Kaolin China Clay Powder Processing Machine

What is kaolin china clay?

Kaolin china clay also named kaolin, it is a non-metallic mineral, white and delicate, also known as dolomite. Its mineral composition is mainly composed of kaolinite, halloysite, hydromica, illite, montmorillonite, quartz, feldspar and other minerals. Kaolin has a wide range of uses, including papermaking, coatings, ceramics, refractory materials, plastics, pigments, pesticides, medicine, textiles, petroleum, chemicals and many other fields
Kaolin is white, fine earthy, also known as dolomite, is a non-metallic mineral with good physical and chemical properties such as plasticity and fire resistance. Kaolin has a wide range of uses, mainly used in papermaking, ceramics, coatings, plastics, textiles, chemicals and other industries
 

Kaolin Uses

Kaolin is a kind of non-metallic mineral, which is clay and clay rock mainly composed of kaolinite clay minerals. Kaolin is also called porcelain clay and clay. Kaolin is the main raw material for making ceramics. So what are the specific uses of kaolin?
1. Kaolin's special properties such as plasticity, cohesiveness, certain dry strength, sinterability and whiteness after firing make it the main raw material for ceramic production, which is used to make daily ceramics, architectural and sanitary ceramics, electric ceramics, and chemicals. Corrosion-resistant ceramics, arts and crafts ceramics and special ceramics, etc.

2. Excellent process performance such as whiteness, softness, high dispersibility, adsorption and chemical randomness, make it widely used in the paper industry. It is used for paper fillers and coatings to increase the density, whiteness and smoothness of paper, improve printing performance, and reduce papermaking costs.

3. Pure kaolin with a refractoriness higher than or equal to 1770℃ can be used to make crucibles for smelting optical glass and glass fiber and laboratory crucibles. Low-grade kaolin can be used to make refractory bricks, saggers, refractory mud, tapping mud plugs and burning. White cement, etc.

4. Used as a reinforcing agent and filler, it can improve the mechanical strength and acid resistance of rubber, improve product performance, and reduce cost.

5. To prepare high-performance adsorbents instead of synthetic chemical molecular sieves and used as petroleum cracking catalysts.

6. As a coating for medicine, as a filler for adsorption layer, additives, bleaching agents, detergents, cosmetics, pencils, pigments, and paints.

7. Used as a carrier for chemical fertilizers, pesticides, and pesticides.

8. Kaolin with low iron content is used in glass fiber manufacturing. Its main function is to provide a source of aluminum and silicon, and also to dim its luster.

9. The decorative sheet produced from glass-ceramics with kaolin as the main raw material and wollastonite as the main crystal phase adopts the melting and crystallization molding process. The method has low cost, ideal product color, pattern, and appearance effects, and its surface has a natural stone pattern on the basis of a colorful hue pattern.

10. After kaolin is dehydrated, it is transformed into metakaolin with high pozzolanic activity. The geopolymeric cement prepared by alkali activation of metakaolin and directly used as concrete mineral admixture can significantly improve the workability, strength and durability of concrete. At the same time, it also has a good effect on the common autogenous shrinkage phenomenon of high-performance concrete. The inhibitory effect.

11. In terms of advanced defense technology, high-quality kaolin is required for nuclear reactors, jet aircraft, rocket fuel chambers and nozzles.
 

How to make kaolin china clay?

Kaolin beneficiation processes of kaolin processing plant are divided into two processes: dry method and wet method.

1. Dry method

Generally, the mined ore is crushed to about 25mm through a crusher, and fed into a cage crusher to reduce the particle size to about 6mm. The hot air blown into the cage crusher reduces the moisture of the kaolin from about 20% at the time of mining to about 10%. The crushed ore is further pulverized by a blown Raymond mill equipped with a centrifugal separator and a cyclone dust collector. This process can remove most of the sand and gravel, and is suitable for processing those ore with high raw ore whiteness, low sand and gravel content and suitable particle size distribution. The cost of dry processing is low, and the products are usually used as low-cost fillers in rubber, plastic and paper industries.

2. Wet method

The wet processing technology includes several stages such as mud dispersion, classification, impurity sorting and product treatment.
The general principle process is: raw ore, crushing, mashing, desanding, cyclone classification, stripping, centrifuge classification, magnetic separation (or bleaching), concentration, drying, filter press, ceramic grade or paper coating grade products.

The general principle process of coal (hard) kaolin processing is: raw ore, crushing, smashing, cyclone classification, stripping, centrifugal classification, concentration, filter press, internal steam drying, calcination, depolymerization, filler grade or paper coating Grade kaolin.

Kaolin has become a necessary mineral raw material for dozens of industries such as papermaking, ceramics, rubber, coating chemicals, medicine and national defense.
 

