Pre-screening device for selected feed coal of coking coal

A screening device and technology for coking coal, which are applied in the fields of sieving, solid separation, chemical instruments and methods, etc., can solve the problems of inability to screen large-particle coal after secondary treatment, screen blockage, low screening efficiency, etc. To achieve the effect of stable up and down vibration, avoid clogging of screen holes, and improve screening efficiency

Pending Publication Date: 2022-02-01
刘思思
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention proposes a coking coal pre-screening device for selecting raw coal, which solves the problem that the existing coking coal screening efficiency is low, the screen is easily blocked, and the screened large-grained coal cannot be subjected to secondary screening. The problem of sub-handling sieving

Method used

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  • Pre-screening device for selected feed coal of coking coal
  • Pre-screening device for selected feed coal of coking coal
  • Pre-screening device for selected feed coal of coking coal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] refer to figure 1 , image 3 and Figure 5 , a coking coal pre-screening device for selecting raw coal, comprising a screening box 1 with an open top, and a limiting groove 102 and a first discharge port 1010 are respectively set on both sides of the screening box 1, and the screening box 1 A sieve plate 101 is movable inside, and the sieve plate 101 is inclined, and the section of the sieve plate 101 is arc-shaped. The ends respectively pass through the limiting groove 102 and the first discharge port 1010, and a plurality of spring columns 1012 with the same structure are fixedly connected between the bottom end of the sieve plate 101 and the inner wall of the bottom end of the screening box 1. The coking coal is put into the screening box 1, and it is effectively filtered through the sieve plate 101 inside the screening box 1, and then the unscreened large-grained coal lumps are passed through the first discharge port 1010 through the inclined sieve plate 101 expo...

Embodiment 2

[0044] In this embodiment, a return box 2 is added on the basis of Example 1 to recover the unbroken and screened large coal lumps, and then import them into the screening box 1 for secondary treatment. figure 1 and Figure 5 , a coking coal pre-screening device for selecting raw coal, further comprising a return box 2, the return box 2 is fixedly connected to the screening box 1, and a material guide port is opened on the side of the return box 2 close to the screening box 1 203 and the second discharge port 205, the material guide port 203 is located above the second discharge port 205, and the second discharge port 205 communicates with the first discharge port 1010, so that the unbroken and screened large coal lumps It can enter the inside of the return box 2 through the first material outlet 1010 and the second material outlet 205 .

[0045] refer to Figure 4-6 , two symmetrically distributed drive rollers 206 are rotated between the inner walls on both sides of the re...

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PUM

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Abstract

The invention discloses a pre-screening device for selected feed coal of coking coal, and relates to the field of coal mining. The invention aims to overcome the problems that existing coking coal screening efficiency is low, a screen mesh is easy to block, and large-particle coal briquettes after screening cannot be subjected to secondary treatment and screening. According to a technical scheme in the invention, the pre-screening device comprises a screening box with an open top end, a limiting groove and a first discharging opening are formed in the two sides of the screening box correspondingly, a screening plate is movably installed in the screening box, the two ends of the screening plate penetrate through the limiting groove and the first discharging opening correspondingly, and a plurality of spring columns of the same structure are arranged between and fixedly connected with the bottom end of the screening plate and the inner wall of the bottom end of the screening box. According to the device, coking coal can be crushed and screened under a non-stop condition, screening holes are prevented from being blocked through vertical vibration of the screening plate, and large-particle coal briquettes which are not completely crushed can be subjected to secondary treatment, so the screening efficiency of the coking coal is effectively improved.

Description

technical field [0001] The invention relates to the field of coal mining, in particular to a pre-screening device for coking coal into selected raw coal. Background technique [0002] Coking coal is a kind of bituminous coal, which usually has a certain degree of cohesiveness and can be coked under the coking conditions of a chamber coke oven. The raw coal used to produce coke of a certain quality is collectively referred to as coking coal. According to my country's coal classification standards, lean coal, lean coal, coking coal, fat coal, 1 / 3 coking coal, gas fat coal, gas coal, and 1 / 2 medium sticky coal in bituminous coal belong to coking coal. As the name suggests, coking coal is mainly used for coke, and is usually divided into metallurgical coke, gasification coke and calcium carbide coke according to its use. The production of coking coal is directly related to heavy industry sectors such as metallurgy and coal chemical industry, as well as some industries such as e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B02C4/08B02C4/42B02C23/08B07B1/28B07B1/42B07B1/46
CPCB02C4/08B02C4/42B02C23/08B07B1/28B07B1/42B07B1/46
Inventor 刘思思
Owner 刘思思
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