Dust suppressant for mineral powder and preparation method of dust suppressant

A technology of dust suppressant and mineral powder, which is applied in the field of copolymerized blended polymer hydrosol dust suppressant and its preparation, can solve the problem that the dust suppression efficiency needs to be improved, and can increase the bonding probability and consolidation effect, and improve the resistance to dust. Wind erosion, small particle size effect

Inactive Publication Date: 2018-12-04
加翎加(天津)环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The parts by mass are in grams, 10g of acrylic acid and 6g of methacrylic acid are used as ionic monomers, 5g of butyl acrylate and 2g of hydroxyethyl acrylate are used as nonionic monomers, and they are uniformly mixed as mixed monomers for subsequent use. Add 100g of distilled water to the reactor equipped with a stirrer, thermometer, dropping funnel and nitrogen conduit, replace with nitrogen for 30 minutes under stirring, raise the temperature of the water bath to 78°C, and continuously add the above-mentioned mixed monomer dropwise, and the dropwise addition is completed in 3.0 hours . Meanwhile, 8 g of ammonium persulfate aqueous solution with a mass concentration of 5% was added dropwise at the same time (time synchronization). The temperature of the system was raised to 88°C and kept for 1.5 hours. The system was lowered to 53°C, the pH value of the reaction system was adjusted to 5.5 with 5.0% sodium hydroxide, and 3.0 g of silica sol was added dropwise within...

Embodiment 2

[0040] The implementation steps are the same as in Example 1, except that the amount of ionic monomer acrylic acid is reduced from 10 g to 9 g; the amount of silica sol is increased to 4.0 g; the dropping temperature of silica sol is 50°C.

[0041] The performance evaluation method is the same as in Example 1.

Embodiment 3

[0043] The parts by mass are in grams, 14g of acrylic acid and 2g of methacrylic acid are used as ionic monomers, 3g of styrene and 4g of hydroxypropyl acrylate are used as nonionic monomers, and they are mixed uniformly and used as mixed monomers for subsequent use. Add 100g of distilled water to the reactor equipped with a stirrer, thermometer, dropping funnel and nitrogen conduit, replace with nitrogen for 30 minutes under stirring, raise the temperature of the water bath to 82°C, and continuously add the aforementioned mixed monomers dropwise within 3.0 hours. complete. Meanwhile, 10 g mass concentration of 5% potassium persulfate aqueous solution was added dropwise at the same time. The temperature of the system was raised to 88°C and kept for 1.5 hours. The system was lowered to 50°C, the pH value of the reaction system was adjusted to 5.2 with 5.0% sodium hydroxide, and 4.0 g of silica sol was added dropwise within 1.5 hours. Cool the system to room temperature, adjus...

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PUM

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Abstract

The invention relates to a dust suppressant for mineral powder and a preparation method of the dust suppressant. The dust suppressant is obtained by preparing a polymer hydrosol through a copolymerization technique by using an ionic monomer and a nonionic monomer as raw materials, and performing mixing on the polymer hydrosol and a silica sol. According to the dust suppressant provided by the invention, the polymer hydrosol has a low particle size and better bonding ability to the mineral powder; and the silica sol improves cohesive force of the organic polymer, and the shell layer formed by the silica sol has better weathering resistance.

Description

technical field [0001] The invention relates to a mineral powder dust suppressant in the field of mineral powder dust control, in particular to a copolymerized blend polymer hydrosol dust suppressant and a preparation method thereof. Background technique [0002] All kinds of pollution caused by ore crushing and mineral powder storage yards seriously threaten the safety of the atmosphere, water and human body. The inhalable particulate matter PM10 and fine particulate matter PM2.5 in the mineral powder dust are easy to enrich heavy metal ions, organic oxides, bacteria and viruses. It is extremely harmful to the human body. Therefore, it can suppress ore powder dust in the process of ore crushing, transportation and stacking, and improve the air quality of the working environment. [0003] Starch, cellulose and their deep-processing products are natural polymer compounds with good safety, but their water resistance needs to be improved. EVA and PVA are synthetic polymer com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/22
CPCC09K3/22
Inventor 王娟
Owner 加翎加(天津)环境科技有限公司
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