Flotation column system and method for sorting high-concentration pulp

Abstract

The invention provides a flotation column system and method for storing high-concentration pulp. The system mainly comprises a feeding pipeline, an upper flotation column, a lower flotation column, a returning pipeline, a scavenging pulp circulating pipeline and a tailings box. The method comprises the following steps: connecting the upper flotation column and the lower flotation column in series by a staggering manner; pumping in the pulp through a feeding pump; performing flow mineralization through a generation pipe of an upper bubble generator; enabling the material that has relatively high flotation to be preferably floated in the upper flotation column and discharged through a concentrate bin; feeding the materials that are not sorted timely into the lower flotation column for further storing through the returning pipeline under the control of a peristaltic pump. According to the flotation column system and method for storing the high-concentration pulp, the material with high flotation is pre-floated through the upper flotation column in order to lower down the concentration of the pulp entering the lower flotation column, and thus the effects of pre-sorting by the upper flotation column and highly storing by the lower flotation column is realized, sectional floating and sorting are realized, and as a result, the technical problem that the high-concentration pulp flotation clean coal quality and clean coal recovery rate cannot be ensured at the same time can be solved, and thus the phenomena of pollution of the clean coal and running of tailings are greatly reduced.

Description

Technical field [0001] The invention relates to a flotation column system and method for separating high-concentration ore slurry, which is especially suitable for the separation of high-concentration coal slurry and also suitable for the separation of other minerals. Background technique [0002] The slurry flotation equipment is mainly divided into two types: flotation machine and flotation column. Flotation machines mainly include mechanical stirring flotation machines and jet flotation machines. The main deficiencies of the flotation machine's sorting equipment are large power consumption, serious wear, large bubble size, insufficient dispersion, and shallow tank body, weak secondary enrichment effect, and better separation of very fine materials difference. The development of the flotation column has evolved from the traditional packed medium flotation column to a flotation column with a new type of aerator and a new structure, of which the cyclonic microbubble flotation c...

AI Technical Summary

Problems solved by technology

However, considering the phenomenon of clean coal entrainment and tailing coal run-off caused by insufficient mineralization and insufficient separation time when the slurry concentration is high, the processing capacity of the multi-product flotation column is limited, and the materials cannot be fully mineralized and let Unsorted pulp recycling

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