Block stone disintegration method based on CO2 liquid-gas phase change

A crushing method and block stone technology, which is applied in the field of rock crushing, can solve the problems of less engineering quantity, impossibility of using blasting methods, and impossibility of using machinery, etc., and achieve the effect of less equipment, low cost and easy operation

Inactive Publication Date: 2016-08-10
湖南拓为工程科技有限公司
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  • Application Information

AI Technical Summary

Problems solved by technology

At this time, because of the small amount of engineering (such as the occasional rock in the construction), it is impossible to use the blasting method and it is impossible to use the mechanical method; or because the traffic is inconvenient (such as earthquake relief), the mechanical method cannot be approached at all and the mechanical method is abandoned. ,and many more

Method used

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  • Block stone disintegration method based on CO2 liquid-gas phase change
  • Block stone disintegration method based on CO2 liquid-gas phase change
  • Block stone disintegration method based on CO2 liquid-gas phase change

Examples

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Effect test

example 1

[0071] In an open-pit quarry in Hubei, the rock as a whole is weakly weathered limestone. The blasting parameters used in normal production are: drilling diameter 90mm, step height 20m, hole spacing 4m, row spacing 4.5m, two fully hydraulic crawler drilling rigs drilling, About 5,000 square meters are blasted every day, and the loader loads rocks.

[0072] The rocks after blasting in this quarry are generally large in size, with a maximum size of four meters square. Since the local safety supervision department does not allow the use of explosives for secondary crushing, hydraulic breakers can only be used to break rocks in the mine. The cost of stone crushing is relatively high, which is close to or even exceeds the cost of one blasting, and the efficiency is particularly low.

[0073] The use of rock crushing devices based on carbon dioxide phase transition can greatly reduce costs and improve efficiency. According to the operation of the first operation method, one drill d...

example 2

[0075] An earthquake in Sichuan caused a large number of landslides. The only rescue channel - a county-level road was washed away by a large number of stones. Huge boulders blocked the passage, and machinery could not enter to clear the obstacles.

[0076] The rock breaking device based on the carbon dioxide phase change can quickly break the rocks and quickly open the life channel. According to the second operation method, carbon dioxide filling is realized in a safe area, and it is manually carried into the landslide area, and each soldier carries three crushing devices at a time; two soldiers form a group, and one crushing device can be completed every 30 minutes The average crushing volume can reach five cubic meters, and about 120 cubic stone crushing tasks can be completed in 12 hours per day.

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Abstract

The invention discloses a block stone disintegration method based on CO2 liquid-gas phase change, belonging to the technical field of rock disintegration technology. According to the method, to-be-disintegrated block stone is subjected to measurement or ocular estimation so as to determine the basic shape and size of the block stone; hole arrangement can be adjusted according to practical situations, and the basic principle of hole arrangement is that one drill hole is arranged in each area with a size of eight cubic meters of the block stone; the drill holes are arranged to have vertical or slightly-oblique surfaces and arranged in the wider edges of the block stone as much as possible, and the depth of the holes is no more than two meters in principle; the step of filling of carbon dioxide can be carried out in any stage of previous three steps of the method as needed; high-pressure liquid carbon dioxide is injected into a pipe body via a filling machine; and during filling, it should be ensured that slag in the pipe body is removed at first and liquid carbon dioxide is used for cleaning and evacuating air in the pipe body. The method is reasonable in structural design; a few facilities are used and are convenient to carry and simple to operate, and a single person can finish all the operation; the method does not employ an explosive or mechanical way; good safety effect is obtained; the method does not produce flying stone, vibration and impact destroy and is low in cost; the facilities are repeatedly usable; high efficiency is realized; and operation flexibility is good.

Description

technical field [0001] The invention relates to the technical field of rock crushing, in particular to a CO-based 2 A rock crushing method of liquid-gas phase change. Background technique: [0002] For safety considerations, step blasting is mandatory in mine mining in my country, and step blasting technology has developed rapidly since then. In the application of mine bench blasting technology, a large number of large rocks are often produced; and the larger the borehole diameter is, the larger the rock mass will be blasted. For the crushing of large rocks from blasting, the commonly used methods include secondary blasting, mechanical crushing, and manual methods. Among them, the blasting method is very easy to cause flying stone hazards, and its safety is extremely poor, so it has been generally eliminated; the mechanical method mainly relies on hydraulic breakers, and its main disadvantages are high cost and low efficiency; while the manual method is extremely inefficie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B02C19/18
CPCB02C19/18
Inventor 李必红宋林辉辛燎原郭嘉严胜奇
Owner 湖南拓为工程科技有限公司
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