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Classification and morphological structure of scale in the process of alumina production high pressure digestion
Hai Zhu Ma;  Fang Huang;  Shi Rong Liu;  Bo Xu;  Hua Long Liu
2014
Source PublicationAdvanced Materials Research
Volume960-9611Pages:274-280
Abstract

The chemical composition, phase component and morphology characteristics of scale were researched by chemical analysis, XRD, SEM and TEM. The results show that the scale can be divided into iron minerals, silicon minerals, Ca-Ti-Mg minerals and aluminum hydroxide. Alumogoethite and micro-fine sodium-silicon slag fill in the gaps between the neat and bulky hematite crystals. Microgranular hydrated garnet and olivine fill in the gaps between the goethite crystals with a dense layered structure, accompanied by a small amount of galena and apatite precipitation particles. Perovskite and magnesium hydroxide have five periodic sedimentary cycles, forming an alternating sedimentary layer structure. Aluminum hydroxide forms thick scale and presents two kinds of typical structures, spherulitic and laminated. The research provides the theoretical basis for preventing and controlling scale in high-pressure digester group.

KeywordAlumina Classification Morphological Structure Scale
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.gyig.ac.cn/handle/42920512-1/11191
Collection矿床地球化学国家重点实验室
Affiliation1.College of Material and Metallurgy, Guizhou University, Guiyang, Guiyang, China
2.State Key Laboratory of Deposit Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, Guizhou, China
3.Guizhou Branch of CHALCO, Guiyang, Guizhou, China
4.Wuchuan Alumina Branch of CPI Guizhou Zunyi Industry Development Company Limited, Zunyi, Guizhou, China
Recommended Citation
GB/T 7714
Hai Zhu Ma;Fang Huang;Shi Rong Liu;Bo Xu;Hua Long Liu. Classification and morphological structure of scale in the process of alumina production high pressure digestion[J]. Advanced Materials Research,2014,960-9611:274-280.
APA Hai Zhu Ma;Fang Huang;Shi Rong Liu;Bo Xu;Hua Long Liu.(2014).Classification and morphological structure of scale in the process of alumina production high pressure digestion.Advanced Materials Research,960-9611,274-280.
MLA Hai Zhu Ma;Fang Huang;Shi Rong Liu;Bo Xu;Hua Long Liu."Classification and morphological structure of scale in the process of alumina production high pressure digestion".Advanced Materials Research 960-9611(2014):274-280.
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