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Preparation method of water-retention dust-falling agent

A technology of dust suppressant and preparation steps, which is applied in the field of preparation of water-retaining and dust-reducing agents, which can solve the problems that dust is not easy to be infiltrated by dust-reducing agents, and the dust-reducing effect of dust-reducing agents is limited, so as to achieve the effects of improving water-retaining and water-locking performance, increasing water retention, and reducing waste

Inactive Publication Date: 2018-11-13
FOSHAN LINGXIE ENVIRONMENTAL PROTECTION TECH CO LTD
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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

Method used

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  • Preparation method of water-retention dust-falling agent

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Embodiment Construction

[0023] Put 40-50g of corn flour in a conical flask, add 3-5g of α-amylase to the conical flask and add sodium dihydrogen phosphate-disodium hydrogen phosphate buffer solution with a pH value of 7, and set the volume to 100-110mL , then add 8-10mL of sodium hypochlorite solution with a mass fraction of 0.1% to the Erlenmeyer flask, place the Erlenmeyer flask in a shaker, heat it in a water bath to 42-45°C, and oscillate at a speed of 135-140r / min. After reacting for 3 to 4 days, add 10 to 12 mL of sodium hydroxide solution with a mass fraction of 40% to the Erlenmeyer flask to terminate the reaction and obtain oxidized dextrin; place the above oxidized dextrin in an oven and heat up to 60 to 70°C , after drying for 8-9 hours, put it into a three-necked flask with a thermometer and a nitrogen conduit, add 100-110mL of distilled water to the three-necked flask, heat the three-necked flask to 45-50°C, preheat for 10-15min, and add 40-50mL of calcium chloride solution with a mass f...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/22C08F251/00C08F220/06C08F220/56
CPCC08F251/00C09K3/22C08F220/06C08F220/56
Inventor 胡丽春邓博陈帅
Owner FOSHAN LINGXIE ENVIRONMENTAL PROTECTION TECH CO LTD
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