Optimization Of Mineral Processing Technology And Equipment Of Magnetite With High Hardness And Automatic Control

Starting in 2013,TFe65% price of iron ore from domestic high 1200 Yuan/ton to 450 Yuan/ton low levels,influenced to mine greatly.Coupled with its many deficiencies,mineral processing technology is imperative.Sedimentary rocks in mountain iron mine ore,Ore hardness values between F22-32,belonging to the machining high hardness minerals.Original design processed ore 2.4 million t/a,iron concentrate grade TFe65%,59.71% metal recovery,general election is 4.09,consolidated tailing grade <TFe14.19%,magnetic iron < 1%,annual output of iron concentrates 586,800 t.Practical capacity of 1.8 million t/a,metal recovery 56.1%,general election is 4.15,consolidated tailing grade TFe16.3%,tailings from magnetic iron content exceeding 1.5%.Annual concentrate 434,000 tons,the datas are unable to suit to the design demands.the datas are unable to suit to the design demands.The dressing process optimization and automation technology upgrade,make the best of the current base and practical experience,to save investments and to the principle of efficient and reliable,spent less in running.New design retains the original three stage one closed circuit and dry production process,replacing cone Crusher broken core equipment,increasing the 4# belt conveyor capacity,increased screening equipment,magnetic seasoned strong adjustment,classification,the dehydration process for fine tuning,optimization and upgrade of automated controls.Complete mineral ore handling capacity > 2.4 million t/a,tons of concentrate processing costs can be reduced by 20 Yuan and calculate total payback period of 1.67.The optimization of automatic control system of beneficiation process equipment,changes in mountain iron mine in the market to survive and develop wide range of application in mine of the same type,for mine development and innovation to the market to provide a reference base.