A kind of preparation method of using liquid ammonium nitrate to produce powder emulsion explosive
A powdery emulsion explosive and ammonium nitrate technology, which is applied to explosive processing equipment, explosives, offensive equipment, etc., can solve the problems of high energy consumption, low production efficiency, and high production cost, and achieve reduced environmental pollution and low production cost , the effect of improving production efficiency
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[0024] refer to figure 1 , a kind of preparation method that uses liquid ammonium nitrate to produce powdery emulsion explosive that the present invention proposes, comprises the steps:
[0025] S1. Preparation of NH 4 NO 3 Solution: first with NH 3 Neutralizing concentration is 50-60% HNO 3 A concentration of 80-87% NH is obtained 4 NO 3 Solution, during the neutralization process, the temperature is 175-180 ° C, the pressure is 0.4-0.5 MPa, and then the obtained concentration of 80-87% NH 4 NO 3 The solution is concentrated by falling film evaporation using a multi-effect falling film evaporator to obtain NH with a concentration of 95-99%. 4 NO 3 Solution, wherein the liquid flow rate in the multi-effect falling film evaporator is 0.5-1m / s;
[0026] S2. Preparation of oil phase solution: Weigh 3-4 parts of paraffin wax, 3-4 parts of modified rosin, 1-2 parts of stearic acid, 1-2 parts of petroleum asphalt according to the volume ratio and carry out at a temperature ...
Embodiment 1
[0034] A kind of preparation method that uses liquid ammonium nitrate to produce powdery emulsion explosive that the present invention proposes comprises the following steps:
[0035] S1. Preparation of NH 4 NO 3 Solution: first with NH 3 Neutralization concentration is 50% HNO 3 to get a concentration of 80% NH 4 NO 3 Solution, during the neutralization process, the temperature is 175 ° C, the pressure is 0.4 MPa, and then the obtained concentration is 80% NH 4 NO 3 The solution is concentrated by falling film evaporation using a multi-effect falling film evaporator to obtain NH with a concentration of 95%. 4 NO 3 Solution, wherein the liquid velocity in the multi-effect falling film evaporator is 0.5m / s;
[0036] S2. Preparation of oil phase solution: Weigh 3 parts of paraffin wax, 3 parts of modified rosin, 1 part of stearic acid, and 1 part of petroleum asphalt by volume ratio, and mix them at a temperature of 120° C. to obtain an oil phase solution, wherein the T...
Embodiment 2
[0044] A kind of preparation method that uses liquid ammonium nitrate to produce powdery emulsion explosive that the present invention proposes comprises the following steps:
[0045] S1. Preparation of NH 4 NO 3 Solution: first with NH 3 Neutralization concentration is 57% HNO 3 A concentration of 86% NH is obtained 4 NO 3 Solution, during the neutralization process, the temperature is 177 ° C, the pressure is 0.43 MPa, and then the obtained concentration is 86% NH 4 NO 3 The solution is concentrated by falling film evaporation using a multi-effect falling film evaporator to obtain NH with a concentration of 98%. 4 NO 3 Solution, wherein the liquid velocity in the multi-effect falling film evaporator is 0.5m / s;
[0046] S2. Preparation of oil phase solution: Weigh 3 parts of paraffin wax, 3 parts of modified rosin, 1 part of stearic acid, and 1 part of petroleum pitch according to the volume ratio, and mix them at a temperature of 125° C. to obtain an oil phase soluti...
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