Penggunaan Bahan Bakar Alternatif dalam Industri Semen

Abstract

One of the various ways to utilize coal ash from either industrial- or power generation (utility) boilers in form of bottom ash and fly ash is brickmaking.
An applied research was accomplished successfully for use of bottom ash in form of clinker from the stoker boiler of utility plant at Sijantang village, Sawahlunto town, for making building brick from the coal ash and clay usually used by the people brick industry for purpose of developing local industry and other areas. The experimental programme for this research was designed in such a way that an optimum mix composition of clay and coal ash at a certain ratio can be achieved according to the quality requirement of building brick Indonesian standard. The product of coal ash building brick at the optimal mix composition was achieved at  a ratio of 80% Clay/20% Coal Ash.