Zhishang Chemical

Welcome to Zhishang Chemical      +86-176 5311 3209     Simon@sdzschem.com

Zhishang Chemical

Kaolin Clay CAS 1332-58-7

Molecular Formula: H2Al2O8Si2.H2O

Formula Weight: 258.16

ZSpharmac: Kaolin Clay Supplement

Product Name: Kaolin Clay
CAS No: 1332-58-7
Purity: 99%

Navigation Bar

Basic Info

Product Name:Kaolin Clay
Other Names:KAOLIN
Place of Origin:Shandong, China
Brand Name:ZSpharmac
Type:Cosmetic Raw Materials
Appearance:Gray or Pale Yellow Powder
EINECS No.:310-194-1
Storage:No Restrictions
Provide:Kaolin Clay MSDS;
Kaolin Clay COA

What is Kaolin Clay?

Kaolin Clay is a clay or clay rock controlled by minerals of the kaolinite family. It is a non-metallic mineral, a type of clay and also clay rock mostly composed of kaolinite clay minerals. Since it is white and also fragile, it is additionally called white cloud soil. It is called after Gaoling Town, Jingde Community, Jiangxi Province.

Kaolin Clay Property

Melting point 1750 °C
density 2,6 g/cm3
refractive index 1.6200
storage temp. no restrictions.
solubility Practically insoluble in diethyl ether, ethanol (95%), water, other organic solvents, cold dilute acids, and solutions of alkali hydroxides.
form Powder
color 75-96, Hunter Brightness
PH6-7 (50g/l, H2O, 20℃)(slurry)
Water Solubility insoluble H2O, dilute acids and alkali hydroxides [HAW93]


Kaolin Clay Uses

  1. Kaolin Clay is an anticaking agent; decolorizing representative (for starch syrup, and so on); sedimentation representative; filter help (a glass of wine information, etc). GB 2760-90 stipulates that it can be utilized as processing help.
  2. Kaolin Clay is a precision spreading market, refractory.
  3. Kaolin Clay is used to make family ceramics, refractory materials, finishings, optical glass, numerous electro-magnetic insulators, as well as likewise utilized in paper, rubber, plastic industries and also unique porcelains.
  4. Kaolin Clay can be used in vacuum blood collection tubes, as well as it is made use of in serum to coagulate product for splitting up as well as purification.
  5. Kaolin Clay can be utilized as a conditioner in desiccants. Liquid making clear representative. Assistance for drivers in natural synthesis. Driver for organic synthesis in pharmaceutical sector, provider and tool dyeing. It can additionally be utilized as a clarifying agent, ceramic concrete, refractory products, and so on.

The Beneficiation Process of Kaolin Clay

Dry process is a basic and also affordable handling modern technology. After the extracted raw ore is squashed to 25.4 mm by the hammer crusher, it is fed right into the cage crusher to minimize the bit size to 6.35 mm. The hot air in the cage crusher lowers the wetness of Kaolin Clay from the mined 20%. to around 10%. The crushed ore is more ground by an air-blown Raymond mill furnished with a centrifugal separator and a cyclone. This process can get rid of the majority of the sand and gravel, and also the product is typically used as an inexpensive filler in the rubber, plastic and also paper markets. When utilized in the paper market, the item can be utilized as a filler where the ash content of the filler layer is less than 10% or 12%, as well as the illumination of the product is not required right now.

When the dry method has high needs on the whiteness of the product, it is essential to dry iron removal for the items produced by the Raymond mill. The benefit of the dry procedure is that it can conserve the item dehydration and completely dry procedure process, reduce the loss of ash powder, the process flow is short, the manufacturing price is low, and also it is suitable for arid and water-deficient locations. Nevertheless, to get high-purity and also top notch kaolin, we need to depend on the damp procedure.

