Patent · US Expired

Treatment of ores or metallurgical by-products containing arsenic and antimony

US4102976A · kind A · utility

16Cited by

1References

38Claims

0Family size

Assignee

Metallurgie Hoboken-Overpelt · BE

Inventors

Jozef Hiemeleers · Olen, BE
Achille De Schepper · Kasterlee, BE
Antoine Van Peteghem · Olen, BE

Key dates

Filing date	Mar 18, 1976
Grant date	Jul 25, 1978
Priority date	—
Expiry date	Mar 18, 1996

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P10/20
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

In a process for treating a metal bearing material containing arsenic and antimony by leaching in an acid solution with an oxygen-containing gas under pressure at a temperature of between 20.degree. and 200.degree. C, the improvement which consists in adding at least one element chosen from the group consisting of arsenic and phosphorus in such an amount to the leach mixture that the molar ratio (As + 4P) : Sb therein shall be at least equal to 8, thus dissolving at least the major part of the arsenic and antimony contained in the starting material.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.