Dust settling agent for coal mine and using method thereof

A dust-reducing agent and coal mine technology, applied in chemical instruments and methods, dust prevention, mining equipment, etc., can solve problems such as inability to completely solve dust problems, limited effect, hidden dangers of accidents, etc.

Inactive Publication Date: 2011-02-23
SHANDONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the vast majority of coal dust is difficult to be wetted by water. The use of water-based wet dust suppression technology cannot completely solve the dust problem, and its effect is limited.
In the prior art, the dust conc

Method used

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  • Dust settling agent for coal mine and using method thereof
  • Dust settling agent for coal mine and using method thereof
  • Dust settling agent for coal mine and using method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] The dust suppressant for coal mine mainly includes the following components according to weight percentage: 0.05% octylphenol polyoxyethylene ether, 0.05% lauryl betaine, 99.789% water and 0.111% calcium chloride, and Control the calcium chloride containing 0.01 mole number in every dust lifting agent.

[0048] Such as image 3 Shown, above-mentioned dedusting agent can be applied in coal mine by following steps, it comprises the following steps:

[0049] a. Fully mix 0.05% octylphenol polyoxyethylene ether, 0.05% lauryl betaine, 99.789% water and 0.111% calcium chloride according to weight percentage, and control the content of each liter of mixed solution The calcium chloride of 0.01 moles makes dust suppressant, and dust suppressant is put into water tank 11;

[0050] b. When the working face in the coal mine is working, start the clean water pump 14, and simultaneously start the quantitative pump 12 through the linkage switch 15, and the quantitative pump 12 will ...

Embodiment 2

[0059] The dust suppressant for coal mines is composed of the following components according to weight percentage: 0.05% octylphenol polyoxyethylene ether, 0.05% lauryl betaine, 99.789% water and 0.111% calcium chloride, And it is controlled to contain 0.01 mole of calcium chloride per dust lifting agent.

[0060] Such as image 3 Shown, above-mentioned dedusting agent can be applied in coal mine by following steps, it comprises the following steps:

[0061] a. Fully mix 0.05% octylphenol polyoxyethylene ether, 0.05% lauryl betaine, 99.789% water and 0.111% calcium chloride according to weight percentage, and control the content of each liter of mixed solution Calcium chloride of 0.01 moles makes dust suppressant, and dust suppressant is put into water tank 11;

[0062] b. When the working face in the coal mine is working, start the clean water pump 14, and simultaneously start the quantitative pump 12 through the linkage switch 15, and the quantitative pump 12 will press th...

Embodiment 3

[0067] The difference between embodiment 3 and embodiment 2 is that the weight percent of each component is different, and the dust suppressant for coal mine is composed of the following components according to weight percent: 0.06% octylphenol polyoxyethylene ether, 0.06% Dodecyl betaine, 99.547% of water and 0.333% of calcium chloride, and controlled to contain 0.03 moles of calcium chloride per dust elevating agent.

[0068] Such as image 3 Shown, above-mentioned dedusting agent can be applied in the spray dedusting system of coal mine by following steps, and it comprises the following steps:

[0069] d. Fully mix 0.06% octylphenol polyoxyethylene ether, 0.06% lauryl betaine, 99.84% water and 0.333% calcium chloride according to the weight percentage, and control the content of each liter of mixed solution The calcium chloride of 0.03 moles makes the dust-reducing agent, and puts the dust-reducing agent into the water tank 11;

[0070] e. When the working face in the coa...

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Abstract

The invention discloses a dust settling agent for a coal mine and a using method thereof. 0.04 to 0.06 weight percent of octylphenol polyoxyethylene ether, 0.04 to 0.06 percent of dodecyl betaine, 99.547 to 99.91 percent of water and 0.111 to 0.333 percent of calcium chloride are mixed fully; and the mixture is pressed into a spraying and dust settling system on the working surface of the coal mine for spraying. The octylphenol polyoxyethylene ether, the dodecyl betaine, the water and the calcium chloride are mixed fully, both the octylphenol polyoxyethylene ether and the dodecyl betaine are surface active substances of which each molecule consists of a hydrophilic group and a hydrophobic group, and the hydrophobic group generally consists of a longer organic carbon chain, has a surface molecular property similar to that of coal dust and is easier to adsorb than moisture, so that the dust catching efficiency of water is improved, dust settling efficiency is over 90 percent and dust settling water consumption is saved.

Description

technical field [0001] The invention relates to a dust-reducing agent for removing coal dust in coal mines and a using method thereof, in particular to a dust-reducing agent for coal mines and a using method thereof. Background technique [0002] At present, the dust concentration of fully mechanized mining face can reach 2500 mg / m without dust prevention measures in coal mining face in my country. 3 -3000mg / m 3 , while the dust situation of fully mechanized caving work is more serious than that of general fully mechanized mining face. When the coal shearer is cutting coal, moving frame and coal setting in parallel, the instantaneous original total dust concentration of some coal mines is even as high as 8000mg / m 3 -10000mg / m 3 . Even if ventilation and other measures are taken, the condition of most working faces is still quite bad, and the dust concentration in the downwind direction of the shearer can reach a maximum of 10000mg / m 3 The above has seriously exceeded the...

Claims

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Application Information

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IPC IPC(8): E21F5/06C09K3/22E21F5/02
Inventor 程卫民周刚孙鑫杨鹏聂文
Owner SHANDONG UNIV OF SCI & TECH
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