... performance can be comparable with the zircon sand, sand with its preparation, no expansion of casting defects ... , making the binder cover evenly4, ceramic materials, neutral sand, acid, alkali binder apply5, re-use regeneration performance, ... the application of a wide range of silicate sand, resin sand casting and brass, polished aluminum parts cleaningcompare: ... sclerosis )3-4%7-8%7-8% ceramsite foundry sand