Title:
金属酸化物の製錬方法
Document Type and Number:
Japanese Patent JP6900696
Kind Code:
B2
Abstract:
Provided is a smelting method in which, for example, a metal oxide such as a nickel oxide ore including nickel oxide is used as a source material and is reduced with a carbonaceous reducing agent to obtain a reduced product, with which method efficient processing can be achieved. This metal oxide smelting method is, for example, a nickel oxide ore smelting method. Specifically, the method includes a reduction process step that has: a drying step in which a mixture that was obtained by mixing a metal oxide and a carbonaceous reducing agent is dried; a preheating step in which the dried mixture is preheated; a reduction step in which the preheated mixture is reduced using a rotary hearth furnace, said rotary hearth having a hearth that rotates and not having a partition structure in an interior; and a cooling step in which the obtained reduced product is cooled.
Inventors:
Takashi Iseki
Yukihiro Goda
Junichi Kobayashi
Shuji Okada
Yukihiro Goda
Junichi Kobayashi
Shuji Okada
Application Number:
JP2017022525A
Publication Date:
July 07, 2021
Filing Date:
February 09, 2017
Export Citation:
Assignee:
Sumitomo Metal Mining Co., Ltd.
International Classes:
C22B5/10; C22B1/24; C22B23/02
Domestic Patent References:
| JP2000292069A | ||||
| JP2002030319A | ||||
| JP2003073722A | ||||
| JP2016035083A | ||||
| JP2009079292A | ||||
| JP2004156140A |
Attorney, Agent or Firm:
Masayuki Masabayashi
Hayashi Ichiyoshi
Hayashi Ichiyoshi