SU570391A1 - Method of treating small-grain materials - Google Patents

Description

3

Wazug salt JCUC.IOTV. PHAMC passing through the reactor, the suspension is filtered off, the resulting precipitate is washed with water and dried.

When processing diatomite with a total content of metal oxides of 2.6-3%, the residual content of the latter after treatment is 0.01%. When processing perlite with a content of impurities of metal oxides in it 7.4%, the residual content of the latter after treatment is 02% and, finally, when processing clays, where the content of impurities of metal oxides is 11.3%, the residual content of the latter after processing is em 2.2%.

Example 1. A 20% suspension of diatomite Dl-: Radzor deposit with a total content of metal oxides II and HI of 2.6% in 5% hydrochloric acid is fed under a pressure of 3.2 atm to a Khachatr apparatus with a nozzle diameter of 5 mm The volumetric feed speed of the suspension is 3.35 l / s (the linear speed under these conditions is 170 m / s). After passing through the apparatus, the suspension is filtered, the precipitate is again stirred with water and fed to the second Hatchatr apparatus, which is similar to the first one, to be washed at the same speed. The washed product is filtered and dried.

The content of metal oxides IB treated product 0.01%.

Example 2. A 15% suspension of perlite containing metal words of 7.4% in 5% SALTIC acid is treated as in Example 1 with a slurry feed rate of 2 l / s (linear speed of about 100 m / s).

(The content of metal oxides in the treated perlite 0.02%.

Prnmer 3. A 12% o-gline glutinous with iron oxides content of 11.3% in 10% hydrochloric acid is treated in Example 1. At a slurry feed rate of 4.9 l / min (linear velocity of 250 m / s ). The content of oxygens of iron in clay after treatment is 2.1%.

When carrying out the treatment by the proposed method, the process of diffusion of the liquid in the pores of a solid material is intensified, which leads to an increase in the rate and completeness of chemical reactions proceeding on

solid and liquid interface. Practically, this makes it possible to achieve a more complete removal of impurities from the solid material, which react with the liquid phase, when the process is carried out in relatively soft

conditions (at a temperature close to; compressor, and with a reduced concentration of liquid reagent).

Claims (2)

1. A method of processing fine-grained materials, including mixing the latter with the liquid phase, filtering the resulting suspension and washing the precipitate, about the fact that, in order to increase the extent of impurities from the processed material and intensify the process, the mixing is carried out in a hydraulic mode. 2. A method according to claim 1, in which the hydraulic regime is created by supplying the initial mixture at a speed of 100-250 m / s to the reaction chamber, for example, the Khachatr apparatus.