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Ecological dust suppressant for surface mine dust treatment and preparation method thereof

A dust suppressant and ecological technology, which is applied in the field of ecological dust suppressant for dust control in open-pit mines and its preparation, can solve the problems of unfriendly environment, achieve the effects of improving affinity, improving dust suppression effect, and reducing water loss

Active Publication Date: 2020-05-08
ANSTEEL GRP MINING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide an ecological dust suppressant for dust control in open-pit mines and methods for its preparation and use, aiming at the problem that existing dust suppressants are not friendly to the environment.

Method used

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  • Ecological dust suppressant for surface mine dust treatment and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] An ecological dust suppressant, the content of each component:

[0032] Sodium silicate: 5%

[0033] Sodium dodecylbenzenesulfonate: 1%

[0034] Sodium polyacrylate: 2%

[0035] Glycerol: 2%

[0036] Sodium Lactate: 1.75%

[0037] Water: 88.25%.

[0038] 1) Add 2030g of water into the reactor, start stirring, and add 115g of sodium silicate;

[0039] 2) Slowly raise the temperature to 35°C, add 46g of sodium polyacrylate to make a sodium polyacrylate solution, and stir to dissolve;

[0040] 3) Add 46g of glycerol, 40.3g of sodium lactate, and 23g of sodium dodecylbenzenesulfonate in sequence, and stir the solution evenly;

[0041] 4) Add citric acid again, stir for 30 minutes at a rotating speed of 400r / min, the pH is measured to be 7.2, and the dust suppressant is obtained.

[0042] Dilute the dust suppressant by 5 times in proportion, and then spray it on the surface of the tailings or dump site, the spraying amount per unit area is 1.5kg / m 2 After the mound w...

Embodiment 2

[0053] An ecological dust suppressant, the content of each component:

[0054] Urea: 3.45%

[0055] Fatty alcohol polyoxyethylene ether: 3.45%

[0056] Sodium polyacrylate: 1.725%

[0057] Glycerol: 3%

[0058] Sodium Lactate: 1.725%

[0059] Water: 86.66%.

[0060] 1) Add 2009g of water into the reactor, start stirring, and add 80g of urea;

[0061] 2) Slowly raise the temperature to 40°C, add 40g of sodium polyacrylate to make a sodium polyacrylate solution, and stir to dissolve;

[0062] 3) Add 70g of glycerol, 40g of sodium lactate, and 80g of fatty alcohol polyoxyethylene ether in sequence, and stir the solution evenly;

[0063] 4) Add an appropriate amount of citric acid, stir for 30 minutes under a mixer with a rotating speed of 400r / min, and stir evenly. The optimum pH is measured as 6.8, and the dust suppressant is obtained.

[0064] Dilute the dust suppressant by 3 times in proportion, and then spray it on the surface of the tailings or dump site, the spraying a...

Embodiment 3

[0066] An ecological dust suppressant, the content of each component:

[0067] Sodium silicate: 9.80%

[0068] Tween 60: 3.52%

[0069] Sodium polyacrylate: 4.70%

[0070] Glycerol: 1.57%

[0071] Sodium Lactate: 1.57%

[0072] Water: 78.84%;

[0073] 1) Add 2011g of water into the reactor, start stirring, and add 250g of sodium silicate;

[0074] 2) Slowly raise the temperature to 40°C, add 120g of sodium polyacrylate to make a sodium polyacrylate solution, and stir to dissolve;

[0075] 3) Add 40g glycerol, 40g sodium lactate, and 90g Tween 60 in sequence, and stir the solution evenly;

[0076] 4) Add an appropriate amount of citric acid, stir for 50 minutes under a mixer with a rotating speed of 300r / min, stir evenly, and measure the pH to be 6.5 to obtain a dust suppressant.

[0077] Dilute the dust suppressant by 8 times in proportion, and then spray it on the surface of the tailings or dump site, the spraying amount per unit area is 1.5kg / m 2 After the mound was ...

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Abstract

The invention aims at solving the problem that an existing dust suppressant is not environmentally friendly, and provides an ecological dust suppressant for surface mine dust treatment and a preparation and use method of the ecological dust suppressant. The ecological dust suppressant is prepared from a water absorbent, a surfactant, sodium polyacrylate, glycerol, sodium lactate and water, and a proper amount of citric acid is added to enable the pH value in the system to be 7.0 + / -0.5; the dust suppressant disclosed by the invention is scientific and reasonable in raw material ratio; the surface tension of dust can be obviously reduced; the dust is quickly wetted and quickly coagulated and settled; meanwhile, repeated water absorption performance, evaporation resistance and the like are achieved, the water content of the dust is larger than a critical value (larger than 4%), the purpose of dust inhibition is achieved, a layer of cured film with certain strength and toughness can be formed on the surface of the dust, the dust inhibition efficiency is improved, the dust inhibition time is prolonged, mine atmospheric dust pollution can be effectively solved, and raw materials are environmentally friendly and free of pollution.

Description

technical field [0001] The invention belongs to the technical field of dust control, in particular to an ecological dust suppressant for dust control in open-pit mines and a preparation method thereof. Background technique [0002] As we all know, dust pollution is one of the world's public hazards, which seriously threatens the safety of the atmosphere, water and human body. Among them, the inhalable particles and fine particles in the mineral powder dust are easy to enrich heavy metal ions, organic oxides, bacteria and viruses, which are extremely harmful to the human body. Most domestic mining wastes are stored in the open air, covering a large area, especially in the northern regions due to the dry and windy climate in autumn and winter. As a result, the material dust in the storage yard is flying, which not only causes a sharp increase in the concentration of inhalable particulate matter in the atmosphere, but also seriously pollutes the environment, affects the health...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/22E21F5/06E21F3/00
CPCC09K3/22E21F5/06E21F3/00
Inventor 许灏高江孙健徐连生赵虹崔兆杰崔媚华杜冰峰
Owner ANSTEEL GRP MINING CO LTD
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