SU799821A1 - Method of concentrating feldspar quartz containing pegmatites and granites - Google Patents

Description

one

The invention relates to the enrichment of non-sulfide minerals by the method

flotation, namely the separation of feldspars and quartz.

 Methods are known for flotation separation of quartz and feldspar using anionic collectors and heavy metal salts to activate feldspar. in a highly alkaline medium. And.

However, anionic flotation does not provide a clear separation of feldspar and quartz.

 A known method of enrichment of feldspathic ores, shutdowns, flotation separation of ore minerals

 and mica pulp processing. a fluorine-containing regulator, a cationic cone breaker and a mixture of lime, kaolinite and montmorillonite 2J.

The disadvantage of this method is the high consumption of the fluorine-containing regulator, which necessitates the use of large expenses of reagents for the purification of wastewater from fluorine,

The purpose of the invention is to reduce the toxicity of the process by reducing the consumption of the fluorine-containing regulator.

: The goal is achieved by the fact that after the introduction of the cationic collector, the pulp is conditioned with polyacrylamide and the flotation of feldspar is carried out in an acidic medium at a pH of 1.8-2.5.

The method is carried out as follows.

Ore is crushed, pulped, flotation of ore minerals and mica. Then the pulp is treated with ammonium bifluoride, a cationic collector, polyacrylamide are introduced and feldspars are floated. Quartz concentrate with 5 receive in the form of a chamber product. Optimum separation performance of quartz and feldspar is achieved at a pH of 1.8-2.5.

Example 1-. The experiment was carried out on the tails of the flushing of ore minerals after preliminary removal of mica from them by flotation with an amine at pH 2.0-2.5. Flotation tails have the following mineral composition,%:

5 quartz - 34.1, albite - 42.4, microcline - 15.6, muscovite - 4.60, biotite - 0.70, shale - 0.15, and others 2, 95.

The separation of feldspar and quartz is carried out in one stage. Pulp

agitate with ammonium bifluoride 1, 5 kg / t and ANP-2 - 0.9 kg / t at a pH of 1.8-2.5 for S min. Prl-acrylamide (PAA) is then introduced and the pulp is conditioned for 3 minutes. After that float the feldspars.

The implementation of the method 2 times reduces the consumption of ammonium bifluoride and eliminates the need for the use of sorbents. (,

Example 2. The separation of field spars and quartz is carried out in two stages. In the first stage, the pulp of processing ANP-2 is 0.6 kg / t for 5 minutes, then with PAA for 3 minutes at a pH of 1.8-2.5 and the field spars are floated for 5 minutes. Then the chamber product is treated with ammonium bifluoride - 1.5 kg / t and ANP-2 - 0.3Kr / agitate for 5 minutes and feldspar is floated for 3 minutes. The frothy product of both the flotation stages is combined. The consumption of ammonium bifluoride in this case is reduced by more than 2 times compared with the known method. The amount of fluorine-containing water to be purified from fluorine has been reduced.

Thus, o6pia3OM, the main advantage of this invention is

reducing the toxicity of processing feldspar ores.

Claims (2)

1. The method of enrichment of feldspar quartz-containing pegmatites and granites, which consists in flotation of ore minerals and mica, the treatment of pulp with ammonium bifluoride in an acidic environment, the introduction of a cationic collector and the flotation of feldspars, and the use of so that, to reduce the toxicity of the process by reducing the consumption of ammonium bifluoride 15, after the introduction of the cationic collector, the pulp is conditioned with polyacrylamide. 2. Method POP.1, characterized by the fact that field flotation Spar spar is carried out at a pH of from 1.8 to 2.5. Sources of information taken into account during excursion 1.Revnivtsev V.I. Enrichment 5 feldspars and quartz, M., Nedra, 1970, p.68. 2. Authors certificate of the USSR. 568459, cl. At 03 About 1/00, 1975.