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Ultrafine powder composition for restraining coal dust explosion and preparation method thereof

A technology of ultra-fine powder and composition, which is applied in dust prevention, mining equipment, earthwork drilling and mining, etc. It can solve the problems of insufficient explosion suppression performance, low explosion suppression efficiency, and limited performance, and achieves a strong ability to capture free radicals , good fluidity, fast endothermic response

Pending Publication Date: 2019-06-14
SHANDONG UNIV OF SCI & TECH
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Problems solved by technology

At present, rock powder is commonly used as a powdered anti-explosion agent to suppress coal dust explosions in coal mines. During coal dust explosions, rock powder is spread to reduce the oxygen concentration, thereby achieving the purpose of inhibiting the flame propagation of coal dust explosions. The effect of suppressing coal dust explosion is single, and the large amount is easy to absorb moisture and agglomerate, and the performance in suppressing explosion is limited. The anti-explosion efficiency of traditional powder anti-explosion agent is low, and the anti-explosion performance is not good enough

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  • Ultrafine powder composition for restraining coal dust explosion and preparation method thereof

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Embodiment Construction

[0017] The present invention provides an ultrafine powder composition for suppressing coal dust explosion and its preparation method. In order to make the purpose, technical scheme and effect of the present invention clearer and clearer, the present invention will be further described in detail below.

[0018] An ultrafine powder composition for suppressing coal dust explosion, comprising raw materials in parts by weight: molybdenum trioxide: 37.3%-75.4%, ammonium sulfite: 15.0%-40.0%, cobalt nitrate hexahydrate: 1.5%-2.5% %, shell powder: 1.5% to 2.5%, silicon dioxide: 1.5% to 3.0%, stannous chloride: 3.7% to 41.8%, aspartic acid: 1.4% to 2.0%.

[0019] In addition, different raw material ratios can be selected, such as raw materials including weight percentage: molybdenum trioxide: 40.0% to 60.0%, ammonium sulfite: 20.0% to 35.0%, cobalt nitrate hexahydrate: 1.5% to 2.5%, shell powder : 1.5%~2.5%, silicon dioxide: 1.5%~3.0%, stannous chloride: 4.0%~30.0%, aspartic acid: 1.5%...

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Abstract

The invention discloses an ultrafine powder composition for restraining coal dust explosion and a preparation method thereof. The ultrafine powder composition for restraining the coal dust explosion is prepared from the following components in percentage by weight: 37.3%-75.4% of molybdenum trioxide, 15.0%-40.0% of ammonium sulfite, 1.5%-2.5% of cobalt nitrate hexahydrate, 1.5%-2.5% of shell powder, 1.5%-3.0% of silicon dioxide, 3.7%-41.8% of stannous chloride and 1.4%-2.0% of aspartic acid. According to the ultrafine powder composition for restraining the coal dust explosion, good synergisticeffect is achieved between the components, the action of restraining the coal dust explosion is achieved from physics and chemistry aspects, so that the explosion suppression performance of an explosion suppression agent of the ultrafine powder composition for restraining the coal dust explosion is greatly improved, and the ultrafine powder composition for restraining the coal dust explosion hasthe advantages of good powder diffuse performance, easy suspension in air, high thermal decomposition speed, extra high catching free radical capacity, good water repellence performance, high mobilityperformance and high anti-agglomeration performance.

Description

technical field [0001] The invention relates to the technical field of explosion suppressants, in particular to an ultrafine powder composition for suppressing coal dust explosion and a preparation method thereof. Background technique [0002] Coal dust in most mines in my country is explosive, and coal dust explosion is one of the major disasters that affect the safety of coal mine production. Coal dust explosion suppression technology is an important means to prevent and control coal dust explosions. The core of explosion suppression technology is the research and development of explosion suppression agents with better explosion suppression performance. At present, rock powder is commonly used as a powdered anti-explosion agent to suppress coal dust explosions in coal mines. During coal dust explosions, rock powder is spread to reduce the oxygen concentration, thereby achieving the purpose of inhibiting the flame propagation of coal dust explosions. The effect of suppress...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F5/08
Inventor 孟祥豹马雪松肖琴王俊峰崔丽媛
Owner SHANDONG UNIV OF SCI & TECH
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