Skip directly to search Skip directly to A to Z list Skip directly to page options Skip directly to site content

NIOSHTIC-2 Publications Search

Search Results

Direct flotation of potash from insoluble-slime-bearing Sylvinite and Carnallite ores.

Authors
Foot-DG Jr.; Huiatt-JL
Source
AIME Transactions 1981 Feb; 272:1-8
Link
NIOSHTIC No.
10006959
Abstract
The Bureau of Mines devised a direct flotation method for treating low-grade carnallite (kcl-mgcl2.6H2o) and sylvinite (a mixture of kcl and nacl) ores characterized by a high content of water- insoluble impurities. The procedure consists of (1) flocculation- depression of the insoluble slimes, (2) decomposition leach (carnallite only), (3) potash rougher, cleaner, and recleaner flotation, and (4) final product leaching. The technique eliminates the necessity of removing the water-insoluble slimes by mechanical or flotation desliming. Laboratory results demonstrated that the direct flotation procedure, when compared with conventional techniques, yielded equivalent or improved flotation results with equal or less reagent consumptions. The direct flotation method recovered 81.6 pct of the solid-phase kcl from carnallite ore and 79.7 pct of the kcl from sylvinite ore in final products containing 60.5 pct and 60.9 pct k20. A flowsheet incorporating the described flotation procedure is presented.
Publication Date
19810201
Document Type
OP; Conference/Symposia Proceedings
Fiscal Year
1981
NTIS Accession No.
NTIS Price
ISBN No.
0895204150
Identifying No.
OP 24-81
NIOSH Division
SLRC
Source Name
AIME Transactions
State
IL; UT
TOP