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Environmental-friendly dust suppressant and preparation method thereof

A dust suppressant, an environment-friendly technology, applied in the field of environmental pollution control, can solve the problems of inability to guarantee the quality of mineral bulk materials, increase ash content, etc., and achieve the effects of low cost, simple preparation process, and scientific and reasonable formula

Inactive Publication Date: 2010-10-06
刘步
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The biggest disadvantage of inorganic curing agents applied to the surface of bulk materials is that they will increase ash content, and most inorganic curing agents will have color on the surface after drying and forming layers on the surface of bulk materials, which cannot guarantee the quality of mineral bulk materials from the appearance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0021] (1) Preparation of solution A: Add 0.10-3.50% polyvinyl alcohol and deionized water into the reactor, heat at constant temperature until completely dissolved, then add NaOH dropwise to adjust the pH value, add 5ml of formaldehyde solution, stir the reaction, and use NaOH The pH of the solution is adjusted to be 6.5 to 7.5;

[0022] (2) Preparation of solution B: add urea 0.05-1.50%, glycerin 0.10-1.50%, ethylene glycol 0.10-1.50%, surfactant 0.05-1.00%, deionized water 91-96% into the container , stir evenly and clarify;

[0023] (3) Keep the prepared A solution at 60-90°C, slowly add the B solution and stir evenly to obtain a clear and transparent solution, that is, the dust suppressant stock solution;

[0024] (4), the dust suppressant stock solution prepared above can be directly used or diluted 0.5-20 times with deionized water, and is used for dust prevention of different bulk materials.

[0025] The constant temperature heating temperature in the above step (1) ...

Embodiment 1

[0032] 1) Preparation of A solution

[0033] Add 13.5 g of polyvinyl alcohol and 150 ml of deionized water into the reactor, and heat in a water bath to 85° C. until completely dissolved. After hydrochloric acid was added dropwise until the pH value was 1.5, 5 ml of 36% formaldehyde solution was added, the reaction temperature was controlled at 85° C. for 20 min, and the pH value was adjusted to 6.5 with NaOH solution.

[0034] 2) Preparation of B solution

[0035] Add 0.23g of urea, 0.46g of glycerol, 0.46g of ethylene glycol, 0.23g of surfactant, and 293ml of deionized water into the container and stir evenly for clarification.

[0036] 3) Preparation of dust suppressant stock solution

[0037] The prepared A solution was kept at 60°C, and the B solution was slowly added and stirred evenly to obtain a clear and transparent solution, that is, the dust suppressant stock solution.

Embodiment 2

[0039] 1) Preparation of A solution

[0040] Add 13.5 g of polyvinyl alcohol and 150 ml of deionized water into the reactor, and heat in a water bath to 95° C. until completely dissolved. After hydrochloric acid was added dropwise until the pH value was 1.5, 5 ml of 36% formaldehyde solution was added, the reaction temperature was controlled at 95° C. for 20 min, and the pH value was adjusted to 6.5 with NaOH solution.

[0041] 2) Preparation of B solution

[0042]Add 6.95g of urea, 0.46g of glycerol, 0.46g of ethylene glycol, 0.23g of surfactant, and 287ml of deionized water into the container and stir evenly for clarification.

[0043] 3) Preparation of dust suppressant stock solution

[0044] The prepared A solution was kept at 90°C, and the B solution was slowly added and stirred evenly to obtain a clear and transparent solution, namely the dust suppressant stock solution.

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Abstract

The invention relates to an environmental-friendly dust suppressant and a preparation method thereof, which are characterized in that the environmental-friendly dust suppressant comprises the following components in percentage by mass: 0.10 to 3.50 percent of polyvinyl alcohol, 0.05 to 1.50 percent of urea, 0.10 to 1.50 percent of propanetriol, 0.10 to 1.50 percent of glycol, 0.05 to 1.00 percentof surfactant and 91 to 96 percent of water. The environmental-friendly dust suppressant is prepared in the following steps that: preparation of solution A; preparation of solution B; the prepared A and B solution is mixed and stirred uniformly to obtain dust suppressant stock solution; and when in use, the stock solution is directly diluted by water by ration on demand. The invention is characterized by no toxin, no pollution, no corrosion, scientific and reasonable formula, simple preparation process, low cost, safety, environmental protection and energy saving, can form a continuous hard shell with a certain strength on a surface after being sprayed on the surface of material, and the dispersed material is sealed below the hard shell so as to have a dust-proof function and bring wide economic and social benefits.

Description

technical field [0001] The invention belongs to the technical field of environmental pollution control, and relates to a dust suppressant, in particular to an environment-friendly dust suppressant and a preparation method thereof. Background technique [0002] In iron and steel enterprises and coal plant power generation enterprises, a large amount of raw materials such as coal and mineral bulk materials and wastes such as fly ash and tailing ash are often stored or transported. Surface solidification dust suppression is an effective method for solid dust control, which can prevent bulk materials from being blown up by the wind and reduce losses during bulk material transportation and stacking. The method utilizes the bonding and film-forming properties of the solidified dust suppressant to form an effective protective layer after spraying on the surface of the granular bulk material to achieve the purpose of dust suppression. This method is also applied to aspects such as ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/22
Inventor 陈维岳
Owner 刘步
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