Solids Control Equipment. Solids Control Equipment exists in almost every liquid flow processing applications where there is a need to remove solids from liquid or remove liquid from solids, especially, in drilling fluids solids control, waste water treatment and dredging slurry applications. At H-screening, we have extensive experience in the ... Silica Sand. Silica sand, also known as silica or quartz sand, is a kind of hard, wear-resistant and chemical stable silicate mineral. Its main mineral composition is SiO2. According to different mining and processing methods, silica sand can be divided into artificial silica sand, water washed sand, scrubbed sand, selected (flotation) sand, etc. Aug 19, 2021 High-purity ultra-fine quartz powder is widely used in the manufacture of electronic inks, optical fibers, advanced precision ceramics, precision grinding of optical devices and electronic components, etc. The most important of which is in the field of electronic packaging. Quartz powder for electronic packaging must be high-purity and ultra-fine.