Sphalerite under microwave irradiation in the sulfate system with pyrolusite leaching kinetics simultaneously
 Currently, the world's use of " firing a leaching a purifying an electrowinning " process outputs Zinc Zinc Zinc cent of the world total of 78.59% . The shortcomings of the Act as follows:
  ( 1 ) Since a large number of calcine ZnO.Fe2O3, direct leaching of zinc is low ( 75% - 85% ) , need to be addressed leach residue , long production process .
 ( 2 ) using insoluble anodes electrolysis , the anode oxygen evolution , mist serious and wasted energy, one ton electrolytic zinc consumption reached 3100 degrees , and mist cause severe electric parse oxygen .
 Pyrolusite generic processes as " reductive roasting a leaching a purifying an electrolysis " process, the anode deposition 7 a Mnq, the shortcomings of the Act as follows:
  ( A ) reduction roasting temperature (1100 ℃ a 12000 ) . Consume large amounts of low- quality coal and manganese recovery ( 70% - 80% ) .
( 2 ) an inert cathode electrolysis, hydrogen can also lead to precipitation of acid mist serious one ton electrolytic MnO2, consumes up to 2500 degrees .
Sphalerite while leaching of manganese with a purge an electrolytic method, the leaching process, the zinc sulfide as a reducing agent , manganese dioxide as an oxidant in which iron ions promote the intense oxidation- reduction reaction , while the use of two raw phase
Interaction , the additive leaching is greatly reduced and Zn, Mn leaching rate; while the electrolytic obtained when pure electrolytic zinc anode , the anode can simultaneously output qualified manganese dioxide , to overcome the zinc electrolysis manganese alone cathodic oxygen evolution , the cathode hydrogen
Mist caused serious power consumption big disadvantage , so zinc , manganese leaching while an electrolytic method of purifying a more and more attention has been paid .
     1971 , Angelov first of Zn sulfate solution while an electrolytic Mn Yao briefly reported . Since 1983 , Bell bamboo ago , Professor Mei Guanggui series of metallic copper, zinc, nickel sulfide ore and manganese ore in acidic sulfate leach system, while an electrolytic process was studied extensively. Its conclusions as follows: ① with Sec while leaching , zinc, manganese leaching rates were 95% and 98% , three-stage leaching , zinc, manganese leaching rate of 98% and 99%; ② dip
The liquid by goethite after purification method and the replacement of two simultaneous electrolysis , the outputs of a payment zinc and a Mn02, than the individual electrolytic zinc and electrolytic MnO2 saving 61% , reduce acid mist 6 /7.
    In summary, although both sphalerite and pyrolusite leaching a purifying an electrolytic method has attracted people's interest, but researchers will have adopted the traditional heating method , microwave heating in sphalerite and pyrolusite Meanwhile leaching studies have not been reported. Conventional heating process, the leaching time was 3h-4h, even up to 5h, leaching time is longer, therefore , enhance the leaching process and shorten leaching time , to further reduce the energy consumption of practical significance .