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Environment-friendly dust fall agent for coal mine

An environmentally friendly, dust-reducing agent technology, applied in other chemical processes, chemical instruments and methods, etc., can solve the problems of difficult to achieve dust-reducing effect, less than ideal dust-reducing effect, etc., achieve rapid wetting of particle surface, stable application effect, Increases the effect of rapid settling by gravity

Inactive Publication Date: 2013-12-18
TAIYUAN RONGYUAN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the face of the actual situation of 6000mg / m3 dust concentration in the fully mechanized coal mining face, it is difficult to achieve a good dust reduction effect only by quickly wetting the coal dust
The dust-reducing agent described in US3900611 is compounded with surfactant and modified polyacrylamide to make a concentrated solution, but the dust-reducing effect is not ideal, and the dilution ratio of the concentrated solution can only reach 1:200~1:750

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] 15 kg of sodium lauryl sulfate, 10 kg of OT-75, 10 kg of isomeric tridecyl alcohol polyoxyethylene ether, 13.5 kg of absolute ethanol, 5 kg of glycerin, and 0.55 kg of ethanolamine phosphate were added to the reaction Stir in the kettle for 1 hour, then slowly add 4 kg of polyvinyl alcohol, stir for 24 hours and discharge.

[0037] Add the above product to the dust suppressant adding device, adjust the metering pump to adjust the ratio of dust suppressant to water to 1:1000, and transport it to the spray system of the fully mechanized mining face through the dust removal water pipe. The test of the spray liquid shows that the tension is 24mN / m. The dust reduction effect is 100~120% higher than that of pure water.

Embodiment 2

[0039] Add 30 kg of sodium dodecylbenzene sulfonate, 20 kg of isomeric tridecyl alcohol polyoxyethylene ether, 20 kg of absolute ethanol, 5 kg of glycerin and 0.6 kg of ethanolamine phosphate into the reaction kettle and stir for 1 hour , then slowly add 5 kilograms of polyvinyl alcohol, and stir for 24 hours to discharge.

[0040] Add the above product to the dust suppressant adding device, adjust the metering pump to adjust the ratio of dust suppressant to water to 1:1000, and transport it to the spray system of the fully mechanized mining face through the dust removal water pipe. The test of the spray liquid shows that the tension is 30mN / m. The dust reduction effect is 80~90% higher than that of pure water.

Embodiment 3

[0042] Add 40 kg of AES, 20 kg of OT-75, 20 kg of absolute ethanol, 6 kg of ethylene glycol, and 0.5 kg of ethanolamine phosphate into the reaction kettle and stir for 1 hour, then slowly add 6 kg of sodium polyacrylate, and stir 24 hours delivery.

[0043] Add the above products to the dust-suppressant adding device, adjust the metering pump to adjust the ratio of dust-suppressant to water to 1:1000, and transport it to the spray system of the fully mechanized mining face through the dust-removal water pipe. The test of the spray liquid shows that the tension is 22mN / m. The dust reduction effect is 100~110% higher than that of pure water.

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Abstract

The invention relates to the field of dust fall agents, in particular to an environment-friendly dust fall agent for a coal mine. The environment-friendly dust fall agent enables water mist on the surfaces of dust particles to quickly wet and permeate the insides of the dust particles, dust particle coagulation is quickened, dust particle sedimentation is quickened, and the dust fall agent is biodegradable. The environment-friendly dust fall agent for the coal mine comprises the following raw materials, by mass ratio, 60-100 parts of surface active agents, 5-30 parts of biodegradable high-molecular polymers, 20-60 parts of solvents, 6-20 parts of antifreezing agents and 0.5-4 parts of metal corrosion inhibitors. The dust fall agent is a concentrated solution, the ratio can reach 1: 1000 to 1: 5000, quick dust fall can be achieved, chloride salt is not contained, the agent is biodegradable after being sprayed, and therefore secondary environment pollution is avoided.

Description

technical field [0001] The invention relates to the field of dust-reducing agents, in particular to an environment-friendly dust-reducing agent for coal mines. Background technique [0002] During mining and tunnel operations, blasting and mechanical operations will produce a large amount of fine dust. Due to poor ventilation, the dust particles cannot be discharged in time, and the concentration of coal powder on the working face seriously exceeds the standard. Coal mine dust affects the safety of mine production, threatens the health of workers and pollutes the environment. It is one of the main disasters in coal mines. After being inhaled, coal dust will accumulate in the respiratory system and cause many diseases, especially particles with a diameter of less than 2.5 microns are extremely harmful to human health, and can cause cancer, deformity and even genetic mutations in severe cases. At present, in the absence of dust prevention measures in the mining face of my cou...

Claims

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Application Information

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IPC IPC(8): C09K3/22
Inventor 王培源
Owner TAIYUAN RONGYUAN TECH CO LTD
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