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Modified ammoium nitrate fuel oil (ANFO) explosive and preparing method thereof

An ammonium oil explosive and modification technology, which is applied in the direction of explosives, etc., can solve problems such as the shortage of combustible agent resources, and achieve the effects of avoiding recrystallization, improving physical properties, and improving storage and explosive performance

Active Publication Date: 2012-10-24
LIAONING HONGSHAN CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of shortage of combustible agent resources in the production process of modified ammonium oil explosives, and to produce a cheap combustible agent without affecting the performance of explosives

Method used

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  • Modified ammoium nitrate fuel oil (ANFO) explosive and preparing method thereof
  • Modified ammoium nitrate fuel oil (ANFO) explosive and preparing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Process ratio: 91.7 wt% ammonium nitrate, 0.3 wt% composite modifier, 4.0 wt% composite oil phase, 1.0 wt% rice husk powder, and 3.0 wt% sunflower seed hull powder.

[0031] 1) 91.7% by weight of ammonium nitrate and 0.3% of the total weight of the raw materials are mixed and pulverized, and dried at 80°C-95°C until the water content is not more than 0.2%.

[0032] 2) Add compound oil phase accounting for 4.0% of the total weight of the raw material to the dry material and mix evenly, and the temperature is controlled at 80°C-95°C;

[0033] 3) Mix evenly with rice husk powder accounting for 1.0% of the total weight and sunflower seed hull powder accounting for 3.0% of the total weight, and after the moisture meets the requirements, send it to the explosive cold mixer. After the materials are evenly mixed and the temperature drops below 40°C Out of the material, the moisture content of the powder is not more than 0.3%.

Embodiment 2

[0035] Process ratio: 91.5 wt% ammonium nitrate, 0.3 wt% composite modifier, 3.7 wt% composite oil phase, 1.5 wt% rice husk powder, and 3.0 wt% sunflower seed hull powder.

[0036] 1) Mix and pulverize 91.5% ammonium nitrate by weight percentage with 0.3% composite modifier accounting for the total weight of raw materials, and dry at 80°C-95°C until the moisture content is no more than 0.2%;

[0037] 2) Add a compound oil phase accounting for 3.7% of the total weight of the raw material to the dry material and mix evenly, and the temperature is controlled at 80°C-95°C;

[0038] 3) Mix evenly with rice husk powder accounting for 1.5% of the total weight and sunflower seed hull powder accounting for 3.0% of the total weight, and after the moisture meets the requirements, send it to the explosive cold mixer. After the materials are evenly mixed and the temperature drops below 40°C Out of the material, the moisture content of the powder is not more than 0.3%.

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Abstract

The invention relates to a new material for a modified ANFO explosive, and in particular relates to a modified ANFO explosive and a preparing method thereof by using rice hull powder and sunflower seed hide powder as a combustible agent. The modified ANFO explosive comprises, by matched group, 91.5%-93.5wt% of ammonium nitrate, 0.2-0.4wt% of compound modifying agent, 3.0-4.0wt% of compound oil phase and 3.5-4.5wt% of combustible agent, wherein the matching ratio total of raw materials is 100%, the compound modified agent is one or more of octadecylamine phosphate, sulfonate or borate, the compound oil phase is one or more of paraffin, soap wax, asphalt, three line oil and microcrystalline wax, and the combustible agent is a mixture of the rice hull powder and the sunflower seed hide powder. According to the modified ANFO explosive and the preparing method thereof, rice hull powder serves as the combustible agent of the modified ANFO explosive, not only the explosion performance of the explosive is improved, but also the product physical property is improved, and the product storage life is prolonged.

Description

technical field [0001] The invention relates to a new material of a modified ammonium oil explosive, in particular to a modified ammonium oil explosive using rice husk powder and sunflower seed hull powder as combustible agents and a preparation method thereof. Background technique [0002] At present, most of the modified ammonium oil explosives produced in China use wood powder as combustible agent. Due to the limited resources of trees and the high demand for wood powder in the explosives industry, there will inevitably be shortages, limiting the production of powdered ammonium nitrate explosives. Moreover, wood flour is a porous body with hygroscopicity. In addition to the free water contained, the adsorbed water contained reaches 30%, which is difficult to get rid of during the drying process, and as the water decreases, the size of the pores between the particles also shrinks. , Moisture retention is better, so when drying wood powder, a higher temperature and a dryin...

Claims

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Application Information

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IPC IPC(8): C06B31/28
Inventor 胡殿贵李新富徐桂苹于来海董维军高艳娟杜义辉
Owner LIAONING HONGSHAN CHEM
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