An electric furnace slag proportioning device and its application in cement preparation.

Abstract

This invention discloses an electric furnace slag proportioning device and its application in cement preparation. The device includes a crusher, an iron remover, and a drying chamber arranged sequentially along the conveying direction. The drying chamber contains a reciprocating heating assembly driven by a motor and a belt-slip mechanism. A weighing conveyor belt with a gravity sensor is connected to the end of the device. This application utilizes the above-mentioned device for pretreatment and dynamic metering of electric furnace slag, and precisely adds a composite additive containing triisopropanolamine, sodium thiosulfate, and gypsum dihydrate powder during the proportioning process, followed by mechanochemical grinding. This invention ensures uniform drying of the material through dynamic drying and utilizes a composite activator to chelate the iron phase on the surface of the electric furnace slag and activate the crystal lattice, solving the problems of low activity and poor grindability of electric furnace slag, and significantly improving the early strength and resource utilization rate of cement.

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