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

A dust suppressant, ground technology, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of non-renewable resources, etc., achieve low price, easy to use, good effect of anti-wind erosion and dust suppression

Inactive Publication Date: 2019-04-05
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 suppressing ore powder and bare ground dust, comprising the steps of:

[0022] A. Mix 5-45 parts by weight of gelling agent and 15-50 parts by weight of auxiliary materials evenly, and add 2-18‰ of food-grade preservatives at the same time to obtain dust-suppressing powder, wherein the gelling agent includes field One or more of cyanine gum, carboxymethyl cellulose, polyacrylamide, latex powder, maltodextrin, guar gum, xanthan gum, and the auxiliary materials are tapioca pregelatinized starch, sodium humate, One or more of glucose, humic acid, attapulgite, diatomaceous earth;

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

Embodiment 1

[0040] Mix 5 parts by weight of squash gum and 50 parts by weight of cassava pregelatinized starch evenly, and add 2 to 18‰ of food-grade preservatives at the same time to obtain a dust-suppressing powder; pass the dust-suppressing powder through a colloid mill and water Mix evenly, wherein the mass ratio of dust suppressant powder to water is 1:30, and stir for 40 minutes to prepare dust suppressant, and use liquid conveying equipment to transport the prepared dust suppressant solution to the storage tank for later use.

[0041] The spraying amount of the prepared dust suppressant shall not be less than 2.2L / m 2 Spray evenly on the coal powder, the thickness of the formed solidified layer is greater than 10mm, and the dust suppressant will not cover the vehicle marks after spraying. It is determined that the wind erosion rate of the dust suppressant solution in this embodiment is less than 10%.

Embodiment 2

[0043] Mix 5 parts by weight of squash gum and 50 parts by weight of cassava pregelatinized starch evenly, and add 2 to 18‰ of food-grade preservatives at the same time to obtain a dust-suppressing powder; pass the dust-suppressing powder through a colloid mill and water Mix evenly, wherein the mass ratio of dust suppressant powder to water is 1:150, and stir for 40 minutes to prepare dust suppressant, and use liquid conveying equipment to transport the prepared dust suppressant solution to the storage tank for later use.

[0044] The spraying amount of the prepared dust suppressant shall not be less than 2.2L / m 2 Spray evenly, the thickness of the formed cured layer is greater than or equal to 10mm, and the dust suppressant does not cover the vehicle marks after spraying. It is determined that the wind erosion rate of the dust suppressant solution in this embodiment is less than 10%.

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Abstract

The invention relates to a dust suppressant for suppressing mineral powder and dust exposed on the ground and a preparation method thereof. The dust suppressant comprises dust suppressing powder and water according to a mass ratio of 1:(30-150), the dust suppressing powder comprises, by weight, 5-45 parts of gelatinizing agent, 15-50 parts of auxiliary material and food-grade preservative accounting for 2-18% of total mass of the dust suppressing powder, the gelatinizing agent comprises one or multiple of sesbania gum, carboxymethylcellulose, polyacrylamide, latex powder, maltodextrin, guar gum and xanthan gum, and the auxiliary material comprises tapioca gelatinized starch, sodium humate, glucose, humic acid, attapulgite and diatomite. Through reasonable matching with modified starch, high bonding force with the mineral powder and good wind-erosion-resistant dust suppressing effect, a prepared dust suppressant solution is low in viscosity, little in power needed for spraying, high instability, less prone to layering and low in using cost, and production raw materials of the dust suppressant itself are easy to get and low in cost.

Description

technical field [0001] The invention relates to the field of environmental protection and dust suppression technologies, in particular to a dust suppressant for suppressing dust on mineral powder and bare ground and a preparation method thereof, and is especially suitable for controlling dust suppression including transportation of mineral powder products, mineral powder stockpiles, and bare ground. dust suppression. Background technique [0002] During the transportation of railway bulk coal, due to the speed of the coal train and the action of wind, the coal powder particles on the surface of the train 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 The environment along the railway is polluted, especially on the railway line where passengers and goods are mixed, and the pulverized coal particles raised will also pose a serious threat to the health of passengers on passenger train...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/22
CPCC09K3/22
Inventor 霍茂清张平敏于佳欢薛峰
Owner 北京首创大气环境科技股份有限公司
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