Monthly Archives: May 2014

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.

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


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


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.

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


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.


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.

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


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

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.

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.