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A high-density moisture-proof ammonium nitrate fuel oil explosive and a preparation method thereof

An ammonium oil explosive, high-density technology, applied in the direction of explosive processing equipment, explosives, explosive composite components, etc., can solve the problem of losing blasting ability, achieve ideal settlement shape, reduce mechanical life, and avoid the effect of polluting the environment

Pending Publication Date: 2018-11-09
CHINA SHENHUA ENERGY CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In addition, since the pre-installation time of throwing blasting generally spans 5-7 days, some of the installed ammonium oil explosives are likely to lose their blasting ability in the humid environment at the bottom of the blast hole, which may cause a series of safety production problems. Can we study Developing a high-density moisture-proof ammonium oil explosive as the main drug for throwing blasting and new mineral oil instead of light diesel oil as the combustible agent for the production of ammonium oil explosives have been researched by experts in the blasting industry for many years. With the high demand of coal mining efficiency and the further optimization of low consumption of diesel consumption, this research is particularly urgent

Method used

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  • A high-density moisture-proof ammonium nitrate fuel oil explosive and a preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] (1) Preparation of latex matrix without detonator sensitivity

[0053] Transport 30.5 tons of liquid ammonium nitrate (concentration 88%-92%, temperature 110-130°C, pH 5.5-6.5) to the liquid ammonium solution preparation tank, add 3.8 tons of demineralized water, add citric acid 10.5kg, sulfur 14kg of urea, 2kg of sodium carbonate, the addition interval is 10 minutes, and 34.4 tons of oxidant solution are obtained after continuous stirring; the pH value of the above oxidant solution is 3.9, the crystallization point is 60°C, and the temperature is 72°C;

[0054] Mix the prepared oxidant solution at 184kg / min and the composite oil phase produced by Beijing Beikuang Yibo Technology Co., Ltd. at a temperature of 46°C in a mass ratio of 92:8, and continuously input it at a speed of 16kg / min. Stir in the emulsification mixing tank at a speed of 600-650 rpm to form colostrum, which is pumped by a screw pump and passed through a static emulsifier to produce 37.4 tons of latex ...

Embodiment 2

[0060] (1) Preparation of latex matrix without detonator sensitivity

[0061] Transport 32.5 tons of liquid ammonium nitrate (concentration 88%-92%, temperature 110-130°C, pH 5.5-6.5) to the liquid ammonium solution preparation tank, add 4.8 tons of demineralized water, add citric acid 11.5kg, sulfur 14.5 kg of urea and 3 kg of sodium carbonate were added at an interval of ten minutes, and 37.3 tons of oxidant solution were obtained after being continuously halved; the pH value of the above oxidant solution was 3.9, the crystallization point was 61° C., and the temperature was 74° C.;

[0062] Mix the prepared oxidant solution at 184kg / min and the composite oil phase at a temperature of 48°C according to the mass ratio of 92:8, and continuously input it into the emulsification stirring tank at a speed of 16kg / min for stirring, and the stirring speed is 600 -650 rpm, forming colostrum, which is pumped by a screw pump and passed through a static emulsifier to produce 40.5 tons o...

Embodiment 3

[0068] (1) Preparation of latex matrix without detonator sensitivity

[0069] Transport 32.5 tons of liquid ammonium nitrate (concentration 88%-92%, temperature 110-130°C, pH 5.5-6.5) to the liquid ammonium solution preparation tank, add 3.6 tons of demineralized water, add citric acid 11.5kg, sulfur 14.5 kg of urea and 3 kg of sodium carbonate were added at an interval of ten minutes, and 36.1 tons of oxidant solution were obtained after being continuously halved; the pH value of the above oxidant solution was 3.9, the crystallization point was 61° C., and the temperature was 74° C.;

[0070] Mix the prepared oxidant solution at 184kg / min and the composite oil phase at a temperature of 48°C according to the mass ratio of 92:8, and continuously input it into the emulsification stirring tank at a speed of 16kg / min for stirring, and the stirring speed is 600 -650 rpm, forming colostrum, which is pumped by a screw pump and passed through a static emulsifier to produce 39.2 tons o...

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Abstract

A high-density moisture-proof ammonium nitrate fuel oil explosive and a preparation method thereof are provided. The explosive includes porous ammonium nitrate particles, mineral oil and a latex matrix. The mass percentage of the latex matrix in the explosive is 35-36.4%, and the density of the latex matrix is 1.38-1.40 g / cm<3>. The method includes fully mixing the latex matrix, the porous ammonium nitrate particles and the mineral oil to obtain the explosive. The invention provides the high-density moisture-proof ammonium nitrate fuel oil explosive and the preparation method thereof.

Description

technical field [0001] The invention relates to a high-density moisture-proof ammonium oil explosive and a preparation method thereof, belonging to the technical field of engineering blasting. Background technique [0002] In the field of engineering blasting, ammonium oil explosives are mainly used for throwing blasting. In addition to many aspects such as blasting parameter design, charge structure, connection mode and initiation sequence, each blasting amount and explosive consumption, etc., which are very different from loose blasting, it is particularly important to select the appropriate type of explosive as the main drug for throwing blasting. The essential. [0003] In order to achieve a good throwing blasting effect, according to the principle that when the explosion wave velocity of the explosive matches the wave velocity of the rock, the explosion energy of the explosive is transferred to the blasting rock with the most energy, the scientifically designed ammoniu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06B31/28C06B21/00
CPCC06B21/0008C06B31/285
Inventor 郭占江李波薛占山张润和张志刚王建英马鸿源王永明周志同
Owner CHINA SHENHUA ENERGY CO LTD
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