.58· 工程科学学报，第40卷，第1期 (3)铝酸钠溶液中草酸钠晶体的附聚物为放射 ate and oxalate pollutants in the Bayer process using thermal and 状或伞状，其附聚起始点在其晶体较长一侧的两端， chemical techniques.Hydrometallurgy,2015,154:137 形成中心放射状晶簇或类晶球.草酸钠的结品习性 [9]Mi QQ,LiJQ,Jin HX,et al.Removal of organic from industrial sodium aluminate solution by crystallization.Hydrometall China, 为“一向延伸” 2013,32(4):266 (4)一部分草酸钠晶体呈柱状、纤维状、板条 (米秋秋，李军旗，金会心，等。结品法脱除某铝酸钠溶液中 状、厚板状等覆盖在氢氧化铝表面，一部分以单个晶 的有机物.湿法冶金，2013.，32(4)：266) 体或晶簇的形式夹杂在氢氧化铝颗粒的间隙.草酸 [10]Chen W M,Guo J Q,Chen X G.Study of the removal of sodium 钠在氢氧化铝表面或颗粒间隙结品析出，降低氢氧 oxalate from industrial sodium aluminate solution by crystallization process.Light Met,2008(11):12 化铝附聚时黏结作用的效率，使氢氧化铝二次成核 (陈文汨，郭金权，陈学刚.结品法去除工业铝酸钠溶液中 增加，细粒子数增多，同时严重阻碍氢氧化铝的附 草酸钠的研究.轻金属，2008(11)：12) 聚，这是其造成氢氧化铝粒度细化的主要原因. [11]Fu W,Vaughan J,Gillespie A,et al.Mechanisms of polyacry- late modified sodium oxalate crystallization from highly alkaline 参考文献 solutions.Cryst Growth Des,2016,16(3):1519 [1]Machold T,Laird D W,Rowen CC,et al.Decomposition of Ba- [12]Li X B,Xu W,Zhang Y T,et al.Establishment and application yer process organics:phenolates,polyalcohols,and additional car of calculation model of sodium oxalate solubility in sodium alumi- boxylates.Hydrometallurgy.2011.107(34):68 nate solution.Chin J Nonferrous Met,2014,24(10):2652 [2]Cai C.The Reaction Beharior Research of Organic Matter in High (李小斌，徐旺，张玉通，等.铝酸钠溶液中草酸钠溶解度计 Pressure Dissolring of Bayer Process Dissertation ]Guiyang: 算模型的建立及应用.中国有色金属学报，2014,24(10)： Guizhou University,2016 2652) (蔡灿.拜耳法高压溶出过程中有机物的反应行为研究[学位 [13]Shang YZ.Liu HL.Xia J B,et al.Preparation and character- 论文].贵阳：贵州大学，2016) ization of flowerlike Zn.Chin J Process Eng,2004,4(Suppl): [3]Power G,Loh JS C,Wajon J E,et al.A review of the determina- 200 tion of organic compounds in Bayer process liquors.Anal Chim Ac- (尚亚卓，刘洪来，夏军保，等.花状Z0的水热合成与表 a,2011,689(1):8 征.过程工程学报，2004,4（增刊）：200) [4]Xu Q Y.The effect and removal method of oxlate in alumina pro- [14]Tang S J.Influence of Small Molecule Organic Acid and Silicon duction process//China Aluminium Metallurgy Technology Semi- Acid Impurities to the Seeded Precipition in Sodium Aluminate So- nar.Guiyang,2013:92 lution Dissertation].Changsha:Central South University,2008 (徐清燕.拜耳法生产氧化铝中有机物的影响及排除方法/ (唐素娟.小分子有机酸杂质及硅对铝酸钠溶液种分过程的 第十五届中国科协年会第15分会场：全国铝冶金技术研讨 影响[学位论文].长沙：中南大学，2008) 会.