Utilization of Coal Ash through the Slag Tap Furnace

Abstract

From the view point of utilization of coal ashes, the production of various by-productsash-cement, ash-wool and fused phosphate-is undertaken through a small test furnace of a slag-tap firing type. Further described here are the test results and some consideration about the industrial procedure in the future. These by-products, in their qualities, are comparatively inferior to the like products on the market. They are, however, economically valuable from the point of utilizing the very wastes-coal ashes-as raw materials. The purpose of applying both sintering and quality-control furnaces for the production of cement and wool lies in eliminating the trouble caused by the load variation unavoidable in the practical boiler operation, and also lies in improving the quality of the by-products themselves. These auxiliary-furnaces, in the present level of development in the fields of industries, are considered the very useful measures for the realization of them in their industrial scale.