of activated clay quality, quality stability. Products not only in the Chinese enjoys high reputation and market share, and the products are exported to overseas, established a stable sales network at home and abroad.

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Various technical parameters of bleaching earth, nature, characteristics, uses and future development

Common minerals include feldspar, gypsum, calcite, quartz and the incomplete decomposition of volcano tuff material. General pink, white, yellowish, grayish green color. The appearance of colloidal, low hardness, immersed in water to swell, no plastic, low refractoriness. Often the tuff or volcano rock in sea water or groundwater, by weathering in alkaline medium (pH=7-8.5) environment of deposition. Because it has strong absorbency and water swelling, so use in petrochemical fields, such as used in petroleum, oil, sugar, wine making, paper making, textile and other industries as a purifying agent and bleaching agent.

This product can greatly reduce the oil industry, oil production costs, compared with similar products, the amount can be reduced by about 5%, the residual oil and the filtering speed, reduce the rate of filter cake, can completely replace the activated carbon. New decolorization products is a good performance, low price.

Bleaching Earth

Bleaching clay silicate clay mineral is a layered structure, lamellae, named for its first found in the French city of the popular name of montmorillonite, kaolin.

bleaching earth mineral is a kind of natural nano structure of inorganic macromolecular silicate polymer. The family has 11, the composition of (Na, Ca) 0.33 (Al, Mg) 2[Si4O10] (OH) 2? NH2O, consists of two layers of top silicon oxygen tetrahedron sheet connected with a layer of Aluminum Co edge connection (magnesium) oxygen (oxygen) in eight face plates containing type 2:1 water of crystallization structure, is one of the mineral clay minerals in the crystal structure of the variance, the experimental diffraction slow scan results show that natural nano materials.

And have unique physical and chemical properties due to its special structure characteristics, enjoy the “universal material” reputation.

Volatile: ≤ 4%

Moisture: ≤ 2%

Properties: white or light yellow powder. Light and soft, creamy feel. The main components of magnesium silicate and aluminosilicate. Has strong adsorption. Absorption of moisture in the air, very easy to grind into fine powder. Insoluble in water

Biochemical studies. Decoloring agent for refining oil and vegetable oils.

Product use:

Lubricating oil, oil refining chemical industry 1, the residual carbon in the lubricating oil in the value, ash, water soluble acid reduced extremely trace, to improve its durability and enhance its ability to resist corrosion.

2, the edible oil industry, for the removal of all kinds of pigment in the oil, and taste, and ion (K +); adsorption, aflatoxin and other harmful substances separation.

3, daily chemical industry, mainly for cattle, sheep to make soap and other products of decolorization.

Product features:

The ion exchanged montmorillonite and acid activated the interlayer (calcium, magnesium, potassium, sodium and so on) position by small diameter ion substitution and stripping, the crystal ends pore increases, larger specific surface area. At the same time, because the substitution of hydrogen ion on eight sides or tetrahedral polyvalent ions, resulting in more negative electricity. The acid treated montmorillonite activation becomes activated clay has strong adsorption ability.

http://www.xybleachingearth.com

Production status of activated clay, and on how to deal with

Activated clay is a clay (mainly bentonite) as raw material, the inorganic acid, followed by water rinsing, drying adsorbent made of, look for the milky white powder, odorless, tasteless, non-toxic, strong adsorption, can adsorb colored material, organic matter. Easy to absorb moisture in the air, place too long will reduce the adsorption properties. However, heating above to 300 ℃ began to lose water of crystallization, the structure changes, effects of fading effect. Activated clay is insoluble in water, organic solvents and oils, almost completely soluble in hot caustic soda and hydrochloric acid, the relative density of 2.3-2.5, in water and oil swelling minima.

Activated clay China manufacturer about 40, annual output of about 420000 tons. Device for producing ability is 50000 t/a. Activated clay production mainly concentrated in the northeast, North China, East China, production accounted for over 70% of the country.

Activated Clay

Raw material

In the past people only know of bentonite used as activated clay raw material, actually otherwise, mineral soil with clay properties can be used as the raw material of activated clay. Hunan recently made by sepiolite activated clay, Zhejiang also found that b axis disordered kaolinite can also produce activated clay, Shandong successfully developed with water purifying agent residue as raw material of activated clay. Thus, active clay raw materials more widely. But the activated clay we usually refers to the activated clay with bentonite as raw material.

Bentonite ore grinding to a certain size, can thoroughly and acid activated bentonite mining ground water, high, soft without drying, using direct high-speed beating or wet ball milling, low power consumption.

The deep excavation of the bentonite, as hard as a stone, not dispersed in water, wet beating or cost is much higher than that of wet milling, drying and Raymond mill. The water in the < 20% conditions, to focus on the improvement of drying and milling equipment. Raw material moisture activated clay is less than 15% will be able to use. Adsorption of water only removed 5% of the milling process. The hot flue gases into the Raymond mill, the production cost is much lower than the wet mill.

