Application Study on Dry Magnetic Separation in Volatile Kiln Zinc Slag
|School||Henan Polytechnic University|
|Course||Mineral Processing Engineering|
|Keywords||Zinc volatile kiln Furnace slag Iron ore concentrate Coke Comprehensive Utilization Ore-dressing Dry magnetic separation|
Zinc volatile kiln slag is a common industrial solid waste in the metallurgical industry , Shaanxi Zinc Industry Co., Ltd. Shangluo Smelter furnace slag in the rich variety of valuable components , this paper aims to explore a dry magnetic separation new process , kiln slag clean , efficient and comprehensive utilization . X-ray diffraction , vibrating sample magnetometer and reflective microscope analysis showed that : the coke containing 26.5% iron , 12.7% and 31.8% quartz furnace slag . Wherein the iron is mainly present as oxides , sulfides, and a small amount of metallic state ; coke most monomer dissociation state is dispersed in a fine - grained kiln slag , a small amount of inclusions in the bulk kiln slag and coke particles, the micropores minerals adsorption. The analysis of the experimental results of the kiln the slag as is and comminution product : zinc volatile kiln slag is a medium can be broken ore and broken product particle size the meet the Rosin-Lamler distribution , magnetic material and coke were enriched with the coarse fraction and the fine fraction . The authors first conducted only a simple dry magnetic separation of iron recycling process experimental study , then presents a full grinding the magnetic separator closing iron closing charcoal process and the prescaler carbon comminution selection of iron processes two sets of sorting programs using electromagnetic roller magnetic separator the machine sorting kiln slag experimental iron concentrate grade and recovery rate between the mathematical model with feed particle size , magnetic field strength , and the selection of the number of times . Finalize the pre- addition to charcoal - stage comminution - phase of the election to the iron dry magnetic separation process , can be obtained a grade of 62.0% iron ore concentrate , the corresponding rate was 75.0 % , while 61.9% was recovered coke , solid waste emissions reduced by 43%. To meet the needs of industrial production , the development of a new type of magnetic separator . Fake magnets interval alternative method is designed to squeeze the the sector magnet stitching disk magnetic separation roller , then multiple magnetic separation roller series manufacture a CG2 multiple multi-roll permanent magnetic separator and through experiment verification.