SU706130A1 - Collector for flotation of non-sulphide ores - Google Patents

Description

one

The invention relates to the field of flotation concentration of ores.

For the flotation of non-sulphide ores, the use of carboxyl collectors 1 is widely known. (

However, these reagents have a relatively low selectivity of action, and the most effective of them, unsaturated fatty acids, are obtained from food products, are very scarce and have a high cost.

A well-known technique that makes it possible to increase the effectiveness of carboxyl gatherers is the use of halo-substituted straight chain carboxylic acids. In this case, chlorine substituted carboxylic acids are generally used 2.

A disadvantage of the prototype method and similar technical solutions is the low selectivity of the action of the collector.

Known compound o-alkyl-.a-chlorocarboxylic acids and their salts, which are synthesized on the basis of b-alkyl substituted acids obtained by the method of telomerization.

The aim of the invention is to increase the technological indicators of the enrichment of non-sulfide ores.

This goal is achieved by using a-alkyl-a-chlorocarboxylic acids or their water-soluble salts of the formula:

R / g

H (SNGNH) "- C-COOH,

se

where R-aliphatic hydrocarbon radical with the number of carbon atoms from 1 to 4;

M is hydrogen or metal; n 1-3.

The collector is tested in the flotation of a number of non-sulphide ores.

Example. Flotation of ore with a barite content of 11.3%.

Barite ore is treated with 0.1 kg / t with a mixture of sodium salts of y-alkyl-o-chlorocarboxylic acids of the type

R

I H (CHiCHi) n-С — COONa,

Claims (2)

C n 2 and 3; the weight ratio of telomeres Tt and T J in the mixture is 30 and 70%, respectively. 0.8 kg / ton of liquid, glass and 0.5 kg / ton of soda are introduced into the ore pulp. Thereafter, ore flotation is carried out with three cleaning of the froth product. The resulting product is barite concentrate. Compared with the effect of known reagents, the described collector allows increasing the extraction of barite into concentrate by 2.7-6.7% while maintaining the quality of the concentrate. Example 2. Sludges of gravitational enrichment of tungsten ore are treated with liquid glass of 2 kg / t, caustic potassium to a pH of 10.5 and a mixture of a-alkyl-a-chlorocarboxylic acids (0.4 kg / t) of type H (СНгСНg) „- С COOK. where R is methyl, ethyl and propyl. The weight ratio of telomeres R C, R Ci, R Cj is in a mixture of 30, 50 and 20%, respectively. Then, the main and two dry-cleaning floats are carried out with the addition of 50 g / t of liquid glass to the cleaners. Foamy product - shcheelit concentrate. As a result of the process, an increase in the extraction of NO in the concentrate by 2.6% was achieved. Example 3. The chamber product of sulfide flotation of molybdenum-and-celite ore is treated with 300 g / t liquid glass, 80 g / t sodium oleate and a mixture of a-alkale a-chlorocarboxylic acids (20 g / t) of type H (CHtCHa) "- C - COOH, where n 1-2-3; R CHS; the weight ratio of telomeres TI, Tr and Tz is 25, 60.15%, respectively. Next, flotation is carried out. Foamy product is a rough concentrate of molybdosheelite. Extraction of molybdenum in concentrate increased by 3.6% with some improvement in the quality of the concentrate. Thus, the main advantage of the invention is to improve the technological characteristics of flotation. The invention claims the use of a-alkyl a-chlorocarboxylic acids or their water-soluble salts of the formula H (CHiCH) n-C-COOM, where R is an aliphatic hydrocarbon radical with 1 to 4 carbon atoms; M is hydrogen, metal; n 1: -3, as a collector for the flotation of non-sulphide ores. Sources of information taken into account during the examination 1. V. V. Glembotsky et al. Flotaci, M., Nedra, 1973, p. 118-126. 2. US patent number 3353672, cl. 209-166, published. 1964 (prototype).