Method for using refined coal magnetic separator tailings for flotation water-spraying foam removal

A clean coal and flotation technology, which is applied in chemical instruments and methods, wet separation, solid separation, etc., can solve the problems of increasing the load of coal slime water dehydration process, large investment cost of infrastructure, and increasing the load of flotation machines, etc., to achieve simplification Effect of management and maintenance work, reduction of grading work, reduction of investment

Inactive Publication Date: 2012-12-19
HENAN POLYTECHNIC UNIV
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Problems solved by technology

[0009] At present, the clean coal magnetic tail treatment process that is widely used has the following characteristics: ① The clean coal magnetic tail is first sent into a clean coal magnetic tail bucket, and a large clean coal magnetic tail bucket is located on the first floor, occupying a relatively large area. Large space, the capital investment cost is also ver...

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  • Method for using refined coal magnetic separator tailings for flotation water-spraying foam removal
  • Method for using refined coal magnetic separator tailings for flotation water-spraying foam removal
  • Method for using refined coal magnetic separator tailings for flotation water-spraying foam removal

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Embodiment Construction

[0031] The present invention will be combined with embodiment below (attachment Figure 4 ) The present invention is described in further detail.

[0032] like Figure 4 As shown, the clean coal magnetotail of the present invention is used as the flotation water injection defoaming method to propose an improved method for the characteristics of a section of overflow clean coal product of the three-product dense medium cyclone, which is a sorting-removal method. Medium—medium recovery—clean coal magnetic tail is used as a flotation defoaming water injection link (see Figure 4 ), making it suitable for the characteristics of the clean coal magnetic tail of the first overflow clean coal product of the three-product dense medium cyclone, especially suitable for the clean coal magnetic tail of the coal preparation plant with a particularly high content of fine-grained materials (-0.5mm) The technical transformation of the tail.

[0033] Technology of the present invention is ca...

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Abstract

The invention discloses a method for using refined-coal magnetic separator tailings for flotation water-spraying foam removal. The method provides an improvement method aiming at characteristic of first-section overflowing refined coal products of a three-product heavy-medium cyclone, which comprises the following steps of: separating, removing the medium, recycling the medium, and using the refined-coal magnetic separator tailings for the flotation water-spraying foam removal. Therefore, the method is suitable for the characteristic of the refined-coal magnetic separator tailings of the first-section overflowing refined coal products of the three-product heavy-medium cyclone, and is particularly suitable for the technical reform of the refined-coal magnetic separator tailings in a coal preparation plant in which the content of fine granular materials (-0.5mm) is high.

Description

technical field [0001] The invention relates to a coal preparation process, in particular to a clean coal magnetotail used for flotation water spray defoaming method. Background technique [0002] China is the world's largest coal producer and consumer, with coal reserves of 991.56 billion tons, accounting for about 70% of primary energy production and consumption, of which 84% are directly burned as thermal coal. The main energy structure will not change for quite a long time in the future. As the largest developing country in the world, China has sustained rapid economic development in the past 20 years, and the demand and consumption of energy have increased rapidly, and the environmental problems caused by the use of coal have become more and more prominent. With the gradual improvement of my country's environmental protection regulations and standards, the future energy composition will slowly tilt towards clean energy such as natural gas, hydropower, and nuclear energ...

Claims

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Application Information

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IPC IPC(8): B03B7/00
Inventor 王飞跃张义顺马娇史长亮刘高杨王红阳蒋函元
Owner HENAN POLYTECHNIC UNIV
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