SU1327973A1 - Method of dressing iron ores - Google Patents

Abstract

The invention relates to the enrichment of minerals and allows an increase in technological performance by increasing the flotation activity of the collector. - The pulp is pretreated with modifiers, then conditioned with a cationic collector. As a cationic collector, propionium bis-quaternary 1,3-tetramethylpropanediamine salt of the formula (CH3H-N-CH2. -CH2-CHi-N- (CH3) 2cf Shngng II where R is a hydrocarbon radical with the number of hydrocarbon atoms from 7 to 10. Thereafter, a photographic process of non-metallic minerals is carried out, ropy-bis-quaternary salt I, 3-tetramethylpropane diamine is obtained by synthesis. To a solution of 12.4 g of tetramethylpropylene diamine in 50 ml of acetone are added in portions of 45.7 g nonchloroacetic acid decyl ester, maintaining the temperature of the reaction mass 40-50 ° C. As the mixture thickens C is added acetone (200 ml total). The precipitate is filtered, recrystallized from acetone-ethanol (10: f). Yield 60%, melting point. (L d:: o 00

Description

This invention relates to the beneficiation of minerals and can be used in the flotation of iron ores.

The purpose of the invention is to improve the technological indicators of flotation due to increased flotation activity of the collector 5.

Proponium bis-quaternary salt I, 3-tetramethylpropanediamine of the general formula

(CHj) .- 15-CH2 - CH2-CH - N-CCHs) - 2C1

CH2C%

CH2COORCH COOH

where R is a hydrocarbon radical with the number of carbon atoms equal to 7-10, is obtained by synthesis.

To a solution of 12.4 g of tetramethylpropylenediamine in 50 ml of acetone is added portions of 45.7 g of mono-chloroacetic acid decyl ester, maintaining the temperature of the reaction mass to 40-50 ° C. As the mixture thickens, add acetone (200 ml total ). The precipitate formed is filtered off and J is recrystallized from acetone-ethanol (10: 1). Yield 60%, mp, 70 ° C.

An example. The pulp of the magnetic middlings of oxidized iron ore with a mass, the share of iron, equal to 50.2%

when the ratio of liquid to solid, ralov, characterized in that it is 1: 3, is treated for 2 minutes with a depressant - starch, and then for 2 minutes with a collector - with propionium C (at a consumption of 250 g / t),

that, in order to increase the technological performance of flotation due to the increased flotation activity of the collector, to air conditioning as a cation, to increase the technological performance of flotation by increasing the flotation activity of the collector, to air conditioning, the flotation was carried out as a cationic 6 minutes 40 droponium bis is introduced (in the laboratory flotation machine F M-2M). The result is a chamber fraction with a mass fraction of iron of 64.2% and a foam fraction with a mass fraction of iron.

Example 2. A magnetite concentrate pulp with a mass fraction of iron of 62.6% and a particle size of 88.8% of the class-1,3-tetramethylpropanediamine 1,3-tetramethyl propanediamine salt of the formula

45

CCH b) 2-N-CH2-CH2-CH2-N- (CH5l2 C®

SNGSN

cH cooRShgsook

where R is a hydrocarbon radical with the number of hydrocarbon atoms from 7 to 10.

Editor N. Lazarenko

Compiled by S. Ivankov

Tehred A. Kravchuk. Proofreader L.

Order 3424/9 Circulation 511 Subscription

VNISh State Committee of the USSR

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Project, 4

20

thirty

ca - 0.044 mm with a liquid to solid ratio of 1: 3, is treated with a collector — Sd — propion (with races (150 g / t course) for 2 min, after which an FM-2M flotation is performed for 6 min. .

When used as a cation collector of reagents, the propony is the concentrate yield for. 0.6–1.7% higher, mass fraction of iron in concentrate is 0.2–1.3% higher, and extraction of iron into concentrate is 2.3% higher than in the known method.

15 Indicators of flotation re-enrichment of magnetite concentrates according to the proposed method, using a number of proponiums higher as reagent collectors than in the known method. Thus, the mass fraction of delta in the flotation concentrate in the proposed method is 0.2-1.2% higher and amounts to 69.6-70.6% against 69.4% in the known method, and the extraction of iron in concentrate is 0, Bbmie is 1-1.2% and is 76.2-77.4% versus 76.1% in the known method.

Formula inventions

A method for enriching iron ores, including preconditioning with a cationic collector and subsequent flotation of non-metallic minerals, characterized in

that, in order to increase the technological performance of flotation due to the increased flotation activity of the collector, in conditioning as a cation-quaternary salt of 1,3-tetramethylpropanediamine

CCH b) 2-N-CH2-CH2-CH2-N- (CH5l2 C®

SNGSN

cH cooRShgsook

where R is a hydrocarbon radical with the number of hydrocarbon atoms from 7 to 10.

Beskids

Claims (1)

Claim A method of enriching iron ores, including pre-conditioning with a cationic collector and subsequent flotation of non-metallic minerals, characterized in that, in order to increase the technological parameters of flotation by enhancing the collector's flotation activity, the proponium-bis-quaternary 1,3-tetramethylpropanediamine salt is introduced into the conditioning as a cationic collector of the formula [(.CH ^ g-B-CH ^ -CHgH-b3-CCH3 ^] · 2 C θ cn ₂ cn ₂ ch ₂ coor ch ₂ coor where R is a hydrocarbon radical with the number of hydrocarbon atoms from 7 to 10.