C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
53/298
C22B 23/06 (2006.01) C22B 1/14 (2006.01) C22B 23/00 (2006.01) C22B 23/02 (2006.01)
Patent
CA 1332286
ABSTRACT A method of refining nickel oxide ore or the like by crushing the ore, then forming briquettes of the crushed ore, and drying, pre-heating and sintering the briquettes in a rotary kiln to reduce metal components contained in the ore and also cause growth of luppe, in which large amounts of a reducing agent and a slag formation agent are preliminarily uniformly incorporated in the briquettes, the water content of the briquettes are adjusted to an optimum amount, and the briquettes are then sintered in a rotary kiln, thus promoting the reduction of metal components and slag formation, greatly increasing the operation efficiency, widely reducing heat energy for drying and pre-heating and reducing the amount of scattered dust so that it is possible to improve the productivity of the kiln.
514432
Arai Haruo
Watanabe Tetsuya
Nippon Yakin Kogyo Co. Ltd.
Ridout & Maybee Llp
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