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

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...

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

Images