Mining emulsion explosive with high sulfur content and production process method thereof

Abstract

The invention relates to a high-sulfur-content mining emulsion explosive which comprises the following components in parts by weight: 73-75% of ammonium nitrate, 2.50-3.00% of thiourea and 0.030-0.035% of nitric acid; the oil phase component comprises the following components in parts by weight: 2.50%-3.00% of diesel oil, 1.50%-2.00% of engine oil and 1.00%-1.50% of an emulsifier; the sensitizing component comprises the following components in parts by weight: 0.010 to 0.015 percent of sodium nitrite; and the balance of water. According to the formula of the high-sulfur-content mining emulsion explosive and the production process method thereof, the negative image of urea on the aqueous phase of the emulsion explosive is eliminated, the bottleneck problem of 5-hour shutdown adjustment detection is solved, the operation time is greatly prolonged, continuous construction operation is greatly facilitated, the construction operation time cost and the labor cost are reduced, and the production efficiency is improved. And the construction operation efficiency is obviously improved. Therefore, the processing property of the high-sulfur-content emulsion explosive for the mine has qualitative leap, and the use scene is rapidly expanded.

Description

technical field [0001] The invention relates to a formulation of an emulsion explosive and a preparation method thereof, in particular to a high-sulfur-containing mineral emulsion explosive and a production process method thereof. Background technique [0002] The ore body of copper ore has high sulfur content. Because the emulsion explosive directly contacts the blast hole (ore rock powder), it is easy to produce a chemical exothermic reaction, causing spontaneous combustion in the high sulfur area. In response to this problem, it is proposed to add a certain amount of urea to the emulsion explosive to become an anti-self-ignition emulsion explosive. However, in the production of emulsion explosive water phase, due to the addition of urea, the crystallization point and pH value of the water phase production process parameters will change with time, which will seriously affect the quality of the explosive, resulting in a sharp drop in the detonation speed of the emulsion exp...

AI Technical Summary

Problems solved by technology

With the addition of urea, the crystallization point of the water phase will decrease, and the pH value will become higher, and as time goes on, the change will become larger and larger. After the prepared water phase is stored for 5 hours, the pH value will reach above 4.0. The crystal point is still within the qualified range, but it will also lead to a significant decline in the quality of the explosive and a decrease in the detonation velocity; after 20 hours, the pH value will reach above 5.4, and the crystallization point will drop to unqualified. The detonation velocity of the emulsion explosive produced by the water phase is 3886m Below / s, unqualified, even can’t detonate

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