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Pulp mixing reinforced deep flotation technology process

A flotation and slurry mixing technology, used in flotation, solid separation and other directions, can solve problems such as affecting the yield of clean coal, insufficient contact between coal slime particles and flotation reagents, uneven flotation slurry, etc. Significant effects of coal recovery and sorting efficiency, surface floatability improvement, economic and social benefits

Inactive Publication Date: 2014-04-30
CHINA UNIV OF MINING & TECH (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Technical problem: The purpose of the present invention is to improve the problem of uneven floating slurry and insufficient contact between coal slime particles and flotation reagents in the coal slime flotation process, which will affect the yield and quality of clean coal. The high-efficiency flotation separation process for special coal slime, especially high-ash fine mud, solves the contradiction between clean coal ash and yield, tailing coal ash and yield in the process of sorting some special coal slime, and proposes A coal slime separation process with relatively simple process, significant economic benefits and high separation efficiency

Method used

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  • Pulp mixing reinforced deep flotation technology process
  • Pulp mixing reinforced deep flotation technology process
  • Pulp mixing reinforced deep flotation technology process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Such as figure 1 As shown, the flotation feed material is fed into the surface modification pulping machine through the feed pump to make a certain concentration, uniform and stable pulp, and at the same time the addition of chemicals is realized in the pulping machine; the pulping machine uses a certain The speed and time are used to strengthen the pulp adjustment, and the prepared pulp is automatically fed into the rougher flotation machine, and the fed pulp is floated by the rougher flotation machine to obtain flotation coarse and clean coal and rougher tailings. The tailing coal can be used as the final tailing coal. The coarsely selected clean coal then enters the selection flotation machine for selection operation to obtain the final clean coal and selected tailing coal. The selected tailing coal returns to the surface modification and pulping machine through the transfer pump Sorting again in order to improve the recovery rate of flotation clean coal.

[0018] S...

Embodiment 2

[0022] Such as Figure 5 As shown, the floating coal slime is fed into the surface modification pulping machine through the feed pump to make a certain concentration, uniform and stable slurry, and at the same time, the addition of chemicals is realized in the pulping machine. The speed and time are used to strengthen the pulp adjustment, and the prepared pulp is automatically fed into the rougher flotation machine, and the fed pulp is floated by the rougher flotation machine to obtain flotation coarse and clean coal and rougher tailings. The tailing coal can be used as the final tailing coal. The coarsely selected clean coal then flows into the primary selection flotation machine for a selection operation to obtain a primary selection of clean coal and a primary selection of tailing coal. The primary selection of clean coal then flows into the secondary The selection flotation machine carries out the second selection, and the second selection clean coal is obtained as the fin...

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Abstract

The invention discloses a pulp mixing reinforced deep flotation technology process for fine coal slime and particularly for coal slime with special characteristics of large high-ash fine slime content, difficulty in floatation and the like. The process includes: pumping floatation coal slime into a surface modification pulp mixer for pulping and adding an agent, allowing mixed pulp to flow into a roughing flotation machine (column), and performing separation to obtain roughed cleaned coal and roughed tailing; taking the roughed tailing as final tailing, allowing the roughed cleaned coal to immediately flow into a primary cleaning flotation machine (column) for cleaning to obtain recleaning cleaned coal and recleaning tailing, and returning the recleaning tailing to the efficient surface modification pulp mixer for second pulp mixing and floatation so as to increase cleaned coal recovery rate. If ash content is still high after primary cleaning, secondary cleaning is performed. By the adoption of the efficient surface modification pulp mixer, floatability of particle surfaces of the floatation coal slime can be improved, particles and the agent act fully, cleaned coal recovery rate and separation efficiency are high, and agent usage amount is small; economic and social benefits are remarkable.

Description

technical field [0001] The invention relates to a coal slime separation process, in particular to an enhanced slurry deep flotation process for high-ash fine sludge with high content and difficult-to-float coal slurry, which first strengthens slurry conditioning rough separation and then refines. Background technique [0002] The rapid development of the modern economy requires a lot of energy consumption, and the nature contains extremely rich mineral resources. These rich mineral resources are the source of energy needed. Only by using these mineral resources efficiently and environmentally friendly can the stable growth of the economy be guaranteed. , The rapid development of modern civilization. Among the abundant resources in nature, coal reserves are the largest. For a long time to come, with the depletion of petroleum energy, how to efficiently and cleanly utilize coal resources will be an urgent problem to be solved in my country's economic construction. [0003] T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/00
Inventor 李吉辉马力强王立雨姚立阳李文静刘柏阳岳建巍龚贵龙
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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