Patent · US Expired

Process for removing tin, arsenic and antimony from molten lead

US5451247A · kind A · utility

6Cited by

2References

20Claims

0Family size

Assignee

Messer Griesheim GmbH · DE

Inventors

Gerhard Gross · Achern, DE
Dietmar Wibck · Tönisvorst, DE
Karl Hengst · Kürten, DE
Frank Toubartz · Kürten, DE

Key dates

Filing date	Jul 6, 1994
Grant date	Sep 19, 1995
Priority date	—
Expiry date	Jul 6, 2014

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF27D2003/168
WIPO fieldThermal processes and apparatus
WIPO sectorMechanical engineering

Abstract

The invention relates to a process for removing tin, arsenic and antimony from molten lead by means of oxygen or oxygen-containing gas mixtures, which is or are blown into the molten lead by means of at least one gas nozzle (2). To avoid damage to the gas nozzle, at least the oxygen outlet region (13) thereof, located in the molten lead (6), is enveloped by an inert gas.

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