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Molasses-based explosion-proof dust suppressant and preparation method thereof

A dust suppressant, molasses-based technology is applied in the field of molasses-based explosion-proof dust suppressant and its preparation, which can solve the problems of unfavorable large-scale application, no research on the dust suppressant, single function of the dust suppressant, etc., and achieves significant cohesion and cohesion. effect, excellent anti-explosion effect, good effect of evaporation resistance and water retention

Inactive Publication Date: 2021-09-28
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Chemical dust suppressants have a better effect on coal dust suppression. However, traditional dust suppressants have a single function, and some hygroscopic inorganic salt additives contained in them are corrosive to a certain extent, which is not conducive to their large-scale application in underground mines.
However, there is no research on dust suppressants with dual functions of dust suppression and explosion suppression.

Method used

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  • Molasses-based explosion-proof dust suppressant and preparation method thereof
  • Molasses-based explosion-proof dust suppressant and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0027] A molasses-based anti-explosion and dust suppression agent, including the following raw materials in mass percentage: molasses 15%, non-ionic surfactant 5‰, high-power water-absorbent resin (SAP) 3%, the rest is water and a small amount of pH neutralizer Ca(OH) 2 .

[0028] The preparation method comprises the following steps:

[0029] (1) Dissolve CaO and water at a ratio of 1:1000 in the dissolution tank to obtain Ca(OH) 2 solution.

[0030] (2) First take an appropriate amount of Ca(OH) prepared by CaO 2 Put the solution in a stirrer; after that, take molasses with a mass fraction of 15% in the stirrer, place the stirrer in a water bath heater, keep the temperature of the heater above 80°C, and test the pH value after stirring evenly.

[0031] (3) Weigh the SAP with a mass fraction of 3% in proportion and put it into the stirrer and stir evenly, then slowly add a certain amount of water, stir while entering the water, and stop the water entry when the mixed solut...

Embodiment 2

[0034] A molasses-based anti-explosion and dust suppression agent comprises the following raw materials in mass percentage: 15% of molasses, 1% of non-ionic surfactant, 1% of high-power water-absorbent resin (SAP), and the rest is water and a small amount of pH neutralizer Ca (OH) 2 .

[0035] The preparation method comprises the following steps

[0036] (1) Dissolve CaO and water at a ratio of 1:1000 in the dissolution tank to obtain Ca(OH) 2 solution.

[0037] (2) First take an appropriate amount of Ca(OH) prepared by CaO 2 Put the solution in a stirrer; after that, take molasses with a mass fraction of 15% in the stirrer, place the stirrer in a water bath heater, keep the temperature of the heater above 80°C, and test the pH value after stirring evenly.

[0038] (3) Weigh the SAP with a mass fraction of 5% in proportion and put it into a stirrer and stir evenly, then slowly add a certain amount of water, stir while entering the water, and stop the water entry when the m...

Embodiment 3

[0040] Embodiment 3 A molasses-based explosion-proof and dust-suppressant, comprising the following raw materials in mass percentage: 30% of molasses, 5% of non-ionic surfactant, 5% of high-power water-absorbing resin (SAP), and the rest are water and a small amount of PH Neutralizer Ca(OH) 2 .

[0041] The preparation method comprises the following steps

[0042] (1) Dissolve CaO and water at a ratio of 1:1000 in the dissolution tank to obtain Ca(OH) 2 solution.

[0043] (2) First take an appropriate amount of Ca(OH) prepared by CaO 2 Put the solution in a stirrer; after that, take 30% molasses in the stirrer, place the stirrer in a water bath heater, keep the temperature of the heater above 80°C, and test the pH value after stirring evenly.

[0044] (3) Weigh the SAP with a mass fraction of 5% in proportion and put it into a stirrer and stir evenly, then slowly add a certain amount of water, stir while entering the water, and stop the water entry when the mixed solution ...

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Abstract

The invention relates to an explosion-proof dust suppressant for coal dust and a preparation method thereof. The dust suppressant is prepared from the following raw materials in percentage by mass: 10 to 30 percent of molasses, 0.1 to 0.5 percent of a nonionic surfactant, and 5 to 10 percent of starch-based super absorbent resin (SAP), with the balance being water and a trace pH neutralizer Ca(OH)2. More than 99.5% of the components of the dust suppressant are environment-friendly degradable materials,and the molasses is a byproduct in the sugar industry and is a main material of the dust suppressant, so the dust suppressant has the characteristics of low price, environment friendliness and degradability. The dust suppressant has the functions of wetting, bonding, moisturizing and explosion suppression on coal dust. On-site actual measurement shows that the inhibition rate of the dust suppressant on deposited coal dust in an underground return airway is not lower than 62.86% within three days; and the inhibition rates of the dust suppressant on the explosion indexes of sub-bituminous coal, bituminous coal and anthracite coal dust are 57.45%, 51.47% and 76.98% respectively.

Description

technical field [0001] The invention relates to the technical field of dust suppressants, in particular to a molasses-based explosion-proof dust suppressant and a preparation method thereof. Background technique [0002] A large amount of coal dust is produced during the underground operation of coal mines, which has an important impact on the occupational safety and health of underground workers. Coal dust deposited underground is prone to secondary flying under the disturbance of personnel, vehicles and wind flow, which has an impact on personnel and the environment; in addition, coal dust deposited underground is easily destroyed by shock waves in accidents such as roof caving, coal and gas outburst, etc. When it is hit, it reaches the concentration of coal dust explosion, which seriously affects the safe production of mines and the safety of workers' lives. Therefore, it is of great significance to study the anti-explosion and dust suppression agents used in underground...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/22E21F5/06
CPCC09K3/22E21F5/06
Inventor 刘建国徐晶格陶国银金龙哲欧盛南汪澍
Owner UNIV OF SCI & TECH BEIJING
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