Preparation method of water-retention dust-falling agent

Abstract

The invention relates to the technical field of preparation of dust-falling agents and in particular relates to a preparation method of a water-retention dust-falling agent. According to the preparation method, corn starch is subjected to enzymolysis and then is subjected to grafted copolymerization with an acrylic monomer and acrylamide, so that oxidized dextrin has extremely good water absorption and expansion performance; hydrophilic groups including hydroxyl and the like, which are exposed by the corn oxidized dextrin, are good for water retention after water is absorbed, and a condition that excessive water is absorbed and then is leaked is avoided; calcium chloride is doped into the oxidized dextrin so that the water retention amount of the oxidized dextrin can be improved; an endonuclease effect of alpha-amylase is utilized to change the polymerization degree of linear side chains of amylose and amylopectin, so that the viscosity and concentration of the dust-falling agent can be controlled through water dilution; ammonium bicarbonate is added so that a solution surface of the dust-falling agent is foamed; after the surface area of the solution surface is enlarged, the wetting and adsorption performance on dust in the air is improved; meanwhile, protein isolate also has certain oil absorption performance and the absorption rate on oily dust can be improved, so that the dust-falling agent has a wide application prospect.

Description

technical field [0001] The invention relates to the technical field of dust-reducing agent preparation, in particular to a method for preparing a water-retaining and dust-reducing agent. Background technique [0002] In the process of coal production, there will be a large amount of dust particles in the coal mining face and the tunneling face. When the dust suspended in the air reaches a certain concentration, dust explosion accidents are likely to occur, which will endanger the safety of coal mine production. It also causes miners who are exposed to dust to suffer from pneumoconiosis, which has no cure at present, and many front-line workers suffer from lifelong illness, which greatly affects the health of miners. Therefore, mine dust suppression is an important issue to ensure safe production in mining. [0003] In order to reduce the dust concentration in the workplace, various enterprises have adopted various methods. The methods currently used mainly include: (1) Wet...

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Problems solved by technology

[0007] The main technical problem to be solved by the present invention is that at present most of the dedusting agents use water as a solvent, and the water evaporates quickly. To achieve the purpose of controlling dust, continuous watering is required, and part of the dust is not easily infiltrated by the dedusting agent. The defect of limited effect provides a kind of preparation method of water-retaining and dust-reducing agent

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