He, Aoping

Liu, Chen

Zeng, Jianmin

English

Purdue E-Pubs

8th International Conference on Physical and Numerical Simulation of Materials Processing (ICPNS)14–17 October 2016Seattle, Washington | Hosted by Purdue UniversitySESSION 8: POSTER, GRAND PACIFIC BALLROOMSUNDAY, OCTOBER 15, 2016Experimental investigation on recovery of Fe–Ni alloy from  Bayer red mud and laterite nickelAoping He; Chen Liu, Guangxi Institute of Metallurgy; Jianmin Zeng, Guangxi UniversityABSTRACTIn this paper, a process of extracting Fe–Ni alloy from red mud and laterite nickel has been proposed. Red mud, laterite nickel, and coke powder were heated together inside an electric arc furnace so as to obtain Fe–Ni alloy. The experiments indicated that recovery rates of Fe–Ni alloy were from 70 to 89%, when the coke content increas-es from 20 to 35%. The microstructure of the alloys depends mainly upon the coke content. The metallographic structure features white iron when addition of coke was below 25%. The free graphite flakes appeared when the coke content was 25%, where the microstructure can be featured cementite and stripe-shaped graphite. If the coke content gets to 30% or more, the microstructure is characterised by grey iron. It is manifested that impact work increases and hardness decreases of the alloys with the increasing of coke content, accordingly the micro-structures change from white iron to grey cast iron. In conclusion, this process is a potential technology for reduc-tion of Fe alloys from red mud and for manufacture of Fe–Ni alloys from red mud and laterite nickel.KEYWORDS: red mud, laterite nickel, carbothermic reduction

Experimental Investigation on Recovery of Fe-Ni Alloy from Bayer Red Mud and Laterite Nickel

https://docs.lib.purdue.edu/cgi/viewcontent.cgi?article=1257&amp;context=icpns

Experimental Investigation on Recovery of Fe-Ni Alloy from Bayer Red Mud and Laterite Nickel

Abstract

Similar works

Full text

Available Versions

Purdue E-Pubs