SU990314A1 - Collector for flotation of polymetallic ores - Google Patents

Description

(54) COLLECTOR FOR FLOTATION POLYMETALLIC

RUD

one

The invention relates to the mining industry and can be used in the flotation concentration of polymetallic ores.

The technical progress in flotation enrichment is mainly determined by the improvement of the reagent mode, the improvement of the methods of using flotation reagents, the development and introduction of new selective action of more efficient and non-toxic reagents.

It is known that xanthates (butyl, ethyl, isopropyl), aeroflots (dithiophosphates), dithiocarbamates, mercaptans are widely used for flotation of non-ferrous metal ores as collectors. They are used individually and in combinations in the flotation of sulfide and some oxidized non-ferrous metal ores 1.

But recently, the need for xanthates in other areas of the national economy has been increasing, and dithiophosphates show a rather low selectivity in the flotation of polymetallic ores.

Therefore, the search for new high-performance flotation reagent collectors is still relevant.

Known connection 1-thioneaphol

CjoHySH, obtained by the reaction of 1-chloronaphthalene with hydrogen sulfide in the gas phase. T. Kip. 142-143 ° (7 mm); nf 1,6802,

10 d 1.1607, viscosity reddish liquid. 1-Thionaphthol was identified by gas-liquid chromatography (GLC) with 1-thionaphthol obtained by a known method.

15

1-Thionaphthol is used as an intermediate in organic synthesis as an additive to oils, rosin illuminators, and also as a complexing agent 2.

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Claims (2)

The aim of the invention is to increase the technological parameters of flotation, expanding the range of effective, affordable flotation agents used in the flotation of polymetallic ores. The goal is achieved by using the formula 1-thionaphthol as a collector. V §H Example. For the experiments, the initial weight of lead-zinc ore (2 mm in size and 400 g in weight) is crushed in a ball mill to 75% -0.063 mm. The flotation of the crushed product was carried out with itiia .ri1 11 lt1 „1111l 1И1 1 / li L / vy, (j, i i 1 CI, 4-vi ut / i yj in a laboratory machine of a mechanical type with a capacity of 1.5 liters. The experiments were carried out according to selective flotation scheme under the following reagent mode: Grinding, g / t: sodium cyanide50 Zinc vitriol130 Primary lead flotation, g / t Sodium sulfide40 Lime600 1-Tioneftol - variable flow30-500 T-6620 Flotation time 6 min Control lead flotation, g / g : 1-Tionaphtol40 T-6615 Main zinc flotation, g / t: Lime1500 Copper vitriol350 1 -Tionaphthol - alternate30-500 T- 6615 Zinc flotation control, g / t: Lime350 Copper vitriol50 1-Tionaphthol40 T-6610 The collector is tested on lead-zinc ore. The results are compared with the results of experiments obtained using butyl xanthate, which was tested at the beneficiation plant, as collectors. as a collector of 1-thio naphthol, a consumption of 30–100 g / t in the main lead flotation, and 120 g / t in the main zinc flotation; The total extraction of metals in the concentrates of the same name is 172.3%, with tails being insignificant. The selectivity of 1-thionaphthol was good. Thionaphthol exhibits good collective properties even at low costs for the main lead flotation of 30 g / t to the main zinc float 60 g / t. At the same time, the tail loss is 3.13% for evin ....... - ..... w ....... .., .. u-. v, .v / y .. DN and 2.6% for zinc. The increased costs of 1-thionaphthol up to 200, 300 g / t Reduce the selectivity of the flotation process somewhat and increase the mutual contamination of the concentrates. Indicators for selectivity, extraction into concentrates of the same name, and also for losses with metal tails in the case of using 1-thionaphthol were obtained better than with butyl potassium xanthate. The total recovery is 172.3% with butyl xanthate. The total extraction of metals in the concentrates of the same name does not exceed 155.81%. The mutual contamination of the concentrates is much higher. The main advantage of the invention is that with the use of the new 1-thionaphthol reagent, the efficiency of the flotation process is improved, the selectivity of the flotation separation of lead and zinc minerals is improved. The invention claims the use of 1-thionaphthol of formula g 11 as a collector in the flotation of polymetallic ores. Sources of information taken into account in the examination 1. S. Mitrofanov. Selective flotation. M., “Nedra, 1967, p. 51-42. 2. USSR author's certificate number 653253, cl. C 07 C 149/28, 1978 (prototype).