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Catalyzing composite powder explosion suppression material, and preparation method thereof

A composite powder and catalytic technology, which is applied in mining equipment, earth square drilling, dust prevention, etc., can solve the problems of easy deliquescence, serious agglomeration and adhesion, and small specific surface area, so as to achieve easy control of production conditions and improve explosion suppression Features, easy-to-operate effects

Inactive Publication Date: 2020-09-15
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It has been studied by scholars at home and abroad as a representative explosion inhibitor, but this type of explosion inhibitor has no pores, small specific surface area, and is prone to deliquescence at room temperature, and the phenomenon of agglomeration and adhesion is relatively serious

Method used

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  • Catalyzing composite powder explosion suppression material, and preparation method thereof
  • Catalyzing composite powder explosion suppression material, and preparation method thereof
  • Catalyzing composite powder explosion suppression material, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] The catalytic type composite powder antiknock agent prepared in this embodiment, wherein ferrocene, KHCO 3 , grinding aids and desiccant mass fractions were 5%, 90%, 3%, 2%.

[0050] Specific steps are as follows:

[0051] Step 1, 1g ferrocene, 18g KHCO 3 1. Put 0.6g of grinding aid into a blast drying oven at a temperature of 45°C and dry for 12 hours.

[0052] Step 2, ferrocene, KHCO after step 1 drying 3 1. Put the grinding aid into the planetary ball mill, and then put 50g of small balls with a diameter of 5mm-20mm. Control the frequency to 40 Hz, and after grinding for 20 minutes, add 0.4 g of hydrophobic nano-silica, and grind for another 10 minutes at the same frequency.

[0053] Step 3, the ground composite powder is sieved to 325 mesh, and then placed in a blast drying oven at a controlled temperature of 45° C. for 12 hours to obtain a catalytic composite powder inhibitor with a ferrocene content of 5%.

Embodiment 2

[0055] The catalytic type composite powder antiknock agent prepared in this embodiment, wherein ferrocene, KHCO 3 The mass fractions of grinding aid, desiccant and desiccant are 10%, 85%, 3%, 2% respectively.

[0056] Specific steps are as follows:

[0057] Step 1, 2g ferrocene, 17g KHCO 3 1. Put 0.6g of grinding aid into a blast drying oven at a temperature of 45°C and dry for 12 hours.

[0058] Step 2, ferrocene, KHCO after step 1 drying 3 1. Put the grinding aid into the planetary ball mill, and then put 50g of small balls with a diameter of 5mm-20mm. Control the frequency to 40 Hz, and after grinding for 20 minutes, add 0.4 g of hydrophobic nano-silica, and grind for another 10 minutes at the same frequency.

[0059] Step 3, sieve the ground composite powder to 325 mesh, and then put it into a blast drying oven at a controlled temperature of 45°C for 12 hours to obtain a catalytic composite powder inhibitor with a ferrocene content of 10%.

Embodiment 3

[0061] The catalytic type composite powder antiknock agent prepared in this embodiment, wherein ferrocene, KHCO 3 , grinding aids and desiccant are respectively 15%, 80%, 3%, 2%.

[0062] Specific steps are as follows:

[0063] Step 1, 3g ferrocene, 16g KHCO 3 1. Put 0.6g of grinding aid into a blast drying oven at a temperature of 45°C and dry for 12 hours.

[0064] Step 2, ferrocene, KHCO after step 1 drying 3 1. Put the grinding aid into the planetary ball mill, and then put 50g of small balls with a diameter of 5mm-20mm. Control the frequency to 40 Hz, and after grinding for 20 minutes, add 0.4 g of hydrophobic nano-silica, and grind for another 10 minutes at the same frequency.

[0065] Step 3, the ground composite powder is sieved to 325 meshes, and then placed in a blast drying oven at a controlled temperature of 45° C. for 12 hours to obtain a catalytic composite powder inhibitor with a ferrocene content of 15%.

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Abstract

The invention belongs to the field of explosion suppression agents and relates to a catalyzing composite powder explosion suppression material, and a preparation method thereof. The material is prepared from ferrocene and KHCO3, a trace grinding aid and a drying agent through a dry method combination technology. The method comprises: drying the ferrocene, the KHCO3 and the grinding aid; grinding the ferrocene, the KHCO3 and the grinding aid; adding the drying agent and continuing grinding; and sieving and drying powder obtained after grinding. According to the dry method combination technology, a peculiar grinding mode of a planetary ball mill is applied, so that full contact of two monomer explosion suppression agents can be realized, and the surface of a net structure of the ferrocene iscoated with the KHCO3. After full contact of the two explosion suppression agents, hydrophobic nano-silicon dioxide is then added to enhance hydrophobicity of the composite explosion suppression agent. The material and method disclosed by the invention have the beneficial effects that prices of basic materials are low; operations are simple; production conditions can be controlled easily; and thematerial and method are suitable for large-scale industrial production.

Description

technical field [0001] The invention belongs to the field of explosion suppression agents, and relates to a catalytic composite powder explosion suppression material and a preparation method thereof. Background technique [0002] Mine gas explosion accident is one of the most destructive accidents in coal mine disasters, which seriously affects the safety of human production and brings huge disasters to human society. The prevention and control of gas explosion has always been one of the key points of coal mine safety work. Relevant research institutions in my country have carried out extensive research in the field of gas explosion prevention, and invested a lot of time and energy in testing and researching economical and efficient methane explosion suppression agents. At present, the most widely used powder antiknock agents are carbonates, phosphates, hydroxides, halides, SiO 2 , ferrocene, urea, montmorillonite, etc. Since the inhibitory effect of monomeric detonation ...

Claims

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Application Information

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IPC IPC(8): E21F5/00E21F17/00
CPCE21F5/00E21F17/00
Inventor 郑凯王雪燕余明高韩世新陈传东
Owner CHONGQING UNIV
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