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A rock-breaking powder column and its preparation method

A technology of grain and rock breaking, applied in the field of rock breaking grain and its preparation, can solve the problems of unsafe production, transportation, use, environmental pollution, large vibration, etc. safe effect

Active Publication Date: 2018-08-21
ANHUI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above technical problems, the object of the present invention is to provide a rock-breaking powder column to solve the problems of excessive vibration, generation of toxic gas, dust, environmental pollution, unsafe production, transportation and use during blasting operations in cities.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A rock-breaking powder column, which is composed of a cracking agent, a swelling agent and an electrolyte solution, in terms of mass percentage, the cracking agent is 30%, the swelling agent is 50%, and the electrolyte solution is 20%;

[0027] Described cracking agent is made up of oxidizing agent, combustible agent and bonding agent, and described oxidizing agent is potassium nitrate, and described combustible agent is coal powder, and described bonding agent is peach gum, by weight: potassium nitrate 80 parts, coal powder 15 parts, 5 parts peach gum;

[0028] The expansion agent is a market expansion agent, and the expansion agent can react with the electrolyte solution and absorb toxic gas to generate a substance with expansion effect;

[0029] The electrolyte solution is sodium chloride solution.

[0030] The preparation method of the rock-breaking powder column described in this embodiment comprises the following steps:

[0031] (1) Preparation of cracking agent...

Embodiment 2

[0035] A rock-breaking powder column, composed of a cracking agent, a swelling agent and an electrolyte solution, in terms of mass percentage, the cracking agent is 45%, the swelling agent is 40%, and the electrolyte solution is 15%;

[0036] Described cracking agent is made up of oxidizing agent, combustible agent and bonding agent, and described oxidizing agent is potassium nitrate, and described combustible agent is coal powder and aluminum powder, and described bonding agent is peach gum, by weight: 75 parts of potassium nitrate , 15 parts of coal powder, 5 parts of aluminum powder, 5 parts of peach gum;

[0037] The swelling agent is a metal compound, and the metal compound is a mixture of alumina and magnesium oxide. The swelling agent can react with the electrolyte solution and absorb toxic gas to generate a substance with swelling effect;

[0038] The electrolyte solution is calcium hydroxide solution.

[0039] The preparation method of the rock-breaking powder column...

Embodiment 3

[0044] A rock-breaking powder column, composed of a cracking agent, a swelling agent and an electrolyte solution, in terms of mass percentage, the cracking agent is 32%, the swelling agent is 50%, and the electrolyte solution is 18%;

[0045] The cracking agent is made up of oxidizing agent, combustible agent and binding agent, and described oxidizing agent is potassium nitrate and barium nitrate, and described combustible agent is aluminum powder, and described binding agent is peach gum, by weight: 35 parts of potassium nitrate , 35 parts of barium nitrate, 25 parts of aluminum powder, 5 parts of peach gum;

[0046] The swelling agent is a metal compound, and the metal compound is a mixture of calcium oxide and ferric oxide. The swelling agent can react with the electrolyte solution and absorb toxic gas to generate a substance with swelling effect;

[0047] The electrolyte solution is sodium sulfate solution.

[0048] The preparation method of the rock-breaking powder colum...

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Abstract

The invention provides a rock breaking grain which is composed of a cracking agent, a swelling agent and electrolyte solution; the cracking agent is composed of an oxidizing agent, a combustible agent and a binder; the swelling agent is an expanding agent or metallic compound; and the electrolyte solution is one or a mixture of sodium chloride solution, calcium hydroxide solution, sodium sulfate solution and sodium hydroxide solution. The rock breaking grain can be widely used in urban blasting engineering, does not harm people or livestock, is small in blast vibration and safe to produce, transport and use and does not pollute the environment. Compared with other non-explosive blasting agent, the rock breaking grain has the advantages of being environment-friendly and pollution-free, more convenient and faster to use, relative high in blasting equivalent and stable in detonation. The invention further provides a preparation method of the rock breaking grain. The preparation method is small in danger coefficient, environment-friendly and simple to operate.

Description

technical field [0001] The invention belongs to the technical field of blasting engineering, and in particular relates to a rock-breaking charge and a preparation method thereof. Background technique [0002] In modern blasting engineering, most of them are still using explosives as energy output materials. The use of explosives has brought certain benefits, but there are generally problems such as excessive blasting vibration, toxic gas, dust, environmental pollution, and unsafe production and transportation. Especially in the blasting demolition in the city, the construction of bridges and roads, it is extremely unsafe to use explosives, and it will also cause urban pollution. For this reason, non-explosive blasting experiments have been carried out at home and abroad, and the representative one is the plasma blasting technology, but it has the disadvantages of too heavy equipment and a small blasting equivalent, which is not suitable for large-scale use. [0003] Theref...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C06B31/02C06B33/04C06B33/14
CPCC06B31/02C06B33/04C06B33/14
Inventor 谢兴华张小康周慧生谢君闫绍博
Owner ANHUI UNIV OF SCI & TECH