Method for manufacturing agglomerates of fired pellets

Details Method for manufacturing agglomerates of fired pellets Method for manufacturing agglomerates of fired pellets

1987-12-11

1989-07-25

Andrews, Melvyn J.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75257, C22B 120

Patent

active

048510386

ABSTRACT:
A method for manufacturing agglomerates of fired pellets comprising the steps of: the first pelletization step of adding and mixing fluxes to fine iron ores containing 30 to 95 wt. % of those of 0.125 mm or less in particle size to form a mixture and to pelletize the mixture into green pellets; the second pelletization step of adding powder cokes containing 80 to 100 wt. % of those of 1 mm or less in particle size to the green pellets, in amount of 2.5 to 4.0 wt. % to the fine iron ores, to prepare, through pelletization, green pellets coated with the powder cokes; and the sintering step of charging the green pellets coated with the powder cokes into a grate type sintering machine to manufacture the agglomerates of fired pellets. And furthermore, in another method for manufacturing agglomerated of fired pellets, fine iron ores containing 10 to 80 wt. % of those of 0.044 mm or less in particle size and powder cokes containing 20 to 70 wt. % of those of 1 mm or less in particle size are used.

REFERENCES:
patent: 4722750 (1988-02-01), Saito et al.
patent: 4723995 (1988-02-01), Satomi et al.

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