Manufacturing method of activated clay

Activated clay production process of bentonite as raw material are all wet, dry, semi wet, vapor phase method, calcination etc.. The conventional wet is bentonite, sulfuric acid, water after mixing in the case of mixing heated to 100 ℃, the activation of a period of time after washing, drying, crushing to obtain the product. Disadvantages of this method is the largest consumption of acid, resulting in washing water consumption, serious environmental pollution, high cost. Dry the traditional production process is a small amount of sulfuric acid and water and bentonite mixture and stir well, for a period of time, then drying, grinding to obtain the product. Although this method reduces the consumption of acid, no waste water discharge, the pollution of the environment, but the quality of the products is low, which greatly limits its use. The production process and semi wet is a small amount of sulfuric acid and water and bentonite mixture and stir well, activated under certain temperature (placed) for a period of time, then adding acid and water and then a second step activation. The production technology of semi wet method can solve some problems of the wet and dry, simple process, low cost, high product quality. Generally speaking, the production technology of semi wet than the traditional process of acid consumption is reduced by 1 / 2-2 / 3, water consumption is reduced by 1 / 2-2 / 3, less waste water, a treatment that is no environmental pollution, low cost, under the same conditions, the quality of the products increased by 30% compared with the traditional method for decoloring capacity. Vapor phase technique in pressure thermal vapor to water, acids, soil and dry mix, between static by vapor phase, liquid phase, solid phase was acidified reacted furiously to form semi dry granular acidification, a kind of new technologies by rinsing processes for preparation of activated clay. The technical advantages of the existing legal system of dry and wet clay and calcination method of activated white clay production technology as a whole, has a good practical value, provides a new technology for activated clay produced in china. The technology and traditional wet preparation of activated clay process has the following advantages: compared with acid and water consumption were reduced by about 50%, the production cycle is shortened 1 / 2-1 / 3; light pollution, and easy to control; covers an area of small, high utilization rate of equipment, less investment, quick effect, and in close connection with the existing wet process process and equipment. According to different processes, activated clay can be aluminum, silicon and aluminum sulfate white sodium sulfate, gypsum etc..

China bentonite Professional Committee of the expert group to Kong Bingyan on activated clay production process and equipment optimization optimization scheme, this scheme satisfies the quality of produced competitive products; investment; mechanical equipment operation and repair cost is low; environmental protection. In short production to lower cost.

The production process of activated clay has three problems to be solved: (1) there are certain selectivity to the original bentonite, not all of the different types of bentonite can produce efficient the decolouring ratio ≥ 90%, or some type of bentonite could produce ordinary activated bleaching earths rate greater than 80% – 85% or semi activated clay. Activity index is still not up to H (high activity of activated clay) on the activity of requirements. So the range of its use are subject to some limitations. (2) treatment of acidic wastewater, the lime dosage is too large. (3) oil absorption rate. The decolouring capacity of heavy oil 2% – 5%. The oil was decolorized with clay, inevitably entrained oil, entrainment is activated clay was 20% – 50%, thereby increasing the coke consumption and cost. At present, a few enterprises by leaching is separated from the active waste clay in oil, but after the separation of the oil from clay, color is black, not decolouring good color. Therefore, domestic oil bleaching department wants to use oil absorption of activated clay small.

Application of activated clay

In the range of application, active clay than the surface area, the adsorption capacity, the decolorizing efficiency is high, and the activity degree is low, do not react chemically with the grease and other chemical substances. For the filtration rate of decolorization of liquid quickly, the residual liquid rate is low, such as edible oil, sugar decolorization decolorization. Edible oil bleaching products used for the decolorization of all kinds of vegetable oil, animal oil and mineral oil, such as soybean oil, rapeseed oil, peanut oil, cottonseed oil, sunflower oil, palm oil, etc.. Sugar decoloring agent products with rich majorite purification refined sugar, its colour and lustre, reducing sugar content, pH, ion content, thionyl chloride ion content, protein content, sugar boiling temperature and calcium and magnesium ions content reached the current standard, save the decolorization treatment costs about 60%. Environmental odor absorbing agent has good adsorption odor, odor can eliminate the refrigerator, pet bedroom, toilet and other places. After bleaching liquid is transparent and clear, stable quality, no smell. After using the product, after proper treatment can be used for the two time, it will not cause environmental pollution. Also can be used for moisture desiccant, internal medicine alkali antidote, vitamin A, B adsorption agent, lubricating oil contact contact agent, the gasoline vapor refining agent, as well as the raw material in the temperature of polymerization catalyst, high temperature polymerization agent and manufacturing of particulate clay. In addition, active clay can also be used for carbonless copy paper chromogenic agent.

Activated clay is another important use is the preparation of particulate clay.

Particulate clay is the activated clay as the main raw materials by chemical processing and become, the appearance of unshaped granular activated clay, it has higher specific surface area, has a very high adsorption capacity, widely used in petrochemical industry, aviation kerosene refining, aromatics extraction, mineral oil, animal and vegetable oil, wax and organic liquid decoloration refining, but also for refined oil, base oil, diesel oil, residual olefins, glial, Li Qing, and other impurities removing basic nitrogen compounds.

Clay particles can also be used as a moisture desiccant, internal medicine alkali antidote, vitamin A, B adsorption agent, lubricating oil contact contact agent, the gasoline vapor refining agent, can also be used as a temperature of polymerization catalyst, high temperature polymerization agent.

At present, non-toxic, no entrainment, oil absorption rate is small, can be used for edible oil decoloration refining and not in the petroleum catalysis reaction medium discoloration caused by particulate clay is hot demand.

At present, China clay particles mainly Ling’an Fulong adsorbent factory several manufacturers in the production, mainly non water resistant clay particles, decolorizing capacity, good activity, can basically meet the domestic needs of aromatic industries.

Used for clay particles and petrochemical industry aromatic stock must be activated clay produced by traditional process, dry process production or use attapulgite compound cannot meet the requirements of production.

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