| Patent Number |
Title Of Patent |
Date Issued |
| 4369059 |
Process of directly reducing iron oxide containing materials in a rotary kiln |
January 18, 1983 |
| Before iron oxide-containing materials is reduced in a rotary kiln by a treatment with solid carbonaceous reducing agents below the melting point of the charge, the iron oxide containing material and carbonaceous reducing agent are preheated in a multiple-hearth furnace, in which the |
| 4368177 |
Process of producing quicklime by calcining in a rotary kiln |
January 11, 1983 |
| A process is disclosed for producing quicklime by a calcining treatment with a hot gas in a rotary kiln, wherein solid carbonaceous fuel for producing hot gas is fed into the charging end of the rotary kiln and an oxygen-containing gas is blown through nozzle blocks into the charge d |
| 4312666 |
Steel making process |
January 26, 1982 |
| Residual materials which become available in metallurgy and contain oxides and volatilizable non-ferrous metals or compounds thereof are treated in a rotary kiln with solid carbonaceous reducing agents and are thus directly reduced in a high proportion to sponge iron whereas a substantia |
| 4259081 |
Process of calcining limestone in a rotary kiln |
March 31, 1981 |
| A process for the calcining of limestone or hydrated lime by thermal treatment thereof with hot gases in a rotary kiln through which the kiln atmosphere and the charge are countercurrently passed, which kiln is fed with solid carbonaceous fuel, is described. The invention resides in |
| 4247323 |
Process of directly reducing iron oxide-containing materials |
January 27, 1981 |
| When in the direct reduction of iron-oxide-containing materials in a rotary kiln solid, carbonaceous reducing agents having a high content of volatile constituents are charged to the rotary kiln at its charging end, a reoxidation of the sponge iron can readily occur in the final portion |
| 4238222 |
Waelz process of volatilizing zinc and lead from iron oxide-containing materials |
December 9, 1980 |
| In a Waelz process of volatilizing zinc and lead from iron-containing and oxide-containing material in an inclined rotary kiln, which is charged at its upper end with the material together with solid carbonaceous reducing agent having a high content of volatile combustible constituents, |
| 4179280 |
Direct-reduction process carried out in a rotary kiln |
December 18, 1979 |
| A process for directly reducing iron oxide-containing materials to provide sponge iron by heating said iron oxide-containing materials in a rotary kiln while employing a solid carbonaceous reducing agent having a high content of volatile combustible components, wherein oxygen-containing |
| 4144052 |
Process of directly reducing iron-containing oxidic materials |
March 13, 1979 |
| A process has been developed for directly reducing iron-containing oxidic materials to sponge iron by means of a moist solid carbonaceous reducing agent having a high volatile content in a rotary kiln in which the solid charge and a gaseous atmosphere move in counter-current flow through |
