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Title:
REDUCTION ROASTING METHOD FOR IRON ORE
Document Type and Number:
WIPO Patent Application WO/2017/076080
Kind Code:
A1
Abstract:
A reduction roasting method for iron ore, which provides an approach in which twice reduction roasting is carried out on low-grade difficultly-selected iron ore such as red soil josephinite and iron-aluminum-silicon associated ore by means of a shaft kiln and a rotary kiln, and reduced iron with low cost is directly produced, and the low-grade difficultly-selected iron ore is comprehensively utilized. In the method, coal carbon is directly used as a fuel and a reducing agent, and coke and coal gas are not needed; aluminum oxide is easily and economically extracted; a main component of tailings is calcium silicate, and the tailings can be directly used; no solid waste is produced. By means of the method, low-grade difficultly-selected iron ore is comprehensively utilized, and economic value is high.

Inventors:
LI GUIGEN (CN)
TANG WENLIN (CN)
Application Number:
CN2016/092770
Publication Date:
May 11, 2017
Filing Date:
August 01, 2016
Export Citation:
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Assignee:
SHENZHEN JINMEIWEI ELECTRON CO LTD (CN)
International Classes:
C22B1/02
Domestic Patent References:
WO2010085635A22010-07-29
Foreign References:
CN105369034A2016-03-02
CN203683618U2014-07-02
CN104195278A2014-12-10
CN203782198U2014-08-20
CN201555450U2010-08-18
Attorney, Agent or Firm:
YOGO PATENT & TRADEMARK AGENCY LIMITED COMPANY (CN)
广州粤高专利商标代理有限公司 (CN)
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