SU908408A1 - Potassium ore flotation method - Google Patents

Description

(54) METHOD OF FLOTATION OF CALIINB1X ORE

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This invention relates to a technology for processing natural potash ores and can be used to obtain potash fertilizers from clay-free sulphate ores.

Known methods for the flotation of potash ores from potassium-containing raw materials by the flotation method using pine oil G, T-66 and various modifiers 2 as foaming agents.

The purpose of modifiers is to regulate the action of collectors and blowing agents, and to increase the effectiveness of their action.

The disadvantage of these methods in the processing of clay ores is to obtain low-quality fertilizers, reduced extraction of potassium chloride from the ore. This is a consequence of both the complex material composition of potash ores containing up to 5-7% clay-carbonate sludge and the ineffective and non-selective action of collector reagents (aliphatic amines) when used with the specified blowing agents and modifiers.

A known method of enriching potassium-containing ore, including treating the crushed ore with a modifier, conditioning with a.mino.m, introducing methyl isobutylcarbinol and flotation of LIA 3 chloride.

The purpose of the invention is to increase the technological indicators of the process of obtaining potash fertilizers from sulfate-free clay potassium-containing ores and an increase in the flotation rate.

This goal is achieved by introducing methyl isobutyl ketone into the conditioning.

The process is carried out at a pH of 6 to 8.

The method is carried out as follows.

The ore is crushed, pulping is treated with a modifier. Aliphatic amines are mixed with methyl isobutyl ketone in the flotation pulp 20, and then methyl isobutyl carbinol (MIBK) is added. The ratio of methyl isobutyl ketone with methyl isobutyl carbinol 1: 1.

The developed method makes it possible to increase the efficiency of the technological process of obtaining potash fertilizers due to the modifying effect of methyl isobutyl ketone and methyl isobutyl carbinol on colloid solutions of aliphatic amines (dispersion and stabilization of the amine).

Direct introduction of MIBK into the process provides enhanced hydrophobization of minerals due to co-adsorption of reagents.

As a result, the amine is evenly distributed over the entire surface of the KC1 minerals, hydrophobic minerals are required while reducing the amount of the gatherer, increasing the separation selectivity.

Example. Studies are conducted on

“Potash ore of large size (0, mm) of the following composition: KSb - 24.05%; NaCI -

68.09%; AND ABOUT. (insoluble clay

the balance) is 3.69%.

The pulp consisting of a mixture of crushed ore (particle size -0.5 + 0 mm) with an IMaCi and KCI saturated aqueous solution. G: T 3: 1, pH 6-8 with mixed mixing, injects with 2% solution of carboxymethylcellulose in the amount of 1000 g / ton of ore, to suppress clay .1 flames, and after 0.5–1 .min% a solution of octadedylamine hydrochloride prepared in omesi with methyl isobutyl ketone (c. the mixture of collector and foaming agent). Amine consumption. Changes from 100 to 80 p. Foaming agent consumption - 5-25 g / t. Then after I-3 min, the modifying agent — methylisobut: lcarbinol (MIBK) is introduced in an amount of 5-2.5 g / 7. After 0.5-1 minutes, pulp aeration is carried out under agitation for flotation, part. KCi.

A control experiment was carried out with pine oil under similar conditions, but without the introduction of a modifying agent () and a catcher. Pine oil is used as a control experiment, as it is used for the flotation of potassium chloride in the existing production associations "(ouzkali.

The data obtained confirm the high efficiency of the reagent regi.ma.

The optimal mode is the consumption of the ODE collector - 100 g / t, the total consumption of the foaming agent and modifier is 8-10 g / t,

In this mode, the technological parameters of the process are the best: the recovery of the COP is 98.05%, the content of KCI in concentrate is 87.1%, the efficiency of Hancock is 93.43.

While reducing the flow rate of the collector by 20% (80 g / t), the flotation indicators are also better than the results of the control experiment: recovery of 97.32%, KCI content in concentrate 87.50%, Hankoku efficiency 92.29. In addition, the flotation process itself accelerates 3 to 4 times.

The data show that the developed method of potassium flotation of the first ores allows to increase the recovery of CS from ore by 2%, to increase the content of KC1 in concentrate by 3%, to reduce the consumption of additives to the collector by 20%, to reduce the methyl isobutyl ketone by 2 times ) in comparison with the applied consumption of pine oil (10 g / t), the flotation process itself is 3-4 times faster.

Claims (3)

1. A method for flotation of potash ores, including treating the crushed ore with a modifier, conditioning with amine; 2. A method according to claim 1, characterized in that the process is carried out at a pH of 6 to 8. Sources of information taken into account during the examination 1.Pechkovsky V.V., etc. Tekhno.yugi potash fertilizers. Minsk, “Higher School, 1966, p. sixteen. 2. Belov V. N. and others. Extraction and processing of potassium salts, “Chemistry, 1971, p. 222 3.RJ “Mining, DB --- 72, 1976 (prototype).