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Production method of porous granular ammonium nitrate

A granular ammonium nitrate and production method technology, applied in the field of porous ammonium nitrate, can solve the problems of energy waste, material and energy waste, unfavorable safety production, etc., and achieve the effect of good detonation sensitivity and explosive performance

Inactive Publication Date: 2011-09-07
陈靖宇
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The common defect of above three kinds of methods is: 1) remaining porous granular ammonium nitrate after screening can not directly use because particle size does not meet the requirement, can only rework again, cause a large amount of waste on the material and energy; 2) prepare porous granular ammonium nitrate Or the granular ammonium nitrate that must be prepared in the early stage, the temperature requirements of liquid ammonium nitrate or ammonium nitrate solution are higher, both exceeding 130°C. a lot of waste

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] Add 100kg of water into the dissolving tank and heat it. When the temperature rises to 70°C, add 1150kg of ammonium nitrate into the dissolving tank and continue heating and stirring; when the ammonium nitrate is completely dissolved and reaches 125°C, add 60kg of ammonium nitrate to the ammonium nitrate solution for natural accumulation The density is 55kg / m 3 And 100% by the expanded perlite powder of 40 mesh sieves, continue to stir with the stirring speed of 65 revs / min, make expanded perlite be uniformly dispersed in the ammonium nitrate aqueous solution and form suspension; ~800 rpm) granulation, dry and cool to make porous granular ammonium nitrate moisture less than 0.3%, temperature lower than 40°C; sieve qualified products with a particle size of 0.5mm to 2.5mm, and products with other particle sizes will be packaged separately.

Embodiment 2

[0011] Add 80kg of water into the dissolving tank and heat it. When the temperature rises to 70°C, add 1150kg of ammonium nitrate into the dissolving tank and continue heating and stirring; when the ammonium nitrate is completely dissolved and reaches 125°C, add 60kg of ammonium nitrate to the ammonium nitrate solution for natural accumulation The density is 55kg / m 3 And 100% by the expanded perlite powder of 40 mesh sieves, continue to stir with the stirring speed of 65 rev / mins to make expanded perlite evenly dispersed in the ammonium nitrate aqueous solution and form suspension; 800 rev / min) granulation, dry and cool to make porous granular ammonium nitrate moisture less than 0.3%, temperature lower than 40°C; sieve out qualified products with a particle size of 0.5mm to 2.5mm, and products with other particle sizes will be packaged separately.

Embodiment 3

[0013] Add 100kg of water into the dissolving tank and heat it. When the temperature rises to 70°C, add 1150kg of ammonium nitrate into the dissolving tank and continue heating and stirring; when the ammonium nitrate is completely dissolved and reaches 130°C, add 60kg of ammonium nitrate to the ammonium nitrate solution for natural accumulation The density is 100kg / m 3 And 100% by the expanded perlite powder of 40 mesh sieves, continue to stir with the stirring speed of 65 revs / min, make expanded perlite be uniformly dispersed in the ammonium nitrate aqueous solution and form suspension; ~800 rpm) granulation, dry and cool to make porous granular ammonium nitrate moisture less than 0.3%, temperature lower than 40°C; sieve qualified products with a particle size of 0.5mm to 2.5mm, and products with other particle sizes will be packaged separately.

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Abstract

The invention discloses a production method of porous granular ammonium nitrate. The invention aims to provide a production method of porous granular ammonium nitrate with high oil absorption rate, convenience of adjusting density, low cost, simple technical process, high safety and a microporous structure. The production method comprises the following steps of: adding expanded perlite into ammonium nitrate solution to mix completely; adding the obtained mixed suspension into pelleting equipment to perform pelleting. The production method is mainly used for producing the novel porous granular ammonium nitrate of porous granular ammonium nitrate fuel oil explosive, powdery ammonium nitrate explosive and heavy ammonium nitrate fuel oil explosive.

Description

technical field [0001] The invention relates to a production method of porous ammonium nitrate used for preparing porous granular ammonium nitrate explosives, powdered ammonium nitrate explosives and heavy ammonium nitrate oil explosives, in particular to a production method of porous granular ammonium nitrate. Background technique [0002] The preparation method of existing porous granular ammonium nitrate mainly contains following several: 1) add blowing agent in the liquid ammonium nitrate, make liquid ammonium nitrate crystallize into solid granular ammonium nitrate by granulation, heat up and make be distributed in granular ammonium nitrate The foaming agent volatilizes, and the space occupied by the original foaming agent is replaced by air to form porous granular ammonium nitrate of different particle sizes, and the porous granular ammonium nitrate that meets the particle size requirements is screened out to make the finished product. 2) A small amount of surfactant i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06B31/28
Inventor 陈靖宇
Owner 陈靖宇
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