Sodium bentonite

    " Huawei"   bentonite used for Chemical, Coatings, Rubber pesticide, Fertilizer, Fodder, Medicine, Cosmetics, Paper making, Purifying water, Animal feed,Food grade for humas,Moisture absorption of water and others..

Bentonite for foundry

    "Hua Wei" series casting bentonite is be used of green sand mold, drying mold,etc. for casting production.

    Be suitable for wet type, dry type, dry type, high pressure molding processes for various steel, cast iron production. Main features are as follows:

 1.Adding less, high strength.

 2.Good air permeability.

 3.High wet-heat tensile strength, high resisting sand inclusion ability.

 4.High temperature resistance.

 5 Good reusability.

    as a core sand binder, make   molding sand has good process performance, to improve casting surface finish, to ensure the quality of castings and improve yield.
    in recent years, our company has developed and produced a new type of sodium bentonite and synergistic casting bentonite, with more excellent process performance, is the best right binder for foundry sand.

MajorTechnique Datas:

TYPE ITEMS	Sodium    Base  Bentonite		Ca-Bentonite
	First	Second
Methyl Blue g/100g	36	34	30
Colloid Value ml/15g	500	500	48
Swelling Value ml/g	50	30	10
Wet pressure strength Kpa	120	100	50
PH Value	8.0-10.0	8.0-10.0	6.5-7.5
Hot wet tension strength Kpa	3.5	3.0	1.5
Moisture Content%	10	10	10
Fineness(Pass 200mesh)	95	95	95
Package	50kg      1000kg

OCMA Grade for drilling and construction

Performance	Standard- OCMA	Huawei Standard- OCMA
Viscometer dial reading at 600r/min	30	35
Yield point/Plastic Viscosity Ratio	6	4
Filtrate volume /ml	16	12
Residue of diameter 75um%	2.5	2
Moisture content %	13	11

API Grade 

Requirement	Standard-API	Huawei Standard-     API
Viscometer dial reading at 600r/min	30	35
Yield point/Plastic Viscosity Ratio	3	2.4
Filtrate volume /ml	15	12
Residue of diameter 75um/%	4.0	3.0

A.Why choose HW Group?

1) We are the STATE-LEVEL KEY HIGH-TECH ENTERPRISE of manufacturing bentonite in China.

2) We are one of  the largest bentonite manufacturer in China, and specialized in researching and developing bentonite for over 30 years.

3) Own almost 1.5 million square meters bentonite mine with high Montmorillonite content.

4) Own tens of state patented technologies.

5) We are able to offer you the steady quality all the time with exclusively self-retained technologies.