The damp procedure consists of 3 stages: ore prep work, beneficiation processing as well as item handling. The prep work phase consists of procedures such as batching, squashing and also mashing. The mashing is to blend Kaolin Clay raw ore with water as well as dispersant in a masher to make pulp. The mashing procedure can disperse the raw ore, prepare kaolin ore slurry of ideal excellence for the sorting operation, and get rid of large-grained sand at the same time. The beneficiation phase might consist of procedures such as hydraulic category, flotation protection, discerning flocculation, magnetic splitting up, chemical treatment (lightening) to eliminate various contaminations. The prepared pulp is first de-sanded by a rake-type washing box, a drifting tank classifier or a cyclone, and after that it is split right into Two qualities of crude and fine. The great quality of the classifier is sent out to HGMS (High Slope Magnetic Separator) to get rid of iron and titanium pollutants, and also the product is peeled off by mixing and rubbing, and after that iron oxide leaching is accomplished. Stripped and also sent out straight to the leaching procedure. After leaching, alum is included in the pulp to coagulate the clay minerals to facilitate dehydration. The blonde clay is dewatered with a high-speed centrifuge, rotary vacuum filter or filter press. Filter or filter press for dehydration. The filter cake is re-dispersed right into 55% to 65% solid slurry, and then spray-dried to make loosened completely dry items. Part of the completely dry item is blended into the spread pulp to make 70% solids and also shipped to the paper mill.

The end product has reduced illumination without selection, as well as high-brightness clay products can just be acquired by setting up magnetic separation, froth flotation or selective flocculation in the process. Nevertheless, these independent procedures all have their very own benefits as well as drawbacks, so the market generally embraces a mixed process of two to three of these procedures for extensive usage of clay resources.

The dyeing pollutants (such as hematite, etc) in Kaolin Clay have weak magnetic residential properties, so they can be gotten rid of by a high slope magnetic separator. The United States uses PEM-84 damp high gradient magnetic separator to lower Fe2O3 in kaolin ore from 0.9% to 0.6%, and Ti2O3 from 1.8% to 2.0% to 0.8%. This high gradient magnetic separator utilizes stainless steel wool as the tool, and when the field stamina is 1.5-2.0 T, the power usage is 270-500kw. my country has accomplished wet research on Suanling, Leiyang, Boluo and Hengling clays in Hunan [3-6], and great examination outcomes have been gotten, specifically the elimination of iron and also titanium in kaolin by resonance high gradient magnetic splitting up. a very good examination sign. According to the comparative examination outcomes of the CLY500 resonance high gradient magnetic separator made use of by Kaolin Clay in Leiyang, Hunan District as well as the high gradient magnetic separator of PEM-84 in the USA, from the viewpoint of lowering the web content of iron and titanium pollutants as well as improving the whiteness, China’s high slope magnetic separator Magnetic separator efficiency is better than the United States.

Since some iron contaminations in some kaolin mines exist in the form of silicate, the magnetic buildings are very weak, and also titanium exists in the form of rutile, so the magnetic splitting up approach is hard to work, so the process is typicallyaccompanied by various other operations such as flotation protection and careful flocculation., in order to boost the quality of the item. Over the last few years, superconducting magnetic separators have actually been efficiently applied to kaolin sorting, which not just lowers energy consumption, yet additionally greatly enhances field stamina, and the top quality of kaolin concentrate is additionally greater. The Eriez Superconducting Magnetic Separator includes a rapid ramp-up to reach the highest style field stamina (5T) within 60s, and a short demagnetization time, which significantly decreases the moment required to purge magnetic contaminations from the magnets throughout obligation cycles. Its power consumption is low, regarding 80% less than the standard magnetic separator, and the processing capacity is big, which can get to greater than 100th. A reciprocating helical tube superconducting magnet system has been evaluated in the United Kingdom, and its style resembles a standard canister magnetic filter, except that it maintains the superconducting magnet in the fired up state throughout the functioning cycle without switching control, and can Continual job. The 3048mm, superconducting high slope magnetic separator developed by German Humboldt Firm has simple framework, reduced operation and maintenance costs, and great security.

