Alumina Extraction from Kaolinite via Calcification-Carbonation Process
The rapid development of the alumina industry in China has led to the depletion of high-quality bauxite resources. The proposed calcification-carbonation method (CCM) can convert the middle silicon of bauxite into CaO · SiO 2 and CaCO 3 , thus enabling clean and efficient utilization of low-grade re...
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| Veröffentlicht in: | Russian journal of non-ferrous metals 2020-05, Vol.61 (3), p.248-256 |
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| container_title | Russian journal of non-ferrous metals |
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| creator | Zimu Zhang Lu, Guozhi Chen, Yongchao Zhang, Tingan Chao, Xi Chen, Yang Wang, Yanxiu Liu, Yan |
| description | The rapid development of the alumina industry in China has led to the depletion of high-quality bauxite resources. The proposed calcification-carbonation method (CCM) can convert the middle silicon of bauxite into CaO · SiO
2
and CaCO
3
, thus enabling clean and efficient utilization of low-grade resources. Since kaolinite is the main silicon-bearing mineral in low-grade bauxite, the transformation characteristics of kaolinite in the CCM process are investigated in this research. The experimental results indicate that temperature has a significant effect on both the calcification process and the carbonation process. The theoretical alumina-to-silica ratio (
A
/
S
) in the reacted residue can be lowered to 0.55 using the CCM process used to treat gibbsite, resulting in a recovery ratio of alumina approximately 15% greater than that of the Bayer process. More than 65% of the alumina can be recovered through the CCM. The Na
2
O content in the slag from the CCM meets the requirements of the cement industry, and cleaner production of alumina can be enabled by the CCM. |
| doi_str_mv | 10.3103/S1067821220030207 |
| format | Article |
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2
and CaCO
3
, thus enabling clean and efficient utilization of low-grade resources. Since kaolinite is the main silicon-bearing mineral in low-grade bauxite, the transformation characteristics of kaolinite in the CCM process are investigated in this research. The experimental results indicate that temperature has a significant effect on both the calcification process and the carbonation process. The theoretical alumina-to-silica ratio (
A
/
S
) in the reacted residue can be lowered to 0.55 using the CCM process used to treat gibbsite, resulting in a recovery ratio of alumina approximately 15% greater than that of the Bayer process. More than 65% of the alumina can be recovered through the CCM. The Na
2
O content in the slag from the CCM meets the requirements of the cement industry, and cleaner production of alumina can be enabled by the CCM.</description><identifier>ISSN: 1067-8212</identifier><identifier>EISSN: 1934-970X</identifier><identifier>DOI: 10.3103/S1067821220030207</identifier><language>eng</language><publisher>Moscow: Pleiades Publishing</publisher><subject>Alumina ; Aluminum oxide ; Bauxite ; Bayer process ; Calcification ; Calcium carbonate ; Carbonation ; Chemistry and Materials Science ; Depletion ; Gibbsite ; Kaolinite ; Materials Science ; Metallic Materials ; Metallurgy of Nonferrous Metals ; Silicon dioxide</subject><ispartof>Russian journal of non-ferrous metals, 2020-05, Vol.61 (3), p.248-256</ispartof><rights>Allerton Press, Inc. 2020</rights><rights>Allerton Press, Inc. 2020.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c355t-810d1d8d0e97f52cef53f46748a24724b365445fb5d7e492ad8314f2fd2adab83</citedby><cites>FETCH-LOGICAL-c355t-810d1d8d0e97f52cef53f46748a24724b365445fb5d7e492ad8314f2fd2adab83</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.3103/S1067821220030207$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.3103/S1067821220030207$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,776,780,27901,27902,41464,42533,51294</link.rule.ids></links><search><creatorcontrib>Zimu Zhang</creatorcontrib><creatorcontrib>Lu, Guozhi</creatorcontrib><creatorcontrib>Chen, Yongchao</creatorcontrib><creatorcontrib>Zhang, Tingan</creatorcontrib><creatorcontrib>Chao, Xi</creatorcontrib><creatorcontrib>Chen, Yang</creatorcontrib><creatorcontrib>Wang, Yanxiu</creatorcontrib><creatorcontrib>Liu, Yan</creatorcontrib><title>Alumina Extraction from Kaolinite via Calcification-Carbonation Process</title><title>Russian journal of non-ferrous metals</title><addtitle>Russ. J. Non-ferrous Metals</addtitle><description>The rapid development of the alumina industry in China has led to the depletion of high-quality bauxite resources. The proposed calcification-carbonation method (CCM) can convert the middle silicon of bauxite into CaO · SiO
2
and CaCO
3
, thus enabling clean and efficient utilization of low-grade resources. Since kaolinite is the main silicon-bearing mineral in low-grade bauxite, the transformation characteristics of kaolinite in the CCM process are investigated in this research. The experimental results indicate that temperature has a significant effect on both the calcification process and the carbonation process. The theoretical alumina-to-silica ratio (
A
/
S
