Flotation feed pretreatment device

Abstract

Disclosed is a flotation feed pretreatment device. Flotation feed and dilute water form jet flow respectively through a feed nozzle and a dilute water nozzle of a multi-nozzle jet device, negative pressure is formed in a mixing chamber, air and flotation reagents enter the mixing chamber through an air suction pipe and are cut and crushed at a high speed by the jet flow, the air is scattered into bubbles, the flotation reagents are emulsified into microfine oil droplets, and the flotation feed, the bubbles, flotation reagent emulsion and the dilute water enter a choke and a mixing mechanism, are sufficiently mixed to complete pretreatment of coal slurry inflation and bubble mineralization, and then enter a flotator tank through a discharging port. The flotation feed pretreatment device integrates pre-flotation concentration dilution, pre-mineralization, flotation reagent emulsification and even mixing of the flotation feed, the dilute water, the flotation reagent emulsion and the bubbles, achieves the purposes of improving flotation feed separation selectivity, reducing flotation cleans ash, improving clean coal yield and reducing consumption of the flotation reagents, and is fine in mixing effect, low in manufacturing cost and suitable for coal preparation plants on various scales.

Description

technical field [0001] The present invention relates to a pretreatment device for coal slime with particle size < 0.50 mm in wet coal preparation plant before being sorted by coal flotation machine, specifically coal slime with particle size < 0.50 mm in wet coal preparation plant (flotation feed) It is a flotation feed pretreatment device that integrates concentration dilution, premineralization, flotation agent emulsification, flotation feed, dilution water, flotation agent emulsion, and air bubbles before flotation. Background technique [0002] In 2010, there were about 1,800 coal preparation plants in my country, 95% of which were wet coal preparation plants. Flotation is the most mature and mature technology for wet coal preparation plants, especially wet coking coal preparation plants, for separating particle size < 0.5 mm. The most efficient sorting equipment. Before the coal slime enters the flotation machine, the flotation input material must be pretreated...

AI Technical Summary

Problems solved by technology

These existing pretreatment devices either have a single function, or have extremely complex structures and high manufacturing costs, and cannot be fully applied to coal preparation plants of various sizes

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