发明名称 |
WERKWIJZE VOOR HET OPWERKEN VAN IJZERBEVATTENDE ZWAVELZUUR-OPLOSSINGEN, EN DAARBIJ TE GEBRUIKEN INRICHTING. |
摘要 |
<p>Iron is extracted by cathodic deposition from final pickling solutions which per litre contain at most 100 g of sulphuric acid and at least 25 g of iron ions. The sulphate ions are removed electrodialytically. Salts are added to the final pickling solution to set an ammonium, magnesium or alkali metal sulphate concentration of 0.5-1.0 mol/litre. The final pickling solution is fed into the cathode compartment of an electrolytical appliance composed of cells - which contain anode and cathode compartments separated by diaphragms - and is allowed to flow through said cathode compartments, while the iron content of the solution is depleted to a value of 7-15 g Fe<++>/litre. Then the solution is passed into the anode compartment of the appliance and is moved therethrough in a direction identical to that of the flow maintained in the cathode compartment. The current density based on the area of the diaphragm is held at a value of 15-22 A/dm<2>, and the operating temperature of the electrolysis is held at a value of 70-90 DEG C.</p> |
申请公布号 |
NL177424(C) |
申请公布日期 |
1985.09.16 |
申请号 |
NL19740015391 |
申请日期 |
1974.11.26 |
申请人 |
"LICENCIA" TALALMANYOKAT ERTEKESITOE VALLALAT TE BOEDAPEST, HONGARIJE. |
发明人 |
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分类号 |
C23G1/36;C25C1/06;(IPC1-7):C23G1/36;B01D13/02 |
主分类号 |
C23G1/36 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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