贵阳，2013：92) [15]Rosengvist J,Axe K,Sjoberg S,et al.Adsorption of dicarboxy- [5]Power G,Loh J S C.Vemon C.Organic compounds in the pro- lates on nano-sized gibbsite particles:effects of ligand structure cessing of lateritic bauxites to alumina Part 2:effects of organics in on bonding mechanisms.Colloids Surf A,2003,220(1-3):91 the Bayer process.Hydrometallurgy,2012.127-128:125 [16]Yin J G.Study on the Seeded Agglomeration Process of Supersatu- [6]Zhang B Y,Bi S W,Pan X L,et al.The influence of accumula- rated Sodium Aluminate Liquors and Its Enhancement Disserta- tion of organics on alumina production in low temperature Bayer tion].Changsha:Central South University,2007 process.Light Met,2016(11):14 (尹建国.过饱和铝酸钠溶液种分附聚过程及其强化[学位 (张佰永，毕诗文，潘晓林，等。低温拜耳法过程有机物的积 论文].长沙：中南大学，2007) 累和对氧化铝生产的影响.轻金属，2016(11)：14) [17]Seyssiecq I,Veesler S,Mangin D,et al.Modelling gibbsite ag- [7]Fang H.Song Y L.Study on removal of sodium oxalate by lime glomeration in a constant supersaturation crystallizer.Chem Eng caustizing method.Nonferrous Met Extr Metall),2017(1):36 Sc,2000,55(23):5565 (房辉，宋玉来.石灰苛化法脱除草酸钠的研究.有色金属： [18]Seyssiecg I,Veesler S,Boistelle R,et al.Agglomeration of 冶炼部分，2017(1)：36) gibbsite Al (OH)3 crystals in Bayer liquors.Influence of the [8]Mahmoudian M,Ghaemi A,Shahhosseini S.Removal of carbon- process parameters.Chem Eng Sci,1998,53(12):2177工程科学学报,第 40 卷,第 1 期 (3)铝酸钠溶液中草酸钠晶体的附聚物为放射 状或伞状,其附聚起始点在其晶体较长一侧的两端, 形成中心放射状晶簇或类晶球. 草酸钠的结晶习性 为“一向延伸冶. (4)一部分草酸钠晶体呈柱状、纤维状、板条 状、厚板状等覆盖在氢氧化铝表面,一部分以单个晶 体或晶簇的形式夹杂在氢氧化铝颗粒的间隙. 草酸 钠在氢氧化铝表面或颗粒间隙结晶析出,降低氢氧 化铝附聚时黏结作用的效率,使氢氧化铝二次成核 增加,细粒子数增多,同时严重阻碍氢氧化铝的附 聚,这是其造成氢氧化铝粒度细化的主要原因. 参 考 文 献 [1] Machold T, Laird D W, Rowen C C, et al. Decomposition of Ba鄄 yer process organics: phenolates, polyalcohols, and additional car鄄 boxylates. Hydrometallurgy, 2011, 107(3鄄4): 68 [2] Cai C. The Reaction Behavior Research of Organic Matter in High Pressure Dissolving of Bayer Process [ Dissertation ]. Guiyang: Guizhou University, 2016 (蔡灿. 拜耳法高压溶出过程中有机物的反应行为研究[学位 论文]. 贵阳: 贵州大学, 2016) [3] Power G, Loh J S C, Wajon J E, et al. A review of the determina鄄 tion of organic compounds in Bayer process liquors. Anal Chim Ac鄄 ta, 2011, 689(1): 8 [4] Xu Q Y. The effect and removal method of oxlate in alumina pro鄄 duction process/ / China Aluminium Metallurgy Technology Semi鄄 nar. Guiyang, 2013: 92 (徐清燕. 拜耳法生产氧化铝中有机物的影响及排除方法/ / 第十五届中国科协年会第 15 分会场: 全国铝冶金技术研讨 会. 贵阳, 2013: 92) [5] Power G, Loh J S C, Vernon C. Organic compounds in the pro鄄 cessing of lateritic bauxites to alumina Part 2: effects of organics in the Bayer process. Hydrometallurgy, 2012, 127鄄128: 125 [6] Zhang B Y, Bi S W, Pan X L, et al. The influence of accumula鄄 tion of organics on alumina production in low temperature Bayer process. Light Met, 2016(11): 14 (张佰永, 毕诗文, 潘晓林, 等. 