摘要:
以低浓度工业钛液水解所制的偏钛酸为原料,采用L27(313)正交试验考察盐处理剂加量(锌盐、钾盐、磷盐)和煅烧段最高温度的正交交互作用影响,并进行金红石型钛白粉制备过程中盐处理煅烧工艺正交优化试验,检测所得样品的消色力、蓝相、亮度和粒度,并用SEM、TEM对煅烧样品进行表征。最佳盐处理煅烧条件为:锌盐加量0.30%,钾盐加量0.60%,磷盐加量0.12%,煅烧段最高段温度850℃。该条件下,所得金红石型钛白粉样品的消色力、蓝相、亮度值分别为1713、3.07、96.88,粒度为0.28μm。盐处理剂之间、盐处理剂与煅烧强度之间存在着不同程度的交互影响。
Abstract:
The orthogonal mutual influences of the amount of salt treatment agents (zinc,potassium and phosphate salt) and the highest calcination temperature on the preparation of rutile titanium white pigment were investigated by L27(313) orthogonal experiments,using meta-titanic acid hydrolyzing from the industrial titanyl sulfate solution of low concentration as raw material.The orthogonal optimizing experiments for preparing rutile titanium white pigment were carried out based on the salt processing and calcination.The achromic ability,blue phase,whiteness and granularity of the calcined samples were detected and SEM,TEM were employed for the characterizations.The optimum conditions are zinc salt amount of 0.30%,potassium salt amount of 0.60%,phosphate salt amount of 0.12% and the highest calcination temperature of 850℃.The achromic ability,blue phase,whiteness and granularity of the rutile titanium white pigment by the optimum conditions are respectively 1713,3.07,96.88 and 0.28 um.It shows that the orthogonal mutual influences with different degrees exist between the salt treatment agents and calcination strength,and also among the salt treatment agents themselves.
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