SU1303195A1 - Method of flotation of fluorite ores - Google Patents

Abstract

The invention relates to the field of ore enrichment and allows to increase the extraction of fluorite, the quality of the concentrate and reduce the consumption of oleic acid (OC). Pre-mix the OK with an additional collector of microbial origin, as which the hydrolyzed yeast lipid (LDF) grown on n-paraffins is introduced. The ratio of OK and DHF is (1: 2.3) - (1: 4). GLD is obtained by hydrolysis of an industrial sample of microbial fat on n-paraffins with an aqueous-alcoholic solution of alkali at a temperature of 60-80 ° C for 1 h with a ratio of components, wt.%: Microbial fat on n-paraffins: ethyl alcohol: water: 0.33:: 0.264: 0.33: 0.066. As a result of hydrolysis, fats and phosphatides are destroyed with the formation of free fatty acids, stearins of higher alcohols, stearic esters, resinous substances. Then the pulp condition with modifiers and the mixture and lead flotation. The use of a mixture of OA and DHF allows an increase in the quality of the concentrate by 2.8–6.0%, extraction by 2.9–7.2%, and the consumption of OC can be reduced by 70–80%. 1 hp f-ly. with e (L with about with with JV

Description

This invention relates to the enrichment of ores by flotation, in particular fluorite ores.

The purpose of the invention is to increase fluorite recovery, concentrate quality and reduce oleic acid consumption.

During the flotation of fluorite ores, a mixture of yeast lipid hydrolyzate and oleic acid is introduced as a collector at a ratio of (2.33-1) - (4: 1) „

The hydrolyzed lipid of yeast FGD) was obtained for the first time in laboratory conditions. An industrial sample of microbial fat on n-paraffins (MHNP) is hydrolyzed with an aqueous-alcoholic solution of alkali at C-1 hour at a ratio of components, wt.% :. MHNP - ethyl alcohol: water: alkali equal to 0.33:: 0.264: 0.33: 0.066.

As a result of hydrolysis, fats and phosphatides are destroyed with the formation of free fatty acids, stearins, higher alcohols, stearic esters, resinous substances.

The composition of the organic part of the GMD, May.%:

Potassium or sodium salts of fatty acids60 Unwashed substances30 Resinous products 10

Non-removable substances are paraffin hydrocarbons, stearins and stearic esters, waxes, and higher alcohols.

Resinous products are formed as a result of the polymerization of the products of phosphatide destruction.

Example 1. Flotation enrichment was subjected to barite-carbonate fluorite ore, containing,%: fluorite 21.7; barite 10.7; 2.2 carbonates, silicates and aluminosilicates 69.9 (sample 1).

The enrichment process included the following main operations: grinding 75% of the ore to a particle size of 0.074 mm, grinding sour sodium 0.3–10 kg / kg, soda 1, kg / kg, basic fluorite flotation: liquid 0.4 kg / t, depressant (iron sulphate or aluminum sulphate) at 0.2–10 kg / kg, collector (LDF, oleic acid); six scrubbing concentrate: in the second and third scrubbing

ku - liquid glass at 0.2 10 kg / kg, in pt th - aluminum sulphate 0.5–10 kg / kg, steaming the concentrate of the third cleaning at 80 ° C for 20 min with sodium fluorosilicate O, 4 10 kg / kg ,

The middlings of all the cleanings, except the fourth one, were thickened and the second fluorite flotation was sent to the ng, to which liquid glass of 0.3–10 kg / kg and a collector of 0.04–103 kg / kg were supplied.

The middlings of the fourth cleanup (after steaming were sent to the dump. The foamy product of the middling flotation was sent to the main cycle, the chamber product to the dump. The main flotation time was 4 minutes, the cleanup was 2-3 minutes.

Example 2. Fluorite ore was subjected to fluorite ore containing,%: fluorite 20.9; calcium 1.65; barite 1.4 (sample 2).

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The processing of ore was carried out analogously to example 1. The difference is that the middlings of the fourth refining due to the high content of fluorite in it (17-20%) were sent to the middling flotation.

The experiments were carried out in a closed loop on the circulating water, purified from sulfuric acid suspensions (300-400 g / m) and in a sorbing-wet method to a stiffness of 0.3-L, 4 mg-eq / l.

For comparison, experiments were carried out with a mixture of oleic acid and microbial fat.

The results indicate that the GLD reagent is an effective substitute for oleic acid. It can replace 80% oleic acid.

The best flotation rates were obtained with a ratio of GDC: oleic acid equal to 2.33: 1 (for sample 1) and 4: 1 (for sample 2). By reducing the oleic acid concentration below 20% (4: 1), the flotation rates decrease. When the concentration of oleic acid is more than 30% (2.33: 1), the efficiency of the process is reduced.

Thus, the proposed method of flotation of fluorite ores using a new collector - a mixture of GLD and oleic acid - improves the quality of the concentrate by 2.8-6.0%, and the extraction - by 2.9-7.2%; reduces the consumption of expensive and scarce oleic acid by 70-80%, which reduces the cost

313031954

the flotation process for 840–960 rubles / ton with the mixture, distinguished by using more than that, in order to increase the cost of the reagent. to attract fluorite, concentrate quality and reduce the consumption of olein

5 acids, as additional

Claims (2)

Microbiological gatherer claims: lipid hydrolyzate 1, The method of flotation of fluorite ores, yeast grown on I-paraffins, including preliminary peremet 2. The method of pop. 1, distinguishing between oleic acid and supplementary feed and with the fact that the ratio of flying microbiological acid collector and hydrolysis product Of which origin, the conditioning lipids of yeast grown pulp with modifiers and semi-refiners are from 1: 2.3 to 1: 4.