Solid dust suppressant

A dust suppressant and solid-state technology, which is applied in the field of dust pollution prevention and control of powdery materials, can solve the problems of difficult spraying, brittle film formation, and easy blockage of nozzles, etc., to increase service life, reduce transportation losses, and ensure health and safety. Effect

Inactive Publication Date: 2015-08-05
INNER MONGOLIA BORAN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] 2. The dust suppressants involved in the above patents are all aqueous solution products, causing unnecessary troubles in the transportation and use of dust suppressants
[0014] Although there are also solid-state dust suppressants in use now, most of them are made of starch as the main component and mixed with other additives. The film-forming strength is low, and more importantly, the viscos

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Mix 2.5Kg phenylacryltriazole, 1.5Kg sodium pyrophosphate, 1Kg sodium tripolyphosphate, 5Kg sodium dodecylsulfonate evenly, then take 20Kg polyvinyl alcohol, 20Kg carboxymethyl cellulose, 30Kg gelatin, 20Kg Mix sodium nitrate tetrahydrate evenly.

[0039] Stir and mix the above two groups of mixtures evenly to obtain the finished solid dust suppressant.

[0040] After dissolving the finished product in water at a weight ratio of 1:100, the main technical indicators of the test solution are: viscosity (25°C) 8.6mPa s; pH value 6.8; wind loss rate (30mm / s wind speed 5mins, %) 0.26; solidification Layer thickness 12.25mm; film tensile strength 11mpa; film elongation at break 10%; material bursting strength 0.055mpa.

[0041] Compared with the technical indicators of commercially available dust suppressants: viscosity (25°C) 32.4mPa s; pH value 6.2; wind loss rate (30mm / s wind speed 5mins, %) 0.57; solidified layer thickness 13.38mm; film tensile strength 14mpa; film The ...

Embodiment 2

[0043] Mix 2Kg borax, 2Kg sodium pyrophosphate, and 5Kg sodium dodecylsulfonate evenly, then take 45Kg polyvinyl alcohol, 20Kg carboxymethyl cellulose, 3Kg polyacrylamide, 5Kg gelatin, and 18Kg calcium chloride dihydrate and mix evenly .

[0044] Stir and mix the above two groups of mixtures evenly to obtain the finished solid dust suppressant.

[0045] Dissolve the finished product in water at a weight ratio of 1:100. Test technical indicators: viscosity (25°C) 18.6mPa s; pH value 7.0; wind loss rate (30mm / s wind speed 5mins, %) 0.38; thickness of the solidified layer 13.25mm; The tensile strength of the film is 9mpa; the elongation at break of the film is 12%; the bursting strength of the material is 0.057mpa.

Embodiment 3

[0047] Mix 2.5Kg sodium nitrite, 2Kg sodium tripolyphosphate, and 5Kg sodium lauryl sulfate evenly, then take 4735Kg polyvinyl alcohol, 35Kg carboxymethyl cellulose and 8Kg xanthan gum and mix evenly.

[0048] Stir and mix the above two groups of mixtures evenly to obtain the finished solid dust suppressant.

[0049] Dissolve the finished product in water at a weight ratio of 1:100. Test technical indicators: viscosity (25°C) 16.8mPa s; pH value 6.5; wind loss rate (30mm / s wind speed 5mins, %) 0.26; thickness of solidified layer 11.0mm; The tensile strength of the film is 6mpa; the elongation at break of the film is 11.5%; the bursting strength of the material is 0.06mpa.

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Abstract

A solid dust suppressant is prepared by mixing 40-90% of a water-soluble high molecular polymer, 5-40% of water-soluble high molecular glue, 0-25% of a moisture absorption humectant, 0.5-5% of a flexibilizer, 1-5% of an antiseptic and 3-10% of an osmotic agent, and has the characteristics of high film forming strength, low brightness and moderate viscosity. The viscosity (at 25DEG C), the pH value, the wind loss rate (under 30mm/s wind speed 5mins, %), the cured layer thickness, the film tensile strength, the film elongation at break and the material bursting strength of the solid dust suppressant are not lower than 8.0mPa.s, 6.0-7.0, not greater than 0.40, not lower than 11.25mm, greater than 11mpa, greater than 13% and greater than 0.05mpa respectively, and the solid dust suppressant realizes difficult brittle rupture after film formation, has a long effective dust suppression time and an ideal dust suppression effect.

Description

technical field [0001] The invention relates to the prevention and control of dust pollution of powdery materials, in particular to a dust suppressant for preventing and controlling dust generated by powdery materials during railway transportation. Background technique [0002] Dust pollution is one of the main factors leading to environmental pollution. Production and storage sites such as ports, power plants, cement plants, and coal storage yards, as well as railway and road transportation, often produce a large amount of dust, which not only directly threatens production safety, but also causes great pollution to the surrounding environment. [0003] During the transportation of coal, due to the turbulent operation of coal trucks and the influence of wind and climate, the surrounding environment and the coal dust pollution along the road and railway are serious. Especially when the coal truck passes through the tunnel, the coal dust is flying and accumulating in the tunn...

Claims

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Application Information

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IPC IPC(8): C09K3/22
Inventor 陈守东侯凤
Owner INNER MONGOLIA BORAN TECH CO LTD
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