Tag Archives: bleaching earth

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


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.


Details of the use of bentonite

Bentonite is widely used:

1 casting industry

Casting bentonite is the largest user of bentonite, the annual amount of 1100000 tons.

Bentonite used in casting is mainly applied to the clay bonded sand, because bentonite has strong adhesion, high plasticity, good air permeability characteristics of stripping, stable physical and chemical properties, such as high temperature and wet conditions. Clay bonded sand for molding material production casting process, this is a long history, thriving in a variety of chemical bonded sand today, clay wet sand is still the most important molding material, its applicable scope, consumption of large, is any other material can not be compared to. High pressure molding, injection molding, molding, static modeling and non shock pressure vacuum process modeling in modern times, also is to use the clay wet sand as the premise, the ability to adapt to the other conditions of the clay wet sand strong. Casting bentonite mainly sodium bentonite and calcium sodium bentonite two, sodium bentonite is made from natural sodium bentonite or artificial Na bentonite processing, with its good reusability and the wet compression strength is high and the foundry industry are welcome. Because of good plasticity, can prevent the scab, scab, dropping block, sand mold collapse, and the molding cavity strong, high strength, convenient metal industry casting wet or dry mold, sand binder precision casting is preferred. Calcium sodium bentonite from natural calcium base bentonite processing, is widely used in light of casting sand binder. The utility and sand casting convenient and popular with users. Compared with other binder, bentonite has an important characteristic, is that it has certain heat capacity. As long as the heating temperature is not too high, the removal of free water bentonite as long as water, still can restore the adhesive ability. Binding capacity of bentonite in water can be manifested only after. Bentonite lose the binding ability, also with its dehydration. So far, that of bentonite in the water has three forms: a water free water, granular bentonite adsorbed water, heated to 100 ℃, can remove free water, removing free water bentonite, adhesive ability was not affected by the two kinds of water is strong; combined with water, long time heating at 110 ℃, bentonite can be removed completely free water, but does not remove firmly bound water. Has been completely removing free water bentonite, then at a higher temperature (200 ℃, 300 ℃) heating will continue to lose weight, there is still water loss. Bentonite by heating after dehydration, just add water, can completely recover bonding ability; three kinds of water is crystal water, also known as the structure of water. The lattice water to some or all removed only in high temperature. Lattice water removing swelling water, that the loss of binding capacity, become dead clay. Different bentonite, loss of binding capacity of different temperature. By differential thermal analysis experiments show that: Generally speaking, the failure temperature natural sodium bentonite is 638 ℃, calcium bentonite is 316 ℃. Artificial activation of Na bentonite, due to the activation of different conditions, the temperature is not a failure, but lower than the natural sodium bentonite.

2 drilling mud

Bentonite for drilling mud is bentonite second users, the annual amount of 700000 tons.

Bentonite is a kind of clay mineral with montmorillonite as main component, has strong water absorbability, can absorb the equivalent of 8 times the volume of the water itself, the volume expansion of 10 ~ 30 times, was suspended and colloidal state in aqueous solution. In oil, gas drilling work, want to use mud to cool the drill bit, remove debris, protect wall and equilibrium pressure. Bentonite dispersivity, grout amount is large, so it is ideal material for manufacturing drilling mud. As drilling mud bentonite, the most important requirement is the suspension properties, wet sieve analysis and moisture content.


The important effect of bentonite in drilling, makes its use very large. It is understood, the average recovery wells, about the use of bentonite 8 tons.

3 iron ore pellet

Iron ore pellet bentonite is bentonite third users, the annual amount of 450000 tons.

Iron ore pellet bentonite is one of the important material attached to the modern metallurgy industry, will concentrate powder adding bentonite bentonite and water after mixing pelletizer roll into a ball, and then drying and preheating, roasting has formed a high strength of pellet for smelting.

4 activated clay and clay particles

Activated clay is a kind of chemical products with bentonite processing, has multiple functions of activated carbon, and the price is cheaper than activated carbon. Therefore, a variety of mineral oil, the oil industry is widely applied in the petroleum industry of animal and vegetable oils, solid, liquid paraffin wax, fatty acid, regeneration of waste oil, ethanol and benzene decoloration refining. Can also be used as a Wine and juice clarification, sugar industry syrup purification, chemical industry, the catalyst powder pesticide additives etc..

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. At present, the demand for activated clay in China is about 650000 t/a, annual imports of about 40000 tons.

