Title:
METHOD FOR PROCESSING LOW-GRADE LATERITE NICKEL ORE AND BENEFICIATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2017/185946
Kind Code:
A1
Abstract:
A method for processing low-grade laterite nickel ore, the method comprises: 1) adding a composite additive to a laterite nickel ore raw material to obtain a mixture, and drying said mixture; 2) reduction roasting after said drying; the roasting temperature is 850-1100℃, and the roasting time is 30-90 min; 3) water-quenching the roasted sand; 4) grinding after water-quenching; 5) performing a flotation process after said grinding, wherein said flotation process comprises roughing, scavenging and cleaning, and concentrated ore is obtained after said flotation process. Also provided is a beneficiation method for processing low-grade laterite nickel ore, the beneficiation method comprises a flotation step. The method for processing low-grade laterite nickel ore employs a combination of pyro and hydro metallurgical processes, for example, a segregation roasting-flotation composite process, can use conventional rotary kilns and utilize any type of low-grade laterite nickel ore (containing about 1% nickel) to produce high-quality nickel-iron alloy (containing about 30% or more nickel).
Inventors:
MI JIANGUO (CN)
CHENG JIANGUO (CN)
CHENG JIANGUO (CN)
Application Number:
PCT/CN2017/078993
Publication Date:
November 02, 2017
Filing Date:
March 31, 2017
Export Citation:
Assignee:
SHANGHAI XINHE NICKEL IND SCIENCE AND TECH CO LTD (CN)
International Classes:
B03B9/00; B03D1/00; C22B1/00
Domestic Patent References:
| WO2014133421A1 | 2014-09-04 | |||
| WO1996041025A1 | 1996-12-19 |
Foreign References:
| CN101514401A | 2009-08-26 | |||
| CN103233114A | 2013-08-07 | |||
| DE102014107787A1 | 2015-12-03 | |||
| CN101550483A | 2009-10-07 |
Attorney, Agent or Firm:
PEKSUNG INTELLECTUAL PROPERTY LTD. (CN)
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