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Sulfuric acid slag composite explosion suppression material capable of inhibiting coal dust explosion and preparation method and application thereof

A sulfuric acid slag and coal dust technology, applied in dust prevention, mining equipment, earthwork drilling, etc., can solve problems affecting sintering productivity, high water absorption, poor ball formation, etc., achieve excellent explosion suppression effect, expand utilization channels, Realize the effect of resource utilization

Inactive Publication Date: 2020-04-10
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, its poor spheroidization and high water absorption affect the sintering productivity

Method used

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  • Sulfuric acid slag composite explosion suppression material capable of inhibiting coal dust explosion and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A kind of preparation of the sulfuric acid slag composite anti-explosion material of suppressing coal dust explosion, comprises the following steps:

[0043] (1) After stirring 40 parts by weight of sulfuric acid slag powder, 5 parts by weight of coal powder, 3 parts by weight of gypsum, 10 parts by weight of calcium oxide and 2 parts by weight of water, the briquetting is dried, calcined at 1000 ° C for 3 hours, cooled After grinding to 100 mesh, active powder is obtained.

[0044] (2) 40 parts by weight of active powder soaked in 180 parts by weight of calcium hydroxide solution, 1 part by weight of aluminate coupling agent, 28 parts by weight of sodium hexametaphosphate and 1 part by weight of ammonium persulfate as 180 parts by weight of calcium hydroxide solution with a mass concentration of 5%. In the oxidizing agent, after stirring at 50°C for 6 hours, separate the obtained upper layer flocculent turbid liquid and the lower layer residue after completion, and set...

Embodiment 2

[0049] A kind of preparation of the sulfuric acid slag composite anti-explosion material of suppressing coal dust explosion, comprises the following steps:

[0050] (1) After stirring 60 parts by weight of sulfuric acid slag powder, 8 parts by weight of coal powder, 6 parts by weight of gypsum, 14 parts by weight of calcium oxide and 4 parts by weight of water, the briquetting is dried, calcined at 1080 ° C for 2 hours, cooled After grinding to 300 mesh, active powder is obtained.

[0051] (2) Soak 60 parts by weight of active powder in 230 parts by weight of calcium hydroxide solution, 3 parts by weight of aluminate coupling agent, 15 parts by weight of sodium hexametaphosphate and 3 parts by weight of ammonium persulfate as 230 parts by weight of calcium hydroxide solution with a mass concentration of 6%. In the oxidizing agent, after stirring at 50°C for 5 hours, after completion, separate the obtained upper layer flocculent liquid and the lower layer residue, and set aside...

Embodiment 3

[0056] A kind of preparation of the sulfuric acid slag composite anti-explosion material of suppressing coal dust explosion, comprises the following steps:

[0057] (1) After stirring 70 parts by weight of sulfuric acid slag powder, 10 parts by weight of coal powder, 10 parts by weight of gypsum, 20 parts by weight of calcium oxide and 5 parts by weight of water, the briquetting is dried, calcined at 1100 ° C for 2 hours, and cooled After grinding to 80 mesh, active powder is obtained.

[0058] (2) 50 parts by weight of active powder soaked in 200 parts by weight of calcium hydroxide solution, 2 parts by weight of aluminate coupling agent, 20 parts by weight of sodium hexametaphosphate and 2.1 parts by weight of sodium persulfate as 200 parts by weight of calcium hydroxide solution with a mass concentration of 9%. In the oxidizing agent, after stirring at 60°C for 4 hours, separate the obtained upper flocculent turbid liquid from the lower residue and set aside for later use; ...

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Abstract

The invention belongs to the technical field of explosion suppression materials, and particularly relates to a sulfuric acid slag composite explosion suppression material capable of inhibiting coal dust explosion and a preparation method and application of the sulfuric acid slag composite explosion suppression material. The method is as follows: (1) sulfuric acid slag powder, coal powder, gypsum,calcium oxide and water are uniformly mixed, obtained slurry is dried and then calcined, and a calcined product is crushed to obtain active powder; (2) the active powder obtained in the step 1 is placed in a mixed solution formed by a calcium hydroxide solution, an aluminate coupling agent, sodium hexametaphosphate and persulfate for heating and soaking, and after completion, obtained upper-layerflocculent cloud liquid and lower-layer residues are separated; (3) the flocculent cloud liquid is washed; then drying and grinding are carried out to obtain ultrafine powder; and (4) the residues aresubjected to carbonization after steam curing, and then a carbonized product is mixed with ultrafine powder obtained in the step 3. According to, the sulfuric acid slag composite explosion suppression material capable of inhibiting coal dust explosion and the preparation method and application of the sulfuric acid slag composite explosion suppression material, sulfuric acid slag is used as a basic raw material, so that the resource utilization of the sulfuric acid slag is realized; and moreover, the prepared explosion suppression material can be subjected to staged synergistic explosion suppression, and the explosion suppression effect is excellent.

Description

technical field [0001] The invention belongs to the technical field of explosion suppression materials, and in particular relates to a sulfuric acid slag composite explosion suppression material for suppressing coal dust explosion, a preparation method and application thereof. Background technique [0002] The information disclosed in the Background of the Invention is only intended to increase the understanding of the general background of the invention, and is not necessarily to be taken as an acknowledgment or any form of suggestion that the information constitutes the prior art that is already known to those skilled in the art. [0003] Coal dust explosion is one of the major disasters in coal mines. The explosion wave produced by the coal dust explosion can raise the coal dust deposited in the roadway, resulting in continuous explosions, even affecting the entire mine. When coal dust explodes, the explosion temperature can reach 2300-2500°C, the flame propagation speed...

Claims

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Application Information

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IPC IPC(8): E21F5/08
CPCE21F5/08
Inventor 宫晨琛雷建国高新芦令超
Owner UNIV OF JINAN
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