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| ON THE CONCENTRATION OF CADMIUM AND RECOVERY OF LEAD FROM THE LEAD BLAST FURNACE DUST |
| CHAO PEI-YING;LEE KENG-SHENG;FANG BING;TAN KWO YONG;WANG CHUEN-CHI Institute of Metal Research; Academia Sinica Smelting Works No. l; Ministry of Metal Industries |
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Cite this article:
CHAO PEI-YING;LEE KENG-SHENG;FANG BING;TAN KWO YONG;WANG CHUEN-CHI Institute of Metal Research; Academia Sinica Smelting Works No. l; Ministry of Metal Industries. ON THE CONCENTRATION OF CADMIUM AND RECOVERY OF LEAD FROM THE LEAD BLAST FURNACE DUST. Acta Metall Sin, 1957, 2(1): 31-40.
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Abstract On the basis of the distribution of lead, cadmium, arsenic and zinc amongthe various phases during the smelting process, the disadvantages of the currentlyadopted method using silica as slag-forming material for the treatment of leadblast furnace dust have been discussed. Experiments have been carried out in treating the dust with a new method,which is based upon the iron precipitation reaction with Na_2CO_3 as flux. Resultsobtained show: 1) 99.55% cadmium of the original dust may be concentrated intothe secondary dust; 2) 95.6% of lead may be recovered simultaneously, its purityis about 97%; 3) as cadmium in the secondary dust is easily leachable, a rate ofrecovery of cadmium as high as 98.5% could be obtained. It is suggested that,the present method, in view of its high recovery of valuable metals and its com-paratively simple operating procedure, is well suitable for the dust treatment inthe lead smelting industries.
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Received: 18 January 1957
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