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Composite oil phase for explosive latex matrix and on-site mixed explosives, preparation method

A latex matrix and on-site mixing technology, which is applied to explosives, non-explosive/non-thermic components, offensive equipment, etc., can solve the problems of unsatisfactory remote distribution, repeated pumping, high viscosity of latex matrix, and high cost of raw materials, and achieve Improved sensitization effect, low kinematic viscosity, and simplified ingredients

Active Publication Date: 2021-06-18
HONGDA MINING IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cost is high, the viscosity of the produced latex matrix is ​​relatively high, and the pumping pressure of the on-site mixing truck is relatively high, usually up to 1.2MPa, which poses certain safety hazards
[0004] (2) Some existing production enterprises have improved the formulation of mixed emulsified explosives on site. The oil phase material uses 0# diesel oil to replace the composite wax in the original formula. Although the viscosity of the matrix is ​​reduced to a certain extent, the volatility of diesel oil is relatively low. Large, the general storage period is only 4 to 5 days, which cannot meet the requirements of remote distribution, repeated pumping, and mine blasting preloading
[0005] (3) At present, in the domestic on-site mixed emulsified explosive water phase formula, because the water content generally does not exceed 12%, sodium nitrate is added to the water phase formula, and the cost of raw materials is relatively high

Method used

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  • Composite oil phase for explosive latex matrix and on-site mixed explosives, preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] The preparation of embodiment 1 composite oil phase

[0051] Compound oil phase 1: Take 22.5kg of SP-80, 20.5kg of 150N base oil, and 22kg of 70N base oil, mix and stir evenly, put them into the oil phase storage tank and stir, and keep at 55-60°C to get Compound oil phase 1.

[0052] Compound oil phase 2: Take 6kg of SP-80, 6kg of polyisobutylene succinate amine, 38kg of 150N base oil, and 15kg of 10# white oil, mix and stir evenly, put them into the oil phase storage tank, and keep at 55 ~60°C to obtain the compound oil phase 2.

Embodiment 2

[0053] The preparation of embodiment 2 emulsion explosives

[0054] (1) Water phase preparation: Add 200kg of water to the water phase dissolution tank, stir and add 735g of ammonium nitrate, heat to keep the temperature at 75-80°C, filter to the storage tank, and keep the temperature at 75-80°C, that is For the water phase, add an appropriate amount of citric acid to the water phase to adjust the pH value of the water phase to between 2.5 and 3.5, use pH test paper to judge, and the color can be between 2.5 and 3.5 in the pH test paper.

[0055] (2) Emulsification: The water phase prepared in step (1) and the compound oil phase 1 prepared in Example 1 are metered and pumped by a screw pump, and the water phase and the oil phase are pumped into the mixture according to the mass ratio of 93.5:6.5. The static emulsifier performs emulsification to form a latex matrix, and the outlet temperature of the latex matrix is ​​75-80°C.

[0056] (3) Loading (first pumping): the latex mat...

Embodiment 3

[0060] The preparation of embodiment 3 emulsion explosives

[0061] (1) Water phase preparation: Add 200kg of water to the water phase dissolution tank, stir and add 735g of ammonium nitrate, heat to keep the temperature at 75-80°C, filter to the storage tank, and keep the temperature at 75-80°C, that is For the water phase, add an appropriate amount of phosphoric acid to the water phase, adjust the pH value of the water phase to between 2.5 and 3.5, use pH test paper to judge, and the color can be between 2.5 and 3.5 in the pH test paper.

[0062] (2) Emulsification: the water phase obtained in step (1) and the compound oil phase 2 prepared in Example 1 are metered and pumped by a screw pump, and the water phase and the oil phase are pumped into the static state according to the ratio of mass ratio 93.5:6.5 The emulsifier performs emulsification to form a latex matrix. The outlet temperature of the latex matrix is ​​75-80°C.

[0063] (3) Loading (first pumping): the latex m...

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Abstract

The invention provides a composite oil phase for explosive latex matrix, on-site mixed explosives and a preparation method. The compound oil phase includes 62-84% of paraffin-based neutral oil and 16-38% of emulsifier, which is easy to emulsify, has good emulsifying effect and stable quality. The present invention also provides a latex matrix formed by the compound oil phase and the water phase using a single salt phase formula. The latex matrix has good stability and strong anti-turbulence performance, and can meet the requirements of remote distribution, repeated pumping, Mine blasting pre-charge requirements; easy to disperse, suitable for redispersion and mixing of static mixers, and improve the sensitization effect. The invention also provides an on-site mixed explosive, the explosive has excellent explosive performance and low charge pressure, which greatly improves the safety of the charge process.

Description

technical field [0001] The invention belongs to the technical field of emulsion explosive manufacture, and in particular relates to a compound oil phase for explosive latex matrix, on-site mixed explosive and a preparation method. Background technique [0002] On-site mixing technology began to be studied in the late 1980s, and was successfully applied in Benxi Iron and Steel Nanfen Iron Mine in 1990, but it has been developing slowly. The current on-site mixed emulsion explosive production technology has the following problems: [0003] (1) On-site mixed emulsified explosive formula At present, most domestic emulsified explosive formulas have been applied mechanically, and the water content is relatively low, generally around 10%. The cost is high, the viscosity of the produced latex matrix is ​​relatively high, and the pumping pressure of the on-site mixing truck is relatively high, usually up to 1.2MPa, and there are certain potential safety hazards. [0004] (2) Some e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C06B23/00C06B31/28
Inventor 开俊俊谢守冬申卫峰孙伦奎倪浪乘刘峰
Owner HONGDA MINING IND
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