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Dust suppressant for suppressing mineral powder and bare ground dust and preparation method thereof

A dust suppressant, ground technology, applied in chemical instruments and methods, other chemical processes, etc., can solve problems such as non-renewable resources, and achieve the effects of low price, not easy to stratify, and good anti-wind erosion and dust suppression effect.

Inactive Publication Date: 2019-04-19
北京首创大气环境科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The use of chemical binders with similar properties can also play a role in dust suppression, but most of the dust suppressants currently used are products of fossil raw materials, which are non-renewable resources

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0021] The present invention also provides a method for preparing a dust suppressant for inhibiting mineral powder and exposed ground dust, comprising the following steps:

[0022] A. Mix 5-45 parts by weight of a gel-forming agent and 5-55 parts by weight of auxiliary materials, and add a food-grade preservative of 2-18‰ at the same time to obtain a dust-suppressing powder, wherein the gel-forming agent includes Tian One or more of cyanine gum, carboxymethyl cellulose, polyacrylamide, latex powder, maltodextrin, guar gum, and xanthan gum, and the auxiliary material is corn pregelatinized starch;

[0023] B. Mix the dust-suppressing powder with water evenly through a colloid mill, wherein the mass ratio of the dust-suppressing powder and water is 1: (30-150), and stir for at least 40 minutes to obtain a dust-suppressing agent, and use liquid conveying equipment Transfer the prepared dust suppressant solution to the night storage tank for use.

[0024] Preferably, the proporti...

Embodiment 1

[0040] Mix 5 parts by weight of sapphire gum and 55 parts by weight of corn pregelatinized starch evenly, and at the same time add 2-18‰ of food-grade preservatives to prepare dust suppression powder; pass the dust suppression powder through a colloid mill and water Mix evenly, in which the mass ratio of dust suppression powder to water is 1:30, and stir for 40 minutes to obtain a dust suppressant. Use liquid conveying equipment to transport the prepared dust suppressant solution to a night storage tank for use.

[0041] The spraying amount of the obtained dust suppressant is not less than 2.2L / m 2 Evenly spray on the pulverized coal, the thickness of the formed solidified layer is greater than 10mm, and the dust suppressant will not cover the vehicle mark after spraying. It is determined that the wind erosion rate of the dust suppressant solution in this example is less than 10%.

Embodiment 2

[0043] Mix 5 parts by weight of sapphire gum and 55 parts by weight of corn pregelatinized starch evenly, and at the same time add 2-18‰ of food-grade preservatives to prepare dust suppression powder; pass the dust suppression powder through a colloid mill and water Mix evenly, wherein the mass ratio of dust suppression powder to water is 1:150, and stir for 40 minutes to obtain dust suppressant. Use liquid conveying equipment to transport the prepared dust suppressant solution to the night storage tank for use.

[0044] The spraying amount of the obtained dust suppressant is not less than 2.2L / m 2 Spray evenly, the thickness of the formed solidified layer is greater than or equal to 10mm, and the dust suppressant will not cover the vehicle mark after spraying. It is determined that the wind erosion rate of the dust suppressant solution in this example is less than 10%.

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Abstract

The invention relates to a dust suppressant for suppressing mineral powder and bare ground dust and a preparation method thereof. The dust suppressant comprises dust suppression powder and water witha mass ratio of 1:(30-150). The dust suppression powder includes 5-45 parts by weight of gelling agents, 5-55 parts by weight of an auxiliary material and a food-grade preservative which accounts for2 to 18 in a thousand of the total mass of the dust suppression powder. The gelling agents include one or more of sesbania gum, carboxymethyl cellulose, polyacrylamide, latex powder, maltodextrin, guar gum and xanthan gum. The auxiliary material is corn pre-gelatinized starch. Through the reasonable collocation of modified starch, the dust depressant has strong adhesion with the mineral powder andgood wind erosion resistance and dust suppression effect. The prepared dust suppressant solution has the advantages of low viscosity, small power required for spraying, good stability, difficult delamination and low use cost. The production raw materials of the dust suppressant is easily available and low in cost.

Description

technical field [0001] The invention relates to the technical field of environmental protection and dust suppression, in particular to a dust suppressant for suppressing dust on mineral powder and exposed ground and a preparation method thereof, and is especially suitable for controlling dust suppression during transportation of mineral powder products, as well as stacks of mineral powder and exposed ground. dust suppression. Background technique [0002] In the process of railway bulk coal transportation, due to the speed of the coal train and the action of the wind, the pulverized coal particles on its surface are easily blown away from the car body, which not only causes the waste of coal resources and the economic loss of the cargo owner, but also It pollutes the environment along the railway line, especially on the railway line where passengers and goods are mixed, and the raised coal dust particles will also pose a serious threat to the health of passengers in passenge...

Claims

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Application Information

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IPC IPC(8): C09K3/22
CPCC09K3/22
Inventor 张平敏霍茂清薛峰于佳欢
Owner 北京首创大气环境科技股份有限公司
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