SU1286292A1 - Method of flotation of mineral resources - Google Patents

Abstract

The invention relates to the field of mineral processing and m. used in the mining industry. The purpose of the invention is to increase the recovery of the useful component and the quality of the concentrate. Simultaneously with the grinding of the raw material, the pulp is magnetically processed in a non-uniform magnetic field and the pulp with reagents is conditioned. Then flotation is carried out. A non-uniform magnetic field is created by ferromagnetic grinding balls. The intensity of the magnetic field to be created must be between 0.3 and 0.5 times the intensity at which the balls in the mill form a single body by the forces of mutual attraction. 1 hp f-ly. with S cl

Description

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The invention relates to the enrichment of minerals and can be used in the mining industry.

The purpose of the invention is to increase the recovery of the useful component and the quality of the concentrate.

Magnetic processing of the pulp is carried out during the grinding of ore simultaneously with conditioning with reagents supplied to grinding. The effect of magnetic processing is enhanced by the fact that the magnetic processing is carried out by a non-uniform magnetic field created by ferromagnetic grinding balls and balls. In order for the mill's performance not to be reduced due to the coupling of ferromagnetic balls in a magnetic field, the intensity of the magnetic field created must be between 0.3-0.5 of the intensity at which the balls in the mill form a single Approach body.

To implement the proposed method, laboratory tests on graphite ore were carried out, the results of which were compared with the results of laboratory tests of a known method. Ore is represented by non-magnetic minerals.

A hinge of graphite ore weighing 250 10 kg / kg, with a particle size of 3 + 0 mm was crushed in a ball mill. Grinding time 10 min. The ratio of solid-35 to the liquid to balls T: W: W 1: 1: 6. The fineness of grinding in all experiments was 45-47% of the class content of 0.074 mm. Sped reagents were fed to the grinding: kerosene - collector for graphite 560 10 ® kg / kg, calciner oil and soda - medium regulator 2

Flotation was carried out until complete removal of the foam product.

Conducted three series of experiments on three parallel experiences in each series. The result was taken from the average of three experiments. The first series of experiments - without magnetic processing, the second - according to a known method, magnetic pulp processing was carried out on the apparatus of the GIGHS design, a third - according to the proposed method. Magnetic processing in the second and third cases was carried out in optimal conditions.

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liquid glass - waste rock depressor 10 kg / kg. An expander of 2.-10 kg / kg was fed into the flotation.

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The data obtained show that the proposed method of flotation of minerals provides an increase in the extraction of graphite in the concentrate by 1.5%, an increase in the quality of the concentrate by 2.3%, and a decrease in the flotation time by 10%. Thus, the use of the method allows to increase the extraction of graphite into concentrate by 1.5% and the quality of concentrate by 2.3%.

Claims (2)

1. The method of flotation beneficiation of minerals, including the grinding of raw materials, the introduction of into the reagent pulp, conditioning the pulp with reagents, magnetic pulp processing, and mineral flotation, characterized in that, in order to increase the extraction of the useful component and the quality of the concentrate, the magnetic treatment is carried out simultaneously with the grinding of the raw material in a non-uniform magnetic field 2. A method according to claim 1, characterized in that the conditioning of the slurry with the reagents is carried out simultaneously with the grinding and processing in a non-uniform magnetic field. 40 45 Flotation was carried out until complete removal of the foam product. Conducted three series of experiments on three parallel experiences in each series. The result was taken from the average of three experiments. The first series of experiments - without magnetic processing, the second - according to a known method, magnetic pulp processing was carried out on the apparatus of the GIGHS design, a third - according to the proposed method. Magnetic processing in the second and third cases was carried out in optimal conditions.