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1. (WO1979000058) A METHOD OF MANUFACTURING CRUDE IRON FROM SULPHIDIC IRONCONTAINING MATERIAL
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1979/000058 International Application No.: PCT/SE1978/000024
Publication Date: 08.02.1979 International Filing Date: 21.07.1978
IPC:
C21B 11/00 (2006.01) ,C21B 13/00 (2006.01) ,C21B 13/14 (2006.01) ,C21B 15/00 (2006.01)
C CHEMISTRY; METALLURGY
21
METALLURGY OF IRON
B
MANUFACTURE OF IRON OR STEEL
11
Making pig-iron other than in blast furnaces
C CHEMISTRY; METALLURGY
21
METALLURGY OF IRON
B
MANUFACTURE OF IRON OR STEEL
13
Making spongy iron or liquid steel, by direct processes
C CHEMISTRY; METALLURGY
21
METALLURGY OF IRON
B
MANUFACTURE OF IRON OR STEEL
13
Making spongy iron or liquid steel, by direct processes
14
Multi-stage processes
C CHEMISTRY; METALLURGY
21
METALLURGY OF IRON
B
MANUFACTURE OF IRON OR STEEL
15
Other processes for the manufacture of iron from iron compounds
Applicants:
Inventors:
Priority Data:
770846222.07.1977SE
Title (EN) A METHOD OF MANUFACTURING CRUDE IRON FROM SULPHIDIC IRONCONTAINING MATERIAL
(FR) PROCEDE DE PRODUCTION DE FER BRUT A PARTIR D"UN MATERIAU CONTENANT DU SULFURE DE FER
Abstract:
(EN) A method of producing crude iron from sulphidic iron-containing material, where an iron sulphide containing material is charged to a furnace space and there, together with a silica containing material and oxygen, is smelted to an iron-silicate smelt during combustion of sulphidebound sulphur present, so that said smelt contains approximately 70-90% by weight iron calculated as iron (II) oxide. To the smelt is then added a reducing agent in a manner such that the iron content calculated as iron (II) oxide falls to approximately 60% by weight or lower in the presence of lime and/or other fluxing agents and that formed crude iron is separated. The iron content of the iron silicate smelt is then increased by adding further iron sulphide containing material and oxygen for smelting and reducing agent for another reduction.
(FR) Procede de production de fer brut a partir d"un materiau contenant du sulfure de fer, selon lequel un tel materiau est place dans un four ou, en presence d"un materiau contenant de la silice et en presence d"oxygene, il est fondu en un fer-silicate pendant que s"opere la combustion du soufre du sulfure, de telle sorte que le fer-silicate contienne approximativement 70-90% en poids de fer calcule sous forme d"oxyde de fer (II). Au fer-silicate on ajoute un agent reducteur de sorte que la teneur en fer calculee sous forme d"oxyde de fer (II) tombe a 60% en poids approximativement ou moins en presence de chaux et/ou d"autres agents de fluxage pour separer le fer brut forme. La teneur en fer du fer-silicate est augmentee en ajoutant davantage de materiau contenant du sulfure de fer et de l"oxygene pour la fusion ainsi que de l"agent reducteur pour une autre reduction.
Designated States:
Publication Language: English (EN)
Filing Language: English (EN)