Device and method for preparing injection coal through impurity removal and flotation after meager coal and meager lean coal crushing

A flotation device and a technology for lean and lean coal are applied in the field of devices for crushing lean coal, removing impurities and flotation to obtain blown coal after lean and lean coal, and can solve problems such as dust pollution and achieve pollution reduction, ease of use, and efficiency. high effect

Pending Publication Date: 2022-03-15
SHANXI LUAN ENVIRONMENTAL ENERGY DEV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The technical problem to be solved by the present invention is to optimize the impurity removal process of lean coal and lean coal, improve the recycling efficiency of lean coal and lean coal, and solve the problem of dust pollution in the production process of PCI coal, and provide a A device and method suitable for producing PCI coal

Method used

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  • Device and method for preparing injection coal through impurity removal and flotation after meager coal and meager lean coal crushing
  • Device and method for preparing injection coal through impurity removal and flotation after meager coal and meager lean coal crushing
  • Device and method for preparing injection coal through impurity removal and flotation after meager coal and meager lean coal crushing

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Experimental program
Comparison scheme
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Embodiment 1

[0052] Such as Figure 1 to Figure 6 As shown, the device for crushing lean coal and lean coal and removing impurities and flotation to produce PCI coal in this embodiment includes a crushing and removing device and a flotation device arranged in sequence, and the crushing and removing device includes a moving frame 1 And the shearing and crushing mechanism, impurity removal mechanism and dust suction mechanism arranged on the mobile frame 1;

[0053] The shearing and crushing mechanism includes a cabinet 47 installed on the top of one side of the mobile frame 1, a shearing and crushing assembly arranged in the cabinet 47, and a shearing and crushing assembly arranged on the outer wall of the cabinet 47 and used to drive the shearing and crushing assembly for lean coal and coal. A drive assembly for shearing and crushing lean coal; the top of the cabinet 47 is connected with a material guide cover 48, and the top of the material guide cover 48 is provided with a feed port;

...

Embodiment 2

[0067] The method for producing PCI coal by crushing lean coal and lean coal after removing impurities and flotation, the method includes the following steps:

[0068] Step 1, placing the crushing and impurity removal device and the flotation device side by side, and connecting the discharge port 24 of the crushing and impurity removal device with the feed port of the flotation device;

[0069]During specific implementation, the installation process of the crushing and impurity removal device is: first select the impurity removal screen one 22 and the impurity removal screen two 29 of appropriate size, and the impurity removal screen one 22 and the impurity removal screen two 29 respectively Installed in the impurity removal area one 211 and the impurity removal area two 212 of the open impurity removal box 23, then the filter screen 213 is installed in the cabinet 47, and the rotating rod 44 together with the scraper 45 and the blade 46 are installed in the cabinet 47 and In ...

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Abstract

The invention discloses a device and method for preparing injection coal through impurity removal and flotation after meagre coal and meagre lean coal crushing, the device comprises a crushing and impurity removal device and a flotation device which are arranged in sequence, the crushing and impurity removal device comprises a moving frame, and a shearing crushing mechanism, an impurity removal mechanism and a dust collection mechanism which are arranged on the moving frame; the method comprises the steps that firstly, the crushing and impurity removing device and the flotation device are arranged side by side, and a discharging opening of the crushing and impurity removing device is connected with a feeding opening of the flotation device; 2, carrying out shearing crushing and three-stage deep impurity removal treatment on the meager coal and meager lean coal to be treated by a crushing and impurity removal device; and 3, treating the oversize product and the undersize product to obtain the injection coal. According to the invention, deep impurity removal of meager coal and meager lean coal can be realized, injection coal products with high recovery rate and high quality can be obtained, and the problem that impurities in meager coal and meager lean coal are difficult to efficiently remove at present can be solved, so that more meager coal, meager lean coal and the like can meet the requirements of injection coal, and the consumption of high-quality coal such as anthracite and the like is reduced.

Description

technical field [0001] The invention relates to the technical field of injection coal production, more specifically, the invention relates to a device and a method for producing injection coal by crushing lean coal and lean coal and then removing impurities and flotation. Background technique [0002] Blast furnace injection pulverized coal technology began in my country between the 1950s and 1960s. At that time, the washed anthracite coal of Yangquan Coal Industry Group was used as an industrial test object. It was specially designed according to Anshan Iron and Steel’s demand for blast furnace injection coal products. Coal Washing quality indicators have also followed the series of product standards (anthracite) uniformly formulated by Yangquan Mining Bureau after the test was successful. However, with the limited supply of anthracite and the continuous reduction of raw coal reserves, the market price is gradually rising. The use of cheaper and more abundant long-flame coal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B1/00B03B7/00B03B9/00
CPCB03B1/00B03B7/00B03B9/005
Inventor 孙守靖徐龙华张敏于清泉王伟林薛凯李会玲赵冬李鲲史新章
Owner SHANXI LUAN ENVIRONMENTAL ENERGY DEV
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