Processing technology of calcined kaolin

The first stage: drying of kaolin

Kaolin clay is used to dry raw materials through a dryer or a mill with hot air according to the moisture content.
 

The second stage: kaolin feeding

The small pieces of kaolin after being crushed by the kaolin powder are sent to the storage hopper by the hoist, and then sent to the grinding powder machine room evenly and quantitatively by the feeder for grinding.
 

The third stage: Grinding and grading

The fine powder after kaolin grinding is classified by the classification system, and the unqualified fine powder is classified by the classifier and returned to the main machine of the vertical mill for re-grinding.
 

The fourth stage: the collection of finished products

The powder that meets the fineness is separated and collected in the dust collector through the pipeline through the airflow. The collected finished powder is sent to the finished product silo by the conveying device through the discharge port, and then is packaged by a powder tanker or an automatic baler.
 

Kaolin china clay powder grinding mill

1. HGM ultrafine powder grinding mill for kaolin

HGM ultrafine powder grinding mill also called HGM micro powder grinding mill, HGM three-ring medium-speed mill and 21r/24r/28r grinding mill.
Discharge particle size: 150-3000 mesh, D97<2500 mesh, D50<3μm
Production capacity: 0.5-45 t/h
Advantages:
1. High cost performance.
2. Low maintenance costs.
3. It can grind a wide range, from coarse powder to fine powder to ultra-fine powder.
4. It is suitable for the fine powder requirements of various industries. Parameters:

Model	HGM80	HGM80A	HGM90L	HGM100L-Ⅱ	HGM100P	HGM125L	HGM1680L
Ring Diameter(mm)	800	800	900	1000	1000	1250	1680
Ring Number (PCS)	3	3	4	4	4	4	4
Input Size (mm)	≤10	≤10	≤10	≤15	≤15	≤20	≤20
Adjustable range of finished product (mesh)	150-3000	150-3000	150-3000	150-3000	150-3000	150-3000	150-3000
Capacity (t/h)	0.5-5.5	0.5-5.5	0.8-6.5	1.2-10	1.2-11	2.5-20	5-45
Outlet Size L*W*H (mm)	8605*4139*6050	10454*3393*6626	11735*3952*7525	14507*3633*7562	14362*4200*7562	19261*4406*8591	25067*5414*9007
Main motor power (kw)	75	75	55*2	132/75*2	132/75*2	185	315

 
 

2.CLUM ultrafine vertical roller grinding mill

Discharge particle size: 400-3000 mesh, D97<3000 mesh, D50<2μm
Production capacity:
Advantages:
1. High 2 micron powder content.
2. Good sphericity of the produced powder.
3. High whiteness of calcium carbonate powder.
4. High efficiency: production of ultra-fine powder of the same fineness, less power consumption, higher output.
5. Stable performance.stable equipment.
6. High profit.
7. It is suitable for industries that require high powder whiteness and particle size.
   
Parameters:

ModelItem	CLUM1425	CLUM1632	CLUM1736
Working Diameters（mm）	1400	1600	1700
Number of rollers（pieces）	3	3	3
Number of classifier（pieces）	6	6	8
Power of classifier（Kw）	6X15	6X22	8X22
Main unit power （Kw）	220-250	315-355	355-410
Blower power（Kw）	180-200	250-280	325-355
Feed size （mm）	＜10mm	＜10mm	＜10mm
Moisture of feeding material	＜3%	＜3%	＜3%
Less than 2μm=30%  output（t/h）	9-12	12-16	14-18
Less than 2μm=45%  output（t/h）	5.5-7.5	7-9	10-12
Less than 2μm=60% output（t/h）	3-4	/	/

Material: base on calcite
Particle size distribution: measured by microlayer diffraction particle size analyzer in British Malvern 3000 instruments

CLUM1425 TECHNICAL PARAMETER

Output (t/h) Item	10.0-12.0	7.5-9.5	6.0-8.0	4.5-6.5	3.0-4.0
specific surface area(cm²/g)	11000±500	13500±500	15000±500	17000±500	19000±1000
325mesh remaining amount (%)	0.015	0.015	0.01	0	0
less than 2μm powder content (%)	30	40	45	50	60
Median particle diameter D50 (um)	5.2	3.0	2.5	2	1.4
General name(mesh)	600	800	1250	2000	2500
Particle size distribution D97 (um)	30	25	20	15	9
Particle size cut point D100 (um)	80	48	38	28	18
Moisture content (%)	<0.3%	<0.3%	<0.3%	<0.3%	<0.3%
Energy consumption (KW/T)	38-40	40-50	47-53	50-53	110-125

