土畑鉱山におけるL-P-F法について

抄録

The operation of a slime flotation in Tsuchihata Mill had been hindered by considerable quantities of soluble salts, mainly copper sulphate which amounts to about 0.16% Cu, contained in the crude ores, so that the extraction of copper had been very low.
However, in 1955, we started the laboratory test of a new process, “Leach-Precipitation-Flotation Process” to improve the slime flotation our.
Having got promising results we have put the process into a plant test, which showed nearly satisfactory results. Thus we have constructed the “L-P-F” plant in 1958.
In this paper, the following problems are described;
(1) Substitution of a copper ion using an iron powder as a precipitant.
(2) Floatability of a cement copper.
(3) Flotation test using a “L-P-F” process.
(4) Recovering method of unreacted iron powder in flotation tailing.
(5) Operation of the “L-P-F” plant.
(6) Trends of the slime flotation results.