Specialized metallurgical processes – compositions for use therei – Processes – Electrothermic processes
Patent
1986-06-04
1988-02-09
Rutledge, L. Dewayne
Specialized metallurgical processes, compositions for use therei
Processes
Electrothermic processes
75 3, C22B 116
Patent
active
047239956
ABSTRACT:
A method for continuously manufacturing fired pellets, comprising the steps of: using raw materials comprising a first iron ore fine of from 30 to 70 wt. % and a second iron ore fine of from 70 to 30 wt. %, the first iron ore fine comprising an iron ore fine of from 50 to 80 wt. % having a particle size of up to 0.044 mm and an iron ore fine of from 50 to 20 wt. % having a particle size of from over 0.044 mm up to 0.5 mm, the second iron ore fine comprising an iron ore fine of from 40 to 70 wt. % having a particle size of from over 0.5 mm up to 8 mm and an iron ore fine of from 60 to 30 wt. % having a particle size of up to 0.5 mm; adding a powdery flux and water to the above-mentioned raw materials to form a mixture; forming the mixture into green pellets having a particle size of from 3 to 12 mm; covering the surfaces of the green pellets with a powdery solid fuel in a prescribed amount; and drying, igniting and then firing the green pellets in an endless travelling grate type firing furnace into fired pellets.
REFERENCES:
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patent: 4504306 (1985-03-01), Miyashita
Iwata Yoshihito
Miyashita Tsuneo
Saito Hiroshi
Sakamoto Noboru
Satomi Koji
Kastler S.
Nippon Kokan Kabushiki Kaisha
Rutledge L. Dewayne
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