SU937024A1 - Frohting collector for flotation of coal slimes - Google Patents

Description

(54) COLLECTOR-PERFORMER FOR FLOTATION OF COAL SLEEP

one

The invention relates to the enrichment of minerals, in particular to the process of flotation of coal sludge.

It is known to use for the flotation of coal sludge products obtained in the processing of coal, as well as products of the chemical industry: soluble black carbolic acid (RCA) 1, a by-product in the production of rubber-foam 2.

However, the reagent — soluble black carbolic acid (RFC) —is a toxic product of coal processing — a scarce raw material in industry, and a foam reagent — an insufficiently effective reagent, its consumption in coal preparation factories exceeds permissible limits, and an increased residual concentration in the circulating waters leads to “foaming of the system.

Reagent T-66 is known, consisting mainly of alcohols of dioxolane and pyran series 3.

T-66 reagent is a toxic product, and special precautions are required when handling it. When flotation of coal sludge using T-66 reagents, insufficiently high-ash wastes are produced, this reagent also creates a hard-breaking foam.

The compound dimethyl (isopropylethynyl) carbinol is known, not previously used in industry 4. 5 The purpose of the invention is to intensify the flotation of coal slimes and exclude valuable products from the use.

The goal is achieved by the fact that, Q, dimethyl (isopropenylethynyl) carbinol of the following formula is used for flotation of coal slimes

sn,

he.

I I

sn,

n, c c – c c – c

he

derived from readily available acetylenic tetramethylbutyldiol.

Physical and chemical constants dimethyl

20 (iopropenyl ethynyl) carbinol:

Specific gravity. G / cm 30,08840

Boiling point, ° C 156-160 Refractive index 1.4700 Yield,% 62

Example. Coal sludge flotation was carried out using dimeML (isopropenylethynyl) carbinol at its consumption of 500 g / t. Flotation was carried out without the use of foaming agent. Control flotation was carried out using a known reagent T-66. Flotation results are given in.

Claims (4)

As can be seen from the table, the use of dimethyl (isopropenyl ethynyl) carbinol as a foaming collector makes it possible to increase the efficiency of coal flotation: the concentrate yield increases by 5.16%. Claims The use of dimethyl (isopropenyl ethynyl) carbinol as a foamer for flotation of coal slurries. Sources of information taken into account in the examination 1. El Shevich M. G. Flotation reagents for coal fine coal .- “The role of gases and reagents in the process of flotation. M., USSR Academy of Sciences, 1950, p. 162-172. its ash content decreases by 3.39%, the ash content of waste grows by 26.50%. The use of dimethyl (isopropenylethynyl) carbinol, obtained from readily available acetylene tetramethylbutyniol, as a reagent, compared with the existing method, provides a significant increase in the technical and economic indicators of the flotation process, associated with an increase in concentrate yield, a decrease in its ash content and an increased ash content, and the possibility of replacing products of oil refining and gas industry. 2. Vlasova, NS, et al. On the possibility of using a foam reagent in the flotation of coal slimes .- Coke and Chem. M., “Metallurgists, 1960, № 4. 3. Pikatt-Ordynsky G. A. and others. Technologists of flotation concentration of coal. M, “Nedra, 1972, p. 20-27. 4.Nazarov I.N. and others. Derivatives of vinylacetylene. - Lime USSR Academy of Sciences, Department of Chemical Sciences, 1940, p. 189 mess. 7 (prototype).