SU1327974A1 - Foaming agent for flotation of sylvanite ores - Google Patents

Abstract

The invention relates to the enrichment of minerals and makes it possible to increase the selectivity of separation. For this, 4-methyl-4-hydroxyethyl-1,3-dioxane of the formula CH2 CH20H is used as foaming agent for flotation of sylvinite ores. It has the following physical properties: t-ra boiling point 247 ° C; refractive index p 1.4633; the heat of evaporation at the t-re boiling point is 52.20 kJ / mol. The use of this foaming agent in the flotation of calcium chloride from sylvinite ore containing 27.7 - 28.3% of KC1 and 1.65-1.8% of insoluble sediment allows extraction of KC1 into concentrate by 0.5-1.8%, selectivity of separation according to Goden by 8-104 points. Removing the insoluble precipitate in the concentrate is reduced by 2.2-5%. (L

Description

The invention relates to the enrichment of minerals by the flotation method and can be used in enrichment plants of potash production.

The purpose of the invention is to increase the selectivity of separation.

The foaming agent 4-met1-t-4-hydroxyethyl-1,3-dioxane of formula

NgS CH-CH20H

V

f

has the following physico-chemical properties: 247 ° C, refractive density., Pr °, 1.4633, heat of evaporation at boiling point

52.20 --SS-. mole

The use of 4-methyl-4-hydroxyethyl-, 3-dioxane in the synthesis of isoprene is known.

This Frother was tested under laboratory conditions during the flotation of potassium chloride from sylvinite ore containing 27.7-28.3% KC1 and 1.65 - 1.8% insoluble residue (nos)

Example 1, Ore (fraction - 0.8-0.04 mm) is treated first with a sodium carboxymethylcellulose depressor (consumption of NaKMU - 250-10 kg / kg ore) and then with a collector, for example, with 1% aqueous octadecytamine (consumption ODA 4510 kg / kg of ore) and blowing agent (consumption of the blowing agent W-kg kg / kg of ore).

Air-conditioning time with depressor 120 s, collector and blowing agent 120 s.

Editor H, Lazarenko

Compiled by L. Kasatochkina Tehred A. Kravchuk

Order 3424/9

Circulation 511 Subscription

VNIIPI USSR State Committee

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

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

The flotation is carried out in a 1.5 liter laboratory float-bed flotation machine for 180 s. At a ratio W: T 2, 5,

The flotation foam product (concentrate) and chamber product (tails) are separated from the saturated saline solution on a Buchner funnel. ,

The use of the proposed blowing agent makes it possible to increase the extraction of potassium chloride in the concentrate by 0 (5-1.8%, the selectivity of separation according to Goden (6) by 8-104 points. When

this significantly reduces the extraction of the insoluble residue in the concentrate by 2.2-5%.

Use the cost of the proposed blowing agent less than 5 10 kg / kg of ore

and more than 510 kg / kg of ore is inexpedient, firstly, because of the difficulty of dosing small amounts, secondly, due to the lack of improvement in flotation rates. So the expense

The proposed blowing agent should be 5-L510 kg / kg ore.

Claims (1)

Invention Formula The use of 4-methyl-4-hydroxyethyl-1,3-dioxane formula HG CHrCHiOH five k as foaming agent in the flotation of sylvinite ores. Proofreader L. Beskid