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Method for preparing high density bulking ammonium nitrate explosive

A technology of expanded ammonium nitrate explosives and expanded ammonium nitrate, which is applied in the direction of explosives, etc., can solve the problems of reduced working ability, impact on rock blasting effect, and low energy density, and achieve the effects of increasing volume power, convenient operation, and simple process

Inactive Publication Date: 2006-08-23
广东省四〇一厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During popularization and application, it was found that the bulk density of expanded ammonium nitrate powder was too small, which caused the energy density in the explosion reaction to be too small, and the working ability decreased, thus affecting the blasting effect on rocks.

Method used

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  • Method for preparing high density bulking ammonium nitrate explosive

Examples

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Comparison scheme
Effect test

Embodiment 1

[0010] Get 750kg ammonium nitrate, add 75kg water, when heating to 115 ℃, add 1.125kg surfactant, surfactant is the mixture of octadecylamine acetate, stearic acid and sorbitan monolaurate, continue Heating, when the temperature of the material rises to 130°C, pump it into a crystallization tank with a vacuum degree of -0.088MPa to pass the material to crystallize, and the temperature of the crystallized expanded ammonium nitrate is controlled at 100°C; the prepared expanded ammonium nitrate is mixed with 190kg of unexpanded Ammonium nitrate fine powder is blended, 95% of unexpanded ammonium nitrate fine powder is passed through a 40-mesh sieve, and 30kg of oil phase and 30kg of wood flour are added. The oil phase is light diesel oil, 35 # The mixture of mechanical oil and paraffin was mixed for 20 minutes, and the discharging temperature was controlled at 65° C. to obtain 1000 kg of expanded ammonium nitrate explosive.

Embodiment 2

[0012] Take 700kg of ammonium nitrate, add 56kg of water, when heated to 100°C, add 1.05kg of surfactant, the surfactant is a mixture of sodium lauryl sulfate and sodium methanesulfonate, continue heating until the temperature of the material rises to 120°C , pumped to a crystallization tank with a vacuum degree of -0.092MPa for crystallization, and the temperature of the crystallized expanded ammonium nitrate was controlled at 95°C; the prepared expanded ammonium nitrate was blended with 200kg of unexpanded ammonium nitrate fine powder, without expansion 90% of ammonium nitrate fine powder is passed through a 40 mesh sieve, and 50kg of oil phase and 50kg of wood flour are added, and the oil phase is 40 # The mixture of machine oil and ozokerite was mixed for 10 minutes, and discharged, and the discharge temperature was controlled at 55° C. to obtain 1000 kg of expanded ammonium nitrate explosive.

Embodiment 3

[0014] Take 720kg of ammonium nitrate, add 65kg of water, when heated to 110°C, add 1.08kg of surfactant, the surfactant is a mixture of octadecylamine carboxylate and stearic acid, continue heating until the temperature of the material rises to 125°C , pumped to a crystallization tank with a vacuum degree of -0.090MPa to pass material crystallization, and the temperature of the crystallized expanded ammonium nitrate was controlled at 90°C; the prepared expanded ammonium nitrate was blended with 200kg of unexpanded ammonium nitrate fine powder, without 93% of ammonium nitrate fine powder is passed through a 40 mesh sieve, and 40kg of oil phase and 40kg of wood powder are added. The oil phase is heavy diesel oil, 40 # The mixture of mechanical oil and paraffin was mixed for 15 minutes, and the discharge was carried out. The discharge temperature was controlled at 60° C. to obtain 1000 kg of expanded ammonium nitrate explosive.

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Abstract

The preparation process of high density bulked ammonium nitrate explosive includes the following steps: 1. adding water in 8-10 wt% into ammonium nitrate in 70-75 wt%, heating to 100-115deg.c, adding surfactant in 0.15 wt%, heating to 120-130deg.c, crystallizing at vacuum degree of -0.088 to -0.092 MPa and discharging puffed ammonium nitrate at 90-100deg.c; and 2. mixing the puffed ammonium nitrate with fine un-puffed ammonium nitrate powder in 18-23 wt%, oil phase in 3-5 wt% and wood powder in 3-5 wt% for 10-20 min, and discharging at 55-65deg.c. The present invention can raise the density of bulked ammonium nitrate explosive to 0.97-1.02g / cu cm, reaching that of AN-TNT explosive, and has raised volume power, explosive performance superior to AN-TNT explosive, simple technological process and convenient operation.

Description

technical field [0001] The invention relates to a preparation method of expanded ammonium nitrate explosive. Background technique [0002] The existing expanded ammonium nitrate explosive is to dissolve ordinary crystallized ammonium nitrate in water to make an ammonium nitrate solution, add a surfactant to treat the surface of the solution, carry out vacuum expansion crystallization to obtain expanded ammonium nitrate, and mix the expanded ammonium nitrate with the oil phase After being mixed with wood powder, it is made into expanded ammonium nitrate explosives, which can obtain the same explosive performance as ammonium ladder explosives without the traditional toxic substance TNT sensitization. It is non-toxic and pollution-free. . In popularization and application, it is found that the bulk density of expanded ammonium nitrate explosive is too small, which causes the energy density of the explosive reaction to be too small, and the working ability decreases, thus affec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06B31/28
Inventor 黄志平肖开文李国亮刁建彬何作荣何文东李振明潘载玉
Owner 广东省四〇一厂
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