Particulate clay is the activated clay as the main raw material, scientific formula, chemical processing and become, the appearance of unshaped granular activated clay, it has higher specific surface area and particle strength, stable performance, good selectivity, has a very high adsorption capacity, widely used in petrochemical industry aromatics purification, air kerosene refined, but also for refined oil, base oil, diesel oil, residual olefins, glial, Li Qing, and other impurities removing basic nitrogen compounds. At present, the clay particles is mainly to replace the America TONSIL particulate clay, used for the fitting of olefins removal, aviation kerosene, solvent oil refining, benzene refining, play a nitride removal, colloid, coloring effect. Particulate clay is sometimes called the oil filter oil filter using silica gel, silica gel can be good to remove the acid and the extract oil sludge, biological colloid, insulating material, can remove moisture, impurities and chromatographic analysis of hydrocarbon gases, and can be used for sewage treatment and toxic gas filtering and petrochemical industrial oil catalytic cracking.

5 desiccant

The bentonite drier with adsorption activity, static reduction effect wet and odor removal etc.. Widely used in not using oil seal, gas seal products such as: optical instruments, electronic products, medical care, food packaging and military products and civil products of dry air seal. Compared with silica gel has the advantages of low cost, fast adsorption speed, preparation and low cost. And the other type of desiccant commercially available in comparison, not only the characteristics of adsorption speed, high adsorption capacity and non-toxic, tasteless, non corrosive, non environmental pollution, especially used in food packaging, no harm to human body.

The bentonite drier larger export volume.

6 litter (granular bentonite)

Litter (granular bentonite) uses the high quality natural bentonite, after high temperature drying refined, has a white color appearance, strong adsorption characteristics, the proportion of small, durable, suitable for family pets sanitation purposes.

Litter (granular bentonite) exports large.

7 sewage treatment

Bentonite used as animal feed processing wastewater, gasket odor bentonite can make animal feces easily dispersed, cleaning. The captive animal farms and slaughterhouses, aquatic products processing field generated sewage, odor and harmful to the environment, and bentonite in these places, the recovery efficiency of fertilizer.

Bentonite can be used as clarifier in muddy water, polluted water proofing agent, sewage treatment agent. Printing and dyeing wastewater with bentonite, coal gas washing wastewater, monosodium glutamate factory waste water, waste, removal rate of 99.5%.

And bentonite in the upstream of the reservoir the reservoir unclean substances into the bottom of the flocculation biological purification treatment.

8,The  Construction Engineering

The lubrication of bentonite, bonding and sealing, thickening and gelling into mud, used for lining wall impermeable soil operations, such as wall construction, grouting, pile, caisson, land impervious, cement and concrete construction additives, solid water transport, sewage treatment and tunnel shield lubrication.

Bentonite impervious layer Pu River, the limited water leads to distant. Bentonite waterproof layer can be made of natural sodium bentonite powder is spread directly, also can use bentonite with local soil compaction, can also be bentonite sandwiched between two layers of fabric to form a waterproof (permeability) blanket (plate), fast to build a reservoir, reservoir water kiln, the canal.

Bentonite can be used as waterproof materials, waterproof felt waterproof board, corrugated cardboard loaded bentonite sandwiched between two layers of non-woven fabrics of bentonite and a layer of non-woven fabric with a plastic board is clamped in the middle of the bentonite double waterproof board, this material has been widely used in the subway, the bottom of the dam, the landfill of underground engineering in the process of. Bentonite has high water tightness and self repair function of the restoration, waterproof have compactness (sodium bentonite in water to form the diaphragm, the compactness of the 30cm thickness of clay layer thickness is about 5mm, equivalent to 100 times of water), self performance (sodium bentonite and water reaction when, with expansion force, L3l6 times so it can repair 2mm within the cracks of concrete surface with waterproof performance) and permanent (sodium bentonite does not occur with aging or corrosion) etc.. Harmless to human body of bentonite, environmental performance is excellent. Simple construction. No need for heating and paste, not affected by temperature. At the same time, short construction period, compared with other waterproof materials, construction is relatively simple compared to soft. Only the nails and washer. After the construction does not need the special inspection, if found waterproof defects also easy to repair.

9 food

As food additives and emulsifier in food, can be used as calcium and diet food.

Bentonite can make juice, juice clarification.

Bentonite can soften hard water.

Bentonite to fix nitrogen deposition method for wine clarification, reduce acetaldehyde formation and the formation of hydrogen sulfide, eliminate all alien smell.

10 coating

Bentonite in papermaking industry as multifunctional white paint, anti pitching adsorption agent, maintaining agent, in the pulp of rheological modifier role in machinery it still pulper.

Bentonite can also produce coating. As the viscosity regulator and white mineral filler in the coating, which can partially or completely replace titanium dioxide; also can replace part of polyvinyl alcohol, as well as binder for nonwoven, gypsum particles.

Bentonite of oxidized starch adhesive was modified, which can not only improve the solid content, gum reduced the water, also can plug and fill the paper fiber (especially the straw pulp paper) space, reduce the moisture permeability, thus improves the initial adhesion adhesive and drying speed. Experiments prove that the bentonite effect is good, and the price is low, is the ideal drying agent.


