Novel foam dedusting agent for coal mine

Abstract

The invention discloses a novel foam dedusting agent for a coal mine. The novel foam dedusting agent comprises, by weight, 0.5%-0.7% of foaming agent, 0.04%-0.06% of foam stabilizer, 0.4%-0.5% of wetting agent and 98.74%-99.06% of water. Modified alkyl glycoside, carboxymethylcellulose, alkylphenol ethoxylates and the water are sufficiently mixed; then, the mixed liquor is poured into a mine foam dedusting foam maker to form foams; the foams are conveyed to a dust source to cover the dust source, so that dust produced by the dust source is caught and settles, and finally good underground work environments are guaranteed. A hydrophobic grouping (lipophilic group) of wetting agent molecules adsorbed on the surface layer of the water makes contact with the coal dust first and is composed of organic carbon chains, the molecular characteristics of the hydrophobic grouping are similar to the molecular characteristics of the surface of the coal dust, the hydrophobic grouping can adsorb the coal dust more easily than water molecules, and therefore the dust catching efficiency of the foams is improved, the dust settling rate exceeds 95%, and dust settling efficiency is improved.

Description

technical field [0001] The invention relates to a novel foam dedusting agent used in coal mines. Background technique [0002] Coal is my country's main energy source, accounting for about 70% of my country's primary energy production and consumption structure. Mineral dust is one of the main disasters in coal mine production. In the process of coal production, almost all operations such as drilling, blasting, tunneling, mining, coal dropping, transportation, transfer, support, and shifting can generate dust, especially in recent years with the improvement of mining mechanization, underground operating points The dust concentration in the air has also reached a very high level. For example: the dust concentration of the fully mechanized mining face can reach 2500mg / m 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 settin...

AI Technical Summary

Problems solved by technology

In addition, according to field measurements, without any dust prevention measures, the dust concentration of fully mechanized excavation face can reach 2000mg / m 3 -3000mg / m 3 , and some mechanized excavation faces are even as high as 6000mg / m 3 Left and right, the high concentration of dust poses a serious threat to the health of workers and the service life of underground equipment

[0003] In order to reduce the dust concentration of the working face, reduce the harm of dust to workers and equipment, and avoid dust explosion accidents, the dust removal measures adopted by most coal mines at home and abroad mainly include coal seam water injection, spray dust reduction, dust collector dust removal, ventilation dust removal and chemical dust suppression. and other measures, but these measures can only reduce the dust concentration to a certain extent, and the effect is not ideal. The problem of high-concentration dust in coal mines is still serious. It can be seen that the existing technology needs further improvement and development

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