Calcium or Sodium base Bentonite

The sodium and calcium-base bentonite produced by Richangsheng Tech and Industrial Co.,Ltd. are used as the sand binder in green molding, surface drying molding, dried molding and pressure molding in cast iron and cast steel, which have a high strength high ore-carrying-resistance, high-temperature resistance and good repeatable-utilization, improve the surface finish and dimensional precision of castings, and reduce ratio of rejects. Especially the sodium-base bentonite as the mould sand binder has incomparable merits. Properties of this product is a kind of sub-white powder with no poison, it has fine properties as the caking capacity, absorptivity, expansion, base exchange capacity, thixotropy, suspension, refeactoriness, plasticity etc. Functions, it's mainly used as bonding agents for foundry sand, bonding agents for iron ore pelletizing, drilling mud, pestcide filler and activated bleaching earth