微扰动平推流氧化铝晶种分解技术研究与实践应用
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摘要
针对传统氧化铝晶种分解工艺长期采用全混合分解强力搅拌物料的技术路线,分析了当前国内外晶种分解工艺技术与装备能耗高、投入大的原因。通过研究晶种分解动力学与流体力学模拟计算,提出了氧化铝晶种分解过程中可以减弱搅拌强度,简化装备结构,从而实现节能降耗,节省投资的新路径。开发出微扰动平推流氧化铝晶种分解新技术及其装备,并应用于工业生产。结果与传统分解槽相比生产过程平均节能42.5%;分解槽运行周期平均延长2.5个月;底部结疤高度由2.5m降为0.5m;产品产出率和粒度分布等各项指标正常。
In a long term,overall-mixing decomposition and strong agitation mode is employed in the traditional alumina seed crystal decomposition technology.In this paper,the causes of the high energy consumption and high investment cost of the seed crystal decomposition process technology and equipment at home and abroad are studied.By studying the decomposition kinetics of the seed crystal and the simulation of fluid mechanics,a new path is proposed to reduce the stirring strength and simplify the equipment structure during the decomposition process of alumina seed crystals,thereby achieving energy saving and saving investment.Based on this new technique,a new alumina seed crystal decomposition technique and equipment referred to as "micro-perturbation flat-flowing"is presented and applied in the industrial level,correspondingly.The results of industrial application showed that the average power saving rate of 42.5% could be reached compared with the traditional decomposition tank,and the equipment operation cycle was extended by 2.5 months on average;the bottom crusting height within the decomposition tank was reduced from 2.5 to 0.5 m;the output yield of particle size distribution were normal.micro-perturbation,push-pull flow;seed crystal decomposition;industrial application
In a long term,overall-mixing decomposition and strong agitation mode is employed in the traditional alumina seed crystal decomposition technology.In this paper,the causes of the high energy consumption and high investment cost of the seed crystal decomposition process technology and equipment at home and abroad are studied.By studying the decomposition kinetics of the seed crystal and the simulation of fluid mechanics,a new path is proposed to reduce the stirring strength and simplify the equipment structure during the decomposition process of alumina seed crystals,thereby achieving energy saving and saving investment.Based on this new technique,a new alumina seed crystal decomposition technique and equipment referred to as "micro-perturbation flat-flowing"is presented and applied in the industrial level,correspondingly.The results of industrial application showed that the average power saving rate of 42.5% could be reached compared with the traditional decomposition tank,and the equipment operation cycle was extended by 2.5 months on average;the bottom crusting height within the decomposition tank was reduced from 2.5 to 0.5 m;the output yield of particle size distribution were normal.micro-perturbation,push-pull flow;seed crystal decomposition;industrial application
引文
[1]王熙慧,于海燕,程涛,等.高浓度铝酸钠溶液生产砂状氧化铝的新工艺[J].轻金属,2008(8):20-23.WANG Xihui,YU Haiyan,CHENG Tao,et al.New process for producing sandy alumina with high concentration sodium aluminate solution[J].Light Metals,2008(8):20-23.
[2]武建强,董保才.大型机械搅拌分解槽运行效果评价[J].轻金属,2000(3):13-16.WU Jianqiang,DONG Baochai.Evaluation of operation effect of large mechanical stirring decomposition tank[J].Light Metals,2000(3):13-16.
[3]戴红琳.机械搅拌装置在氧化铝分解槽设计中的应用[J].中国金属通报,2017(6):58-59.DAI Honglin.Application of mechanical stirring device in the design of alumina decomposition tank[J].China Metal Bulletin,2017(6):58-59.
[4]陈胜文.氧化铝分解槽搅拌系统改造[J].设备管理与维修,2011(9):140-141.CHEN Shengwen.Alumina decomposition tank mixing system transformation[J].Equipment Management and Maintenance,2011(9):140-141.
[5]高慧民,牟晓红.新型机械搅拌在料浆槽上的应用[J].矿业研究与开发,2003(12):158-160.GAO Huimin, MU Xiaohong.Application of new mechanical stirring in slurry tank[J].Mining Research and Development,2003(12):158-160.
[6]甘霖,吴海文,黄校熙,等.基于微扰动平推流搅拌技术的氧化铝种分生产实践[J].轻金属,2015(5):15-17.GAN Lin,WU Haiwen,HUANG Xiaoxi.Production practice of alumina seeds based on perturbation and dynamic pushing stirring technology[J].Light Metals,2015(5):15-17.
[7]丁元法,苏向东,胡大乔,等.无搅拌氢氧化铝晶种分解槽中的固相分散研究[J].昆明理工大学学报(自然科学版),2014(2):5-10.DING Yuanfa,SU Xiangdong,HU Daqiao,et al.Study on solid phase dispersion in undissolved aluminum hydroxide crystal decomposition tanks[J].Journal of Kunming University of Science and Technology(Natural Science),2014(2):5-10.
[8]雷玉办,苏向东,丁元法,等.搅拌对氢氧化铝晶种分解率的影响[J].贵州科学,2016(2):91-94.LEI Yuban,SU Xiangdong,Ding Yuanfa,et al.Effect of stirring on the decomposition rate of aluminum hydroxide seeds[J].Guizhou Science,2016(2):91-94.
[2]武建强,董保才.大型机械搅拌分解槽运行效果评价[J].轻金属,2000(3):13-16.WU Jianqiang,DONG Baochai.Evaluation of operation effect of large mechanical stirring decomposition tank[J].Light Metals,2000(3):13-16.
[3]戴红琳.机械搅拌装置在氧化铝分解槽设计中的应用[J].中国金属通报,2017(6):58-59.DAI Honglin.Application of mechanical stirring device in the design of alumina decomposition tank[J].China Metal Bulletin,2017(6):58-59.
[4]陈胜文.氧化铝分解槽搅拌系统改造[J].设备管理与维修,2011(9):140-141.CHEN Shengwen.Alumina decomposition tank mixing system transformation[J].Equipment Management and Maintenance,2011(9):140-141.
[5]高慧民,牟晓红.新型机械搅拌在料浆槽上的应用[J].矿业研究与开发,2003(12):158-160.GAO Huimin, MU Xiaohong.Application of new mechanical stirring in slurry tank[J].Mining Research and Development,2003(12):158-160.
[6]甘霖,吴海文,黄校熙,等.基于微扰动平推流搅拌技术的氧化铝种分生产实践[J].轻金属,2015(5):15-17.GAN Lin,WU Haiwen,HUANG Xiaoxi.Production practice of alumina seeds based on perturbation and dynamic pushing stirring technology[J].Light Metals,2015(5):15-17.
[7]丁元法,苏向东,胡大乔,等.无搅拌氢氧化铝晶种分解槽中的固相分散研究[J].昆明理工大学学报(自然科学版),2014(2):5-10.DING Yuanfa,SU Xiangdong,HU Daqiao,et al.Study on solid phase dispersion in undissolved aluminum hydroxide crystal decomposition tanks[J].Journal of Kunming University of Science and Technology(Natural Science),2014(2):5-10.
[8]雷玉办,苏向东,丁元法,等.搅拌对氢氧化铝晶种分解率的影响[J].贵州科学,2016(2):91-94.LEI Yuban,SU Xiangdong,Ding Yuanfa,et al.Effect of stirring on the decomposition rate of aluminum hydroxide seeds[J].Guizhou Science,2016(2):91-94.