SU1518014A1 - Method of flotation clayey-carbonate slimes from potassium-containing ores - Google Patents

Abstract

THE INVENTION RELATES TO THE BENEFICIATION OF MINERAL RESOURCES AND CAN BE USED IN THE FLOTATION OF POTASSIUM ORES CONTAINING CLAY-CARBONATE SLUDGE. THE PURPOSE OF THE INVENTION IS TO INCREASE THE EXTRACTION OF SLUDGE INTO A FOAM PRODUCT BY ENHANCED FLOTATION ACTIVITY AND SELECTIVENESS OF THE COLLECTOR. A METHOD FOR FLOTATION OF CLAY-CARBONATE SLUDGE FROM POTASSIUM-CONTAINING ORES INCLUDES PRE-CONDITIONING OF THE PULP WITH POLYACTYLAMIDE, AN ADDITIONAL COLLECTOR, AND SEPARATION OF CLAY-CARBONATE SLUDGE INTO A FOAM PRODUCT. A COPOLYMER OF 2-ACRYLAMIDO-2-METHYLPROPANESULPHONIC ACID WITH 2-HYDROXYPROPYL METHACRYLATE OF THE FORMULA @ IS INTRODUCED IN THE CONDITIONING AS AN ADDITIONAL COLLECTOR, WHERE N = 48

M = 24. COPOLYMER HAS A MOLECULAR MATTER OF 13700, VISCOSITY OF 0.26, DECOMPOSITION TEMPERATURE OF 290-300°C. USING THE DESCRIBED METHOD ALLOWS TO INCREASE SLUDGE RECOVERY BY 2-10% WHILE REDUCING POTASSIUM CHLORIDE LOSSES WITH THEM.

Description

1

(21)4323922/22-03

(22)06.11.87

(46) 10/30/89. Bulletin No. 40

(71) Institute of General and Inorganic Chemistry of the Academy of Sciences of the BSSR and Institute of Physical-Organic Chemistry of the Academy of Sciences of the BSSR

(72)A. D. Markin, Kh. M. Aleksandrovich, L. F. Zhibul and L. N. Skripnichenko

(53)622.765.06(088.8)

(56) USSR Author's Certificate No. 668710, class B 03 D 1/02, 1979. USSR Author's Certificate No. 1377150, class B 03 D 1/02, 1986.

(54)METHOD OF FLOTATION OF CLAY-CARBONATE SLUDGE FROM POTASSIUM-CONTAINING ORES

(57) The invention relates to the enrichment of minerals and can be used in the flotation of potash ores containing clay-carbonate sludge. The purpose of the invention is to increase the extraction of sludge into a froth product by enhancing the flotation activity and selectivity of the collector. The method for flotation of clay-carbonate sludge from potassium-containing ores includes preliminary conditioning of the pulp with polyacrylamide, an additional collector, and the separation of clay-carbonate sludge into a froth product. A copolymer of 2-acrylamido-2-methylpropanesulfonic acid with hydroxypropyl methacrylate of the formula is introduced into the conditioning as an additional collector.

9.

-CHg-CH

p

CO

I

Ш1С(СНз)2СН280зНОСН2СН(ОН.)СНз

where w 24. The copolymer has a mol. wt. of 13700, a viscosity of 0.26, and a decomposition temperature of 290-300°C. The use is described. The invention relates to the enrichment of minerals and can be used in the flotation of potash ores containing clay-carbonate impurities.

The purpose of the invention is to increase the extraction of clay-carbonate sludge by enhancing the flotation activity of the collector.

SN,S (SNz)

with

I

HOCH2CH(OH)CH3

(L

This method allows to increase the extraction of sludge by 2-10% while reducing the loss of potassium chloride with them.

O1

ace

The essence of the described method and selectivity of the flotation action of clay-carbonate sludge from potassium-containing rutiles, including conditioning of the 11UL1 py with polyacrylamide, consists in the fact that in the process an additional RG-agent collecting clay-carbonate sludge, a copolymer of 2-acrylamide (a), and, 111 po II a HC y, I lyfo acids with IIi.Imsticri, 1 atom of the formula is introduced.

2-hydr|)()xi11ro-CII2-CH

with

CHj-CiCHj; CO

b NS(SNz)2С11.50зН 1ДС p/i 24.

OCH2CH(OH)

pSYA2 SLF-tSN2 S(SNz)

AIBN

with

OCH2CH(OH)CH3

(Li().1the sample has the following physicochemical properties: the decomposition temperature is 290 300 C, the static exchange capacity is 2.0 mg/g; the hydroxyl number, determined by the acetylation method, is (Sii ii KOH/G. The intrinsic viscosity is determined by the viscosimetric method (Y: OH, 25 (,)) and is 0.26. The molecular weight is determined by the osmometric method (osmometric method (Mi)u T) 302 V, t-Packarci), and is 13700. (The content of SO.iH-group in the composition is 47%). content Example. In the form of potassium ore with a particle size of less than 0.5 mm (content of potassium ore in water is 25.2%, non-saturated (n. o. 3.9%) and 120 1.1 saturated by KS 1 and .a(1 solution, introduced in the form of water |) solutions of pp.:|acr11,:1amide in the amount of

4(1

I / g and sopo. 1imer 2-acri,,

|||)о11анс.1ьфокислоть с 2-hydroxypropyl- megacry,1atom TiOO g/t ore. loc,:ie this was carried out by the fleet of PIU clays of carbonate iii. ia MOB.

(,comparative results of the fleet and the to-carb()nate 1n,1am()v with the use of the Copolymer was obtained in the environment of an organic solvent - ethyl alcohol by the method of free-radical copolymerization in the presence of a free-radical initiator - azoisobutyl nitrile (AIBN) - at atmospheric pressure in air

CH|-CH2-C(CH3CO

I in

C(CH3)2 CH2$O3H

with

OCH2CH(OH)CH3

5

0

0

The results of the experiments with polyacrylamide and a copolymer of 2-acrylamide-2-methylpropanesulfonic acid with 2-hydroxypropyl methacrylate (the described method), PAA and an adduct of ED-2() epoxy resin with diethylenetriamine (prototype) and PAA with oxanol 0-18 (base object) show that the proposed method, with equal specific consumption of the collector, provides, in comparison with the prototype, an increase in the extraction of n. o. into the sludge product by 1.1-9.6% with practically the same extraction of KCl into the sludge product (i.e. with practically the same losses of KCl with the sludge product).

Claims (1)

Formula of invention  (d1()C()b flotation of clay-carbonate sludge from potassium-containing ores, including preliminary conditioning of the pulp with polyacrylamide, an additional collector and separation of clay-carbonate sludge into a froth product, characterized in that, in order to increase the extraction of sludge into a froth product, a copolymer of 2-acrylamido-2-methylpropanesulfonic acid with 2-hydroxypropyl methacrylate of the formula is introduced as an additional collector