Prezentul standard stabile?te metoda de determinare a con?inutului de dioxid de siliciu din minereuri ?i concentrate de cupru, plumb, zinc, bismut, molibden, pirit? ?i sulfuri complexe ?i anume:
-metoda gravimetric?, pentru con?inuturi de dioxid de silici
STAS 1269/15-1992 history
1992STAS 1269/15-1992 Copper, lead, zinc, bismuth, molybdenum, pyrite ores and concentrates and complex sulphures. Determination of silicon dioxide content