Steam coal production technology and homogeneous equipment thereof

Abstract

The invention discloses a steam coal production technology and homogeneous equipment thereof. The steam coal production technology is a simplified steam coal sorting technology. A technological systemis simplified, the sorting precision is high, the purpose of high-density gangue disposal is realized through low-density suspension liquid, the reduction of coal slime is achieved, cleaning and washing are realized, and the influence of the coal slime on the environment is alleviated. When the homogeneous equipment sieves, sieving rollers rotate to enable smashing blocks to preliminarily smash materials, longer bottom edges are in contact extrusion with the materials, the smashing effect is good, and the materials fall down from the bottom end of a smashing box. A material-cutting part and adriving pneumatic cylinder are designed, rectangular plates can be driven to slide back and forth in rectangular grooves, the distance between the two rectangular plates is convenient to adjust, theunloading amount is adjusted, and blocking is avoided; and meanwhile, the homogeneous equipment is provided with buffering parts, the buffering effect is ensured, buffering sleeving rods cannot be separated from buffering sleeves, during vibration, up and down shaking of a vibration box can be ensured, and scattering of the materials cannot be caused.

Description

technical field [0001] The invention relates to the field of steam coal production, in particular to a steam coal production process and homogenizing equipment thereof. Background technique [0002] The resource conditions of "rich coal, poor oil, and little gas" make coal always occupy a dominant position in my country's primary energy production and consumption structure. At present, more than 80% of the coal produced in my country is used for combustion, that is, as power coal, which is used for power generation, industrial kilns, and civil domestic fuel. In recent years, as the environmental protection department requires that the calorific value of power coal is getting higher and higher, some provinces and cities have proposed coal limit requirements, making users put forward the demand for reducing ash and water for power coal. With the improvement of coal mining mechanization, the ash content of raw coal gradually increases, the content of gangue increases, the qual...

AI Technical Summary

Problems solved by technology

The process consists of two sets of dense medium systems, equipped with two sets of density control systems. It is necessary to prepare two kinds of suspensions with different densities. The process system is relatively complicated; In the dense-medium shallow tank system, the increase of coal slime content and viscosity will affect the separation accuracy; and it is difficult to prepare a suspension with a density of 1.8kg/l in the dense-medium shallow tank system, resulting in the loss of clean coal during actual separation. Affect the sorting effect

A small number of steam coal preparation plants adopt raw coal classification and non-pressurized three-product dense medium cyclone separation process. The system has three de-mediation and dehydration systems for clean coal, medium coal and gangue, and the process is relatively complicated.

The current steam coal preparation process has the problem of large amount of slime. Even if powder removal

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