Abstract: In view of the problems of environmental protection pressure and high production cost in Lilou Iron Mine specularite flotation exposed when using heating flotation reagent.The concentrator has carried out a series of new processes,the application of new equipment and process optimization transformation,which provides the necessary conditions for the use of room temperature flotation reagents.On the basis of repeated tests and optimization of various agents,Anshan TD collector was finally selected,which reduces the temperature of flotation pulp from above 35 ℃ to 16 ℃.The annual heating cost of natural gas can be saved 8 million yuan under the condition of slightly better production index and slightly lower chemical cost,and the environmental benefit is significant,which has certain reference significance for similar domestic concentrators.

Key words: Specularite,Room temperature flotation,New process,New equipment,Reducing cost and increasing benefit.