Application of graphene with special structure in preparation of coal mine dust suppressant

A special structure, graphene technology, applied in the direction of graphene, other chemical processes, chemical instruments and methods, etc., can solve the problems of high cost of dust suppressant, high production cost, large water consumption, etc., to achieve safe oxidation process, The effect of low cost and low water consumption

Pending Publication Date: 2021-11-30
CCTEG CHINA COAL RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the production cost of single-layer graphene is relatively high, and the cost of the dust suppressant produced by this method is too high, and the practical application is of little significance
Moreover, single-layer graphene is difficult to disperse and cannot be evenly distributed in the dust suppressant, and the dust suppression effect cannot meet expectations
[0005] Due to the addition of a large amount of concentrated sulfuric acid in the preparation process of graphene oxide, it needs to be washed with a large amount of deionized water to remove the acid in the later stage, and in additi

Method used

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  • Application of graphene with special structure in preparation of coal mine dust suppressant
  • Application of graphene with special structure in preparation of coal mine dust suppressant
  • Application of graphene with special structure in preparation of coal mine dust suppressant

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0042] Example 1

[0043] Coal mine ceilings, including:

[0044] Dodecyl benzene sulfonate: 2%;

[0045] Fat alcohol polyoxyethylene ether: 1%;

[0046] Special structure of graphene: 0.1%;

[0047] Aqueous solution: Supply 100%.

[0048] The graphene of the special structure is prepared from the following steps:

[0049] The 9 g of scala graphite was added to a 270 mL concentration of 60% sulfuric acid solution, and stirred at the ice water bath for 30 min, then a small amount plus 9GKMNO 4 The mixture was continued for 30 min under ice water bath, and then slowly warmed to 30 min at 30 min, then slowly added 200 mL of deionized water, and then tapered to 80 ° C for 30 min, then the temperature drops to room temperature, then add a large amount Ion water terminates the reaction, then dripping H 2 O 2 Remove unreacted KMNO 4 , Then wash the insert layer with a large amount of deionized water.

[0050] The resulting insert layer graphite was dispersed in deionized water, and then ...

Example Embodiment

[0053] Example 2

[0054] Coal mine ceilings, including:

[0055] Dose sodium sulfate: 2%;

[0056] Fat alcohol polyoxyethylene ether: 1%;

[0057] Special structure of graphene: 0.1%;

[0058] Aqueous solution: Supply 100%.

[0059] The graphene of the particular structure is prepared from a method comprising the following steps: 9 g of scale graphite is added to a sulfuric acid solution of a concentration of 60%, and stirred under ice water bath for 30 min, then a small amount plus 13.5 GKMNO 4 The mixture was continued for 30 min under ice water bath, and then slowly warmed to 30 min at 30 min, then slowly added 200 mL of deionized water, and then tapered to 80 ° C for 30 min, then the temperature drops to room temperature, then add a large amount Ion water terminates the reaction, then dripping H 2 O 2 Remove unreacted KMNO 4 , Then wash the insert layer with a large amount of deionized water.

[0060] The obtained inserted graphite was dispersed in deionized water at 0.1% by w...

Example Embodiment

[0063] Example 3

[0064] Coal mine ceilings, including:

[0065] Sodium fatty alcohol polyoxyethylene ether sodium sulfate: 1%;

[0066] Fatty acid diethanolamide: 1%;

[0067] Special structure of graphene: 0.2%;

[0068] Aqueous solution: Supply 100%.

[0069] The graphene of the particular structure is prepared from the method comprising the following steps: 9 g of scale graphite is added to a 270 ml concentration of 75% sulfuric acid solution, and stirred under ice water bath for 30 min, then a small amount plus 13.5 GKMNO 4 The mixture was continued for 30 min under ice water bath, and then slowly warmed to 30 min at 30 min, then slowly added 200 mL of deionized water, and then tapered to 80 ° C for 30 min, then the temperature drops to room temperature, then add a large amount Ion water terminates the reaction, then dripping H 2 O 2 Remove unreacted KMNO 4 , Then wash the insert layer with a large amount of deionized water.

[0070] The resulting intermediate graphite was d...

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Abstract

The invention relates to application of graphene with a special structure in preparation of a coal mine dust suppressant. The graphene with a special structure is prepared by the following method: oxidizing and intercalating crystalline flake graphite with sulfuric acid and potassium permanganate, and then performing mechanical exfoliation. Graphene treated by a special method is added into the dust suppressant, and part of the graphene has a structure similar to that of coal dust, so that the graphene can adsorb tiny coal dust and then be settled, and the settling efficiency is improved.

Description

technical field [0001] The invention relates to the field of coal mine dust suppression, in particular to the application of graphene with a special structure in the preparation of coal mine dust suppressant. Background technique [0002] The current dust suppressants used in coal mines are generally chemical dust suppressants, such as nonionic surfactants, anionic surfactants, additives, etc. The human body is non-toxic and harmless, but if inhaled for a long time, the chemical reagents in the body will continue to accumulate, which will have a non-negligible impact on the human body. In addition, dust suppressants are generally composed of one or several stable polymer compounds with relatively stable physical and chemical properties and are difficult to degrade in the environment. Long-term use will have a certain impact on the surrounding environment such as groundwater. Moreover, the general dust suppressant has a certain range of particle settlement for dust, and has ...

Claims

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Application Information

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IPC IPC(8): C09K3/22C01B32/19
CPCC09K3/22C01B32/19
Inventor 张浪姚海飞李欣李伟靳磊徐长富张思睿王耀强李艳川
Owner CCTEG CHINA COAL RES INST
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