Graduate qualifying work Theme: Selection and calculating of zinc sulfate production technology

1.Enhanced the purification of alloys (copper, nickel and cobalt) in the solution.

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  1.Enhanced the purification of alloys (copper, nickel and cobalt) in the solution.
  
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  2.Cementation of the above metal ions that is precipitation in the form of salt.
  
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  3. The specific consumption during cementation is reduced.
  
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  4. Ensures efficient operation in the production of equipment.
  
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  The temperature pH environment plays an important role in making a zinc powder mixture.
  

In a zinc powder solution, silicic acid is in the form of a gel, which is removed from the pulp by filtration. Heavy particles make filtration difficult and contaminate the sediment.

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  In a zinc powder solution, silicic acid is in the form of a gel, which is removed from the pulp by filtration. Heavy particles make filtration difficult and contaminate the sediment.
  
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  1.Copper and cadmium are released during the first stage of cementation.
  
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  2. Medium voltage metals: Cu, Ag, Fe, Ni, Co, Pd.
  
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  3. Low voltage metals: Pt, Ru, Rh.
  
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  The current strength is determined by the Tafel equation based on the magnitude of the stresses of the metal, the hydrogen potential and the zinc electrode potential.
  

During cementation, the solution is hydrolyzed in the presence of cobalt, nickel, copper, zinc dust and hydrogen, forming a precipitate of zinc sulfate. Simultaneously in the form of zinc oxide sulfate ZnSO4·3Zn(OH)2+4H2O zinc hydroxide and sulfate are insoluble during cementation. In the regeneration process, the return of the anode and cathode fields occurs in the presence of zinc metal.

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  During cementation, the solution is hydrolyzed in the presence of cobalt, nickel, copper, zinc dust and hydrogen, forming a precipitate of zinc sulfate. Simultaneously in the form of zinc oxide sulfate ZnSO4·3Zn(OH)2+4H2O zinc hydroxide and sulfate are insoluble during cementation. In the regeneration process, the return of the anode and cathode fields occurs in the presence of zinc metal.
  
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  Zn+2H2O=Zn(OH)2+H2
  
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  3Zn(OH)+ZnSO4+4H2O=ZnSO4·3Zn(OH)2·H2O