On the possibility of carbonaceous dust waste use of prebaked anode production in silicon metallurgy

20th International Scientific and Research Conference "Metallurgy: Technologies, Innovation, Quality. Metallurgy-2017"

Nemchinova, N.V.^1 ; Tyutrin, A.A.^1 ; Korepina, N.A.^1 ; Belskii, S.S.^1

Irkutsk National Research Technical University, 83 Lermontova street, Irkutsk

664074, Russia^1

关键词: Analytical studies;    Carbon containing;    Carbonaceous dust;    EPR spectra;    Gaussian signals;    Pelletized form;    Pre-baked anodes;    Reductants;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/411/1/012052/pdf
DOI  :  10.1088/1757-899X/411/1/012052

来源: IOP

【 摘 要 】

During the prebaked anodes production used in aluminium electrometallurgy a considerable amount of fine-dispersed waste with a carbon content of more than 90% is formed. Analytical studies of the waste properties such as chemical, particle size analysis, moisture content and some others have been conducted. Electro-paramagnetic resonance (EPR) method was used to study the structures of charcoal, oil coke and a sample of carbon-containing dust from mixing and pressing compartment of aspiration equipment. EPR results showed that the studied sample is similar in structure to natural traditional reductants (its EPR spectrum has a pronounced narrow Gaussian signal). This indirectly shows its satisfactory reactivity and can be recommended as an additive (in pelletized form) to the charge for the silicon production.