The purpose of the flotation protection procedure is to flotate titanium impurities from the Kaolin Clay. Since the impurity particles are extremely great, the provider flotation protection procedure is normally used. The carrier minerals can be calcite, silica sand (-325 mesh), the dosage of carrier minerals is typically 10% to 20% of the weight of kaolin, and also a part of the service provider can be recycled after reusing. The reagents utilized in the flotation procedure consist of dispersant sodium silicate, pH adjuster ammonium hydroxide as well as caustic soda enthusiast Tall oil, fatty acid and oil calcium sulfonate. However, there are numerous negative aspects in flotation protection. The hydrophobization of the service provider requires a big amount of chemicals. The flotation procedure can only work when the slurry focus is reduced, thereby increasing the price of dewatering. The service provider needs to be eliminated from the clay item as long as possible. And from the foam Reused in the item for reusing. Chemicals and carrier minerals remaining in the clay are harmful to the final product. Cundy and also Yong et al. researched a carrier-free flotation protection process to directly float anatase from kaolin, which is characterized by the presence of a dispersant (such as sodium silicate) and a pH insurer (generally ammonium hydroxide). Under the condition of high slurry concentration (40% to 60% solids) rubbing, the surface area dirt is eliminated, and also the scrubbing likewise dissociates anatase and hematite from kaolin minerals, and afterwards a percentage of activator and also fats are trapped. The collection agency is added to the slurry with each other, as well as the anatase covered by the collection agency forms a careful load under the condition of high shear mixing, to make sure that the fragment size raises dramatically, and the slurry after high shear mixing is watered down to 15% ~ 20% solids are utilized for flotation, as well as the alumite in Kaolin Clay can also be gotten rid of by flotation protection.

At pH 8 ~ 11, the selective coagulation of iron and titanium contaminations can be observed by adding alkaline earth metal ions such as Ca2+ and also Mg2+ to kaolin slurry, and then careful flocculation is accomplished with weak anionic polyelectrolytes. The process calls for the pulp focus to be lower than 20%, so there must be a lot of water to be removed in the subsequent procedure, as well as the residual flocculant also impacts the quality of the end product.

The kaolin is precisely flocculated with a polymer flocculant, the kaolin particles flocculate each other and also sink to the bottom, as well as the iron and also titanium pollutants exist in the top suspension because of the great fragments and also show up reddish-brown, and the top suspension can be gotten rid of. Most of the iron and titanium pollutants are eliminated, and afterwards refined by various other procedures (such as magnetic splitting up) to obtain high-grade kaolin. Suzhou Kaolin Clay Company has accomplished good signs by adopting a brand-new discerning flocculation procedure. The selective flocculation as well as high slope magnetic separation treatment of kaolin likewise got sufficient indexes.

The leaching is accomplished in the visibility of a decreasing representative (NaS2O4) in a weakly acidic service (pH3 ~ 4), which can maintain the liquified iron in the Fe2+ state, prevent the formation of Fe( OH) 3, and also clean it with water to divide it from the kaolin. In order to eliminate dark organi.

Purification of Kaolin Clay

The main minerals of Kaolin Clay are kaolinite and halloysite. In addition to the kaolinite group minerals, there are often linked clay minerals such as montmorillonite, illite, pyrophyllite, quartz, feldspar, iron minerals, and also titanium minerals. and various other non-clay minerals and also raw material. In order to produce kaolin items that can fulfill the demands of numerous industrial areas, physical methods, chemical methods and also high-temperature calcination techniques are usually made use of to detoxify kaolin as well as eliminate pollutants.

The physical filtration technique mostly uses the distinctions in physical properties such as fragment dimension, density, magnetism as well as surface area adsorption of various minerals to divide some non-clay minerals, consisting of hands-on choice, water splitting up, flotation protection, and also magnetic splitting up. Chemical filtration and lightening are mostly used to eliminate iron-bearing minerals from kaolin. The major methods are acid leaching, chlorination, alkali treatment, decrease, oxidation and combined redox.

