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Coal slime solidifying and upgrading process and device thereof

A process device and coal slime technology, which is applied in the field of coal slime solidification and upgrading technology and its device, can solve problems such as difficult application in actual production

Inactive Publication Date: 2021-05-18
刘明锐
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Coal slime or briquette, in the case that the upgrading process and equipment can not effectively solve the engineering application, especially the upgrading process and equipment, it is still difficult to apply to actual production

Method used

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  • Coal slime solidifying and upgrading process and device thereof
  • Coal slime solidifying and upgrading process and device thereof
  • Coal slime solidifying and upgrading process and device thereof

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Embodiment 1

[0040] see Figure 1-6 , the present invention provides a technical solution:

[0041] A coal slime solidification and upgrading process and device thereof, comprising the following steps:

[0042] Step 1: Convey the slime cake to the single-shaft screw through the scraper machine for stirring, and at the same time add additives and sulfur-fixing agents, stir and knead the slime and additives evenly to ensure that the additives fully react with the moisture in the slime;

[0043] Step 2: The coal slime after mixing the additives is formed in the extruder, and extruded into a cylindrical shape of φ25-40mm or a plum blossom shape;

[0044] Step 3: The formed coal slime is transported to the italic radiation upgrading furnace for dehydration at 90-150°C, its water content can be reduced from 35% to 5%, its calorific value can be increased by 1500-2000kcal / kg, and its strength It can be increased from 100N to more than 1000N.

[0045] The italic radiation upgrading furnace includ...

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Abstract

The invention relates to the technical field of coal slime treatment, in particular to a coal slime solidifying and upgrading process and a device thereof. The process comprises the steps that coal slime cakes are conveyed to a single-shaft spiral stirrer through a scraper machine to be stirred, and the composition of coal slime is improved by adding a certain amount of dehydration auxiliaries and sulfur-fixing agents; the coal slime is formed in the extruding machine and is extruded and molded into a cylinder or a plum blossom shape; molded coal slime is conveyed to the oblique radiation upgrading furnace and dehydrated at 90-150 DEG C, the calorific value can be increased by 1500-2000 kcal / kg, the strength can be increased from 100 N to 1000 N or above, meanwhile, due to the fact that the sulfur-fixing agent is added, SO2 emission in the coal slime is greatly reduced, and the coal slime can be recycled. The inclined radiation upgrading furnace in the coal slime solidification upgrading process comprises a material distribution trolley, a plurality of bin bodies, a heat conduction plate internally provided with a plurality of heat conduction pipes, four discharging openings on each single bin body, and a discharging belt. The coal slime solidifying and upgrading process provided by the invention has the advantages of low cost, capability of remarkably improving the coal slime quality, low dust content, high thermal efficiency and strong feasibility.

Description

technical field [0001] The invention relates to the technical field of coal slime treatment, in particular to a coal slime solidification and upgrading process and a device thereof. Background technique [0002] Coal slime is a by-product of the coal preparation plant, with a particle size of less than 0.5mm, a moisture content of more than 30%, and an ash content of about 30-40%. It is in the shape of a sticky mud cake. Due to its high moisture content, high ash content, high sulfur content, and low calorific value (calorific value 2000-4000 kcal), the economic value is low, and the strong mobility makes it difficult to load, unload and transport, and the storage occupies a large area. At the same time, dust and water pollution It is more serious, and there is a lack of furnace types that can apply coal slime, which is difficult for users to use and the comprehensive value is low. [0003] In 2019, my country's raw coal output was 3.85 billion tons, and the washing rate wa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L5/04C10L5/10C10L5/24C10L9/02C10L9/10C10L10/02F26B1/00F26B3/28F26B9/06F26B23/10F26B25/00
CPCC10L5/04C10L5/10C10L5/24C10L9/02C10L9/10C10L10/02C10L2290/08F26B1/00F26B3/28F26B9/06F26B23/10F26B25/002
Inventor 刘明锐
Owner 刘明锐
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