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Thermal expansion stone cracking agent

A rock cracking agent and thermal expansion technology, applied in the intersection of material science and new energy, can solve the problems of low efficiency, environmental pollution, long rupture time, etc., and achieve the effect of high efficiency, low sound and good product quality.

Active Publication Date: 2015-10-07
BEIJING INSTITUTE OF TECHNOLOGYGY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a thermal expansion rock cracking agent in order to solve the problems of long cracking time, low efficiency and environmental pollution of the existing rock cracking agent products

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] A heat-expandable stone-cracking agent, comprising coal powder, coal gangue powder, calcium peroxide powder, potassium perchlorate powder and corncob powder, the mass ratio of which is 25:28:28:10:9;

[0046]A preparation method of thermal expansion rock cracking agent, the specific steps are as follows:

[0047] Step 1, the quality is 5.0kg of coal powder, 5.6kg of coal gangue powder, 1.8kg of corn cob powder, 5.6kg of calcium peroxide powder and 2.0kg of potassium perchlorate powder, mix evenly to obtain a mixed powder with a particle size of 100 mesh ;

[0048] Step 2. Add starch glue to the mixed powder obtained in Step 1; after stirring evenly, knead and knead until it is dough-like, and squeeze the dough on one side of a 20-mesh copper sieve, and the dough will be in thin strips under the action of extrusion Continuously passing through the copper sieve, the thin strips will automatically break when the length reaches 1.5cm. After passing through the copper sieve...

Embodiment 2

[0056] A heat-expandable rock-cracking agent, comprising coal powder, coal gangue powder, calcium peroxide powder, and potassium perchlorate powder in a mass ratio of 33:27:32:8 in sequence;

[0057] A preparation method of thermal expansion rock cracking agent, the specific steps are as follows:

[0058] Step 1, quality is the coal dust of 33kg, the coal gangue powder of 27kg, the calcium peroxide powder of 32kg and the potassium perchlorate powder of 8kg, mix homogeneously, obtain the mixed powder of particle diameter 100 purposes;

[0059] Step 2. Add starch glue to the mixed powder obtained in Step 1; after stirring evenly, knead and knead until it is dough-like, and squeeze the dough on one side of a 20-mesh copper sieve, and the dough will be in thin strips under the action of extrusion Continuously passing through the copper sieve, the thin strips will automatically break when the length reaches 1.2-1.5cm. After passing through the copper sieve, the thin strips will not...

Embodiment 3

[0067] A heat-expandable stone cracking agent, including coal powder, coal gangue powder, calcium peroxide powder and sawdust powder, the mass ratio of which is 25:22:45:8;

[0068] A preparation method of thermal expansion rock cracking agent, the specific steps are as follows:

[0069] Step 1, the coal powder that quality is 25kg, the coal gangue powder of 22kg, the calcium peroxide powder of 45kg, the sawdust powder of 8kg, mix homogeneously, obtain the mixed powder of particle size 100 meshes;

[0070] Step 2. Add starch glue to the mixed powder obtained in Step 1; after stirring evenly, knead and knead until it is dough-like, and squeeze the dough on one side of a 20-mesh copper sieve, and the dough will be in thin strips under the action of extrusion Continuously passing through the copper sieve, the thin strips will automatically break when the length reaches 1.5cm. After passing through the copper sieve, the thin strips will not stick to each other. After the thin stri...

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Abstract

The invention relates to a thermal expansion stone cracking agent, and belongs to the material science and new energy crossing field. The granular thermal expansion stone cracking agent is obtained through the following steps: weighing solid powders with the particle size of 1-100[mu]m according to a formula, uniformly mixing to obtain a powder mixture, adding starch gum into the powder mixture, uniformly stirring, kneading until dough with moderate hardness is obtained, and granulating. The prepared stone cracking agent is granular in shape, is convenient for filling in boring, can meet filing density requirements of cracked stones without tamping by using pneumatic picks, impact drills or special tools, and has the advantages of small stone cracking sound, fast speed, high efficiency, avoiding of water resource wastes and land surface pollution due to no use of water as a reaction raw material, clean use process, and simple, safe and convenient use operation; obtained products have good quality, and are safe and stable to store; the production process of the stone cracking agent has no emission of three wastes, is harmless to human body and environment, and is clean and environmentally-friendly; and the use process of the stone cracking agent is free from water, and is environmentally-friendly, and required raw materials have wide sources, so the economic cost is low.

Description

technical field [0001] The invention relates to a thermal expansion rock cracking agent, which belongs to the intersection field of material science and new energy. Background technique [0002] Explosives for mines are an essential and important part of the mine production process. They have always occupied a dominant position in mine excavation in the past and are widely used in road construction and water conservancy projects. But at the same time, there are many problems in mining explosives. For example, slurry explosives have defects such as toxic and harmful components, short storage period, and low detonation sensitivity; emulsion explosives generally have low weight, power, and high cost. , high viscosity, difficulty in manual charging and other practical problems; traditional and clumsy mining explosives also generally have shortcomings such as high labor intensity, low work efficiency, waste of resources, poor safety and environmental pollution. [0003] With the...

Claims

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Application Information

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IPC IPC(8): C04B26/28
Inventor 刘吉平韩钊武刘晓波苏岩毕晓露
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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