SU1115807A1 - Method of flotation of phosphorus-containing ores - Google Patents

Abstract

METHOD FOR FLOTATION OF PHOSPHORUS ORE, vklyuchak tions conditioning the pulp with the regulator, a mixture depressants - waterglass and sulfitspirtova bard and collector, characterized in that, in order to increase technological indices apatite flotation by enhancing depression silicate and mica minerals, a mixture depressants additionally administered t carboxymethylcellulose, while the ratio of liquid glass, sulfite-alcohol stillage and carboxymethylcellulose is 0.44: 1: 0.33 - 1: 7.5: 1.5. (L

Description

ate

00 The invention relates to the enrichment of minerals and can be used to process Apatite-silicate-carbonate ores complex in composition. The known method of flotation of non-sulfide minerals using a depression mixture containing starch, ethoxylated aliphatic alcohols and alkyl phenols, esters of fl3 polyhydric alcohols. The mixture is effective only in the flotation of ores of a constant, substantial composition containing clay-carbonate minerals and does not cause complete depression. in the flotation of ores containing, in addition to the above minerals, magnesium silicates. The closest to the proposed technical essence and achievable result is the method of flotation of phosphorus-containing ores, including co-ionization of the pulp with a regulator, a mixture of depressors - liquid glass and sulfite-alcohol bard, and a collector of L2 3. The known depression mixture is effective only when enrichment of mineral-stable ores containing carbonates, quartz and ferruginous minerals (martit, hematite) and low content (up to 5-7%) of silicate minerals. The known depression mixture is not effective for the flotation of phosphorus-containing ores, such as the Seligdar deposit, characterized, in addition to the content of carbonates, quartz and ferruginous minerals, as well as silicate and micaceous minerals. The purpose of the invention is to increase the technological indicators of the flotation of apatite by increasing the depression of silicate and micaceous minerals. The goal is achieved by the method of flotation of phosphorus-containing ores, including the conditioning of pulp with a regulator, a mixture of depressors - liquid glass and sulfite-alcohol bard and a collector, in addition to the mixture of depressants carboxymethylcellulose, while the ratio of liquid glass, sulfite -alcoholic stillage and carboxymethylcellulose is 0.44: 1: 0.33, 5. The introduction of an additional organic modifier of carboxymethylcellulose into the depressant mixture in the proposed ratio with other ingredients allows to eliminate the dependence of enrichment indicators on the material composition of the raw material due to controlled hydrophilization of the surface of the host minerals and thereby increase the technological parameters of apatite flotation. Three mixtures of ingredients containing liquid glass (TU 6-15-433-75), sulphite-alcohol bard (pulp and paper waste), carboxymethylcellulose (organic anionic polymer) were prepared for the preparation of a depression mixture. Each mixture contains, by weight.h .: liquid glass 1, sulfite-alcohol bard 1, and differs from each other in the content of carboxymethylcellulose, the weight in each mixture is consistent, h.: 0.33, 1.2, 1.5. The mixture is prepared by simply mixing the ingredients, and the order in which the reagents are supplied is not regulated. The method is carried out as follows. The crushed ore is preconditioned with a regulator, a mixture of depressors — liquid glass, sulfite alcohol stillage and carboxymethylcellulose, treated with a collector and floated. Example 1. Tests of the described depression mixture were carried out on phosphorus-containing apatite ore from the Seligdar deposit, characterized by the following composition,%: dolomite 9-10, calcite 2829, hematite 6-7, gypsum and anhydrite 0.40, 5, silicate minerals 25-30, quartz 11-15. The content of apatite in labor is 16-17%. The crushed ore with a particle size of 0.074 mm is processed in the presence of a reagent-regulator (soda ash) with a depression mixture, including water glass, sulfite-alcohol bard (PRB) and carboxymethylcellulose (CMC), then the pulp is conditioned with a mixture (1: 1) of collectors, including N-acylamino-acetylamino-acetylamino-acetylamino-acetylamino-acetylamine. sodium (talloktam) and alkylhydroxamate (IM-50), at a flow rate of 0.3 kg / t. Flotation is carried out according to the scheme, including the main and 2-3 roughing operations.

Depression mixtures were tested, each containing liquid glass, PRS and CMC.

Example 2. Tests were carried out on phosphorus-containing apatite ore from the Seligdar deposit, containing,%: dolomite 5A-55, calcite 12-13, hematite 4-5, gypsum-anhydrite 0.5, quartz 11-15, and silicate minerals 7.0. The content of apatite in the ore is 15-16%. Ore flotation is carried out analogously to example 1.

The quantitative content of the components and the results are shown in the table.

Liquid glass 1

.2,5 13,39

one

0.33

9.7 17.69

Liquid glass 1

PRS

1.2

glass1

10.3 18.92

one

1.5

glass1, 7.5

7.25 15.92

V

1.5

glass 0.33

33.25 22.73

0.8

0.24 ep 2

glass1

66.85 1.15

39.15

34.98

85.82 0.32

86.58 0.35

35.88

37.1

75.33 1.0

26.7

77.21 0.38

Continuation table

The results of laboratory tests show that the proposed technical solution, compared with the prototype, expands the technological capabilities of the depressive mixture, which allows to obtain high technological parameters (to increase the extraction of phosphorus pentoxide from 77% to 81-86% to higher grade 39% concentrates). flotation of apatite ores of different material composition.

The use of the proposed depression mixture can be carried out in industrial practice without changing the existing scheme.

S

1115807 Continuation of the table

In comparison with the base object, for which a depressive mixture was adopted, used in the flotation method incorporated in the project of the Seligdar Mining and Processing Plant Apatite Combine, the proposed mixture yields an economic effect of 812.62 you-rub. in year.

If we accept the proposed mixture, it allows injecting 6 processing refractory phosphorus-containing raw materials, thereby expanding the country's phosphate raw material base and obtaining concentrates suitable for the production of mineral fertilizers important for agriculture and the successful solution of the USSR food program.

Claims (1)

METHOD FOR FLOTATION OF PHOSPHOROIC-CONTAINING ORES, including conditioning pulp with a regulator, a mixture of depressants - water glass and sulfite-alcohol stillage and a collector, characterized in that, in order to increase the technological parameters of apatite flotation by enhancing the depression of silicate and micaceous minerals, carboxymethyl is additionally added to the depressant mixture, the ratio of liquid glass, sulphite-alcohol stillage and carboxymethyl cellulose is 0.44: 1: 0.33 - 1: 7.5: 1.5. £ 08211 G ”OS. 1 115807