Extract of high-whiteness aluminum hydroxide from residues of novel process of magnesium production by aluminothermic reduction

doi:10.3969/j.issn.0438-1157.2013.03.045

CIESC Journal ›› 2013, Vol. 64 ›› Issue (3): 1106-1111.DOI: 10.3969/j.issn.0438-1157.2013.03.045

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Extract of high-whiteness aluminum hydroxide from residues of novel process of magnesium production by aluminothermic reduction

DI Yuezhong, WANG Zhihui, WANG Yaowu, PENG Jianping, FENG Naixiang

School of Materials and Metallurgy, Northeastern University, Shenyang 110819, Liaoning, China

Received:2012-08-19 Revised:2012-10-12 Online:2013-03-05 Published:2013-03-05
Supported by:
supported by the Liaoning Province Magnesium Materials Industry High-tech Research and Development Project(MYF2011-34)and the Liaoning Province Key Industry Program(2011221002).

新法铝热炼镁还原渣提取高白氢氧化铝

狄跃忠, 王智慧, 王耀武, 彭建平, 冯乃祥

东北大学材料与冶金学院,辽宁沈阳 110819

通讯作者: 狄跃忠(1983—),男,博士,讲师。
作者简介:狄跃忠(1983—),男,博士,讲师。
基金资助:
辽宁省镁质材料行业高新技术研发项目(MYF2011-34);辽宁省工业攻关项目(2011221002)。

Abstract

Abstract: The novel process producing magnesium metal using vacuum aluminothermic reduction,which utilizes dolomite and magnesite as raw materials and aluminum powder as reductant,produces reducing slag containing-rich CaO·2Al₂O₃.The reducing residue can be solved by a mixture solution of sodium hydroxide and sodium carbonate,and a solution of sodium aluminate is produced which can be decomposed by CO₂ to obtain aluminum hydroxide.For the production process of aluminum hydroxide,effects of process parameters on leaching rate of alumina are investigated systematically and the performance of aluminum hydroxide obtained was detected.The results show that the alumina leaching rate from the residue is above 85% under the conditions of NaOH concentration 80 g·L^-1,Na₂CO₃ concentration 110 g·L^-1,leaching temperature 95℃,leaching time 120min and L/S 6.Whiteness of aluminum hydroxide obtained carbonation precipitation at 50℃ is over 98,and average particle size is 26.98μm.

Key words: magnesium, reduction residue, leaching, carbonation precipitation, high-whiteness aluminum hydroxide

摘要： 新法铝热炼镁工艺以白云石和菱镁石为原料、以铝粉为还原剂,在真空还原获得金属镁的同时得到富含CaO·2Al₂O₃的还原渣,该还原渣可通过氢氧化钠和碳酸钠的混合碱液溶出得到铝酸钠溶液,并通过碳酸化分解制备氢氧化铝。以该工艺所得还原渣为原料,系统地研究各溶出条件对氧化铝溶出率的影响,并对碳分所得氢氧化铝进行性能检测。结果表明,在氢氧化钠浓度80 g·L^-1、碳碱浓度110 g·L^-1、溶出时间120 min、溶出温度95℃、液固比为6的条件下,炼镁还原渣中氧化铝的溶出率在85%以上。氢氧化铝产品白度均大于98,平均粒径为26.98 μm,能够达到高白氢氧化铝的要求。

关键词: 镁, 还原渣, 溶出, 碳分, 高白氢氧化铝

CLC Number:

TF111.3

DI Yuezhong, WANG Zhihui, WANG Yaowu, PENG Jianping, FENG Naixiang. Extract of high-whiteness aluminum hydroxide from residues of novel process of magnesium production by aluminothermic reduction[J]. CIESC Journal, 2013, 64(3): 1106-1111.

狄跃忠, 王智慧, 王耀武, 彭建平, 冯乃祥. 新法铝热炼镁还原渣提取高白氢氧化铝[J]. 化工学报, 2013, 64(3): 1106-1111.