High-temperature calcination is the very best method for carbon elimination as well as bleaching, and it is likewise a necessary processing approach for kaolin in coal-measure formations. Usually calcined at 650-1050 ℃, the stage of Kaolin Clay is entirely changed, and also some impurities are volatilized at the same time, so as to improve the whiteness and also insulation. Often high temperature treatment techniques such as chlorination roasting and also oxidative roasting can additionally be used to eliminate iron and also titanium components in Kaolin Clay.

About Products:
If you need Kaolin Clay, a cosmetic raw material, please contact our service staff directly, we will provide you with high-quality products at the best price.
As an experienced Kaolin Clay manufacturer and supplier, ZSpharmac will provide Kaolin Clay raw materials to customers all over the world for a long time.
Over the years, the company has been adhering to the spirit of “integrity management, strict quality control, and customer first”, and has won unanimous praise from domestic and foreign customers.

Company Profile and Corporate Culture

Company Profile:

ZhiShang Chemical is owned by ZhiShang Group is a professional new-type chemicals enterprise combined into research and development, production and sales .

The company’s competitive product is pharmaceutical raw materials and intermediates (especially carbohydrate derivatives Series), In recent years, the company has made a major breakthrough in food and feed additives, plant extraction, industrial chemicals industry .

The company insists on the spirit of “sincere management, strict quality control, customer as god” , get consistent high praise from customers at home and abroad.

Corporate Culture:

Help China Chemicals to benefit the happiness of human life
Become the most trusted chemical supplier in the world
Striver – oriented, enrich employees, customer first, deep service, seek development
Be prepared for danger in times of peace, forge ahead actively, unity and cooperation, and be brave to fight

About Us

The production base is located in Zhangqiu chemical industry park and Tai’an high-tech chemical industry park. laboratory and workshop in strict accordance with the GMP standard and the product fit national ISO9001 and ISO2000 standards.

“Zhishang” products are exported to Europe, North and South America, the Middle East, Asia Pacific and Africa area, so as to establish a long-term and stable cooperation relationship with customer in the world.

Company Info
  • Business Type: Manufacturer
  • Product Range: Cosmetic raw materials
  • Products/Service:Cosmetic raw materials (flavors and fragrances,antioxidant products, moisturizing and hydrating, whitening agents, cosmetic additives)
  • Total Employees: 51~100
  • Capital (Million US $): 10000000RMB
  • Year Established: 2016
Production Capacity
  • No. of Production Lines : 8
  • No. of QC Staff : 5 -10 People
  • OEM Services Provided : yes
  • Factory Size (Sq.meters) : 3,000-5,000 square meters
  • Certificate: ISO9001 , CE , GMP , API , MSDS
  • Factory Location : Diao Town Industry Park, Zhangqiu City, Jinan City, Shandong Province, China.


Pre-Sales Service

* Prompt reply and 24 hours online, professional team to provide best price and high quality product.

* Sample testing support.

* Every batch of products will be tested to ensureits quality.

*The packing also can be according the customers` requirment.

*Any inquiries will be replied within 24 hours.

*we provide Commerical Invoice, Packing List, Bill of loading, COA , Health certificate and Origin certificate. If your markets have any special requirements, let us know.


After-Sales Service

*The fact of logistics information monitoring.

* Any questions about the product can be consulted at any time.

*Product has any problem can return.


Do you accept sample order?

We will make samples before mass production, and after sample approved, we’ll begin mass production. Doing 100% inspection during production, then do random inspection before packing.



You can get free samples for some products,you only need to pay the shipping cost or arrange a courier to us and take the samples. You can send us your product specifications and requests,we will manufacture the products according to your requests.

What’s your MOQ?

Our MOQ is 1kg. But usually we accept less quantity such as 100g on the condition that sample charge is 100% paid.

Do you supply product report?

Yes. We’ll give you product analysis report before shipping.

  Is there a discount?

Different quantity has different discount.


1. ≤50kg, Express delivery recommended, usually called as DDU service;

2. ≤500kg, Air shipping recommended, usually called as FOB, CFR, or CIF service;

3. >500kg, sea shipping recommended, usually called as FOB, CFR, or CIF service;

4. For high value products, please select air shipping and express delivery for safe.

Get Kaolin Clay Quotation