CLUM1632 TECHNICAL PARAMETER

Output (t/h) Item	12.5-14.5	9.5-11.5	7.5-9.5	6.0-8.0
specific surface area(cm²/g)	11000±500	13500±500	15000±500	17000±500
325mesh remaining amount (%)	0.015	0.015	0.01	0
less than 2μm powder content (%)	30	40	45	50
Median particle diameter D50 (um)	5.2	3.0	2.5	2.0
General name(mesh)	600	800	1250	2000
Particle size distribution D97 (um)	30	25	20	15
Particle size cut point D100 (um)	80	48	38	28
Moisture content (%)	<0.3%	<0.3%	<0.3%	<0.3%
Energy consumption (KW/T)	38-40	40-50	47-53	50-53

CLUM1736 TECHNICAL PARAMETER

Output (t/h) Item	15.0-18.0	11.5-13.5	9.0-11.0
specific surface area(cm²/g)	11000±500	13500±500	15000±500
325mesh remaining amount (%)	0.015	0.015	0.01
less than 2μm powder content (%)	30	40	45
Median particle diameter D50 (um)	5.2	3.0	2.5
General name(mesh)	600	800	1250
Particle size distribution D97 (um)	30	25	20
Particle size cut point D100 (um)	80	48	38
Moisture content (%)	<0.3%	<0.3%	<0.3%
Energy consumption (KW/T)	38-40	40-50	47-53

Kaolin clay powder grinding mill supplier

SBM Ultrafine Powder Technology Co., Ltd.  is one of the premier manufacturers for equipment in the mining, grinding, coating,packing, recycling and process industries. 

With SBM Ultrafine Powder Technology unique knowledge and innovative solutions, SBM helps many customers improve their operational efficiency, reduce risks and increase profitability.


SBM Ultrafine Powder Technology products can be divided into :
crushing equipment, grinding   equipment,  drying equipment, screening equipment, conveying equipment and auxiliary equipment. 

SBM Ultrafine Powder Technology products have passed the quality system certification of ISO9001:2008, and the European CE certificate. 

SBM sincerely welcome local distributors join us together to shape SBM Ultrafine Powder Technology brand and delivery high value-added equipment products in the global market around world. 

SBM Ultrafine Powder Technology is an international high-tech enterprise which integrates the research and development, production and sales.

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Further Reading:

Kaolin clay vs bentonite clay

Bentonite is a water-bearing clay mineral mainly composed of montmorillonite. The chemical composition of montmorillonite is: (Al2, Mg3) Si4O10 OH2•nH2O, due to its special properties. Such as swelling, adhesiveness, adsorption, catalytic, thixotropy, suspension and cation exchange. Therefore, it is widely used in various industrial fields.


Pure kaolin has high whiteness, soft quality, easy to disperse and suspend in water, good plasticity, high cohesiveness, and excellent electrical insulation properties; it has good acid solubility, very low cation exchange capacity, and good The fire resistance and other physical and chemical properties. Therefore, kaolin has become a necessary mineral raw material for dozens of industries such as papermaking, ceramics, rubber, chemicals, coatings, medicine and national defense. Kaolin is widely used in the paper industry. There are two main areas, one is the filler used in the papermaking (or papermaking) process, and the other is the pigment used in the surface coating process.
Kaolin is a non-metallic mineral, a kind of clay and clay rock dominated by kaolinite clay minerals. The pure kaolin is white, fine, soft and soft, with good plasticity and fire resistance and other physical and chemical properties.
Summary: The biggest difference between bentonite and kaolin is that although kaolin is viscous, the composition is very different from that of bentonite, and the high territory is not expansive.
 

The difference between washed kaolin and calcined kaolin

Different treatment methods

1. Calcined kaolin: raw ore crushing, smashing, cyclone classification, stripping, centrifugal classification, concentration, filter press, internal steam drying, calcination, depolymerization, etc.

2. Water-washed kaolin: After crushing the raw ore, it is mashed, de-sanded, cyclone grading, stripping, centrifuge grading, magnetic separation (or bleaching), concentration, pressure filtration, and drying.

The process is different

1. Calcined kaolin: the whiteness after calcining is more important, the higher the calcined whiteness, the better the quality. Ceramic technology stipulates that drying at 105°C is the grading standard for natural whiteness, and calcination at 1300°C is the grading standard for calcined whiteness.

2. Water-washed kaolin: The kaolin is prepared into a slurry with a solid gas content of about 40%. After adding a dispersant, add a grinding medium (such as quartz sand, porcelain beads, glass beads, nylon polyethylene beads, etc.) in a grinder for a certain amount of grinding After time, sieving, and then precipitation classification.

Different uses

1. Calcined kaolin: prepare filler grade or papermaking coating grade.

2. Washed kaolin: can be used for ceramic or paper coatings.