Heat-resistant porous granular ammonium nitrate fuel oil explosive and preparation method thereof

A technology of ammonium oil explosives and granular ammonium nitrate, which is applied in the direction of explosives, etc., can solve the problems of high explosives price, poor heat resistance, and unsatisfactory performance, and achieve good application prospects and economic benefits, improve mixing uniformity, and good contact. Effect

Active Publication Date: 2015-08-19
CHINA GEZHOUBA GRP YIPULI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Researchers have considered using high-temperature-resistant single-substance explosives, but such explosives are prohibitively expensive
[0004] At present, porous granular ammonium oil explosives are composed of porous granular ammonium nitrate and oil phase materials, such as the disclosed porous granular ammonium oil explosives of CN101973827A and CN102942427A, which have poor heat resistance
It can not be used when blasting operation in high temperature fire zone

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Take the production of 1 ton of heat-resistant porous granular ammonium oil explosive as an example: the heat-resistant porous granular ammonium oil explosive consists of the following components: 945kg of porous granular ammonium nitrate and 55kg of oil phase material. The oil phase material is composed of 54.7kg of the second type base oil (flash point greater than 200°C) and 0.3kg of antioxidant 2,6-di-tert-butylphenol.

[0024] Prepare as follows:

[0025] (1) Add the base oil and antioxidant into the oil phase preparation tank, heat and stir until the dissolution is complete, and the temperature reaches 80°C.

[0026] (2) Add the base oil in which the antioxidant is dissolved into the porous granular ammonium nitrate, and continue stirring and mixing for 15 minutes to obtain a heat-resistant bulk porous granular ammonium oil explosive.

[0027] When the temperature of the explosive drops below 40°C, the explosive is packed into a bag or directly pumped into the bl...

Embodiment 2

[0030] Take the production of 1 ton of heat-resistant porous granular ammonium oil explosive as an example: the heat-resistant porous granular ammonium oil explosive consists of the following components: 940kg of porous granular ammonium nitrate and 60kg of oil phase material. The oil phase material is composed of 59.7kg of the third type base oil (flash point greater than 200°C) and 0.3kg of antioxidant 2,4-dimethyl-6-tert-butylphenol.

[0031] Prepared as follows

[0032] (1) Add the base oil and antioxidant into the oil phase preparation tank, heat and stir until the dissolution is complete, and the temperature reaches 80°C.

[0033] (2) Add the base oil in which the antioxidant is dissolved into the porous granular ammonium nitrate, and continue stirring and mixing for 10 minutes to obtain a heat-resistant bulk porous granular ammonium oil explosive.

[0034] When the temperature of the explosive drops below 40°C, the explosive is packed into a bag or directly pumped into...

Embodiment 3

[0037] Take the production of 1 ton of heat-resistant porous granular ammonium oil explosive as an example: the heat-resistant porous granular ammonium oil explosive consists of the following components: 950kg of porous granular ammonium nitrate and 50kg of oil phase material. The oil phase material is composed of the fourth type of base oil (flash point greater than 200°C).

[0038] The preparation method of heat-resistant ammonium oil explosives comprises the following steps:

[0039] Heat the base oil to 85°C and add it into the porous granular ammonium nitrate, keep stirring and mixing for 18 minutes to obtain a heat-resistant bulk porous granular ammonium oil explosive.

[0040] When the temperature of the explosive drops below 40°C, the explosive is packed into a bag or directly pumped into the blast hole.

[0041] Tested by differential scanning calorimetry, the heat-resistant porous granular ammonium oil explosive has been kept at a constant temperature of 120°C for 2...

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PUM

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Abstract

The invention discloses a heat-resistant porous granular ammonium nitrate fuel oil explosive. The heat-resistant porous granular ammonium nitrate fuel oil explosive is characterized by comprising, by weight, 92-98% of porous granular ammonium nitrate and 2-8% of oil-phase material, and the oil-phase material is base oil or is a mixture of the base oil and antioxidant. The invention further discloses a preparation method of the heat-resistant porous granular ammonium nitrate fuel oil explosive. The heat-resistant porous granular ammonium nitrate fuel oil explosive and the preparation method thereof have the advantages that by means of cooperation between the base oil and the porous granular ammonium nitrate, the base oil is adsorbed easily by the porous granular ammonium nitrate, and mixing is more uniform, so that detonation sensitivity of the explosive is improved; the prepared explosive can be used at the temperature above 120 DEG C, so that the problem of poor heat resistance of a porous granular ammonium nitrate fuel oil explosive at high temperature is solved.

Description

technical field [0001] The invention relates to the field of industrial explosive formulations, in particular to a heat-resistant porous granular ammonium oil explosive and a preparation method thereof. Background technique [0002] Blasting operations in high-temperature fire areas have always been a major problem that needs to be solved in fire area mining in open-pit coal mines. The predecessors have proposed many solutions in terms of blasting operations: ① cooling down the blast hole to extinguish the fire; ② selecting high-temperature-resistant insulation materials; ③ selecting High temperature resistant blasting equipment; ④ Optimizing the practicality of blasting, etc. These methods only ensure that the explosives are in a safe temperature environment in a short period of time, but do not fundamentally solve the heat resistance of explosives. [0003] Researchers have considered using high-temperature-resistant single-substance explosives, but such explosives are pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06B31/28
Inventor 刘大维杨敏会李晓虎
Owner CHINA GEZHOUBA GRP YIPULI CO LTD
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