SU1117084A1 - Regulating reagent for flotation of fluorite and fluorite-barytes ores - Google Patents

Abstract

The use of proteolytic preparation C as a reagent regulator in the flotation of fluorite and fluorite-barite ores. % (L

Description

00 4

one

The invention relates to the enrichment of minerals by flotation and can be used in the flotation of non-sulphide ores (fluorite and fluorite-barite).

It is known to use a large range of organic substances (starch, tannins, dextrin, quebracho, etc.) as depressants in the flotation of non-sulphide minerals and Cl ores.

However, these reagents are poorly soluble in water and their use does not provide high selectivity rates.

It is also known to use biological objects, for example, the Candida tropica es yeast biomass, as a regulator in the flotation of non-sulphide ores 2.

The disadvantage of using this reagent is that it also has poor solubility in water and requires preliminary alkaline treatment.

In the practice of flotation of non-sulphide ores, liquid glass and aluminum sulphate Z are used as waste rock depressors.

However, liquid glass is not enough selective depressor during flotation of fluorspar barite-containing ores

The use of liquid glass during the flotation process then requires the addition / leaking of special flocculants to clarify the pulp during the process of drying. And the process of obtaining liquid glass from silicate blocks directly at the processing plant requires high energy costs, aluminum sulphate causes contamination of the resulting concentrates and the environment.

The purpose of the invention is to improve the technical and economic indicators of the flotation process of fluorite and fluorite-barium ores by increasing its selectivity and reducing the consumption of the collector.

The goal is achieved by the fact that Ch7o as a reagent-regulator, a waste rock depressor, uses a proteolar enzyme complex - protease C, which is a by-product in the production of the cephalosporin antibiotic produced by the Cephafios-culture. porium acremortium. For flotation, a 1% aqueous solution of the proteolytic complex is used, different

170842

the amount of which depends on

the type and composition of the ore is fed into the flotation machine at 18-22C and pH 9.0-9.2. Under these flotation conditions, the enzyme complex does not show its known biological effect, but is a selective waste rock depressor.

Example 1. Flotation experiments Q on minerals with a particle size of 200 + 74 µm were carried out in a laboratory flotation machine with a chamber volume of 20 cm. Mineral weight was 1 g. Transfer time was 3 min. With reagents. Flotation time 3 min. Sodium oleate (flow rate 200 g / t) and Brakes e trispora fungus lipids (flow rate 200 g / t) (Fig. 1-3) and Table 1 were used as a collector, and the waste rock was used as a depressant. liquid glass, and in the second protease C. As can be seen from the table. 1 and FIG. 3, liquid glass, even at a flow rate of 400 g / t, does not depress barite, (removing 91.6%), while

when using the proteolytic preparation C (consumption 200 g / t), the mineral is practically not floated (extraction of 8.4%, Fig. 1 and 8.2%, -Fig. 2). Regardless of the collector, the proteolytic preparation - with well depresses the minerals of the bare rock - barite, calcite, while fluorite is extracted by 67%.

EXAMPLE 2: Flotation tests on 5 mixtures of minerals were carried out under the same conditions as in Example 1. The Btakes Pea trispora fungus lipids (2 kg / tonne) were used as collector. Four artificial mixtures of non-sulfide minerals of various size were investigated:

20% barite 200 + 74 microns and 80% fluorite 74 microns; 20% barite 74 microns and 80% fluorite and 200 + 74 microns;

20% calcite 200 + 74 microns and 80% fluorite 74 microns;

20% calcite 74 microns and 80% fluorite 200 + 74 microns.