低温拜耳法过程有机物的积 累和对氧化铝生产的影响. 轻金属, 2016(11): 14) [7] Fang H, Song Y L. Study on removal of sodium oxalate by lime caustizing method. Nonferrous Met (Extr Metall), 2017(1): 36 (房辉, 宋玉来. 石灰苛化法脱除草酸钠的研究. 有色金属: 冶炼部分, 2017(1): 36) [8] Mahmoudian M, Ghaemi A, Shahhosseini S. Removal of carbon鄄 ate and oxalate pollutants in the Bayer process using thermal and chemical techniques. Hydrometallurgy, 2015, 154: 137 [9] Mi Q Q, Li J Q, Jin H X, et al. Removal of organic from industrial sodium aluminate solution by crystallization. Hydrometall China, 2013, 32(4): 266 (米秋秋, 李军旗, 金会心, 等. 结晶法脱除某铝酸钠溶液中 的有机物. 湿法冶金, 2013, 32(4): 266) [10] Chen W M, Guo J Q, Chen X G. Study of the removal of sodium oxalate from industrial sodium aluminate solution by crystallization process. Light Met, 2008(11): 12 (陈文汨, 郭金权, 陈学刚. 结晶法去除工业铝酸钠溶液中 草酸钠的研究. 轻金属, 2008(11): 12) [11] Fu W, Vaughan J, Gillespie A, et al. Mechanisms of polyacry鄄 late modified sodium oxalate crystallization from highly alkaline solutions. Cryst Growth Des, 2016, 16(3): 1519 [12] Li X B, Xu W, Zhang Y T, et al. Establishment and application of calculation model of sodium oxalate solubility in sodium alumi鄄 nate solution. Chin J Nonferrous Met, 2014, 24(10): 2652 (李小斌, 徐旺, 张玉通, 等. 铝酸钠溶液中草酸钠溶解度计 算模型的建立及应用. 中国有色金属学报, 2014, 24 (10): 2652) [13] Shang Y Z, Liu H L, Xia J B, et al. Preparation and character鄄 ization of flowerlike ZnO. Chin J Process Eng, 2004, 4(Suppl): 200 (尚亚卓, 刘洪来, 夏军保, 等. 花状 ZnO 的水热合成与表 征. 过程工程学报, 2004, 4(增刊): 200) [14] Tang S J. Influence of Small Molecule Organic Acid and Silicon Acid Impurities to the Seeded Precipition in Sodium Aluminate So鄄 lution [Dissertation]. Changsha: Central South University, 2008 (唐素娟. 小分子有机酸杂质及硅对铝酸钠溶液种分过程的 影响[学位论文]. 长沙: 中南大学, 2008) [15] Rosenqvist J, Axe K, Sj觟berg S, et al. Adsorption of dicarboxy鄄 lates on nano鄄sized gibbsite particles: effects of ligand structure on bonding mechanisms. Colloids Surf A, 2003, 220(1鄄3): 91 [16] Yin J G. Study on the Seeded Agglomeration Process of Supersatu鄄 rated Sodium Aluminate Liquors and Its Enhancement [Disserta鄄 tion]. Changsha: Central South University, 2007 (尹建国. 过饱和铝酸钠溶液种分附聚过程及其强化[学位 论文]. 长沙: 中南大学, 2007) [17] Seyssiecq I, Veesler S, Mangin D, et al. Modelling gibbsite ag鄄 glomeration in a constant supersaturation crystallizer. Chem Eng Sci, 2000, 55(23): 5565 [18] Seyssiecq I, Veesler S, Boistelle R, et al. Agglomeration of gibbsite Al ( OH)3 crystals in Bayer liquors. Influence of the process parameters. Chem Eng Sci, 1998, 53(12): 2177 ·58·