IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0000270
(1986-12-24)
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발명자
/ 주소 |
- Bertha Josef (Brixlegg ATX) Wallner Jorg (Brixlegg ATX) Wrz Helmt (Brixlegg ATX)
|
출원인 / 주소 |
- Austria Metal Aktiengesellschaft (Braunau am Inn ATX 03)
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인용정보 |
피인용 횟수 :
7 인용 특허 :
0 |
초록
▼
A hydrometallurgical process for enrichment of gold, platinum and palladium from copper electrolysis anode sludge, and simultaneously recovery of selenium, in which the sludge is treated with Cl2/HCl to transform the selenium of a hexavelent state and precipitate out silver chloride. The filtrate is
A hydrometallurgical process for enrichment of gold, platinum and palladium from copper electrolysis anode sludge, and simultaneously recovery of selenium, in which the sludge is treated with Cl2/HCl to transform the selenium of a hexavelent state and precipitate out silver chloride. The filtrate is then subjected to selective reduction of precipitate the noble metals and the resulting filtrate is chlorinated and a further reduction is effected to precipitate the metallic selenium.
대표청구항
▼
A hydrometallurgical process for the separation and enrichment of gold, platinum and palladium and for the recovery of selenium from the anode sludge of cooper electrolysis which contains in addition to Au, Pt and Pd, Ag, Se and Te and which also contains Sb, Sn, As, Bi, Cu, Ni, Zn, Fe, sulfate, chl
A hydrometallurgical process for the separation and enrichment of gold, platinum and palladium and for the recovery of selenium from the anode sludge of cooper electrolysis which contains in addition to Au, Pt and Pd, Ag, Se and Te and which also contains Sb, Sn, As, Bi, Cu, Ni, Zn, Fe, sulfate, chloride, BaSO4, and SiO2, said process comprising the steps of: (a) chlorinating said sludge with Cl2/HCl to solubilize in an aqueous phase thereof substantially all of the gold, platinum, palladium and selenium of said sludge, and filtering the aqueous phase from silver-chloride containing solids of said sludge to recover a first filtrate therefrom; (b) reacting said filtrate with an excess of chlorine gas at room temperature to transform the selenium solubilized in said filtrate as Se+4 completely of Se+6 and tellurium in the filtrate as Te+4 to Te+6; (c) treating the filtrate resulting from step (b) with a reducing agent capable of precipitating out gold quantitatively and in the presence of an amount of Se+4 quantitatively precipitating out platinum, palladium also being precipitated out by said reducing agent, said reducing agent being selected from the group which consists of monovalent copper ion, a compound capable of forming monovalent copper ion, and copper and bronze dust; (d) filtering the precipitate resulting in step (c) from a second filtrate containing at least the major part of the selenium of said first filtrate; (e) heating the second filtrate in the presence of HCl and reacting said second filtrate with a reducing agent to quantitatively precipitate selenium, said reducing agent being selected from the group which consists of monovalent copper ion, a compound capable of forming monovalent copper ion, and copper and bronze dust; and (f) filtering the selenium-containing precipitate from the second filtrate reacted in step (e).
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