SU698654A1 - Method of concentrating caolines and clays - Google Patents

Description

I

The invention relates to the enrichment of mineral raw materials and relates to the technology of producing homogenized enriched kaolins and glossy in granular form, which can be used in kaolite and ore processing plants, in the ceramic, paper, chemical and other industries.

A known method of enriching kaolin and clay in the presence of viscosity ionizing agents, which create conditions for the rapid dissolution of raw materials in an aqueous medium and the subsequent separation of suspensions according to particle size l. .

Sodium or potassium salts of inorganic acids, for example, liquid glass, phosphates, caustic soda, are commonly used as peptizers.

The disadvantage of this method of enrichment lies in the complexity of the enrichment process and the high additional costs in redistributing the enrichment process.

The closest to the technical essence of the invention is a method of enrichment of kaolin and clay, including crushing, disintegration in an aqueous medium in the presence of a peptizer of liquid glass with a silicon module of 2-3.5, the classification of pulp by size n dehydration 2.

The disadvantages of this enrichment process are the complexity of the enrichment process, due to the need to heat the pulp in the operation of disintegration with live steam to OO6 C, which causes additional costs in the redistribution process, high consumption of liquid glass, due to the need to create a pH of up to 9.5-10 and above which leads to its deposition on the internal walls of pipelines, pumps and mineral processing equipment.

Claims (2)

The purpose of the invention is to increase the recovery of aluminosilicates. 3This is achieved due to the addition of sodium or ammonium salts of humic acids to the disintegrant. The method is carried out as follows. The raw material with a particle size of 200/250 / -0 mm is dried to a moisture content of 3-10%, and the dried material is crushed to 25/12/0 mm, and the crushed raw materials disintegrate in an aqueous medium with a solid content not lower than 4070% with a temperature of about 20 ° C. in the presence of peptizers .- liquid glass and high-molecular compounds of sodium or ammonium salts of humic acids, the pulp is classified according to size to obtain a finely dispersed kaolin or clay concentrate in the form of a suspension with a solid content of 3.3-60% and an upper grain size. Part 0.056 mm, dew the concentrate suspension is revived by spray drying to a moisture content of 5.-15%. Condon ... waste after drying in the form of a free-flowing granulated mass with a grade of less than 0.056 mm in the range of 5%. The introduction of the sodium or ammonium salts of humic acids into a disintegrant -... tion allows creeping. quality quantitative enrichment indicators 44; extraction into kaolin concentrate (fugat) increased by 0.9%, and the content in concentrate by 0.7%, consumption of reagents decreased by 2 times. The technological enrichment process is simplified by using a suspension preheat to 40-60 ° C in a disintegration operation. Claims of enrichment method for kaolins and clays, including crushing, disintegration in an aqueous medium in the presence of a peptization agent - liquid glass with silicon 2-3.5, the pulp classification by size, dehydration, characterized in that in order to increase the extraction of aluminosilicates, disintegration is additionally introduced sodium or ammonium salts of humic acids. Sources of ins | | Ormatia taken into account during the examination 1. Golaburda A, F. et al. Production of kaolin, M., Tosstroyizdat, 1958, p. . 2. USSR author's certificate number 526385, cl. B 03 B 1/02, 1974 (prototype).