processing area the trials were carried out in the pit which was almost full before starting experiment the entire set up including gas collection tank 11 and condenser tank 7 were evacuated using vacuum pump 13 the pressure in the tank was monitored using the compound gauge 15 attached to condenser tank 7 once compound gauge registered u2212 500 mm reading the set up i e tanks were isolated by closing valves 6 12 17 and 18 after slag was poured in the pit by crane the experimental set up as shown in fig3 mounted on the trolley 24 was moved close to slag pit by using tractor when trolley with set up reached to the marked area first the flux containing carbonaceous material was sprayed on the molten slag surface by using polythene container bags then the reaction hood 2 was lowered using chain pulley block system 23 and placed on the hot slag surface for positive isolation from surrounding atmosphere high temperature ceramic fibre wool 25 was fixed on the edge of reaction hood 2 after placing of the hood 2 on the slag surface the water inlet valve 20 was opened and water flow was monitored through flow indicator 21 connected to the water inlet line the water was then sprayed uniformly on the surface of the molten slag by water nozzle 26 the product gases were formed by reactions between water slag flux as described earlier immediately after opening the water inlet valve 20 the gas blower 22 was switched on and valve 19 was opened to remove the air and steam from the gas pipe line once product gas with steam started coming out from the exhaust pipe of the blower 22 the valve 19.