Patent · US Expired

Process and device for introducing bulk material into a rotary hearth furnace

US5944514A · kind A · utility

2Cited by

4References

11Claims

0Family size

Assignee

Mannesmann AG · DE

Inventors

Ulrich Pohl · Bremen, DE
Hermann Cepin · Duisburg, DE
Hartmut Schmieden · Issum, DE
Gerd Herre · Oberhausen, DE

Key dates

Filing date	Apr 21, 1998
Grant date	Aug 31, 1999
Priority date	—
Expiry date	Apr 21, 2018

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF27D2003/0063
WIPO fieldThermal processes and apparatus
WIPO sectorMechanical engineering

Abstract

A process for feeding bulk material onto a belt of a rotary hearth furnace, which has hoods that cover the hearth belt in such a manner as to form a ring. The bulk material is deposited on a transport device at a layer thickness proportionately dependent on the distance to the rotary hearth center. The transport speed of the transport device is set at a certain value; the surface of the bulk material is smoothed; and then the bulk material is distributed at a constant layer height over the entire width of the hearth belt.

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