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A thermal expansion 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 long rupture time, low efficiency, environmental pollution, etc., and achieve the effect of good product quality, high efficiency and low sound.

Active Publication Date: 2017-01-25
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 thermal expansion stone cracking agent, comprising coal powder, coal gangue powder, calcium peroxide powder, potassium perchlorate powder and corn shaft powder, with a mass ratio of 25:28:28:10:9;

[0046] A method for preparing thermal expansion stone cracking agent, the specific steps are as follows:

[0047] Step 1. Mass is 5.0kg coal powder, 5.6kg coal gangue powder, 1.8kg corn shaft powder, 5.6kg calcium peroxide powder and 2.0kg potassium perchlorate powder, and mix well 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 mixing, knead and knead until it is dough-like. Extrude the dough on the side of a 20-mesh copper sieve, and the dough will become thin strips under the action of extrusion Continuously pass through the copper sieve. When the length of the thin strip reaches 1.5cm, it will be automatically disconnected. After passing through the copper sieve, the thin strips will n...

Embodiment 2

[0056] A thermal expansion stone cracking agent, including coal powder, coal gangue powder, calcium peroxide powder, potassium perchlorate powder in mass ratios of 33:27:32:8;

[0057] A method for preparing thermal expansion stone cracking agent, the specific steps are as follows:

[0058] Step 1. The mass is 33kg of coal powder, 27kg of coal gangue powder, 32kg of calcium peroxide powder and 8kg of potassium perchlorate powder, mixed uniformly to obtain a mixed powder with a particle size of 100 mesh;

[0059] Step 2. Add starch glue to the mixed powder obtained in Step 1. After mixing, knead and knead until it is dough-like. Extrude the dough on the side of a 20-mesh copper sieve, and the dough will become thin strips under the action of extrusion Continuously pass through the copper sieve. The strips are automatically disconnected after the length reaches 1.2~1.5cm. After passing through the copper sieve, the strips do not adhere to each other. After the strips fall vertically at...

Embodiment 3

[0067] A thermal expansion stone cracking agent, including coal powder, coal gangue powder, calcium peroxide powder and sawdust powder, the mass ratio is 25:22:45:8;

[0068] A method for preparing thermal expansion stone cracking agent, the specific steps are as follows:

[0069] Step 1: 25kg of coal powder, 22kg of coal gangue powder, 45kg of calcium peroxide powder, and 8kg of sawdust powder are mixed uniformly to obtain a mixed powder with a particle size of 100 mesh;

[0070] Step 2. Add starch glue to the mixed powder obtained in Step 1. After mixing, knead and knead until it is dough-like. Extrude the dough on the side of a 20-mesh copper sieve, and the dough will become thin strips under the action of extrusion Continuously pass through the copper sieve. When the length of the thin strip reaches 1.5cm, it will be automatically disconnected. After passing through the copper sieve, the thin strips will not stick to each other. After the thin strips fall vertically at a height o...

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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 stone cracking agent, which belongs to the cross field of material science and new energy. Background technique [0002] Mining explosives are an indispensable and important link in the production process of mines. In the past, they have always occupied a dominant position in mining and are widely used in road construction and water conservancy projects. But at the same time, mining explosives have many problems. For example, slurry explosives contain toxic and harmful components, short storage period, and low initiation sensitivity. Emulsion explosives generally have low weight and high cost. , High viscosity, difficulty in manual charging, and other practical problems; traditional and clumsy mining explosives also generally have disadvantages such as high labor intensity, low work efficiency, waste of resources, poor safety and environmental pollution. [0003] With the development of science and technology and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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