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¡¶Secondary reaction mechanism of leaching process of calcium aluminate slag¡·£» Hui-lan SUN, Bo WANG, Jian-xin ZHANG, Shu-feng ZONG, Jia-jia LIU Transactions of Nonferrous Metals Society of China ÖйúÓÐÉ«½ðÊôѧ±¨(Ó¢Îİæ) Vol. 25 No. 4 April 2015 |
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4Â¥2015-07-05 22:27:52
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bensic: ½ð±Ò+10, ¡ï¡ï¡ï¡ï¡ï×î¼Ñ´ð°¸ 2015-07-05 22:27:32
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sunshan4379: LS-EPI+1, ¸ÐлӦÖú£¡ 2015-07-07 14:24:52
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bensic: ½ð±Ò+10, ¡ï¡ï¡ï¡ï¡ï×î¼Ñ´ð°¸ 2015-07-05 22:27:32
bensic: ½ð±Ò+40, ¡ï¡ï¡ï¡ï¡ï×î¼Ñ´ð°¸ 2015-07-07 13:37:31
sunshan4379: LS-EPI+1, ¸ÐлӦÖú£¡ 2015-07-07 14:24:52
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Secondary reaction mechanism of leaching process of calcium aluminate slag ×÷Õß:Sun, HL (Sun, Hui-lan)[ 1,2 ] ; Wang, B (Wang, Bo)[ 1,2 ] ; Zhang, JX (Zhang, Jian-xin)[ 1 ] ; Zong, SF (Zong, Shu-feng)[ 1 ] ; Liu, JJ (Liu, Jia-jia)[ 1 ] TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA ¾í: 25 ÆÚ: 4 Ò³: 1334-1340 DOI: 10.1016/S1003-6326(15)63732-3 ³ö°æÄê: APR 2015 ²é¿´ÆÚ¿¯ÐÅÏ¢ ÕªÒª SiO2 in calcium aluminate slag exists in the form of gamma-2CaO center dot SiO2 which is more stable than beta-2CaO center dot SiO2. However, it is decomposed by sodium carbonate solution during leaching process, leading to the secondary reaction. The extent of secondary reaction and reaction mechanism of calcium aluminate slag were studied using XRD. The results show that the decomposition rate of gamma-2CaO center dot SiO2 increases with the increase in leaching time and sodium carbonate concentration. The main products of secondary reaction are the mixture of hydrogarnet and sodium hydrate alumina silicate. SiO2 concentration rises firstly and then drops with the increase of leaching temperature. XRD results indicate that the stable product of secondary reaction at low temperature is hydrogarnet. But hydrogarnet is transformed into sodium hydrate alumina silicate at high temperature. Key words: calcium aluminate slag; secondary reaction; alumina; leaching ¹Ø¼ü´Ê ×÷Õ߹ؼü´Ê:calcium aluminate slag; secondary reaction; alumina; leaching KeyWords Plus:BEHAVIOR ×÷ÕßÐÅÏ¢ ͨѶ×÷ÕßµØÖ·: Wang, B (ͨѶ×÷Õß) ÏÔʾÔöÇ¿×éÖ¯ÐÅÏ¢µÄÃû³Æ Hebei Univ Sci & Technol, Sch Mat Sci & Engn, Shijiazhuang 050018, Peoples R China. µØÖ·: ÏÔʾÔöÇ¿×éÖ¯ÐÅÏ¢µÄÃû³Æ [ 1 ] Hebei Univ Sci & Technol, Sch Mat Sci & Engn, Shijiazhuang 050018, Peoples R China ÏÔʾÔöÇ¿×éÖ¯ÐÅÏ¢µÄÃû³Æ [ 2 ] Hebei Univ Sci & Technol, Hebei Key Lab Mat Near Net Forming Technol, Shijiazhuang 050018, Peoples R China µç×ÓÓʼþµØÖ·:wangbo1996@gmail.com »ù½ð×ÊÖúÖÂл »ù½ð×ÊÖú»ú¹¹ ÊÚȨºÅ National Natural Science Foundation of China 51104053 Natural Science Foundation of Hebei Province, China E2012208047 ²é¿´»ù½ð×ÊÖúÐÅÏ¢ ³ö°æÉÌ ELSEVIER SCIENCE BV, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS Àà±ð / ·ÖÀà Ñо¿·½Ïò:Metallurgy & Metallurgical Engineering Web of Science Àà±ð:Metallurgy & Metallurgical Engineering ÎÄÏ×ÐÅÏ¢ ÎÄÏ×ÀàÐÍ:Article ÓïÖÖ:English Èë²ØºÅ: WOS:000354034600039 ISSN: 1003-6326 eISSN: 2210-3384 ÆÚ¿¯ÐÅÏ¢ Impact Factor (Ó°ÏìÒò×Ó): Journal Citation Reports® ÆäËûÐÅÏ¢ IDS ºÅ: CH4WS Web of Science ºËÐĺϼ¯ÖÐµÄ "ÒýÓõIJο¼ÎÄÏ×": 20 Web of Science ºËÐĺϼ¯ÖÐµÄ "±»ÒýƵ´Î": 0 |

