2022
DOI: 10.1007/978-3-030-88586-1_11
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Alumina Quality, HF Removal, Dissolution and Aluminum Purity

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“…25 The alumina transformed in smelters today shifted from being finer ''floury'' a-Al 2 O 3 to coarser ''sandy'' g-Al 2 O 3 over the years. 26,27 This change mainly resulted from the adoption of point-feeders to inject alumina in the cryolite baths, which require better flowability to control the injection and thus the concentration of alumina in the reduction cells. SGA must also exhibit a low attrition index which quantifies its breakdown during handling.…”
Section: Aluminum-fuel Cycle Cost Assessmentmentioning
confidence: 99%
“…25 The alumina transformed in smelters today shifted from being finer ''floury'' a-Al 2 O 3 to coarser ''sandy'' g-Al 2 O 3 over the years. 26,27 This change mainly resulted from the adoption of point-feeders to inject alumina in the cryolite baths, which require better flowability to control the injection and thus the concentration of alumina in the reduction cells. SGA must also exhibit a low attrition index which quantifies its breakdown during handling.…”
Section: Aluminum-fuel Cycle Cost Assessmentmentioning
confidence: 99%