A kind of wetting type dust suppressant for road dust and preparation method thereof

A dust suppressant and road technology, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of road dust wettability without example, the road surface cannot meet the long-term effective dust suppression, affecting the pH of the dust suppressant, etc. Long-lasting moisturizing performance, improved dust suppression efficiency, and superior performance

Active Publication Date: 2022-06-28
ANSTEEL GRP MINING CO LTD
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, water spraying method is mainly used at home and abroad to suppress dust on the road surface. Sprinkling water is simple and convenient, but the evaporation speed is fast and the action time is short. The road surface with a large dust thickness cannot meet the long-term effective dust suppression requirements.
Most of the existing road dust suppressants are used in the field of coal transportation. For example, the patent CN 102295915 B discloses a dust suppressant for the coal surface of the carriage. After spraying, it can form a solidified film on the coal surface. Dust suppressant can be used in mines and urban roads, but because this type of dust suppressant is developed for coal dust, there is no example demonstration of the wettability of road dust; patent CN 102660227 B discloses a road dust suppressant, which consists of 0.1 ~2.0% water-soluble high molecular polymer, 20~50% hygroscopic agent, 1.0~5.0% preservative, 0.5~5.0% penetrating agent and the rest of water are mixed together. High concentration of hygroscopic agent will affect the pH of the dust suppressant, which in turn will affect the viscosity of the dust suppressant during the dissolution process of other materials of the dust suppressant

Method used

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  • A kind of wetting type dust suppressant for road dust and preparation method thereof
  • A kind of wetting type dust suppressant for road dust and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A wetting type dust suppressant is composed of the following components by mass percentage: CaCl 2 : 15%, Span-80: 0.2%, Glycerin: 0.5%, Methylcellulose: 1%, Sodium dodecylbenzenesulfonate: 0.4%, Sodium lactate: 0.5%, Urea: 0.5%, Water: 81.9% .

[0038] Its preparation method is:

[0039] (1) The water is divided into three parts of A of 315g, B of 252g, and C of 252g, A is heated to 50°C, and B and C are heated to 40°C;

[0040] (2) Mix 2g of Span-80, 10g of methylcellulose and 150g of CaCl 2 After mixing evenly, mix with water in part A, keep stirring for 40min at a rotating speed of 100rpm / min, and then cool to room temperature to obtain aqueous solution a;

[0041] (3) 5g sodium lactate, 5g glycerol and 5g urea are mixed with B part water, after insulation stirring 40min under rotating speed 100rpm / min, add 4g sodium dodecylbenzenesulfonate, add C part water again, obtain aqueous solution b;

[0042] (4) Stir the aqueous solution b at a rotational speed of 100 r...

Embodiment 2

[0054] A wetting type dust suppressant is composed of the following components by mass percentage: CaCl 2 : 10%, Span-80: 0.1%, Glycerin: 2%, Xanthan gum: 0.7%, Sodium fatty acid ethyl ester sulfonate: 0.3%, Sodium lactate: 0.2%, Urea: 0.9%, Water: 85.8%.

[0055] Its preparation method is:

[0056] (1) The water is divided into three parts of A of 286g, B of 286g, and C of 286g, A is heated to 60°C, and B and C are heated to 50°C;

[0057](2) Mix 1g of Span-80, 7g of xanthan gum and 100g of CaCl 2 After mixing evenly, mix with the water of part A, keep stirring for 30min at a rotating speed of 300rpm / min, and then cool to room temperature to obtain aqueous solution a;

[0058] (3) 2g sodium lactate, 20g glycerol and 9g urea are mixed with B part water, after insulation stirring 30min under rotating speed 300rpm / min, add 3g fatty acid ethyl ester sulfonate sodium, add C part water again, obtain aqueous solution b;

[0059] (4) Stir the aqueous solution b at a rotational spe...

Embodiment 3

[0062] A wetting type dust suppressant is composed of the following components by mass percentage: CaCl 2 : 5%, Span-80: 0.6%, Glycerin: 1%, Polyacrylamide: 1%, Sodium oleamide: 0.5%: Sodium lactate: 0.2%, Urea: 2%, Water: 89.7%.

[0063] Its preparation method is:

[0064] (1) The water is divided into three parts of A of 280g, B of 308g, and C of 309g, A is heated to 55°C, and B and C are heated to 45°C;

[0065] (2) Mix 6g of Span-80, 10g of polyacrylamide and 50g of CaCl 2 After mixing evenly, mix with the water of part A, keep stirring for 35min at a rotating speed of 200rpm / min, and then cool to room temperature to obtain aqueous solution a;

[0066] (3) 2g sodium lactate, 10g glycerol and 20g urea are mixed with B part water, after insulation stirring 35min under rotating speed 200rpm / min, add the sodium oleamide of 5g, then add C part water, obtain aqueous solution b;

[0067] (4) Stir the aqueous solution b at a rotational speed of 130 rpm / min, add the aqueous solu...

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Abstract

The purpose of the present invention is to research and develop the composite road dust wetting material which is convenient to use, has a long effective time and low cost, and provides a wetting dust suppressant for road dust and its preparation method, which belongs to road dust Dust control field. In the wetting dust suppressant of the present invention, the mass percentage of each raw material component is: sodium lactate: 0.1-2%, Span-80: 0.1-6%, glycerin: 0.1%-3%, binder: 0.1% ~5%, urea: 0.5~5%, CaCl 2 : 1-20%, surfactant: 0.1-1%, water: balance. The wetting type dust suppressant of the present invention uses humectants, moisture absorbents, surfactants and binders in combination, which not only keeps the road surface at a certain water content and ensures road dust suppression effects, but also has strong material strength and improves effect of dust suppressants.

Description

technical field [0001] The invention belongs to the field of road dust control, in particular to a wetting type dust suppressant for road dust and a preparation method thereof. Background technique [0002] The pavements of the open pit mines are all simple pavements made of gravel or soil, and there is a large amount of fine dust on the surface. The interaction force between these dusts is very weak. . The high-concentration dust raised by automobiles not only endangers workers' health and driving safety, but also causes huge losses to the economy of mines due to the presence of high-concentration dust that increases the wear and tear of mining machinery and fuel consumption. Therefore, taking measures to control road dust is a problem that every mine must face. [0003] At present, spraying water method is mainly used at home and abroad to suppress road dust. Watering is simple and convenient, but the evaporation rate is fast and the action time is short. However, most ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K3/22
CPCC09K3/22
Inventor 徐连生孙健许灏高江赵虹崔兆杰崔媚华杜冰峰
Owner ANSTEEL GRP MINING CO LTD
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