Introduction to the Development of CO2 rock Blasting
CO2 rock blasting began in 2013 and began to develop in Yantai, Shandong, China. It is a new blasting method developed specifically for coal mining faces in high-gas mines to avoid explosion accidents caused by flames generated by explosive blasting. CO2 rock Blasting is also known as gas expander, CO2 blasting, and CO2 gas expander. Gas blasting equipment uses liquid nitrogen dioxide (currently CO2 gas is relatively safe and easy to buy in the market at a low price; CO2 is often selected as a blasting auxiliary material) to vaporize and expand when heated, quickly release high-pressure gas to break and loosen rocks, and solve the shortcomings of blasting mining, such as high destructiveness, high danger, and high dust, and provide favorable help for safe mining and loosening of mines. It is widely used in various mines (stone mines, iron mines, coal mines, gold mines, etc.), tunnels, tunnels, trenches, road construction, permafrost loosening and other projects. CO2 blasting: no strict approval is required, easy to use; low noise, reducing the impact on surrounding residents; environmentally friendly, reducing environmental pollution; reducing the risk factor, high safety; avoiding ore body crushing, improving stone utilization rate; the device can be reused, saving costs.
Main components
Liquid CO2 gas tank, filling machine, fracturing pipe, filling table, pipe rack, tightening machine
CO2 blasting, CO2 blaster, CO2 blasting equipment, CO2 blasting technology
Basic parameters of CO2 blaster (CO2 blasting)
Fracturing pipe life: about 1000 times
Model: 95-108
Drilling requirements: 115-120mm Drilling depth: 4 meters Drilling hole spacing: within 3 meters (depending on the construction environment and ore structure) Edge thickness: within 3 meters (depending on the construction environment and ore structure) Fracturing pipe length: 1.2 meters Standard configuration: 50 fracturing pipes (120 pipes are recycled and the estimated volume is about 6000-7000 cubic meters) What is the cost per ton per cubic meter of CO2 blasting? Let me say that CO2 is suitable for mines that cannot approve explosives. The cost is higher than that of explosives, but the power is not as good as that of explosives. The pure blasting cost of CO2 blasting tube per ton is about 1.5-3 yuan. Pure blasting does not include drilling and secondary crushing. It is mainly divided into factors such as stone quality, working face, grain direction, and the presence or absence of faults.
