US Silica Company, Berkeley Springs, WV, USAįull range of quality sands and silica flours under the following brand names Mystic White (pool filter sand), F-series Foundry sands, Q-Rok, Sil-Co-Sil (ground silica for thermoset plastics, traffic paint and fiberglass manufacture), Min-U-Sil (fine ground silica for paints, plastics and silicone rubber) manufactured in 12 locations in the USA
Silbond FW 12, 61, 100, 300, 600 – silica flours treated with various silanes (AST – amino, EST – epoxy) Sikron SF 3000, 6000, 8000 – silica flours for dental products
Particle size decreases with grade number increasing Millisil W3-W12 – iron-free grinding of processed silica sand. Sieve analysis: residue on 325 mesh sieve – 0.1-47% Specific electric conductivity, S/cm: 10 −14-10 −16 PH of water suspension: 6.8-7.2, 7-9 (silane treated) Linear thermal expansion coefficient, 1/K: 14×10 −6
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