Pre-separation process of coal slime flotation

A coal slime and flotation technology, applied in solid separation, chemical instruments and methods, wet separation, etc., can solve the problems of excessive increase in flotation system processing capacity, unfavorable comprehensive utilization of resources, and impact on flotation indicators, etc., to achieve high efficiency And the effect of stabilizing the flotation product index, simplifying the flotation environment and reducing the production cost

Inactive Publication Date: 2014-06-04
LIAONING TECHNICAL UNIVERSITY
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  • Abstract
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  • Claims
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AI Technical Summary

Benefits of technology

This technology helps prevent damage caused by excessive deposition on equipment used for processing coal during its manufacturing processes. It also removes large amounts of ash from the raw coal that could be harmful or even dangerous when it comes into contact with human health if they come directly outdoors without being treated properly. By doing this, these benefits improve overall performance and safety standards while reducing environmental impacts associated therewith.

Problems solved by technology

The technical problem addressed in this patented text relates to improving the performance of coal treatment systems while reducing their size without compromising beneficial properties like upgradability. This can be achieved with various techniques that involve treatments involving different types of materials (fine particles) together.

Method used

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  • Pre-separation process of coal slime flotation

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Embodiment Construction

[0009] Examples, see attached figure 1 , The pre-tailing process of flotation slime is to use a hydrocyclone treatment process with a small cone angle before the flotation slime enters the flotation to realize the pre-tailing of the flotation slime. The process is as follows: Fully stir the slime water in the coal slime pool of the coal preparation plant, and after being stirred and mixed evenly, it is classified by the thickening cyclone, the underflow is used as coarse clean coal, and the overflowing slime water is overflowed by the thickening cyclone. The flow feed pipe 1 enters the buffer mixing tank 3. The height of the buffer mixing tank 3 is less than or equal to 1000mm, the cone angle of the cone part of the barrel body is less than or equal to 7 degrees, and the diameter of the overflow feeding pipe is less than or equal to 150mm. The coarse sieve plate 2 installed on the upper side of the mixing tank 3 removes the coarse particles, and the overflow coal slime wa...

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Abstract

The invention belongs to a coal slime flotation method in coal mine production and particularly relates to pre-separation process of coal slime flotation. Slime water of a coal preparation plant is evenly mixed, after the slime water is graded through a concentration hydrocyclone, underflow serves as coarse clean coal, overflow slime water passes through an overflow feeding pipe of the concentration hydrocyclone to enter a buffering agitator (3), a coarse separating screen plate (2) arranged in the buffering agitator (3) in an inclined mode is utilized to remove large particles, the overflow slime water enters the buffering agitator (3) after the coarse particles are removed, the overflow slime water is evenly mixed, and the slime water evenly mixed in the buffering agitator (3) is pumped into the left end of a first feeding pressure stabilizing pipe (5) connected with the upper portion of a first hydrocyclone (7) through a feeding slurry pump. Fine pea coal, low ash content fine fraction coal and non-coal mine coenobium parts are discharged from a bottom flow opening (10) of a taper angle hydrocyclone of a first hydrocyclone set and enter a section of a bottom flow buffering pond (11), and high ash content granule minerals are discharged through an overflow pipes (14) at the upper ends of small taper angle hydrocyclones in a second hydrocyclone set. Compared with prior art, the pre-separation process of coal slime flotation can achieve pre-separation before coal slime enters a flotation system.

Description

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Claims

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Application Information

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Owner LIAONING TECHNICAL UNIVERSITY
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