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Expanded ammonium nitrate explosive and preparation method thereof

A technology of expanded ammonium nitrate explosives and expanded ammonium nitrate, which is applied in the field of expanded ammonium nitrate explosives and its preparation, can solve the problems of low density of expanded ammonium nitrate explosives, low combustion calorific value of wood powder, and influence on product performance. , stable quality and low cost

Active Publication Date: 2019-10-29
青海海西东诺化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned traditional expanded ammonium nitrate explosive has the following disadvantages: 1. Due to the low density of wood flour, the density of the finished expanded ammonium nitrate explosive is low, and the workability per unit volume is small
2. Poor fluidity, wood powder is easy to absorb moisture and affect product performance
3. my country's wood resources are relatively scarce, and the wood powder on the market is often mixed with impurities such as bakelite, so the quality cannot be guaranteed and the cost is high
4. The combustion calorific value of wood powder is low

Method used

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  • Expanded ammonium nitrate explosive and preparation method thereof

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preparation example Construction

[0027] Further, the preparation method of above-mentioned expanded ammonium nitrate explosive comprises the following steps:

[0028] Step 1: Dissolve ammonium nitrate in water to a saturated solution, add an expanding agent to fully dissolve, inhale into an expansion tank in a vacuum state and expand to obtain a semi-finished product;

[0029] Step 2: mixing the expanded ammonium nitrate obtained in step 1 with coal powder, compound oil and copper sulfate to obtain a mixture;

[0030] Step 3: After charging and packaging the mixture obtained in Step 1, the finished expanded ammonium nitrate explosive is obtained.

[0031] Further, in the preparation method of the above-mentioned expanded ammonium nitrate explosive, the step 1 is specifically: dissolving ammonium nitrate in water into a saturated solution at 125-138°C, and then adding 0.12-0.15% expanding agent to fully dissolve it, and inhaling it in a vacuum state The expansion tank is expanded for 8-12 minutes, so that its...

Embodiment 1

[0034] An expanded ammonium nitrate explosive prepared from the following raw materials in parts by weight:

[0035] 91 parts of expanded ammonium nitrate; 3.5 parts of coal powder; 3 parts of composite oil phase; 3 parts of copper sulfate;

[0036] The composite oil phase is formed by melting and mixing diesel oil and composite wax in a weight ratio of 3.5:1.5.

[0037] The pulverized coal is coking coal.

[0038] The composite wax is MF-1 composite wax.

[0039] The preparation method of above-mentioned expanded ammonium nitrate explosive comprises the following steps:

[0040] Step 1: Dissolve ammonium nitrate in water to a saturated solution at 125°C, then add 0.12% expanding agent to fully dissolve, inhale into an expansion tank in a vacuum state and expand for 8 minutes, so that its moisture content is less than or equal to 0.1%, and its bulk density is less than or equal to 0.53g / cm 3 get semi-finished products;

[0041] Step 2: mixing the expanded ammonium nitrat...

Embodiment 2

[0045] The invention provides an expanded ammonium nitrate explosive, which is prepared from the following raw materials in parts by weight:

[0046] 92 parts of expanded ammonium nitrate; 4 parts of coal powder; 3.5 parts of composite oil phase; 3.5 parts of copper sulfate;

[0047] The pulverized coal is coking coal.

[0048] The composite oil phase is formed by mixing diesel oil, composite wax, semi-refined paraffin and petrolatum in a weight ratio of 4:1:0.3:0.2;

[0049] The composite wax is MF-2 composite wax.

[0050] The preparation method of above-mentioned expanded ammonium nitrate explosive comprises the following steps:

[0051] Step 1: Dissolve ammonium nitrate in water to a saturated solution at 130°C, add 0.13% expanding agent to fully dissolve, inhale into an expansion tank in a vacuum state and expand for 10 minutes, so that its moisture content is less than or equal to 0.1%, and its bulk density is less than or equal to 0.53g / cm 3 get semi-finished produ...

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Abstract

The invention relates to the field of explosive production, in particular to an expanded ammonium nitrate explosive and a preparation method thereof. The expanded ammonium nitrate explosive is prepared from the following raw materials in parts by weight: 91-93 parts of expanded ammonium nitrate, 3.5-4.5 parts of pulverized coal, 3-4 parts of a composite oil phase and 3-4 parts of copper sulfate; and the composite oil phase includes diesel oil and composite wax, and the weight ratio of the diesel oil to the composite wax is (3 to 4):(1 to 2). The pulverized powder is selected to replace wood flour to serve as a combustible agent of the expanded ammonium nitrate explosive, meanwhile, the copper sulfate is added, the composition proportion of the composite oil phase is synergistically improved, thus compared with traditional wood flour, the prepared expanded ammonium nitrate explosive serves as expanded ammonium nitrate explosive of the combustible agent, the property is greatly improved,the expanded ammonium nitrate explosive has the advantages of high combustion heat value, high density, low cost and stable quality, the improved explosive is good in free-flowing property and not liable to absorb moisture, sympathetic detonation is obviously improved, and the detonation velocity is obviously increased.

Description

technical field [0001] The invention relates to the field of explosive production, in particular to an expanded ammonium nitrate explosive and a preparation method thereof. Background technique [0002] At present, the traditional production process formula of expanded ammonium nitrate explosive is an industrial explosive mixed with self-sensitizing, low-density expanded ammonium nitrate as an oxidant, and wood powder and composite fuel oil as a combustible agent. The above-mentioned traditional expanded ammonium nitrate explosive has the following disadvantages: 1. Due to the low density of wood flour, the finished expanded ammonium nitrate explosive has a low density and low workability per unit volume. 2. Poor fluidity, wood powder is easy to absorb moisture and affect product performance. 3. my country's wood resources are relatively scarce, and the wood powder on the market is often mixed with impurities such as bakelite, so the quality cannot be guaranteed and the cos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06B31/28
CPCC06B31/285
Inventor 和蛟鲍俊赖金文王国香李锋李东海吉玉林汪发玉刘瑞安李颖林洪进青
Owner 青海海西东诺化工有限公司
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