发明名称 |
QUATERNARY AMMONIUM COMPOUNDS FOR FROTH FLOTATION OF SILICATES FROM AN IRON ORE |
摘要 |
<p>The present invention relates to a froth flotation process in which silicates are separated from an iron ore in the presence of a collector containing a quaternary ammonium compound having the formula: R1R1N<+>R3R4 1/z X<z-> (I), in which the groups R1 independently are hydrocarbon groups, preferably aliphatic groups containing 6-14 carbon atoms and/or the group R2-(OR7)m-OR8-, where the groups R2 independently are acyl groups containing 6-14 carbon atoms, the groups R7 independently are alkylene groups containing 2-4 carbon atoms, the groups R8 independently are alkylene groups containing 2-3 carbon atoms and m is a number from 0-5, R3 and R4 independently are alkyl groups containing 1-4 carbon atoms or groups (R5O)p, where the groups R5 independently are alkylene groups having 2-4 carbon atoms and p is a number from 1-4, X is an anionic group, and z is the charge of the anion X. This collector has a high selectivity to concentrate silicates in the froth product, while a high yield of iron minerals is maintained in the bottom concentrate or concentrates.</p> |
申请公布号 |
WO0062937(A1) |
申请公布日期 |
2000.10.26 |
申请号 |
WO2000SE00678 |
申请日期 |
2000.04.10 |
申请人 |
AKZO NOBEL NV;SVENSSON, MAGNUS;GUSTAFSSON, JAN, OLOF;KLINGBERG, ANDERS |
发明人 |
SVENSSON, MAGNUS;GUSTAFSSON, JAN, OLOF;KLINGBERG, ANDERS |
分类号 |
B03D1/01;B03D1/02;(IPC1-7):B03D1/001 |
主分类号 |
B03D1/01 |
代理机构 |
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