

The advantages of bentonite are mainly reflected in the following aspects: First, bentonite has excellent water absorption and expansion and cation exchange, and can effectively adsorb and separate solid and liquid particles. Secondly, bentonite also shows good viscosity, thixotropy and lubricity, and is widely used in seepage prevention, sealing and other fields. In addition, bentonite has the ability to adsorb a variety of substances and can be used to purify the environment and treat industrial wastewater. At the same time, bentonite also has certain catalytic, chemical stability and electrical conductivity, which provides strong support for many industrial fields.
Runhuabang are renowned for their ability to supply a wide range of high-quality materials, and sodium bentonite clay for rough iron casting, with CAS number 1302-78-9, is no exception. This type of clay has been specifically engineered to meet the demanding requirements of the iron casting industry.
Physical Properties | Chemical Properties | ||
Color | Light White/Yellow | SiO2 | ≥ 90 % |
Specific Gravity | 2.3 - 2.4 g/cm3 | Al2O3 | ≤ 7.0 % |
Moisture | ≤ 10 % | Fe2O3 | ≤ 1.5 % |
LOI | ≤ 4.0 % | CaO | ≤ 0.5 % |
D(50) | 200 Mesh | MgO | ≤ 0.5 % |
Apparent Bulk Density | 0.68 - 0.73 g/ml | Others | ≤ 0.5% |







1. Who are we?
We are based in Hebei, China, start from 2021,sell to Eastern Europe(30.00%),Domestic Market(30.00%),Eastern
Asia(20.00%),Africa(20.00%). There are total about 51-100 people in our office.
2. How can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment
3.What can you buy from us?
Mica, Vermiculite
4. Why should you buy from us not from other suppliers?
Runhuabang has strong technical and economic strength: 38 employees with engineer, college degree in processing, testing, sales, finance, warehousing and after-sales one-stop service, passed the international quality system certification ISO 9001:2000
5. What services can we provide?
Accepted Delivery Terms: FOB,CFR,CIF,EXW,CIP,FCA,DDP,Express Delivery;
Accepted Payment Currency:USD,EUR,JPY,CAD,AUD,HKD,GBP,CNY,CHF;
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Language Spoken:English,Chinese