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Effect of Particle Sizes of Slag on Reduction Characteristics of Nickel Slag-Coal Composite Briquette

Li Xiaoming, Li Yi, Xing Xiangdong, Wang Yanjun, Wen Zhenyu, Yang Haibo

Archives of Metallurgy and Materials

2021

Vol. 66, iss. 1

127--134

Nickel slag has a high-content iron and is a secondary utilization resource with great development potential. The coal-based direct reduction is an innovative technology that can be used to utilize the iron resources in nickel slag. The effect of the particle size of nickel slag on the strength and the reduction of nickel slag-coal composite briquettes were investigated. Four samples with particle size of 75~106 μm, 106~150 μm, 150~270 μm, and >270 μm were selected. The drop strength increased 9.4 times and the compressive strength reached 281.1 N when the nickel slag particle size decreased from >270 μm to 75~106 μm. The reduction degree determined by the data from the thermogravimetric experiment indicated that its maximum was 79.545%. The reduction experiments performed at 1200°C for 45 minutes indicated that the nickel slag with particle sizes between 75~106 μm were appropriate for the reduction of the nickel slag-coal composite briquettes.

Fenigrit – nowe polskie ścierniwo z żużla poniklowego

Kanasiewicz J., Marcinkowski M.

Inżynieria Powierzchni

2014

nr 1

20--25

Podano stan wstępnych badań i doświadczeń dotyczących wdrażania produkcji nowego ścierniwa z żużla poniklowego w Polsce z hałdy po hucie niklu w Szklarach. Porównano te badania z właściwościami żużli poniklowych o nazwie Green Diamond i Ultra Blast oraz z polskim żużlem pomiedziowym PolGrit. Podano wstępny opis nowego ścierniwa na podstawie dotychczasowych badań oraz jego wady i zalety.

The initial state of research and experience concerning the implementation of production of new nickel slag abrasive from the slug dump remained after nickel works in Poland. Results of these studies were compared with the properties of nickel slag abrasives called Green Diamond and Ultra Blast and Polish cooper slag PolGrit. Preliminary specification of new abrasive with its advantages and disadvantages on the basis of previous research were described.