Features Item : New concepts in quarrying technology -
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Published on: 9/18/2001
Last Visited: 1/23/2004
These saws simplify the cutting procedures in a granite quarry, said Mark Eisenwinter of Granite City Tool Co."All you have to do is open a vertical and a horizontal hole with a drill, which should meet together so the diamond wire can be passed through," he said."According to a customer of ours, it is not very difficult to make the holes meet each other.Then, the stone can be cut.Usually, the face of the mountain is drilled, and the bottom is blasted.If the diamond wire saw is the vertical-horizontal type, however, it is feasible to cut the bottom by diamond wire saw as well, since the flywheel can be inclined to cut horizontally."
The Ogyu diamond wire saws can handle 2 square meters (22 square feet) of stone cutting per hour for hard white granite, and according to Eisenwinter, 5 square meters (54 square feet) are cut by one linear meter diamond wire for hard white granite, although this varies for the type of wire and the type of granite.
Granite City Tool Co. also distributes the PRS-80 hydraulic power rock splitter manufactured by Soo-Ho Industrial Co. of Korea."The hydraulic motor powers six 31-inch cylinders that produce between 950 and 1,235 tons of splitting force," said Eisenwinter."This model will split approximately 9 square meters of stone per hour."
According to the company, this system provides a safer means of splitting quarry stone than dynamite blasting and it meets the requirements for noise regulations."This is also one of the least expensive and most efficient ways to split stones from quarries," said Eisenwinter.
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