采用判灰仪判定水解灰点的应用研究
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摘要
采用分光光度法表征硫酸法钛白水解变灰过程,利用自主研发的灰点在线判定仪,针对外加晶种水解工艺,研究了一定波长范围内扫描波长和稀释比的变化对灰点透过率的影响,确定了较佳的扫描波长和稀释比。进一步对比研究了判灰仪和人工判定灰点对水解过程控制水平和过程能力的影响。结果表明,采用自主研发的判灰仪代替人工判灰,能够显著提升水解过程的控制水平和过程能力。
In this work,spectrophotometry was used to characterize the grey point of hydrolysis during titanium dioxide preparation via sulphate process.Employing the self-developed on-line grey point determination instrument,the effects of scanning wavelength at a certain range and dilution ratio on the transmittance at gray point were studied for the hydrolysis process within adding external seeds,and the optimum scanning wavelength and dilution ratio were determined.Furthermore,the influences of two methods of grey point judgement,the on-line determination by the instrument and artificial observation,on the control level and process capability of hydrolysis process were compared.The results show that the control level and process ability of hydrolysis process could be improved significantly by using the self-developed grey point detector instead of artificial observation.
In this work,spectrophotometry was used to characterize the grey point of hydrolysis during titanium dioxide preparation via sulphate process.Employing the self-developed on-line grey point determination instrument,the effects of scanning wavelength at a certain range and dilution ratio on the transmittance at gray point were studied for the hydrolysis process within adding external seeds,and the optimum scanning wavelength and dilution ratio were determined.Furthermore,the influences of two methods of grey point judgement,the on-line determination by the instrument and artificial observation,on the control level and process capability of hydrolysis process were compared.The results show that the control level and process ability of hydrolysis process could be improved significantly by using the self-developed grey point detector instead of artificial observation.
引文
[1] Santacesatia E.Kinetics of titanium dioxide precipitation by thermal hydrolysis[J].Journal of Colloid and Interface Science,1986,111(1):45-53.
[2] Zhou Rongfu,Shuai Dingxin.Detection and control of grey point in hydrolysis process of titanium dioxide production [J].Metallurgical Automation,2012,1:269-272.(周荣富,帅定新.钛白粉水解工序变化点的检测与控制[J].冶金自动化,2012,1:269-272.)
[3] Tian C X,Huang,S H.Anatase TiO2 white pigment production from unenriched industrial titanyl sulfate solution via short sulfate process[J].Dyes and Pigments,2012,96:609-613.
[4] Piccolo L,Paolinelli A.Process for the hydrolysis of titanium sulphate solutions,US:4014977 [P].1977-03-29.
[5] Jin Bin.Systematic study on improving the quality of anatase titanium dioxide produced by sulphate process [J].China Coating.2010,25:31-35.(金斌.提高硫酸法生产锐钛型钛白粉品质的系统性研究[J].中国涂料,2010,25:31-35.)
[6] Tian Congxue,Hu Hongfei.The determination method of grey point in the titanium pigments production,China Patent:CN201010116852.9[P].2015-10-15(田从学,胡鸿飞,杜剑桥,等.钛白生产中变灰点的判定方法,中国专利:CN201010116852.9 [P].2015-10-15)
[7] Tian Congxue,Hu Hongfei.One kind of on-line grey point determination instrument in the titanium pigments production[P].China Patent:CN201010116856.7[P].2012-10-10(田从学,胡鸿飞,唐勇,等.一种钛白生产中在线变灰点判定装置,中国专利:CN201010116856.7[P].2012-10-10)
[8] Lu Ruifang.The analysis of the impact of hydrolysis process on the gray point [J].Iron Steel Vanadium Titanium,2017,38(6):27-32.(路瑞芳.水解工艺对灰点判定的影响[J].钢铁钒钛,2017,38(6):27-32.)
[9] He Zhen.Six Sigma Management[M].The third edition .Beijing:People's University of China Press,2014:175-176.(何帧.六西格玛管理[M].第三版.北京:中国人民大学出版社,2014:175-176.)
[2] Zhou Rongfu,Shuai Dingxin.Detection and control of grey point in hydrolysis process of titanium dioxide production [J].Metallurgical Automation,2012,1:269-272.(周荣富,帅定新.钛白粉水解工序变化点的检测与控制[J].冶金自动化,2012,1:269-272.)
[3] Tian C X,Huang,S H.Anatase TiO2 white pigment production from unenriched industrial titanyl sulfate solution via short sulfate process[J].Dyes and Pigments,2012,96:609-613.
[4] Piccolo L,Paolinelli A.Process for the hydrolysis of titanium sulphate solutions,US:4014977 [P].1977-03-29.
[5] Jin Bin.Systematic study on improving the quality of anatase titanium dioxide produced by sulphate process [J].China Coating.2010,25:31-35.(金斌.提高硫酸法生产锐钛型钛白粉品质的系统性研究[J].中国涂料,2010,25:31-35.)
[6] Tian Congxue,Hu Hongfei.The determination method of grey point in the titanium pigments production,China Patent:CN201010116852.9[P].2015-10-15(田从学,胡鸿飞,杜剑桥,等.钛白生产中变灰点的判定方法,中国专利:CN201010116852.9 [P].2015-10-15)
[7] Tian Congxue,Hu Hongfei.One kind of on-line grey point determination instrument in the titanium pigments production[P].China Patent:CN201010116856.7[P].2012-10-10(田从学,胡鸿飞,唐勇,等.一种钛白生产中在线变灰点判定装置,中国专利:CN201010116856.7[P].2012-10-10)
[8] Lu Ruifang.The analysis of the impact of hydrolysis process on the gray point [J].Iron Steel Vanadium Titanium,2017,38(6):27-32.(路瑞芳.水解工艺对灰点判定的影响[J].钢铁钒钛,2017,38(6):27-32.)
[9] He Zhen.Six Sigma Management[M].The third edition .Beijing:People's University of China Press,2014:175-176.(何帧.六西格玛管理[M].第三版.北京:中国人民大学出版社,2014:175-176.)