Analysis of factors influencing the sedimentation height of hydrolyzed metatitanic acid
Based on the production data of a certain titanium dioxide factory,the influence of the sedi-mentation height of metatitanic acid on its particle size distribution and titanium dioxide pigment prop-erties was statistically analyzed.The results show that with the increase of sedimentation height,the D50 of metatitanate shows an increasing trend,while the Tcs and Scx of titanium dioxide pigment show a decreasing trend,and the average particle size shows an increasing trend.Controlling the sedimentation height of titanium dioxide below 130 mm can obtain titanium dioxide with better pigment properties.The experimental results show that the TiO2 concentration,F value,seed addition,and first boiling hold-ing time of titanium liquid all have a significant impact on the sedimentation height and D50 of metati-tanic acid.As the concentration of TiO2 increases,the sedimentation height and D50 of metatitanic acid show a decreasing trend.As the F value increases,the sedimentation height of metatitanic acid and D50 show an increasing trend.With the increase of seed addition,the sedimentation height of metatitanic acid shows a decreasing trend.With the extension of the first boiling insulation time,the sedimentation height of metatitanic acid shows a trend of first increasing and then decreasing.
TiO2metatitanic acidhydrolysissedimentation heightparticle size distribution