Heavy medium coal preparation control equipment, density control system thereof and density control method

A technology for density control and control equipment, applied in the density control system and the field of dense medium coal preparation, can solve the problems of requiring a long time to mix evenly, inaccurate detection, and large changes in the density of the suspension.
CN101837320AInactive Publication Date: 2010-09-22PANJI BRANCH OF FINLAY COAL DRESSING ENG & TECH BEIJING CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
PANJI BRANCH OF FINLAY COAL DRESSING ENG & TECH BEIJING CO LTD
Publication Date
2010-09-22
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention discloses a density control system of heavy medium coal preparation control equipment. The heavy medium coal preparation control equipment comprises a medium barrel (26) and separation equipment, wherein the medium barrel (26) and the separation equipment are communicated by a pipe (24). The density control system comprises a detection device (21), a control device (21) and a regulation valve (23), wherein the regulation valve (23) is communicated with a water source (28) and a pipe (24); the detection device (21) detects the density of suspension in the pipe (24) between the regulation valve (23) and the separation equipment; the control device (22) receives a detected density signal and compares a detected density with a preset density; when the detected density is smallerthan the preset density, the opening of the regulation valve (23) is controlled to reduce; when the detected density is equal to the preset density, the opening of the regulation valve (23) is controlled to be constant; and when the detected density is greater than the preset density, the opening of the regulation value (23) is controlled to increase. The density control system can reduce power consumption and production cost and can ensure the quality stability of a screen out concentrate coal product. The invention also discloses the heavy medium coal preparation control equipment and a density control method.
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Description

technical field

[0001] The invention relates to the field of coal preparation, in particular to a density control system for dense medium coal preparation control equipment. The present invention also relates to a dense medium coal preparation control device including the density control system and a dense medium coal preparation method. Background technique

[0002] With the rapid development of my country's national economy, energy consumption is increasing rapidly. As the main energy source in my country, the consumption of coal is also increasing.

[0003] In order to improve the utilization efficiency of coal and reduce the pollution to the environment, my country is implementing the "Clean Coal Technology Plan". Coal preparation is the basis of clean coal technology. It fundamentally improves the quality of coal products, improves the utilization efficiency of coal and reduces pollution to the atmosphere and the environment. At the same time, it can also significantly...

Claims

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