References 18

[1]	Robert E Brown.Environmental challenges for the magnesium industry//Magnesium Technology[M].Sillekens W H,Agnew S R,Neelameggham N R,Mathaudhu S N,eds.Hoboken :John Wiley & Sons,Inc.,2011:7-8
[2]	Minic D,Manasijevic D,Dokic J.Silicothermic reduction process in magnesium production[J].Journal of Thermal Analysis and Calorimetry,2008,92(2):411-415
[3]	Gao Feng(高枫),Nie Zuoren(聂祚仁),Wang Zhihong(王志宏),Zuo Tieyong(左铁镛).Resource depletion and environmental impact analysis of magnesium produced using Pidgeon process in China[J].The Chinese Journal of Nonferrous Metals(中国有色金属学报),2006,16(8):1456-1461
[4]	Xu Riyao(徐日遥),Liu Rongyi(刘荣义),Liu Hongzhuan(刘宏专).Energy-saving,consumption reducing and discharge abatement are the vitality of silicothermic reduction in magnesium metallurgy[J].Light Metals(轻金属),2009(1):45-49
[5]	Gao Feng,Nie Zuoren,Wang Zhihong,Gong Xianzheng,Zuo Tieyong.Life cycle assessment of primary magnesium production using the Pidgeon process in China[J].The International Journal of Life Cycle Assessment,2009,14(5):480-489
[6]	Ramakrishnan S,KoltunP.Global warming impact of the magnesium produced in China using the Pidgeon process[J].Resources Conservation and Recycling,2004,42(1):49-64
[7]	Yan Shouyi(闫守义).The current status and analysis of making magnesium by means of Pidgeon process in China[J].Light Metals(轻金属),2005,6:37-40
[8]	Feng Naixiang(冯乃祥),Wang Yaowu(王耀武).A method of producing magnesium by vacuum thermal reduction using magnesite and dolomite as materials[J].The Chinese Journal of Nonferrous Metals(中国有色金属学报),2011,21(10):2678-2686
[9]	Hu Wenxin,Feng Naixiang,Wang Yaowu.Magnesium production by vacuum aluminothermic reduction of a mixture of calcined dolomite and calcined magnesite//Magnesium Technology[M].Sillekens W H,Agnew S R,Neelameggham N R,Mathaudhu S N,eds.Hoboken :John Wiley & Sons,Inc.,2011:43-47
[10]	Wang Yaowu,Feng Naixiang,You Jing,Hu Wenxin,Peng Jianping,Di Yuezhong,Wang Zhihui.Study on extracting aluminum hydroxide from reduction slag of magnesium smelting by vacuum aluminothermic reduction//Light Metal[M].Hoboken:John Wiley & Sons,Inc.,2011:205-209
[11]	You Jing(尤晶),Wang Yaowu(王耀武),Feng Naixiang(冯乃祥).Study on the effect of fluoride on the alumina leaching rate of magnesium smelting reduction slag[J].Light Metals(轻金属),2012,3:46-49
[12]	Singh V K.Sintering study of calcium aluminate[J].Journal of Materials Science A,1996,31:5163-5168
[13]	Gawlicki M,Wczelik W,Pyzalski M.Studies on the hydration of calcium aluminates[J].Journal of Thermal Analysis,1984,29:1005-1008
[14]	Das S K,Mttra A,Das Poddar P K.Thermal analysis of hydrated calcium aluminates[J].Journal of Thermal Analysis,1996,47:765-768
[15]	Zhang Chengzhong(张程忠),Yu Haiyan(于海燕),Zhang Liqiang(张立强),Liu Xin(刘欣),Bi Shiwen(毕诗文).Mechanism for humic acid sodium to inhibit secondary reaction in clinker extraction process[J].Journal of Chemical Industry and Engineering(China)(化工学报),2008,59(2):526-527
[16]	Yu Haiyan(于海燕),Li Wencheng(李文成),Bi Shiwen(毕诗文),Wang Tao(王涛).Study on microstructure of high whiteness-aluminum hydroxide fillers[J].Journal of Northeastern University :Natural Science(东北大学学报:自然科学版),2010,31(7):995-998
[17]	Wu Fuyun(武福运),Feng Guozheng(冯国政).Study on non-metallurgical alumina production with carbonation decomposition process[J].Conservation and Utilization of Mineral Resources(矿产保护与利用),2002,3:48-50
[18]	Quan Kun(权昆),Liu Yaping(刘亚平),Li Xiaobin(李小斌),Wu Fuyun(武福运).The development and manufacture of super-fine aluminum hydroxide[J].Non-ferrous Mining and Metallurgy(有色矿冶),2004,20(4):48-54

Extract of high-whiteness aluminum hydroxide from residues of novel process of magnesium production by aluminothermic reduction

新法铝热炼镁还原渣提取高白氢氧化铝

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