0 After drying, the concentrate was dispersed on a 74 micron sieve and thus the yield of each mineral in the mixture was determined. As can be seen from the table. 2 and FIG. 4 and 5, the use of the proteolytic preparation is very effective in the flotation of mixtures of minerals, which is important for the processing of complex ores. During the | flotation of mixtures 1,3 and 4, it is possible 3 is almost full selection of waste rock minerals from fluorite. At the consumption of the proteolytic preparation C 4 kg / t, the extraction of minerals is: in a mixture of 1 barite, 9.5%, fluorite, 85.5%; in a mixture of 3 calcite 8.5%, fluorite 74.3%; in a mixture of calcite A 37.5%, fluorite 96.0%. Example 3. Flotation experiments on ore were carried out in a flotation machine with a chamber volume of 1 liter according to the scheme including sulfide, main and control fluorite flotation. The weight of ore is 250 g with a particle size of 65% class of 74 microns. Flotation time: sulphide; 15 minutes; basic, fluorite 6 minutes; control fluorite per minute; the following reagents were supplied to sulfide flotation: soda ash 700 g / t, xanthioate butyl 12 g / t, T-66 - 65 g / t, V Oleic acid was used as a collector for fluorite flotation (Table 3). Ore flotation was carried out under optimal conditions: sulfide flotation pH was 8.0; pH of the main fluorite flotation 9.0; At room temperature, As can be seen from Table 3, as a result of the replacement of liquid glass and aluminum sulphate with proteolytic preparation C, it is possible to reduce the consumption of oleic acid by 25–30% without decreasing the technological parameters of the flotation process. The use of a proteolytic preparation as a depressor instead of liquid glass and alkali sulfate makes it possible to avoid the introduction of silicon dioxide and aluminum cations into the process. which in subsequent processing of fluorite concentrates must be removed. Thus, the use of the proteolytic preparation C as a waste rock depressor makes it possible to improve the technical and economic indicators of the flotation process of fluorite and fluorite-barite ores by increasing its selectivity in extracting minerals and reducing the consumption of fatty acid collector by 25-30%, t, h, oleic acid, which is a scarce food product, I In addition, the replacement of liquid glass and aluminum sulphate with a proteolytic complex will also avoid the contamination of the finished concentrates with a doped SiOj and aluminum. The expected economic effect from the use of the invention is about 60 thousand rubles per year. Table 1 shows the comparative results of depression of non-sulfide minerals with a proteolytic preparation C and liquid glass during flotation with their various fatty acid collectors. Table 2 shows the selection of mixtures of minerals using as a depressor of the proteolytic preparation C (as a collector, lipids of the fungus Btakestea trispora 2 kg / ton are used). 3 shows the comparative results of flotation of a phosphate ore with the proteolytic complex Proteaa C and liquid glass, Table 1

BJakesSea trispora200 mushroom lipids g / t

About 95.6 76.0 76.894.4

25 94.4 38.0 63.2 69,492.5

50 93.9 16.6 44.6 50.289.0 94.196.2, 4.2 28.8 78.3 - O 67 .696.7 About 14.912 .796.1 Oleic acid 200 g / t

90.5

13.0 87.9 88.0 7.086.3

83.0

85.5

9.5

82.5

84.4

LO.

Continued table. 1 49,393,7 20, 18, 294,6 3,2О91, 6

Table 2

78.5 63,598.3

9.5

57,098,3

74.3 37,596.0

8.5

74.1 16,589.4

5.0 69.9 96.5 65.0 52.2 94.9 O74.9

Table 3

Oleic acid 550 Liquid glass 600

Aluminum Sulphate 650

Oleic acid 200 Protease C 400

Oleic acid 400 Protease C 400

100 I.

100 Fa & .2

200OOOOOO

Consumption of the drug With g / g. Dependency swt e / et / ra bttumofi) iSapt4maf2) 4e ecrmtHO Afoopumaf4i) ompacj (o & a preparation with Consumption of consumption / t-lipid epufa - 2 oo g

W frPig. The prevalence of orito (1, g) 11 Sapitma {t, l) caused by the growth of the depressor during the injection of cueeeii Hérale Hff and fi / 92, respectively.

Demolished fff (80% ifufoopumdf 70 Dreams Nfg-20% barite (7tHKn) tO% pjtfOt unto

g "

Consumption of preparation C, kg / t

t).

Claims (1)

REAGENT-REGULATOR FOR FLOTATION OF FLUORITE AND FLUORITE-BARITE ORES. The use of proteolytic preparation C as a reagent regulator in the flotation of fluorite and fluorite-barite ores.