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Low-viscosity pumpable emulsion explosive substrate and preparation method thereof

An emulsion explosive matrix, low-viscosity technology, used in explosives and other directions, can solve the problems of inability to achieve long-distance transportation, reduced safety and reliability, large diameter of the output tube, etc. The effect of simple ingredients

Inactive Publication Date: 2015-04-15
QINGDAO TARGET MINING SERVICES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional emulsion explosive matrix has a viscosity of 25-40BU at 78-90°C, and a viscosity of 50BU or more at 0°C, which is very unfavorable for pumping. If pumping is used, it must provide 0.7 BU even at room temperature. The input pressure of Mpa requires a relatively high input pressure, and the diameter of the output drug tube is also large, which cannot realize long-distance delivery.
[0004] Due to the high input pressure, the safety and reliability of the system itself will inevitably be reduced, which in turn will bring the risk of pumping explosives

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Mix 79.9kg of ammonium nitrate, 0.122kg of thiourea, and 14.1kg of water at 80°C, adjust the pH value to 3.5 with sodium hydroxide and acetic acid, and measure the crystallization point of 70°C, and the turbidity of the solution is 0.8 NTU, add diatomite adsorbent to the solution, and filter through the coarse filter and the fine filter for 30 minutes in total to become a pure oxidant saline solution for later use; 0.89kg of LZ2820 polyisobutylene succinic anhydride emulsifier, 0.89kg of Span 80 , 6.22kg of paraffin oil was melted and mixed uniformly at 70°C to obtain an oil phase for later use; the oxidant salt solution and oil phase obtained above were emulsified in an emulsifier at 80°C to form a water-in-oil emulsion explosive matrix , after measurement, the viscosity is 15BU; 0.09kg of sodium nitrite, 0.09kg of sodium bicarbonate, and 2.62kg of water are configured into a sensitization liquid; After 15 minutes of sensitization at a temperature of 40°C, an emulsion ...

Embodiment 2

[0038] Mix 65kg of ammonium nitrate, 0.08kg of thiourea, and 14.6kg of water at 84°C and adjust the pH to 3.7 with sodium hydroxide and acetic acid. The crystallization point is 71°C and the turbidity of the solution is 0.9NTU. , add diatomaceous earth adsorbent in the solution, suction filter 30 minutes altogether through coarse filter, fine filter and become pure oxidant saline solution standby; With the LZ2745 polyisobutylene succinic anhydride emulsifier of 1.683kg, the Span 80 of 0.017kg, The mixture of 4.3kg of paraffin oil and engine oil (wherein, 2.3kg of paraffin oil and 2kg of engine oil) was melted and mixed uniformly at 80°C to obtain an oil phase for subsequent use; Under the condition of ℃, it is emulsified to form a water-in-oil type emulsion explosive matrix. After measurement, the viscosity is 18BU; 0.12kg of sodium nitrite, 0.14kg of sodium thiocyanate, and 2.94kg of water are configured into a sensitization liquid; the above emulsion explosive matrix and The...

Embodiment 3

[0042] Mix 76.5kg of ammonium nitrate, 0.184kg of thiourea, and 18.4kg of water at 90°C, adjust the pH value to 4.0 with sodium carbonate and acetic acid, the crystallization point is 71°C, and the turbidity of the solution is 0.8NTU , add diatomaceous earth adsorbent in the solution, suction filter 30 minutes altogether through coarse filter, fine filter and become pure oxidant saline solution standby; With the LZ2731 polyisobutylene succinic anhydride emulsifier of 0.84kg, the Span 80 of 0.42kg, The mixture of 3.75kg of paraffin oil and vegetable oil (wherein 2kg of paraffin oil and 1.75kg of vegetable oil) was melted and mixed uniformly at 75°C to obtain an oil phase for subsequent use; Under the condition of ℃, it is emulsified to form a water-in-oil type emulsion explosive matrix. After measurement, the viscosity is 20BU; 0.12kg of sodium nitrite, 0.1kg of sodium thiocyanate, and 2.78kg of water are configured as a sensitization liquid; the above emulsion explosive matrix ...

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Abstract

The invention relates to an emulsion explosive, and especially relates to a low-viscosity pumpable emulsion explosive substrate and a preparation method thereof. The emulsion explosive substrate is obtained through an emulsification effect of an oxidant salt solution and an oil phase. The oxidant aqueous solution comprises ammonium nitrate, thiourea, sodium carbonate and water. The oil phase comprises an oil content and an emulsification agent. The emulsification agent is a mixture of a polyisobutylene succinic anhydride emulsification agent and span-80. The low-viscosity pumpable emulsion explosive substrate provided by the invention has low viscosity, and can be delivered by using a piston pump or a screw pump at an input pressure of only 0.4MPa. The delivering distance can reach 50m, and an advantage of convenient delivery is provided.

Description

technical field [0001] The invention relates to emulsion explosives, in particular to a low-viscosity pumpable emulsion explosive matrix and a preparation method thereof. Background technique [0002] The traditional emulsion explosive matrix, in order to ensure that the explosive has an ideal explosive performance index, the water content is only about 13%. At the same time, a variety of raw materials are designed to ensure that the explosive has good explosive performance. The explosive performance meets the requirements. The viscosity of the emulsified matrix increases Large, high input pressure, especially in terms of bulk emulsion explosive matrix. [0003] The traditional emulsion explosive matrix has a viscosity of 25-40BU at 78-90°C, and a viscosity of 50BU or more at 0°C, which is very unfavorable for pumping. If pumping is used, it must provide 0.7 BU even at room temperature. The input pressure of Mpa requires a relatively large input pressure, and the diameter o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C06B31/28
Inventor 薛世忠
Owner QINGDAO TARGET MINING SERVICES
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