) in the reacted residue can be lowered to 0.55 using the CCM process used to treat gibbsite, resulting in a recovery ratio of alumina approximately 15% greater than that of the Bayer process. More than 65% of the alumina can be recovered through the CCM. The Na
2
O content in the slag from the CCM meets the requirements of the cement industry, and cleaner production of alumina can be enabled by the CCM.</description><subject>Alumina</subject><subject>Aluminum oxide</subject><subject>Bauxite</subject><subject>Bayer process</subject><subject>Calcification</subject><subject>Calcium carbonate</subject><subject>Carbonation</subject><subject>Chemistry and Materials Science</subject><subject>Depletion</subject><subject>Gibbsite</subject><subject>Kaolinite</subject><subject>Materials Science</subject><subject>Metallic Materials</subject><subject>Metallurgy of Nonferrous Metals</subject><subject>Silicon dioxide</subject><issn>1067-8212</issn><issn>1934-970X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><recordid>eNp1kE9LxDAQxYMouK5-AG8Fz9XJv6Y9LmVdxQUFFbyVNE0kS9usSSv67U2t4EE8zYP5vTfMQ-gcwyXFQK8eMWQiJ5gQAAoExAFa4IKytBDwchh1XKfT_hidhLAD4LzgxQJtVu3Y2V4m64_BSzVY1yfGuy65k661vR108m5lUspWWWOVnIC0lL52_bdOHrxTOoRTdGRkG_TZz1yi5-v1U3mTbu83t-VqmyrK-ZDmGBrc5A3oQhhOlDacGpYJlkvCBGE1zThj3NS8EZoVRDY5xcwQ00Qp65wu0cWcu_fubdRhqHZu9H08WREW38ZUYB4pPFPKuxC8NtXe2076zwpDNfVV_ekresjsCZHtX7X_Tf7f9AVShGvn</recordid><startdate>20200501</startdate><enddate>20200501</enddate><creator>Zimu Zhang</creator><creator>Lu, Guozhi</creator><creator>Chen, Yongchao</creator><creator>Zhang, Tingan</creator><creator>Chao, Xi</creator><creator>Chen, Yang</creator><creator>Wang, Yanxiu</creator><creator>Liu, Yan</creator><general>Pleiades Publishing</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>20200501</creationdate><title>Alumina Extraction from Kaolinite via Calcification-Carbonation Process</title><author>Zimu Zhang ; Lu, Guozhi ; Chen, Yongchao ; Zhang, Tingan ; Chao, Xi ; Chen, Yang ; Wang, Yanxiu ; Liu, Yan</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c355t-810d1d8d0e97f52cef53f46748a24724b365445fb5d7e492ad8314f2fd2adab83</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>Alumina</topic><topic>Aluminum oxide</topic><topic>Bauxite</topic><topic>Bayer process</topic><topic>Calcification</topic><topic>Calcium carbonate</topic><topic>Carbonation</topic><topic>Chemistry and Materials Science</topic><topic>Depletion</topic><topic>Gibbsite</topic><topic>Kaolinite</topic><topic>Materials Science</topic><topic>Metallic Materials</topic><topic>Metallurgy of Nonferrous Metals</topic><topic>Silicon dioxide</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Zimu Zhang</creatorcontrib><creatorcontrib>Lu, Guozhi</creatorcontrib><creatorcontrib>Chen, Yongchao</creatorcontrib><creatorcontrib>Zhang, Tingan</creatorcontrib><creatorcontrib>Chao, Xi</creatorcontrib><creatorcontrib>Chen, Yang</creatorcontrib><creatorcontrib>Wang, Yanxiu</creatorcontrib><creatorcontrib>Liu, Yan</creatorcontrib><collection>CrossRef</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Russian journal of non-ferrous metals</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Zimu Zhang</au><au>Lu, Guozhi</au><au>Chen, Yongchao</au><au>Zhang, Tingan</au><au>Chao, Xi</au><au>Chen, Yang</au><au>Wang, Yanxiu</au><au>Liu, Yan</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Alumina Extraction from Kaolinite via Calcification-Carbonation Process</atitle><jtitle>Russian journal of non-ferrous metals</jtitle><stitle>Russ. J. Non-ferrous Metals</stitle><date>2020-05-01</date><risdate>2020</risdate><volume>61</volume><issue>3</issue><spage>248</spage><epage>256</epage><pages>248-256</pages><issn>1067-8212</issn><eissn>1934-970X</eissn><abstract>The rapid development of the alumina industry in China has led to the depletion of high-quality bauxite resources. The proposed calcification-carbonation method (CCM) can convert the middle silicon of bauxite into CaO · SiO
2
and CaCO
3
, thus enabling clean and efficient utilization of low-grade resources. Since kaolinite is the main silicon-bearing mineral in low-grade bauxite, the transformation characteristics of kaolinite in the CCM process are investigated in this research. The experimental results indicate that temperature has a significant effect on both the calcification process and the carbonation process. The theoretical alumina-to-silica ratio (
A
/
S
) in the reacted residue can be lowered to 0.55 using the CCM process used to treat gibbsite, resulting in a recovery ratio of alumina approximately 15% greater than that of the Bayer process. More than 65% of the alumina can be recovered through the CCM. The Na
2
O content in the slag from the CCM meets the requirements of the cement industry, and cleaner production of alumina can be enabled by the CCM.</abstract><cop>Moscow</cop><pub>Pleiades Publishing</pub><doi>10.3103/S1067821220030207</doi><tpages>9</tpages></addata></record> |
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| subjects | Alumina Aluminum oxide Bauxite Bayer process Calcification Calcium carbonate Carbonation Chemistry and Materials Science Depletion Gibbsite Kaolinite Materials Science Metallic Materials Metallurgy of Nonferrous Metals Silicon dioxide |
| title | Alumina Extraction from Kaolinite via Calcification-Carbonation Process |
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