Mineral powder suppressant and preparing method thereof

A technology of mineral powder and dust suppressant, which is applied in the field of polymer hydrosol dust suppressant and its preparation, can solve the problems of less than 30% dust suppression efficiency, the need to improve the dust suppression efficiency, the difficulty of wetting of fine particles, and the like. Adhesion probability and consolidation effect, good environmental safety, effect of reducing adverse effects

Inactive Publication Date: 2016-10-12
加翎加(天津)环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003]Sprinkling water is the most commonly used dust suppression method, which is simple and easy to implement. However, due to the high surface tension of water, fine particles are not easy to wet, and the dust suppression efficiency is less than 30%. low resource utilization
CN104693345 discloses a polymer dispersion suitable for urban road dust suppression. Although it is prepared by soap-free emulsion copolymerization technology, the safety of the product is improved, but it still belongs to the category of polymer emulsion, and the dust suppression efficiency needs to be improved

Method used

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  • Mineral powder suppressant and preparing method thereof
  • Mineral powder suppressant and preparing method thereof
  • Mineral powder suppressant and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The parts by mass are calculated in grams. 10g of acrylic acid is used as an ionic monomer, 15g of butyl acrylate and 5g of hydroxyethyl acrylate are used as a nonionic monomer, and they are uniformly mixed as a raw material solution for later use. Add 100g of distilled water to a reactor equipped with a stirrer, a thermometer, a dropping funnel and a nitrogen conduit, replace with nitrogen for 40 minutes with the help of stirring, raise the temperature of the water bath to 80°C, and continuously add the aforementioned raw material mixture dropwise to control the progress of dropping , The dropwise addition was completed in 3.0 hours. Meanwhile, 8 g of ammonium persulfate aqueous solution with a mass concentration of 5% was added dropwise (time synchronization). The temperature of the system was raised to 90°C and kept for 1.5 hours. The system is lowered to room temperature, and the pH value of the above reaction system is adjusted to 7.5 with sodium hydroxide with a ...

Embodiment 2

[0037] The implementation steps are the same as in Example 1, except that: as an ionic monomer, 10 g of acrylic acid is replaced by 8 g of methacrylic acid and 20 g of sodium vinylsulfonate aqueous solution (10%); the polymerization reaction temperature is 85° C.

[0038] The performance evaluation method is the same as in Example 1.

Embodiment 3

[0040] The parts by mass are calculated in grams, 10g of acrylic acid is used as an ionic monomer, 5g of butyl acrylate, 8g of styrene and 7g of hydroxypropyl acrylate are used as a nonionic monomer, and they are uniformly mixed as a raw material solution for later use. Add 100g of distilled water to a reactor equipped with a stirrer, a thermometer, a dropping funnel and a nitrogen conduit, replace with nitrogen for 40 minutes with the help of stirring, raise the temperature of the water bath to 80°C, and continuously add the aforementioned raw material mixture dropwise to control the progress of dropping , the dropwise addition was completed within 3.0 hours. Meanwhile, 10 g of a mass concentration of 5% potassium persulfate aqueous solution was added dropwise at the same time. The temperature of the system was raised to 90°C and kept for 1.5 hours. The system was cooled down to room temperature, and the pH value of the above reaction system was adjusted to 6.8 with 5.0% sod...

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Abstract

The invention relates to a mineral powder suppressant and a preparing method thereof. According to the suppressant, ionic monomers and nonionic monomers serve as raw materials, and polymer hydrosol is prepared through the copolymerization technology with a high dosage of ionic monomers. The polymer hydrosol is in a fine disperse state with the particle size being lower than 100 nm. The specific surface area is remarkably increased, the bonding probability and consolidation effect of the suppressant and dust particles are improved, and the dust suppression efficiency can be easily improved.

Description

technical field [0001] The invention relates to a water-based polymer dust suppressant in the field of mineral powder dust control, in particular to a polymer hydrosol dust suppressant and a preparation method thereof. Background technique [0002] The scale of the city continues to expand, the total economic output continues to increase, and the problem of ambient air quality is becoming increasingly prominent. All kinds of pollution caused by mining, ore processing, mineral transportation and mineral storage yards seriously threaten the safety of the atmosphere, water body and human body. As one of the dust of mineral powder, inhalable particulate matter PM10 and fine particulate matter PM2.5 are easy to enrich heavy metal ions, Organic oxides, bacteria and viruses are extremely harmful to the human body. Therefore, it is imperative to suppress the dust of mineral powders in the process of mining, processing, transportation and stacking, and improve the ambient air qualit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/18C08F228/02C08F220/06C08F220/28C08F212/08C09K3/22
CPCC08F220/06C08F220/18C08F220/1804C08F228/02C09K3/22C08F220/281C08F212/08
Inventor 王娟
Owner 加翎加(天津)环境科技有限公司
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