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Low-rank coal maceral enrichment technology

A technology of micro-component, low-rank coal, applied in solid separation, wet separation, chemical instruments and methods, etc., to enrich the connotation, enhance the value of coal products, and enrich the product structure.

Active Publication Date: 2019-02-22
CHINA UNIV OF MINING & TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

The feasible and effective way is still dense medium separation, but low density and high precision separation must be achieved

Method used

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  • Low-rank coal maceral enrichment technology
  • Low-rank coal maceral enrichment technology
  • Low-rank coal maceral enrichment technology

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Embodiment Construction

[0029] In order to make the technical method of the present invention easy to understand, the technical solution of the present invention is described by using specific examples in conjunction with the accompanying drawings. It should be pointed out that the embodiments described here are only some of the embodiments of the present invention, rather than the entire implementation of the present invention, and their function is only to provide examiners and the public with a more intuitive and clear way to understand the content of the present invention. Rather than limiting the technical solution of the present invention. On the premise of not departing from the concept of the present invention, all other implementations that can be thought of by those skilled in the art without creative work, and other simple replacements and various changes to the technical solutions of the present invention, all belong to the protection scope of the present invention .

[0030] Such as fi...

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Abstract

The invention provides a low-rank coal maceral enrichment technology. The principal technology is characterized that a large-diameter dense-medium cyclone is used for pre-enrichment, and then a small-diameter dense-medium cyclone is used for selecting the finely ground clean coal; selecting a main process of the small-diameter dense-medium cyclone; 50 micron magnetite powder and fine-ground ganguemud are used as working media, so that the sorting precision under low-density sorting is guaranteed; a sieve bend, a high-frequency sieve and a disc-type magnetic separator are adopted as a core inthe medium recovery process, thus efficient recovery of magnetite powder is guaranteed. According to the technology, the enrichment of the low-rank coal maceral is realized, excellent coal-liquid rawcoal with vitrinite content greater than 70% is produced, and the comprehensive utilization of the low-rank coal is realized.

Description

technical field [0001] The invention belongs to the field of coal preparation and coal preparation for coal chemical industry, and relates to a method for enriching organic microscopic components of coal rocks, in particular to a process for enriching microscopic components of low-rank coal and coal rocks. Background technique [0002] Low-rank coal has the advantage of good reactivity, and is a high-quality raw material for coal-to-oil transformation. In particular, vitrinite is basically completely converted in the process of hydroliquefaction, while inertinite is an "inert component" for direct liquefaction, and the conversion is difficult. Therefore, the composition of organic microcomponents in coal rocks is the main factor affecting the oil recovery rate in the process of coal-to-oil conversion, and it is also the basis for other high-efficiency coal chemical processes. [0003] This paper mainly uses the properties and differences of coal rock microcomponents, adopts ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B7/00B03B9/00
CPCB03B7/00B03B9/005
Inventor 王大鹏朱子祺李琛光胥萌
Owner CHINA UNIV OF MINING & TECH
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