Decolourising earth product specifications, performance characteristics and product use

Product performance

This product is made of attapulgite clay special activation process, is an important auxiliary oil industry, daily chemical industry, petrochemical industry, has a high chemical activity and high adsorption Kong Rong, can be used as adsorbents, catalysts, bleaching agent, commonly used in the decolorization of animal and vegetable oils, oil, resin, wax, natural soda purification; separating olefins aromatics and alkanes; industrial waste oil recycling, petroleum cracking, olefin polymerization catalyst, carbonless paper color and monosodium glutamate, beverage, glucose, vitamins, all kinds of oil adsorption. Also can be used as a desiccant, sewage treatment agent, cleaning detergents etc..

Product features: high removal rate, low rate of oil, filtration speed, low content of free acid. Can completely remove oil in aflatoxin, phospholipids, soap and odor. The main technical indicators have reached and exceeded the standard of HG/T2569-94, close to the international advanced level.

Decolourising Earth

Product specifications

The product model and the decolorization rate% fresh oil

The decolorization rate% oil asphalt method

The free acid%%% moisture fineness (-200 mesh)

TL1040 ≥ 85 ≥ 95 ≤ 0.12 ≤ 10 ≥ 95

TL1060 ≥ 90 ≥ 98 ≤ 0.15 ≤ 10 ≥ 97

Performance characteristics:

Decolourising earth  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.

Decolourising earth 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.

Product use

1, for the removal of animal and vegetable oil in a variety of colors, phospholipids, glial, soap and other substances. Bleached oil clean, transparent and stable quality.

2, with specific adsorption, adsorption to 100% vegetable oil in the strong carcinogen, aflatoxin B1 (AFTB1), 3, 4 – benzene Rui pyrene, ensure the health and safety indicators of edible oil.

3, water purification and sewage treatment

Product features

1, have a wide range of decolorization, adsorption and purification capacity, strong stability in application. Have a strong adsorption of pigments and impurities, the decolor pigments in plant oil rate of more than 95%.

2, the use of this product is simple, no need to change the original production process of oil production enterprises. Oil acid value and decoloring and low, not rise, saves the dehydration process.

3,The cake  filtered (vegetable oil, animal fat) can be renewable, no pollution to the environment.



Technical parameters of Fuller’s Earth, and the use of the main raw material

Attapulgite clay is attapulgite.

Also called palygorskite (Palygorskite) or palygorskite, is a layered structure of the hydrated magnesium silicate clay mineral. The structure of 2:1 type clay mineral. In each 2:1 unit structure layer, tetrahedral wafer angle top certain distance direction reversal, forming the layer chain. In the tetrahedral strips form and channel chain parallel to the channel cross section, about 3.7*6.3A degrees. Filled with zeolite water and crystal water channel in the. Is the main raw material for the production of bleaching powder.

Product characteristics of attapulgite:

1, thickening. The paint is full, open the tank with excellent results;

2, good suspension. Effectively prevent the paint, coating deposition, stratification;

3, good shake thaw. Easy populations, in under the action of shear thinning and thickening, static;

4, good thixotropy. Directly add, good compatibility, no need to change the process and formula;

5, good leveling. Shrinkproof hole and the fish eye, is not easy to flow;

6, weather resistance. With strong acid and alkali resistance, corrosion resistance and mildew resistance;

7, good heat insulating performance. High temperature resistant, heat insulation, insulation;

8, good environmental protection. Chemically inert, non polluting, inhibit microbial growth, absorption of toxic volatile components, green environmental protection

Fuller's Earth

Technical parameters of bleaching clay:

1, appearance: white or light coloured fine powders.

2, bleaching activity of soil moisture (2hr.105 ° C): ≤ 12%

The decolorizing capacity: 3, ≥ 154

4, activity: ≥ 180mol/kg

5, size (0.076mm): 95%

6, the free acid (H2SO4): ≤ 0.20%

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

8, the arsenic content: ≤ 3mg/kg

Scope of application of bleaching clay:

Animal and vegetable oil refining, for the decolorization and purification, remove harmful pigment, oil phospholipid, saponin, cotton acid, making high-grade edible oil.

In the petroleum industry for refining decolorization and purification as well as petroleum cracking of paraffin wax, oil, grease, kerosene and other minerals.

In the food industry, as Wine and sugar juice clarifying agent, stabilizing, beer saccharification processing, the syrup purification etc..

In the chemical industry, as a catalyst, filler, desiccant, adsorbent, wastewater treatment.

Specifications and use bleaching clay:

Project rapid filtration special mineral oil special vegetable oil special decoloring% ≥ 90 ≥ 80 ≥ 85 free acid (H2SO4) analysis% ≤ 0.15 ≤ 0.12 ≤ 0.10 moisture% ≤ 8 ≤ 8 ≤ 8 size (-75 μ m)% ≥ 85 ≥ 85 ≥ 85 filtration rate of ml/min ≥ 4 ≥ 6 ≥

Bleaching clay is mainly distributed in India, Sri Lanka, France