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Significant influence of self-possessed moisture of limonitic nickel laterite on sintering performance and its action mechanism

引用

Journal of Iron and Steel Research(International) 2022年第9期29卷 1368-1380页

作者： Yu-xiao Xue De-qing Zhu Jian Pan Zheng-qi Guo Hong-yu Tian Gen Li Qing-zhou Huang Liao-ting Pan Xue-zhong Huang School of Minerals Processing and Bioengineering Central South UniversityChangsha 410083HunanChina Guangxi Beibu Gulf New Material Co. Ltd.Beihai 536000GuangxiChina

In consideration of the abundant moisture of limonitic nickel laterite mined,it is essential to determine whether the selfpossessed moisture of limonitic nickel laterite after pre-dried is appropriate for ***,based on the characterization of limonitic nickel laterite,the influence of its self-possessed moisture on sintering performance was expounded by sinter pot tests and the relevant mechanism was revealed by the systematical analyses of the granulation properties of sinter mixture,thermodynamic conditions during sintering and mineralogy of product *** results indicate that the selfpossessed moisture of limonitic nickel laterite indeed has significant infuence on its sintering *** the optimum self-possessed moisture of 21 mass%,sinter indices are relatively better with tumble index,productivity and solid fuel rate of 48.87%,1.04 t m^(-2) h^(-1)and 136.52 kg t^(-1),respectively,due to the superior granulation properties of sinter mixture and thermodynamic conditions during sintering,relatively large amount of silico-ferrite of calcium and alumina and tighter sinter ***,sintering performance of limonitic nickel laterite is still much poorer than that of ordinary iron *** is feasible to strengthen limonitic nickel laterite sintering by inhibiting the over-fast sintering speed and improving the thermodynamic conditions during sintering.

关键词： Limonitic nickel laterite self-possessed moisture Sintering performance Action mechanism:Stainless steel

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