METHOD FOR MANUFACTURING ROCK WOOL

摘要

PROBLEM TO BE SOLVED: To provide a method for manufacturing rock wool capable of simultaneously achieving the reduction in the diameter of fibers and the decrease of unfiberized parts. SOLUTION: In the method for manufacturing the rock wool which allows a melted body formed by using blast furnace slag as a main raw material and subjecting the same to compound regulation to flow down on a rotating body rotating at a high speed and splashes the melted body by utilizing the centrifugal force of the rotating body to fiberize, the melted body regulated in viscosity so as to attain <=14 poises at 1,400 deg.C and 300 poises in a range of 1,200 to 1,250 deg.C is used.