Patent · US Expired

Charging electro furnaces

US4702461A · kind A · utility

0Cited by

3References

2Claims

0Family size

Assignee

Mannesmann AG · DE

Inventors

Emil Herre · Herne, DE
Gerd Herre · Oberhausen, DE
Guenter Zimmer · Mainz, DE
Hermann Cepin · Duisburg, DE

Key dates

Filing date	May 16, 1984
Grant date	Oct 27, 1987
Priority date	—
Expiry date	May 16, 2004

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF27D2003/0006
WIPO fieldThermal processes and apparatus
WIPO sectorMechanical engineering

Abstract

An electro furnace for metallurgic operations has its top connected to a vertically extending cylinder, into which a charge pipe leads at an oblique angle. A ceramic plug glides in the cylinder in piston like fashion for selective opening and closing the opening from said charge pipe. Any burden and ore mixture will therefore fall freely from the charge pipe whenever the plug is shifted up to open the gate.

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