Microbubble enhanced mineral grading device

Abstract

The invention belongs to the technical field of coal slime water flotation and particularly relates to a microbubble enhanced mineral grading device. The microbubble enhanced mineral grading device comprises a material inlet chute, unit pools, clapboards, rectificate pipe bundles, outer side pool walls, inner side pool walls, pool bottoms, bottom flow pipes, control valves, connection pipes, sprayholes, bubble generating devices, air inflation pumps, air inlet pipes, inflow areas, outflow areas and a discharging pipe, after coal slime water evenly flows into the outermost unit pool through the material inlet chute, under the action of the gravity, the coal slime water moves downwards from the upper portions of the inflow areas of the unit pools and flows around to the outflow areas of theunit pools, the material inlet speed is controlled to be larger than the bottom flow speed, the outflow areas generate ascending water flow, particles of larger particle size are discharged from thebottom flow pipes, a gasified medicament is mixed with air to enter the unit pools through the bubble generating devices, and a bubble group is formed to float up the particles of smaller particle size rapidly, the fine particles floating up enter one next unit pool, the above work is repeated, and the whole grading process is finished. The microbubble enhanced mineral grading device is simple instructure and operates steadily, and the coal slime water grading efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of coal slime water classification, and in particular relates to a microbubble-enhanced mineral classification device. Background technique [0002] Coal still plays a dominant role in my country's national economic and social development, and coal washing and processing technology is an important guarantee for the sustainable development of coal, so the development of coal washing and processing industry is particularly important. There are problems such as low efficiency and serious pollution in coal washing and processing, so improving coal equipment is of great significance to the sustainable development of my country's social economy. [0003] In the prior art, coal slime water is generally directly flotation, but in recent years, with the wide application of mechanized coal mining technology and the continuous deterioration of raw coal properties, the content of clay minerals in raw coal has been incre...

AI Technical Summary

Problems solved by technology

There are problems such as low efficiency and serious pollution in coal washing and processing, so improving coal equipment is of great significance to the sustainable development of my country's social economy

[0003] In the prior art, coal slime water is generally directly flotation, but in recent years, with the wide application of mechanized coal mining technology and the continuous deterioration of raw coal properties, the content of clay minerals in raw coal has been increasing, and such minerals are easily separated by water. Broken into fine mud with high ash content, after entering the flotation system, it is very easy to adhere to the coal surface to compete with the adsorption agent, and affect the direct contact between coal and air bubbles, resulting in low yield of flotation clean coal, high ash content, and large consumption of agents And other issues

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