Pelletizing of nickel residue from laterite for direct reduction process

Autor:	Nobuyuki Imanishi, Masao Shirieda, Mamoru Onoda, Ryo Watanabe
Rok vydání:	1987
Předmět:	Materials science business.industry Metallurgy chemistry.chemical_element Geotechnical Engineering and Engineering Geology Pelletizing Nickel Compressive strength chemistry Geochemistry and Petrology Pellet Bentonite Coal Leaching (metallurgy) business Porosity
Zdroj:	International Journal of Mineral Processing. 19:115-126
ISSN:	0301-7516
Popis:	Pelletizing and reduction tests for direct reduction process using nickel leaching residue were carried out. Green pellet showed sufficient compressive strength and drop resistance for handling without addition of bentonite. The compressive strength of fired pellet was greatly increased when a small amount of limestone was added and the maximum strength was achieved at a CaO/SiO2 ratio of 0.2. Pellet with a compressive strength of 240 kg/pellet and a porosity of 30% was obtained by means of a pot-grate furnace at a firing temperature of 1220°C. When reduction tests were carried out by using non-coking coal as reductant, the highest degree of reduction (85.8%) was achieved at a reduction temperature of 1100°C.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::22ef66833515f25fa523a315baa77816 https://doi.org/10.1016/0301-7516(87)90035-4 Zobrazit plný text záznamu