Power coal and sulfur concentrate sorting method and special device thereof

A sorting and electric coal technology, applied in chemical instruments and methods, magnetic separation, solid separation, etc., can solve the problems of large investment, low calorific value, high operating cost, etc., to meet the follow-up process, reduce production pressure, and improve grade Effect

Inactive Publication Date: 2009-06-17
重庆南桐矿业有限责任公司选煤厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the existing technology and equipment, there is no system that can not only separate the low-calorific coal with a certain calorific value from the gangue into the electric coal, but also discharge the high-density gangue with a very low calorific value. The establishment of gangue sorting system requires large investment and high operating costs

Method used

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  • Power coal and sulfur concentrate sorting method and special device thereof
  • Power coal and sulfur concentrate sorting method and special device thereof
  • Power coal and sulfur concentrate sorting method and special device thereof

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Embodiment Construction

[0051] Below in conjunction with accompanying drawing and embodiment example, the present invention will be further described:

[0052] As shown in Figures 1 and 2, a sorting method for electric coal comprises the steps:

[0053] (1) Sorting the mixture of raw coal and dense medium suspension into a dense medium cyclone to obtain a density of less than 1.5g / cm 3 Clean coal and density greater than 1.5g / cm 3 mixture of medium coal and gangue;

[0054] (2) Sorting the mixture of medium coal and gangue into a dense medium cyclone with a taper of 45°-120° at the bottom outlet to obtain a density of less than 1.8g / cm 3 Medium coal and density less than 2.5g / cm 3 gangue mixture;

[0055] (3) Put the mixture into the medium coal arc sieve for de-intermediation, the under-screen material enters the coal media barrel, and the over-screen material enters the medium coal de-intermediation screen;

[0056] (4) The oversize material that enters the medium coal removal sieve is further...

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Abstract

The invention discloses a method and a special device for separating thermal coal and sulfur concentrate. The method comprises: subjecting a mixture of raw coal and heavy medium suspension to the separation of a heavy medium cyclone, wherein a mixture of middlings and waste rocks separated by the heavy medium cyclone are placed into the heavy medium cyclone again to separate the middlings and the waste rocks. The process and the special device can separate middlings with a density of less than 1.8g / cm<3>, waste rocks with a density of less than 2.5g / cm<3> and waste rocks with a density with a density more than 2.5g / cm<3> at the same time, thereby preventing low-sulfur low-ash waste rocks from entering a sulfur separating system to a maximum degree and reducing the production pressure of the sulfur separating system.

Description

technical field [0001] The invention relates to a coal preparation method and coal preparation equipment, in particular to a coal and sulfur concentrate separation method and special equipment Background technique [0002] At present, in the commonly used dense-medium coal preparation process, the mixture of raw coal and dense-medium suspension is generally separated by a dense-medium cyclone to directly separate clean coal, medium coal and gangue; Coal curved sieve and medium coal de-medium sieve are used to obtain medium coal, rare medium and fine coal, and the rare medium is recovered through magnetic separation to recover magnetite concentrate, and the tailings pass through cyclone, vibrating screen, fine coal centrifuge, thickener, pressure Coal slime and washed coal are obtained by conventional methods of filter separation; waste rock is passed through the main washing shaker, rewashing shaker, cyclone, boiling coal screen, cyclone, sweeping shaker, concentration, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B7/00B04C5/081B04C5/107B03B5/32B07B1/00B03C1/02
Inventor 何青松杨江清
Owner 重庆南桐矿业有限责任公司选煤厂
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