2Â¥2015-07-05 22:22:43
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sunshan4379: ½ð±Ò+3, ¸ÐлӦÖú£¡ 2015-07-07 14:25:24
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sunshan4379: ½ð±Ò+3, ¸ÐлӦÖú£¡ 2015-07-07 14:25:24
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Secondary reaction mechanism of leaching process of calcium aluminate slag ×÷Õß:Sun, HL (Sun, Hui-lan)[ 1,2 ] ; Wang, B (Wang, Bo)[ 1,2 ] ; Zhang, JX (Zhang, Jian-xin)[ 1 ] ; Zong, SF (Zong, Shu-feng)[ 1 ] ; Liu, JJ (Liu, Jia-jia)[ 1 ] TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA ¾í: 25 ÆÚ: 4 Ò³: 1334-1340 DOI: 10.1016/S1003-6326(15)63732-3 ³ö°æÄê: APR 2015 ²é¿´ÆÚ¿¯ÐÅÏ¢ ÕªÒª SiO2 in calcium aluminate slag exists in the form of gamma-2CaO center dot SiO2 which is more stable than beta-2CaO center dot SiO2. However, it is decomposed by sodium carbonate solution during leaching process, leading to the secondary reaction. The extent of secondary reaction and reaction mechanism of calcium aluminate slag were studied using XRD. The results show that the decomposition rate of gamma-2CaO center dot SiO2 increases with the increase in leaching time and sodium carbonate concentration. The main products of secondary reaction are the mixture of hydrogarnet and sodium hydrate alumina silicate. SiO2 concentration rises firstly and then drops with the increase of leaching temperature. XRD results indicate that the stable product of secondary reaction at low temperature is hydrogarnet. But hydrogarnet is transformed into sodium hydrate alumina silicate at high temperature. Key words: calcium aluminate slag; secondary reaction; alumina; leaching ¹Ø¼ü´Ê ×÷Õ߹ؼü´Ê:calcium aluminate slag; secondary reaction; alumina; leaching KeyWords Plus:BEHAVIOR ×÷ÕßÐÅÏ¢ ͨѶ×÷ÕßµØÖ·: Wang, B (ͨѶ×÷Õß) ÏÔʾÔöÇ¿×éÖ¯ÐÅÏ¢µÄÃû³Æ Hebei Univ Sci & Technol, Sch Mat Sci & Engn, Shijiazhuang 050018, Peoples R China. µØÖ·: ÏÔʾÔöÇ¿×éÖ¯ÐÅÏ¢µÄÃû³Æ [ 1 ] Hebei Univ Sci & Technol, Sch Mat Sci & Engn, Shijiazhuang 050018, Peoples R China ÏÔʾÔöÇ¿×éÖ¯ÐÅÏ¢µÄÃû³Æ [ 2 ] Hebei Univ Sci & Technol, Hebei Key Lab Mat Near Net Forming Technol, Shijiazhuang 050018, Peoples R China µç×ÓÓʼþµØÖ·:wangbo1996@gmail.com »ù½ð×ÊÖúÖÂл »ù½ð×ÊÖú»ú¹¹ ÊÚȨºÅ National Natural Science Foundation of China 51104053 Natural Science Foundation of Hebei Province, China E2012208047 ²é¿´»ù½ð×ÊÖúÐÅÏ¢ ³ö°æÉÌ ELSEVIER SCIENCE BV, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS Àà±ð / ·ÖÀà Ñо¿·½Ïò:Metallurgy & Metallurgical Engineering Web of Science Àà±ð:Metallurgy & Metallurgical Engineering ÎÄÏ×ÐÅÏ¢ ÎÄÏ×ÀàÐÍ:Article ÓïÖÖ:English Èë²ØºÅ: WOS:000354034600039 ISSN: 1003-6326 eISSN: 2210-3384 ÆÚ¿¯ÐÅÏ¢ Impact Factor (Ó°ÏìÒò×Ó): Journal Citation Reports® ÆäËûÐÅÏ¢ IDS ºÅ: CH4WS Web of Science ºËÐĺϼ¯ÖÐµÄ "ÒýÓõIJο¼ÎÄÏ×": 20 Web of Science ºËÐĺϼ¯ÖÐµÄ "±»ÒýƵ´Î": 0 |
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3Â¥2015-07-05 22:23:16
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5Â¥2015-07-05 22:34:37














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