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ANFO (ammonium nitrate/fuel oil) and preparation method thereof

A technology of ammonium oil explosives and diesel oil, which is applied in the field of ammonium oil explosives and its preparation, which can solve problems such as affecting blasting engineering, loss of detonator sensitivity, and rejection of blasting, and achieves the effects of simple production process, superior explosive performance, and long storage time

Inactive Publication Date: 2015-04-29
HONGDA MINING IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, ammonium oil explosives have the disadvantages of poor storage stability, short time, and easy moisture absorption and caking.
This seriously affects the production, transportation, use and storage of ammonium fuel explosives
Once the ammonium oil explosives fail, etc., it will cause the explosion rejection of the explosives in the blast hole, which is very dangerous and complicated to deal with. In severe cases, it will threaten the safety of public property and the surrounding people, and seriously affect the blasting project and even the entire construction project.
[0004] Diesel in ammonium fuel explosives plays the role of fuel and waterproof, but ammonium nitrate is an inorganic salt that easily absorbs water, and long-term storage will still cause water absorption and agglomeration of ammonium fuel explosives
When the ammonium nitrate in the ammonium oil explosive absorbs water, a layer of water film will be formed between the diesel oil and ammonium nitrate, hindering the contact between ammonium nitrate and diesel oil, causing it to lose the sensitivity of the detonator, and the explosion rejection phenomenon will appear in the blasting project

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1 is selected with industrial production 50kg new formula ammonium oil explosives, and the selected component and mass ratio are: ammonium nitrate, 45kg; Diesel oil, 2.55kg; Wood powder, 2.25kg; Ammonium oleate 0.2kg.

[0019] Under above-mentioned components and proportioning, implementation steps are as follows:

[0020] The first step is to add ammonium oleate into the diesel oil and stir until it is completely dissolved;

[0021] In the second step, all the ammonium nitrate is added to the dispersion mixer according to the amount;

[0022] The third step is to inject the mixed diesel oil into the dispersion mixer, stir for 10 minutes, and then stand still for 5 minutes;

[0023] The fourth step is to slowly add the weighed wood powder into the dispersion mixer and stir for 15 minutes; the fifth step is to stop stirring, filling and sealing. A new formula of ammonium oil explosives can be prepared.

[0024] After testing, the explosive properties of the...

Embodiment 2

[0025] Embodiment 2 is selected with industrial production 50kg new formula ammonium oil explosives equally, and the component of selection and mass proportioning are: ammonium nitrate, 45.5kg; Diesel oil, 1.75kg; Wood powder, 2.5kg; Ammonium oleate 0.25kg.

[0026] Under above-mentioned components and proportioning, implementation steps are as follows:

[0027] The first step is to add ammonium oleate into the diesel oil and stir until it is completely dissolved;

[0028] In the second step, all the ammonium nitrate is added to the dispersion mixer according to the amount;

[0029] The third step is to inject the mixed diesel oil into the dispersion mixer, stir for 10 minutes, and then stand still for 5 minutes;

[0030] The fourth step is to slowly add the weighed wood powder into the dispersion mixer and stir for 15 minutes; the fifth step is to stop stirring, filling and sealing. A new formula of ammonium oil explosives can be prepared.

[0031] After testing, the explo...

Embodiment 3

[0032] Embodiment 3 is selected with industrial production 50kg new formula ammonium oil explosives equally, and the component of selection and mass ratio are: ammonium nitrate, 46kg; Diesel oil, 0.95kg; Wood powder, 2.75kg; Ammonium oleate 0.3kg.

[0033] Under above-mentioned components and proportioning, implementation steps are as follows:

[0034] The first step is to add ammonium oleate into the diesel oil and stir until it is completely dissolved;

[0035] In the second step, all the ammonium nitrate is added to the dispersion mixer according to the amount;

[0036] The third step is to inject the mixed diesel oil into the dispersion mixer, stir for 10 minutes, and then stand still for 5 minutes;

[0037] The fourth step is to slowly add the weighed wood powder into the dispersion mixer and stir for 15 minutes; the fifth step is to stop stirring, filling and sealing. A new formula of ammonium oil explosives can be prepared.

[0038] After testing, the explosive perfo...

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Abstract

The invention provides ANFO (ammonium nitrate / fuel oil) and a preparation method thereof. According to the preparation method, 0.4 wt%-0.6 wt% of oleic acid is added to 3.0 wt%-5.5 wt% of diesel oil, the mixture is stirred until completely dissolved, and mixed diesel oil is obtained; 90 wt%-92 wt% of ammonium nitrate is added to a dispersion stirrer; the mixed diesel oil is injected into the dispersion stirrer, and the mixture is stirred for 10 min and then left to stand for 5 min; 4.5 wt%-5.5 wt% of wood meal is added to the dispersion stirrer slowly, and the mixture is stirred for 15 min; stirring is stopped, packaging and sealing are performed, and the ANFO is obtained. The formula is simple, the cost of the raw materials is lower, the production process is simple and suitable for continuous automatic production, and the ANFO is the stable in performance, longer in storage time and more excellent in explosion performance.

Description

technical field [0001] The invention belongs to the technical field of industrial explosives, in particular to an ammonium oil explosive and a preparation method thereof. Background technique [0002] Ammonium oil explosive refers to a powdery or granular explosive mixture composed of ammonium nitrate and fuel. In recent years, with the rapid development of our national economy, there have been more and more infrastructure projects, such as the excavation of large domestic mines, the construction of railway tunnels, the development of quarrying and so on. The demand for domestic industrial explosives is also increasing, and ammonium oil explosives are developing more and more rapidly. [0003] However, ammonium oil explosives have the disadvantages of poor storage stability, short time, and easy moisture absorption and caking. This seriously affects the production, transportation, use and storage of ammonium fuel explosives. Once the ammonium oil explosive fails, etc., it...

Claims

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Application Information

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IPC IPC(8): C06B31/30C06B23/00
Inventor 王阳宋锦泉郑炳旭李战军成旭卫星
Owner HONGDA MINING IND
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