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Bulk waterproof emulsion explosive and preparation method thereof

The technology of emulsion explosive and polymer emulsifier is applied in the field of bulk waterproof emulsion explosive and its preparation, and can solve the problems of large fluctuation of emulsion stability of composite oil phase and unstable quality of bulk emulsion explosive.

Active Publication Date: 2012-09-19
ANSTEEL GRP MINING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the different quality ratios of raw materials selected by each explosives factory, the emulsion stability of the prepared composite oil phase fluctuates greatly, and the quality of the bulk emulsion explosives produced is unstable.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0085] The preparation method of ester polar polyfunctional macromolecule emulsifier is:

[0086] 100.0g of polyisobutylene fumaric acid (number-average molecular weight = 986), 3.2g of KOH aqueous solution with a concentration of 30wt% and 100.4g of HOCH 2 CH 2 O(CH 2 -CH 2 O) 10 CH 2 CH 2 Mix OH evenly, heat and evacuate, perform esterification reaction at 160°C and -0.08MPa for 5 hours, then cool down to 100°C, add 96.2g of sodium dodecylsulfonate aqueous solution with a concentration of 40wt%, and then keep the temperature at normal pressure React for 1 hour to obtain the product. Kinematic viscosity (100°C): 1618.5 mm2 / s; acid value (mg KOH / g) 25.3;

Embodiment 1～2

[0087] Embodiment 1~2 composite oil phase, is made of the raw material component of following weight part:

[0088] Base oil MVI 33.5

[0089] Liquid paraffin 39.5.

[0090] Ester polar multifunctional polymer emulsifier 20.0

[0091] Soy Lecithin 4.5

[0092] Monolaurate Glyceride 1.5

[0093] Isodecanol ethoxylates 1.0

Embodiment 3～4

[0094] Embodiment 3~4 composite oil phase is made of the raw material component of following parts by weight:

[0095] Base oil MVI 39.0

[0096] Liquid paraffin 34.0

[0097] Ester polar multifunctional polymer emulsifier 20.0

[0098] Soy Lecithin 4.5

[0099] Monolaurate Glyceride 1.5

[0100] Isodecanol ethoxylates 1.0

[0101] The preparation method of embodiment 1~4 composite oil phase:

[0102] a. Add base oil MVI and liquid paraffin into the reaction kettle according to the ratio of the raw material formula, and stir at 40-42°C for 10 minutes to prepare a fuel oil mixture;

[0103] b. Open the agitator under normal pressure, add ester polar multifunctional macromolecular emulsifier, soybean lecithin, monoglyceride laurate, and isomeric decanol polyoxyethylene ether in sequence according to the ratio of the raw material formula. It is prepared by stirring at 90-100°C for 30 minutes, adding fuel oil mixture and stirring at 100-110°C for 20 minutes.

[0104] The pr...

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PUM

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Abstract

The invention relates to bulk waterproof emulsion explosive and a preparation method thereof. The bulk waterproof emulsion explosive comprises the following materials in parts by weight: 65-85 parts of ammonium nitrate, 0-12 parts of sodium nitrate, 12-19 parts of water, 0.02-0.06 part of thiourea, 0.01-0.02 part of sodium carbonate, 0.04-0.08 part of acetic acid, 5-7 parts of composite oil phase and 0.06-0.12 part of sodium nitrite, wherein the composite oil phase comprises the following materials in parts by weight: 31-41 parts of base oil MVI, 32-42 parts of liquid paraffin, 20-23 parts of ester polar polyfunctional high-molecular emulsifying agent, 3.5-5.5 parts of soya bean lecithin, 1-2 parts of glycerol monolaurate and 0.5-1.5 parts of isomeric alcohol ethoxylates. The composite oil phase enables a water phase to be emulsified quickly under the condition that the linear velocity is less than or equal to 5.52m / s (less than or equal to 500r / min), and has the safety performance; the prepared latex matrix has the advantages of stability, water resistance, bumpiness resistance and proper viscosity, the storage period is more than one year, the water resistance period is more than three months, and the transportation radius is more than 300km; and the explosive velocity of the emulsion explosive in holes is 5800-6000m / s, and various blasting indexes are superior to the national standard of emulsion explosive.

Description

technical field [0001] The invention relates to the field of industrial explosives, in particular to a bulk waterproof emulsion explosive and a preparation method thereof. Background technique [0002] Since the advent of emulsion explosives, it has been widely used in engineering blasting because of its good blasting performance, safety performance and water resistance. Emulsion explosives belong to a non-thermodynamically stable system. The saturated aqueous solution of inorganic oxidant salts dispersed in the continuous phase, that is, the composite oil phase, exists in the form of tiny droplets, which are very easy to aggregate, crystallize, demulsify, and improve the stability of emulsion explosives. This is the research field. Basic problems to be solved urgently. Most domestic explosives factories use the continuous mixed loading process to produce bulk emulsion explosives. The explosive formula raw materials are: ammonium nitrate, sodium nitrate, water, thiourea, ni...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06B31/28
Inventor 宋仁峰周仁杰王忠红徐锦海赵亮潘明伟全名巍郭客
Owner ANSTEEL GRP MINING CO LTD
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