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Special ammonium nitrate fuel oil explosive for underground inclined upward blast hole, and preparation method thereof

An ammonium explosive, oblique upward technology, applied in explosive processing equipment, explosives, non-explosive/non-thermal agent components, etc., can solve the problems of high mixing labor intensity, affecting the operation cycle, scattered explosives, etc., to reduce moisture The effect of risk, improving operation efficiency, and high success rate of charging

Inactive Publication Date: 2021-08-10
山西金恒化工集团股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Underground blasting operations require on-site preparation of explosives, but usually the site environment is relatively poor, staffing is reduced, and operating conditions are limited
[0003] When conventional powdery and granular ammonium oil explosives are used in upward blastholes, due to the upward / oblique upward angle, the charge will encounter the problem of explosives falling down, the blasting effect is poor, and static electricity is easy to generate, which is dangerous and mixed. High labor intensity and low charging efficiency affect the operation cycle
At this time, the explosives are required to have special physical properties, not only have a certain fluidity, but also have a certain cohesiveness, so that the explosives can adhere to the blast hole and not scatter. Generally, powdery and granular explosives cannot meet the requirements.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] An ammonium oil explosive specially used for obliquely upward blastholes in underground mines, the raw materials of which are the following components by weight percentage: 87% of porous granular ammonium nitrate, 2.4% of polyacrylamide, 4.8% of diesel oil, and 5.8% of binder.

[0031] The raw material of the adhesive is the following components by weight percentage: 37.60% of porous granular ammonium nitrate, 0.77% of polyacrylamide, 53.93% of water, and 7.70% of polyethylene glycol.

[0032] The adhesive is prepared at least one day before the production of the sticky explosive, and the preparation includes the following steps:

[0033] 1) Weigh water and polyethylene glycol in proportion and stir evenly until there is no obvious layering phenomenon to obtain a mixture;

[0034] 2) Weighing porous granular ammonium nitrate into the above mixture, heating and stirring when adding, heating temperature ≤ 70 ° C, until the porous granular ammonium nitrate is completely di...

Embodiment 2

[0041] An ammonium oil explosive specially used for obliquely upward blastholes in downholes, the raw materials of which are the following components by weight percentage: 86.6% of porous granular ammonium nitrate, 2.5% of polyacrylamide, 4.8% of diesel oil, and 6.1% of binder.

[0042] The raw materials of the binder are the following components in weight percentage: 37.00% of porous granular ammonium nitrate, 0.80% of polyacrylamide, 54.25% of water, and 7.95% of polyethylene glycol.

[0043] The adhesive is prepared at least one day before the production of the sticky explosive, and the preparation includes the following steps:

[0044] 1) Weigh water and polyethylene glycol in proportion and stir evenly until there is no obvious layering phenomenon to obtain a mixture;

[0045] 2) Weighing porous granular ammonium nitrate into the above mixture, heating and stirring when adding, heating temperature ≤ 70 ° C, until the porous granular ammonium nitrate is completely dissolve...

Embodiment 3

[0052] An ammonium oil explosive specially used for obliquely upward blastholes in underground mines, the raw materials of which are the following components by weight percentage: 86% of porous granular ammonium nitrate, 2.6% of polyacrylamide, 5.2% of diesel oil, and 6.2% of binder.

[0053]The raw materials of the adhesive are the following components by weight percentage: 37.80% of porous granular ammonium nitrate, 0.70% of polyacrylamide, 53.70% of water, and 7.80% of polyethylene glycol.

[0054] The adhesive is prepared at least one day before the production of the sticky explosive, and the preparation includes the following steps:

[0055] 1) Weigh water and polyethylene glycol in proportion and stir evenly until there is no obvious layering phenomenon to obtain a mixture;

[0056] 2) Weighing porous granular ammonium nitrate into the above mixture, heating and stirring when adding, heating temperature ≤ 70 ° C, until the porous granular ammonium nitrate is completely d...

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PUM

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Abstract

The invention discloses a special porous granular ammonium nitrate fuel oil explosive for an underground inclined upward blast hole. According to the improved ammonium nitrate fuel oil explosive, a porous granular explosive is bonded and coated, so that the problem of explosive scattering frequently encountered during charging of the underground inclined upward blast hole is solved, the charging success rate is high, the blasting performance is good, the safety performance is high, no toxic gas is generated after blasting, the influence on the human body and the environment is small, and meanwhile, the detonation velocity can reach 3000-3300 m / s. The invention also provides a preparation method of the ammonium nitrate fuel oil explosive. The whole process is safe and efficient, the operation is simple, the method is environment-friendly, the batching time can be completed within one day as soon as possible, the charging time is shortened, the damp risk of the explosive is reduced, and a guarantee is provided for the operation period.

Description

technical field [0001] The invention belongs to the technical field of industrial explosives, and in particular relates to an ammonium oil explosive specially used for obliquely upward blastholes in downholes and a production process thereof. Background technique [0002] Ammonium oil explosives have excellent blasting performance and are widely used in open-pit and underground non-coal mining blasting. Underground blasting operations require on-site preparation of explosives, but usually the site environment is relatively poor, staffing is reduced, and operating conditions are limited. [0003] When conventional powdery and granular ammonium oil explosives are used in upward blastholes, due to the upward / oblique upward angle, the charge will encounter the problem of explosives falling down, the blasting effect is poor, and it is easy to generate static electricity, which is dangerous and mixed. The labor intensity is high and the charging efficiency is low, which affects t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06B31/28C06B21/00C06B23/00
CPCC06B21/0025C06B23/001C06B31/285
Inventor 谢圣艳
Owner 山西金恒化工集团股份有限公司
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