SU1459713A1 - Method of regeneration of ferromagnetic fluid from water emulsion - Google Patents

Abstract

The invention relates to the field of mineral processing and allows increasing the extraction of ferromagnetic fluid (FMF) and reducing energy costs. The regeneration of the FMF is necessary in the process of magnetohydrostatic separation. The separation is carried out in a temperature range of 25-40 ° C and the FMF is also heated to 25-40 ° C. The regeneration involves washing & W from the surface of the separation products with a water-washing composition (BOC) to produce an emulsion and separation products. Moreover, the BOC in front of the M1 is boiled down to 2-8 ° C. Then the emulsion is separated in a magnetic field in the BFM and BOC. By cooling the BOC, the FMF contained in the emulsion is also cooled. When cooling FMF from 40 to 2 s, its magnetization increases by 1.3-1.4 times, and extraction in a magnetic field - by 2-3%. In order to improve the quality of cleaning the surface of separation products, a solution of DT-7 synthanol is introduced as BOC. The solution of syntanol DT-7 is the oxyllated decyl tridecyl alcohols of fraction C, p-C, with a concentration of 0.2-0.5%. I. f-ly. i (L

Description

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The invention relates to the field of mineral processing and is intended for the regeneration of ferromagnetic liquid based on neutral hydrocarbon from an aqueous emulsion formed during the washing process of products of a magnetohydrostatic separation from ferromagnetic liquid with water or an aqueous solution of surfactants.

The purpose of the invention is to increase the recovery of ferromagnetic fluid, reduce energy consumption and improve the quality of cleaning the surface of separation products.

The essence of the method is as follows.

In the process of magnetohydrostatic separation, the ferromagnetic fluid needs to be regenerated in order to reuse it.

The regeneration of a ferromagnetic fluid consists in washing it from the surface of separation products with an aqueous composition and then extracting the ferromagnetic fluid in a magnetic field.

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from the aqueous emulsion resulting from washing.

Magnetohydrostatic separation is performed in the temperature range ZS-AO C,

The ferromagnetic fluid is also heated to 25-40 ° C. It is established that the magnetization of the ferromagnetic fluid at. cooling: up to 40 to 2 ° C increases 1.3- j 1.4 times, and extraction in a magnetic field increases by 2-3%.

: IN CONNECTION WITH THIS, WASHING A ferromagnetic liquid is produced by a water composition cooled to 2–8 ° C, followed by passing the cooled emulsion through a magnetic field. At the same time, the ferromagnetic fluid, containing - s in the emulsion, is cooled to 2-8 C.

If it is necessary to obtain a cleaner surface of the products of se- rivation, an aqueous solution of DT-7 synthanol is used as the aqueous composition, which is oxyethylated at 7 mol of ethylene oxide fraction, decyl tridecyl alcohols, with a concentration of 0.2- 0.5%.

Example. After magnetohydrostatic separation, 100 kg of the copper fraction, containing 2 kg of ferromagnetic bone on the basis of the surface, is washed with water cooled to 10 ° C. After washing, the aqueous emulsion is passed through a magnetic field. In this case, 1.95 kg of ferromagnetic fluid is extracted in the magnetic field, which is 97.5%.

Example2. Under the conditions of Example 1, the washing is performed with water cooled to. In this case, 1,966 kg of ferromagnetic fluid is extracted in a magnetic field, which is 98.3%.

Example. Under the conditions of the example.

1 washing is performed with water cooled to 2 ° C. With this in. The magnetic field recovers 1.9.67 kg of ferromagnetic fluid, which is 98.35%.

EXAMPLE 4. Under the conditions of Example 1, the washing is performed with water, cooled to 1 ° C. In this case, 1.967 kg of ferromagnetic fluid is extracted in a magnetic field, which is 98.35%.

In order to increase the efficiency of cleaning the surface of separated products as a water composition

use an aqueous solution of DT-7 synthanol with a concentration of 0.2-0.5%.

The effectiveness of this water formulation is illustrated by the following examples.

PRI me R. 5. Under the conditions of Example 3, wash with an aqueous solution of surfactants (DT-7 syntanol) with a concentration of 0.1%. The content of surface iron on the surface of the separation products after washing is 0.025%.

Example Under the conditions of example 3, washing is carried out with an aqueous solution of surfactants with a concentration of 0.2%. In this case, the content of surface iron on the surface of the separation products after washing is 0.01131%.

Example 7. Under the conditions of Example 3, wash with an aqueous solution of surfactants with a concentration of 0.5%. The content of surface iron on the surface of the washed products is 0,0130%.

ExampleB Under the conditions of example 3, washing is carried out with an aqueous solution of surfactants with a concentration of 0.6%. The content of surface iron on the surface of the washed products is 0,0130%.

Claims (2)

1. A method of regenerating ferromagnetic fluid from an aqueous emulsion, including washing the ferromagnetic fluid with an aqueous detergent composition from the surface of the separation products to produce an emulsion and separation products, separating the emulsion in a magnetic field into a ferromagnetic liquid and an aqueous detergent composition that in order to increase the extraction of ferromagnetic fluid and reduce energy consumption, the water-laundering composition is cooled to 2-8 C before washing. 2. A method according to claim 1, characterized in that, with a chain of improvement in the quality of cleaning the surface of separation products, a solution of DT-7 synthanol, which is hydroxyethyl decyl tridecyl alcohols of fraction C, p-C, C, is introduced as an aqueous detergent composition. concentration of 0.2-0.5%.