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Powdered emulsified ammonium nitrate explosive
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An ammonium nitrate explosive and powdery technology is applied in the directions of explosives, explosives processing equipment, non-explosive/non-thermal agent components, etc., and can solve the problems of poor intrinsic safety, excessive energy consumption, viscosity of emulsification matrix, etc., and achieves low cost. , the effect of low energy consumption, easy flow and transportation
Active Publication Date: 2015-12-23
CHINA COAL TECH & ENG GRP HUAIBEIBLASTING TECHN RES INST
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Abstract
Description
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Problems solved by technology
For example, the high molecular polymer emulsifier used in this product formula and the high shear strength adopted by the emulsification process (emulsification mixing equipment speed 2500r min -1 ~2900r·min -1 ), making the emulsification matrix very viscous, resulting in excessive energy consumption in the process of atomization into powder; in addition, the high-pressure airflow equipment used in the spray drying process of powdery emulsion explosives consumes a lot of power and has poor intrinsic safety
Although the Chinese patent CN101045662A proposed improvement measures for CN1061213A (mainly simplifying the formula, in order to improve the explosive performance, high-energy solids were added to the mixture after spraying into powder), however, the original high-shear emulsification-high-pressure spraying of this technology - The crafting mode of tower milling has not changed
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[0044] The specific operation steps of preparing emulsified powdery ammonium nitrate explosive are as follows:
[0045] Step 1: Add ammonium nitrate, sodium nitrate and water into the container, heat and dissolve, and raise the temperature to 135°C;
[0046] The second step: heat and melt semi-refined paraffin, ozokerite and T-703, and raise the temperature to 100°C;
[0047] The third step: in the state of stirring (850r min -1 ) Add the water phase material to the oil phase material and mix, then stir for 1 min to form a uniform paste mixture;
[0048] The fourth step: pass the paste mixture prepared in the third step through figure 1 The s...
Embodiment 2
[0052] The used raw material of making 10kg emulsified powdery ammonium nitrate explosive is as follows:
[0060] The specific operating steps and experimental conditions for preparing emulsified powdery ammonium nitrate explosive are the same as in Example 1.
[0061] When the charge diameter is 35mm, the charge density is 0.95g cm -3 , when the moisture content of the explosive mixture is 0.20%, the measured explosive performance of the product is: detonation velocity 3960m·s -1 , 13cm in martyrdom, and 341ml in working capacity.
Embodiment 3
[0063] The used raw material of making 10kg emulsified powdery ammonium nitrate explosive is as follows:
[0068] The specific operating steps and experimental conditions for preparing emulsified powdery ammonium nitrate explosive are the same as in Example 1.
[0069] When the charge diameter is 35mm, the charge density is 0.95g cm -3 , when the moisture content of the explosive mixture is 0.20%, the measured explosive performance of the product is: detonation velocity 4050m·s -1 , Sacrificial explosion 12cm, working capacity 345ml.
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Abstract
The invention discloses a powdery emulsified ammoniumnitrate explosive, which comprises the following composition mixed in mass percent: 89-95% ammoniumnitrate, 0-5.5% sodiumnitrate, 3-5% oil phase material, and alkyl imidazoline emulsifier 1.5 to 2.5, water 0.1 to 0.3; among them, ammonium nitrate or a mixture of ammonium nitrate and sodium nitrate constitutes an oxidant, oil phase materials and alkyl imidazoline salt emulsifiers constitute a combustible agent, which is formed by emulsification, liquid phase mixing, and spray drying. A homogeneous mixture of crystal explosives in oil. The invention has a simple formula, uses an alkyl imidazoline emulsifier, facilitates the flow and transportation of materials, and facilitates subsequent spraying into powder and air drying, and has excellent explosive performance, stable product storage, and certain water resistance; The inner tube is sprayed into powder, and the vacuum gravity generated by the compressed airflow in the Venturi tube makes the material flow drawn out by negative pressure, without adding liquid pumps or screw pumps. The production process consumes less energy, and the production process has high intrinsic safety and large production capacity. ,low cost.
Description
technical field [0001] The invention relates to a powdery emulsified ammonium nitrate explosive, which belongs to the technical field of preparation of industrial explosives. Background technique [0002] Powdered emulsion explosives emulsify and mix the oxidizer and combustible agent in a liquid state, and the contact area of the oxidant and combustible agent is close to that of the emulsion explosive. Therefore, powdery emulsion explosives show high explosive performance (such as detonation velocity 3500m s -1 ~4500m·s -1 , Sacrificial explosion 8cm ~ 20cm, explosive force 300ml ~ 350ml). Foreign patent documents have disclosed powdery emulsion explosives earlier, such as: EP0238210, US4525225, US4548659, US4685124, etc., the main technical characteristics of which are that the oxidant and combustible agent are prepared into a two-phase solution of water and oil. Emulsify and disperse the two-phase solution of water and oil into a uniform mixture, and then add a nucle...
Claims
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Application Information
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Patent Type & Authority Patents(China)
IPC IPC(8): C06B31/28C06B23/00C06B21/00
Inventor 张现亭王作鹏夏光张东杰
Owner CHINA COAL TECH & ENG GRP HUAIBEIBLASTING TECHN RES INST
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