PARTIAL REPLACEMENT OF THE SOLID FUEL BY A GASEOUS FUEL IN THE SINTERING PROCESS.

C. R. M. has developed a series of tests in an experimental pot grate, with the aim of partial replacement of the solid fuel normally used in sintering process by a gaseous one. Several techniques have been used, especially preheating of the mix after its charging on the grate and before ignition by means of heating gases. The gaseous fuel was either natural gas or blast furnace synthetic gas. Tests have also been realized by combining the preheating with a mix perforation after its charging on the grate. For the mix utilized, the amount of coke replaced by gas can reach 50%.