Bentonite image
 Bentonite image


Bentonite is a non-metallic mineral with montmorillonite as its main mineral component and its content is 85-90%,the hardness is 1-2 and the density is 2-3g/m³,because of the change of iron content.there are different kinds of color,like White, light yellow, light grey, light green, pink, brown red, brick red, grey black etc.. According to the different characters,including Adsorption、expansibility and the Pulpability,the bentonite can be divided into Sodium、Hydrogen、Calcium and the Organic bentonite.

Grinding Processing

 Grinding Processing img
 Grinding Processing img
 Grinding Processing img
 Grinding Processing img

Feeding System

The limestone is fed into the bucket elevator and subsequently transported to the raw material warehouse for grinding.

Grinding System

After grinding, the finished products are gathered by powder concentrator, and then conveyed to a screw conveyor.

Product Conveying System

The finished products are transported to the storage warehouse, while the excess gas is filtered by the dust collector.

Dust Removal System

The whole system is equipped with three pulse dust collectors to guarantee that the whole system is free of dust leakage.

Control System

The system is outfitted with an intelligent PLC control cabinet and an upper computer.

Control System

The system is equipped with an intelligent PLC control cabinet and an upper computer.

Related Products



Bentonite for casting is the largest user of bentonite, and it is mainly used in clay bonded sand for casting, because it has the characteristics of strong adhesion, high plasticity, good film removal, excellent air permeability, stable physical and chemical properties under high temperature and wet state etc.

Bentonite Powder for Casting Industry Standard(GB/20973-2007)

Item GradeⅠ GradeⅡ Grade Ⅲ Grade Ⅳ
Pressure strength,KPa ≥ 100 70 50 30
Hot wet tensile strength,KPa ≥ 2.5 2 1.5 0.5
Blue absorption,g/100g ≥ 32 28 25 22
Particle Size 200 mesh(75μm)D85
Moisture content % ≤ 9-13
Application of Feldspar powder img

Drilling Mud

Bentonite for Drilling Mud is the second largest user of bentonite. Bentonite is a clay mineral with montmorillonite as the main component. It has strong water absorption and can absorb water equivalent to 8 times its volume. The volume expansion is 10 to 30 times. It is suspended and gelled in an aqueous solution.When performing oil and gas drilling, etc., mud must be used to cool the drill bit, remove debris, protect the well wall and balance the ground pressure. Bentonite has good dispersion and large slurry output, so it is an ideal material for drilling mud.

Bentonite Powder for Drilling Mud Industry Standard(GB/20973-2007)

Item Drilling bentonite Untreated bentonite OCMA bentonite
Viscometer 600r/min ≥ 30 / 30
Yield value /viscosity ≤ 3 1.5 6
Fluid loss ≤ 15 / 16
Particle Size 200 mesh(75μm)D95
Moisture content % ≤ 13
specification img

Iron Ore Pellets

Bentonite Powder for Iron ore pellets Industry Standard(GB/20973-2007)

Item Sodium bentonite Calcium-based bentonite
Item Grade GradeⅠ GradeⅡ Grade Ⅲ GradeⅠ GradeⅡ Grade Ⅲ
Water absorption,% ≥ 400 300 200 200 160 120
Blue absorption,g/100g ≥ 30 26 22 30 26 22
Expansion Index ml/2g ≥ 15 5
Particle size 75μm,% 98 95 95 98 95 95
Moisture content % 44087 44087
specification img

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