Application of diamond wire saw cutting granite mine well

As is known to all, in marble mining process in the application of diamond wire saw for cutting marble is already very mature technology. However, after Italy Maruini Marini company project technology staff for many years of unremitting efforts, in the process of mining granite mines application of diamond wire saw for cutting granite

As is known to all, in marble mining process in the application of diamond wire saw for cutting marble is already very mature technology. However, after Italy Maruini Marini company project technology staff for many years of unremitting efforts, in the process of mining granite mines application of diamond wire saw cutting granite has become a reality. Combining traditional Chinese granite mining technology for vertical flame cutting and horizontal blasting method, thereby causing resource waste. In this paper, through comparison of the diamond wire saw cutting granite and traditional flame cutting method in production costs and technology, draw the application of diamond wire saw for cutting granite protection of resources exploitation and environmental protection will be the conclusion of our country mining granite mines a new technological revolution.

Production cost analysis and comparison:

To cut 10 meters high, 12 meters long, that is: 120 square meters of the section as an example

1, the diamond wire saw cutting granite section

Diamond beaded rope price: import rope around EUR 110 yuan / m, per meter of rope, the average life for 10-12 square meters; domestic rope about 600 yuan / m, per meter of rope, the average life for 8 square meters. The calculation shows that the average production cost: with imported rope for 9-11 euro / square meter, with the domestic rope for 75 yuan / square meter. Cutting speed of 2-4 square meters per hour. Cut 120 square meters of the production cost of the section: with the import rope for the euro 1080-1320, with the domestic rope for 9000 yuan. And the cutting seam is only 1.1 cm, almost no waste. A new generation of energy-saving Marini developed the "super large" diamond wire saw the total power is only 25 kilowatts.

2, the flame cutting granite section cutting machine

Flame cutting machine diesel consumption 40-50 liters of Diesel / hour, the domestic price of 4 yuan per liter of diesel, cutting speed of 1 square meters / hour. The calculation shows that the average production cost: 160-200 yuan / square meter. Cutting 120 square meters of production costs: 19200-24000 yuan. And cutting waste width of 25-30 cm, cutting 120 square meters of the section of a total waste of 30-36 cubic meters of stone.

Thus, from the cost analysis can be clearly seen, with diamond wire saw for cutting granite section of the cost is only by flame cutting machine to cut half of the cost of granite section.

Two, the technical characteristics of the analysis and comparison:

1, the diamond wire saw cutting granite section

Working principle is to use cycle is driven by a motor diamond beaded rope turning direct saw cutting of granite physical methods), sawing at the same time, to the kerf with plenty of water to cooling diamond and exclusion sawing the role of rock powder.

Cutting speed 2-4 square meters per hour.

Cutting depth of up to 10-20 meters or even deeper, cutting cross section can be a 90 degree angle.

Cutting way: vertical direction, horizontal direction, turn 90 degree direction, "blind cut" way.

Reduce the waste of resources, only a 1.1 cm gap.

Has the advantages of no noise, no dust, safe and reliable operation, high yield, regular blocks without internal timber produced rate is high, the market price higher. Applicable to all kinds of granite mines.

2, the flame cutting granite section cutting machine

Working principle is using high temperature flame flow temperature 15 degrees, speed of 340 meters / seconds) shock melting granite quartz, with in rocks of different mineral thermal expansion coefficient is different, resulted from rock sudden potential broken, flaking, debris, are high speed air flow to blow away, to cut granite.

Cutting speed is about 1 square meters per hour.

The cutting depth is limited only to 4-6 meters, and the cutting section can not form a 90 degree angle, left half dead 1-2 meters.

Cutting way: generally only in vertical direction, for cutting trench trench) to create a free surface.

Greater waste of resources, about a waste of 25-30 cm wide stone.

With a tremendous noise and 130 dB), dust, operation risk big, low yield, blocks not all internal materials out of the low rate, the market price is low characteristic. Only applicable to high quartz content, less fractured granite mines, it has some limitations.

To sum up, from the protection of resources exploitation and environmental protection ideas and technical and economic analysis results of the diamond wire saw for cutting granite mining granite mines in China is imperative.