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Coal mine underground excavation face sulfur-free foam dust suppressant

A technology of excavation surface and dust suppressant, which is applied in the fields of dust prevention, mining equipment, earth-moving drilling, etc.

Active Publication Date: 2018-12-21
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of flour dust in underground mining of coal mines, the present invention provides a sulfur-free foam dust suppressant for underground mining faces of coal mines, which can effectively reduce the concentration of flour dust in mining excavations, improve the visibility of fully mechanized mining faces and driving faces, and at the same time, will not increase mining output. coal sulfur content

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  • Coal mine underground excavation face sulfur-free foam dust suppressant
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Examples

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Effect test

Embodiment 1

[0015] Embodiment 1: A kind of sulfur-free foam dust-repelling agent for coal mine underground mining face, the preparation method is: add 0.5kg carbon chain length 8-10 in 93.9kg water, the APG that glycoside polymerization degree is 1.4, 1.5kg carbon chain length is 8- 10, AEC with EO polymerization degree of 4, 2kg of AEO with carbon chain length of 10-12 and EO polymerization degree of 9 9 , 0.5kg carboxymethyl cellulose, 0.1kg hydroxyethyl cellulose, 1.5kg sodium tripolyphosphate, and stir to make it evenly mixed.

Embodiment 2

[0016] Embodiment 2: A kind of sulfur-free foam dust-repelling agent for coal mine underground mining face, the preparation method is: in 93.8kg water, add 1.0kg carbon chain length 10-12, glycoside polymerization degree is 2.0 APG, 1.0kg carbon chain length is 8- 10, AEC with an EO polymerization degree of 3, 1.5kg of AEO with a carbon chain length of 8-10 and an EO polymerization degree of 9 9 , 0.4kg carboxymethyl cellulose, 0.3kg hydroxyethyl cellulose, 1.5kg sodium tripolyphosphate, and stir to make it evenly mixed.

Embodiment 3

[0017] Embodiment 3: A kind of sulfur-free foam dust suppressant for coal mine underground mining face, the preparation method is: in 90.7kg water, add 3.0kg carbon chain length 10-12, glycoside polymerization degree is 1.4 APG, 1.0kg carbon chain length is 8- 10, AEC with an EO polymerization degree of 5, 2.5kg of AEO with a carbon chain length of 8-10 and an EO polymerization degree of 3 3 , 0.2kg carboxymethyl cellulose, 0.6kg hydroxyethyl cellulose, 2.0kg sodium tripolyphosphate, and stir to make it evenly mixed.

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Abstract

The invention belongs to the technical field of coal mine underground excavation face dust suppressants, aims at solving the problem of coal mine underground excavation face dust and provides a coal mine underground excavation face sulfur-free foam dust suppressant which is prepared by the following step of mixing one or more of APG, AEC and AEO nonionic surfactants, a film-forming agent, a hard water resistance agent and water according to a ratio to form a foamer. In the use process, the foamer and water are added in a tunneling machine coal mining injection foam dust collector according toa ratio of 1 to (100-150), or a continuous adding manner is adopted, the foamer and the water are continuously added in an injection foam dust collector according to a flow rate of 1 to (100-150), wherein the flow rate of the water is about 5-15 L / min, and the volume flow rate ratio of the water to air is 1 to (2-10). The coal mine underground excavation face sulfur-free foam dust suppressant effectively lowers the concentration of the dust of an excavation face, increases the visibility of a comprehensively excavated face and a heading face without increasing the content of sulfur of producedcoals at the same time, lowers the concentration of the dust of the working face, guarantees the physical and psychological health of a worker, lowers the water consumption of dust suppression and reduces the dust suppression cost.

Description

technical field [0001] The invention belongs to the technical field of dust-reducing agents for underground mining faces of coal mines, and in particular relates to a sulfur-free foam dust-reducing agent for underground mining faces of coal mines. Background technique [0002] In the process of coal mining, dust is an inevitable by-product that affects production safety and the personal safety of coal miners. Without dust prevention measures, the dust concentration of fully mechanized mining face reaches 2500-3000mg / m 3 , the flour dust concentration of fully mechanized caving work is higher, and some mines can reach 8000-10000 mg / m 3 , seriously exceeding the national standard, such a high dust concentration has a great impact on the physical and mental health of underground workers, and the resulting pneumoconiosis and silicosis have brought great torture to the lives of patients. In addition, the visibility of the excavation face is low, which seriously affects the minin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/22E21C35/22E21F5/06
CPCC09K3/22E21C35/22E21F5/06
Inventor 李刚森付思美赵治军温幸
Owner TAIYUAN UNIV OF TECH