SU1713654A1 - Method of floating argillo-carbonate slimes from potassium- containing ores - Google Patents

Abstract

The invention relates to the technology of mineral processing and can be used in enterprises processing clay potassium ores. The purpose of the invention is to increase the technological parameters of flotation. Potash ore with a particle size of less than 0.8 mm, containing 20–21% potassium chloride and 5.6–6.5% insoluble residue (BUT) is subjected to rubbing for 20 minutes npw according to the ratio T: W = 1, diluted and treated with the collector-syntanol and ACSE-12 (30-120g / t) and flocculant-polyacrylamide 6m (20 g / t), conditioned for 60 s and floated for 240 s. Syntanol AC-SE-12 of the formula SpN2p + 10 - (CH2 - CH20) tN, where n = 16-20, m == 12, white or slightly colored paste. The reagent is used in the form of an aqueous solution. The method improves the extraction of insoluble residue in the slurry product ~ 1.2 p & The selectivity of separation increases ~ 1.2 times. 1 tab. (L

Description

The invention relates to the enrichment of minerals by the flotation method and can be used in enterprises processing clay potassium containing ores.

The known method of flotation of clay-carbonate slimes from potassium-containing ores with use of ethoxylated oleic alcohol (oxoLOL 0-18) as a collector.

However, the collector-oxanol 0-18 used in the known method is an expensive and scarce reagent, in

The known method does not provide a high separation selectivity in the operation of slurry flotation.

The known method of flotation of clay-carbonate sludges from potassium-containing ores using the composition of polyacrylamide-t-oxanol 0-18 + lignosulfonates, which is introduced into the process at a ratio of components from 1: 2: 3 to 4: 2: 3.

However, the known method does not provide a high separation selectivity. In addition, the use of a ternary mixture complicates the process of conditioning flotation reagents with pulp.

The known method flotats / 1 and clay-carbonate sludge using as a collector - glycerin tar.

However, when implementing the known method, the separation efficiency indicator is n extract. about . in the slurry

 product

The recovery of KCI into the slurry product is low and is 15.7 -.

The closest to the proposed technical essence and the achieved result is the method of flotation of clay-carbonate sludge using as a reagent-collector of the drug OS-20 (4).

However, the known method does not provide a high separation selectivity.

The purpose of the invention is to increase the technological parameters of the flotation of sludge per second, the gain of flotation activity and the selectivity of the collector.

The goal is achieved by the fact that in the method of flotation of clay-carbonate sludge from potassium-containing ores, including the conditioning of pulp with collector and flocculant and the separation of sludge into a frothy product, ACTS-12 synthanol of the formula

.CnH2n + lO- (CH2-CH20) m-H,

where p "16-20; t "12.

 - - t

Syntanol ACTS-12 is a white or slightly colored paste. Melting point 34 ° C. The color of the melt on an iodine color scale is not more than 5. The 10% aqueous solution of syntanol ACSE-12 is a clear, colorless liquid without mechanical impurities, which becomes cloudy on standing. The cloud point of the 1% aqueous solution of ACAN-12 syntanol in a 5% solution of sodium chloride is 65 - 70 ° C, the pH of a 10% aqueous solution is 8 - 9. Syntanol ACTS-12 contains polyethylene glycols not more than 2.5 %, water not more than 0.3%. ACENT-12 synthanol is used in CMC formulations. . The use of syntanol ACCE-12 in the operation of slurry flotation of potassium ores as a collector reagent is proposed for the first time.

The proposed method was tested under laboratory conditions.

PRI me R 1. Potassium ore with a particle size of (-0.8 - 0) mm, containing 20, 1 - 21.0% sodium chloride and 5.6 - 6.5% of the Insoluble residue (i.e.) is subjected 20 min at a ratio W: T 1. Next, the pulp is diluted to W: T 2.5 and treated with a collector and flocculant. ACCNE-12 syntanol is used as a collector in the amount of 30 g per 1 ton of processed ore. The consumption of flocculant 0.25% aqueous solution of polyacrylamide is 20 g per 1 ton of ore. The conditioning time of the pulp with the collector and. flocculant 60 s, flotation carried out for 240 s.

The remaining eimers of the flotation of clay-carbonate sludges from sylvinite ores (examples 2-5), as well as example 6 (known) are performed analogously to example 1.

The research results are presented in the table.

In accordance with the data application

The proposed method of flotation of clay-carbonate slimes makes it possible to increase the yield of the slurry product by 1.16-1.9 times, the extraction of the insoluble residue into the slurry product 1.1-1.25 times. At the same time, the separation selectivity is improved 1.2-2.48 times.

In the proposed method, the optimal collector consumption is 30 - 120 g per

1 ton of processed ore. The consumption of syntanol ACCE-12 not less than 30 or more than 120 g per 1 ton of processed ore (examples 4 and 5) is not advisable, as in relation to a known method (example 6) it is not

recovery of the insoluble residue is increased into the slurry product (winner 4) or the separation selectivity is not improved (approx. 5).

Thus, the application of the proposed method of flotation of clay-carbonate sludge. To improve the indicators of sludge flotation, characterizing the effectiveness of this process.

Claims (1)

Invention Formula Method for flotation of clay-carbonate sludges from potassium-containing ores, including conditioning the pulp with a collector such as synthanol and flocculant and the separation of sludge in the froth product, excluding and with the fact that, in order to improve the technological indicators of the flotation of sludge, as a collector ACTS-12 CnH2n + lO - (CH2 - CH20) tN, where P 4 16-20; t 12.