PROCESS FOR PRODUCING GRANULATED SLAG SAND AND APPARATUS FOR CARRYING OUT SAID PROCESS

摘要

PCT No. PCT/DE86/00124 Sec. 371 Date Dec. 2, 1986 Sec. 102(e) Date Dec. 2, 1986 PCT Filed Mar. 22, 1986 PCT Pub. No. WO86/05818 PCT Pub. Date Oct. 9, 1986.In order to reduce or avoid the discharge of gaseous pollutants H2S and SO2 to the environment in a process for the production of slag sand (granules) from blast-furnace slag by granulation of the slag by means of a water jet, the propulsion jet interspersed with water vapor, granules and pollutants is injected directly into a water receiver, the residual vapor still remaining and the pollutants H2S and SO2 not yet washed out are cooled down in a condenser in counter-current with spray water and condensed, and the residual gas remaining after the vapor condensation is taken off from the top end of the condenser and recycled via a recycle line back to the injector.