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Class Information
Number: 75/474
Name: Specialized metallurgical processes, compositions for use therein, consolidated metal powder compositions, and loose metal particulate mixtures > Processes > Producing or treating free metal > At 300 degrees c or greater (e.g., pyrometallurgy, etc.) > Iron(fe) > Reduction in rotary kiln
Description: Process wherein a reducible Iron (Fe) compound is reduced to metallic Iron in an approximately cylindrical vessel rotating on its axis. The axis is horizontal or inclined less than 45 degrees from horizontal. The vessel rotates in only one direction through an angle of over 360 degrees during the reduction and rotates substantially continuously.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7452497 |
Furnace sidewall structure of rotary hearth furnace |
Nov. 18, 2008 |
| 6390810 |
Method and apparatus for reducing a feed material in a rotary hearth furnace |
May. 21, 2002 |
| 6296479 |
Direct reduction method and rotary hearth furnace |
Oct. 2, 2001 |
| 5660805 |
Method for beneficiating titanium-bearing material containing iron |
Aug. 26, 1997 |
| 5437707 |
Apparatus for treating iron ore |
Aug. 1, 1995 |
| 5314171 |
Apparatus for the extraction of metals from metal-containing raw materials |
May. 24, 1994 |
| 4740239 |
Process for exploitation of low grade oxidic and iron-bearing complex ores or concentrates |
Apr. 26, 1988 |
| 4701214 |
Method of producing iron using rotary hearth and apparatus |
Oct. 20, 1987 |
| 4622905 |
Furnacing |
Nov. 18, 1986 |
| 4462793 |
Rotary kiln and method of using such a kiln |
Jul. 31, 1984 |
| 4255185 |
Processes and apparatus for reducing and subsequently pelletizing moist fine-grained ore |
Mar. 10, 1981 |
| 4247323 |
Process of directly reducing iron oxide-containing materials |
Jan. 27, 1981 |
| 4238222 |
Waelz process of volatilizing zinc and lead from iron oxide-containing materials |
Dec. 9, 1980 |
| 3932170 |
Use of scavenger in recovery of metal values |
Jan. 13, 1976 |
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