Open AccessOn the role of hydrated calcium carboaluminate in the improvement of the production technology of alumina from nephelines
Author(s) -
Е. В. Сизякова,
П. В. Иванов
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1515/2/022048
Subject(s) - nepheline , aluminate , ettringite , coagulation , chemical engineering , nepheline syenite , thickening , materials science , calcium , mineralogy , chemistry , metallurgy , cement , portland cement , polymer science , engineering , psychology , psychiatry
The coagulation properties of HCCA in the system “aluminate solution - nepheline sludge” were studied, which allowed to improve the processes of thickening and washing of nepheline sludge. Solutions were developed aimed at the improvement of the coarse alumina production technology on the basis of increasing the efficiency of the carboaluminate method for separating Al (III) and Si(IV) hydroxo complexes and using the combined crystal growing modifier CaCO3 – HCCA.