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Three-grade coal mine allowable emulsified explosive and preparation method thereof

A technology of emulsified explosives and coal mines, which is applied in the direction of explosives, etc., can solve the problems of high cost of raw materials, achieve the effects of simple production process, small flame, and reduce the amount of online storage

Active Publication Date: 2012-06-20
云南锐达民爆有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, Potassium Chloride is commonly used as a flame suppressant for emulsion explosives permitted in Class 3 coal mines in my country, but there is no Potassium Chloride manufacturer in Yunnan Province, and the cost of raw materials is relatively high.

Method used

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  • Three-grade coal mine allowable emulsified explosive and preparation method thereof
  • Three-grade coal mine allowable emulsified explosive and preparation method thereof
  • Three-grade coal mine allowable emulsified explosive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Raw materials are prepared according to the following weight percentages, namely: 66.5 parts of ammonium nitrate, 6.5 parts of sodium nitrate, 12 parts of sodium chloride, 9 parts of water, 2.5 parts of composite emulsifier, 3.0 parts of composite wax, 0.5 part of additive, wherein the composite wax is paraffin wax and The mixture of petrolatum, the weight ratio is 1:1, the additive is fatty alcohol, the production process operation steps:

[0029] (1) heating the mixture composed of ammonium nitrate, sodium chloride, sodium nitrate and water to 110°C to 130°C to dissolve to form an oxidizing agent solution, and filter;

[0030] (2) Heat the mixture composed of compound emulsifier, compound wax and additives to 90°C to 100°C to melt to form a combustible solution and filter;

[0031] (3) Use a metering pump to pump the oxidant water phase solution and the combustible oil phase solution into the static mixer for mixing, and then transport them into the first-stage emulsi...

Embodiment 2

[0038] Raw materials are prepared according to the following weight percentages, namely: 69 parts of ammonium nitrate, 7 parts of sodium nitrate, 8 parts of sodium chloride, 10 parts of water, 2.3 parts of composite emulsifier, 3.0 parts of composite wax, 0.7 part of additive, wherein composite wax is paraffin wax and The mixture of petrolatum, the weight ratio is 1:1, and the additive is fatty alcohol. Production process operation steps:

[0039] (1) heating the mixture composed of ammonium nitrate, sodium chloride, sodium nitrate and water to 110°C to 130°C to dissolve to form an oxidizing agent solution, and filter;

[0040] (2) Heat the mixture composed of compound emulsifier, compound wax and additives to 90°C to 100°C to melt to form a combustible solution and filter;

[0041] (3) Use a metering pump to pump the oxidant water phase solution and the combustible oil phase solution into the static mixer for mixing, and then transport them into the first-stage emulsifier fo...

Embodiment 3

[0049] Raw materials are prepared according to the following weight percentages, namely: 71 parts of ammonium nitrate, 5 parts of sodium nitrate, 8 parts of sodium chloride, 10 parts of water, 2.4 parts of composite emulsifier, 2.8 parts of composite wax, 0.8 part of additive, wherein composite wax is paraffin wax and The mixture of petrolatum, the weight ratio is 1:1, the additive is fatty alcohol, the production process operation steps:

[0050] (1) heating the mixture composed of ammonium nitrate, sodium chloride, sodium nitrate and water to 110°C to 130°C to dissolve to form an oxidizing agent solution, and filter;

[0051] (2) Heat the mixture composed of compound emulsifier, compound wax and additives to 90°C to 100°C to melt to form a combustible solution and filter;

[0052] (3) Use a metering pump to pump the oxidant water phase solution and the combustible oil phase solution into the static mixer for mixing, and then transport them into the first-stage emulsifier for...

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Abstract

The invention discloses a three-grade coal mine allowable emulsified explosive and a preparation method thereof. The explosive comprises the following materials, by mass, 66.5-75% of ammonium nitrate, 5-12% of sodium chloride, 3-7% of sodium nitrate, 9-11% of water, 2-2.5% of a composite emulsifier, 2.5-3.5% of composite wax, and 0.5-1% of an additive. The preparation method comprises the following steps: 1, respectively melting above water phase materials and oil phase materials through heating to form a water phase solution and an oil phase solution; 2, adding the water phase solution to the oil phase solution to form a water-in-oil mixture; 3, cooling the prepared mixture, and carrying out chemical sensitization foaming on the mixture to prepare the emulsified explosive; and 4, charging the emulsified explosive to obtain the finished emulsified explosive. The explosive of the invention, which can be applied to explosive engineering operations of excavating faces of high gas mines, excavating faces of high gas zones of low gas mines and excavating faces of outburst dangers of coal dust and the gas, has enough large explosive capacities on condition that the safety reaches indexes.

Description

technical field [0001] The invention belongs to a tertiary coal mine permitted emulsion explosive whose flame suppressant is mainly sodium chloride and a preparation method thereof. technical background [0002] Permissible emulsion explosives for Class 3 coal mines are widely used in coal mining blasting projects and play an extremely important role in the construction of the national economy. In view of the explosion characteristics of gas and coal dust, it is required that when designing the formulation of permitted explosives for coal mines, in addition to In addition to the explosive performance of explosives, special attention must be paid to the safety of the designed explosives when they explode. At present, Potassium Chloride is commonly used as a flame suppressant for emulsion explosives permitted in Class 3 coal mines in my country, but there is no Potassium Chloride manufacturer in Yunnan Province, and the cost of raw materials is relatively high. In the civil e...

Claims

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Application Information

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IPC IPC(8): C06B31/28
Inventor 李寿黎文国谭俊玲何杨东满荣乔
Owner 云南锐达民爆有限责任公司
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