Bacteria slag type coal dust suppressant and preparation method thereof

A technology of dust suppressant and coal is applied in the field of preparation of starch polyvinyl alcohol type coal dust suppressant, which can solve the problems of antibiotic residues, soil and water pollution, etc.

Inactive Publication Date: 2017-07-07
CHINA UNIV OF MINING & TECH (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Antibiotic residues are rich in organic matter, but there will be some antibiotic residues, and direct accumulation will easily cause soil and water pollution

Method used

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  • Bacteria slag type coal dust suppressant and preparation method thereof
  • Bacteria slag type coal dust suppressant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] When 10% polyvinyl alcohol + 3% starch + 2% penicillin residue + 85% water, the dust suppressant (1) has a moderate viscosity of 345mPa·s; (2) the initial stratification time can reach 135h; (3 ) The cured layer has good film-forming properties and water resistance, and can resist certain environmental changes. The penetration speed of the dust suppressant is 0.24mm.s -1 , the compressive strength is 225KPa, the wind erosion resistance is 0.58%, the compressive strength after freezing and thawing of the solidified layer is 205KPa, and the compressive strength after raining is 216KPa.

Embodiment 2

[0020] When 9% polyvinyl alcohol + 2% starch + 88% water + 1% penicillin fungus residue, the dust suppressant (1) viscosity at this moment is reduced to 220mPa·s; (2) the initial stratification time can reach 149h; ( 3) The cured layer has good film-forming properties and water resistance, and can resist certain environmental changes. The penetration speed of the dust suppressant is 0.19mm.s -1 , the compressive strength is 198KPa, the wind erosion resistance is 0.75%, the compressive strength of the solidified layer is 173KPa after freezing and thawing, and the compressive strength after raining is 186KPa.

Embodiment 3

[0022] When 11% polyvinyl alcohol + 4% starch + 3% penicillin scum + 82% water, the viscosity of the dust suppressant (1) becomes high at this moment, which is 520mPa·s; (2) the initial delamination time is reduced to 79h; ( 3) The cured layer has good film-forming properties and water resistance, and can resist certain environmental changes. The penetration speed of the dust suppressant is 0.15mm.s -1 , the compressive strength is 210KPa, the wind erosion resistance is 0.62%, the compressive strength of the solidified layer is 186KPa after freezing and thawing, and the compressive strength after raining is 190KPa.

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Abstract

The invention relates to a fungus slag type coal dust suppressant and a preparation method thereof. The weight percent of the dust suppressant is: polyvinyl alcohol 9-11%, starch 2-4%, penicillin slag 1-3%, and water 82-88%. After the starch is gelatinized, polyvinyl alcohol, penicillin scum and water are added to carry out a polymerization reaction. The gelatinization temperature of the starch is 35°C, and the gelatinization time is 0.5h; the temperature of the polymerization reaction is 60°C, and the polymerization time is 1.5h. The present invention adds fungus slag-type dust suppressant and utilizes the effective components in it to recycle solid waste and achieve the purpose of energy saving and emission reduction. The dust suppressant can reduce the dust in the process of coal transportation, reduce the loss of coal transportation, and alleviate the pollution of coal particles to the atmospheric environment.

Description

[0001] Technical field: [0002] The invention relates to a preparation method of a starch polyvinyl alcohol type coal dust suppressant added with fungus slag. [0003] Background technique: [0004] Coal is one of the important basic energy sources, accounting for about 70% of China's energy consumption structure. A large number of coal mining, storage and transportation have produced serious coal dust pollution. One of the effective methods to control coal dust pollution is to spray chemical dust suppressant. The current patents on coal chemical dust suppressants include: CN101747866A prepares a coal dust suppressant with lignin, sodium sulfonate, acrylic acid, hydrogen peroxide, calcium chloride, sodium tetraborate and sodium methyl silicate; CN101805590A is modified from A new type of coal dust suppressant with nuclear membrane structure was prepared by using modified cellulose or modified starch, modified nanoparticles, etc.; CN101775267A prepared an environmentally frien...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K3/22
Inventor 刘红缨李亚茜
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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