Roasting Test of Alkaline Pellets Produced by Iron Ore Powder with High Ferrous Content in an Enterprise
In order to efficiently use the iron ore powder with high ferrous content to produce alkaline pellets,based on the detailed study of mineral characteristics,the preheating roasting test and the character-istics of the alkaline ball solidarity circle are studied.The results show that the increase of basicity has no ob-vious effect on the preparation system and drying system of green pellets of iron ore powder with high ferrous content.The suitable roasting system is that the basicity is 0.3～1.0,the roasting temperature is 1 250℃,and the roasting time is 6～10 min.The pellets produced at the basicity of 0.8 should be avoided to avoid the occurrence of pellets with high expansion rate.At the same time,it is proposed that the SiO2 content of iron ore powder and the fineness of limestone powder should be controlled to inhibit the ring formation of rotary kiln.
high ferrous ironiron ore powderring formationalkalinityreduction expansion
万方数据
维普
