Method for the precipation of silica in connection with zinc...

Details Method for the precipation of silica in connection with zinc... Method for the precipation of silica in connection with zinc...

2002-03-08

2009-11-10

King, Roy (Department: 1793)

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

Reexamination Certificate

active

07615100

ABSTRACT:
The invention relates to a method for the leaching of oxidized ores and in particular zinc ores. The ore, wherein the valuable metals are at least partially in silicate form, are routed to an acidic leaching stage in conditions where the silicate decomposes and the valuable metal ion comes into the solution. During leaching the silicate ion first dissolves, but simultaneously decomposes and is precipitated as silica.

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Boyanov et al., “Phase content of Semi-finished products in zinc production”, Thermochimica Acta, 93 (1985), pp. 733-736.
Webster's Seventh New Collegiate Dictionary, G.C. Merriam Co., 1965, p. 809.

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