SU967568A1 - Method of separating materials with close density values - Google Patents

Description

(54) SPOSES OF SEPARATION OF MATERIALS WITH URBAN

one

The invention relates to the beneficiation of minerals and can be used to enrich ores with close densities.

A known method of enrichment jigging in air 1.

The disadvantage of the jigging method is the impossibility of separating the material with sufficient accuracy.

The closest in technical essence and the achieved result to the invention is the method of separation of materials with similar densities, including the introduction of material into the separation zone, deposit and withdrawal of separation products 2.

The disadvantage of this method is the low separation efficiency of materials with similar densities.

The purpose of the invention is to improve the technological indicators of the separation process.

This goal is achieved by depositing it in an aqueous solution of zinc chloride with a density of 1.6 to 1.9 g / cm.

This density is optimal, since with a lower density value, the separation efficiency and the use of fluxes decreases.

The color plate becomes impractical, it is impossible to obtain greater density using zinc chloride.

The method is carried out as follows.

An aqueous solution of zinc chloride, enriched material is introduced into the depositing machine and the deposit is carried out.

ten

The use of zinc chloride will increase the coefficient of ease of separation, which is determined by the formula

15

Pl-p

TO

RL-R

where K is the coefficient of lightness,

division; pn is the density of the yellowness

20

minerals; f lung density

Miyeralov; f is the density of the medium.

For example, for fluorite

25 ore (fluorite in it has a density of 3.1 g / cm, quartz 2.65 g / cm) it will be for deposition in air

 1.169,

TO-

thirty

2.65

for jigging in water

. % 3.1 - 1.0

2.65 - 1.0 dl for the proposed process

/ 3.1 - -1.8 with 5 2.65 - 1.8 Example. To assess the efficacy of using zinc chloride instead of water, when conducting a jigging, comparative experiments on fluorite and ore are carried out.

The results are shown in the table. All experiments were carried out on a specially designed installation in the same jigging mode (.1 10 mm, n 320 1 / min, the amount of transport fluid 1 1, 2 m3 / t, the initial amount of underslip liquid 2 - 2.5).

The enrichment efficiency is estimated by the formula

: “- G

100,

g

100-ot

h, flurite recovery efficiency,%;

 fluorite extraction,%; concentrate yield,%;

I: fluorite content in the source material,%.

From the results of the experiments it can be seen that when switching to the use of zinc chloride, the separation efficiency sharply increases with a simultaneous increase in the quality of the concentrate.

Source class

Claims (2)

-3-fl mm 100.0 Claims The method of separation of materials with similar densities, including the introduction of material into the separation zone, the deposit and the withdrawal of separation products, characterized in that, in order to improve the technological performance of the separation process, the deposit is carried out 100.0 29.5 40 45 aqueous solution of zinc chloride with a density of 1.6 to 1.9 g / cm. Sources of information taken into account in the examination 1. Samlyly "N.A. Jigging M., Nedra, 1979, p. 101. 2. Tokin V.N. et al. Gravity enrichment methods. M., Nedra, 1980, p. 181-188.