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利用制革污泥制备陶瓷色料
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摘要
本文主要介绍了以球磨洗涤干燥后的制革污泥残渣作为色料原料,添加少量的化工原料,通过固相烧结法合成黑色和绿色陶瓷色料的工艺方案。探究铬渣加入量以及金属氧化物比例对合成色料性能的影响。通过XRD、SEM、XRF以及测色仪等手段对所制备色料的性能进行表征。结果表明,加入45wt%的铬渣,在1200℃下合成的黑色色料,具有结晶度好,颗粒尺寸分布均匀,晶粒较小,釉面呈色效果好等特点。黄色晶体相(Mg(FeAl)O_4)对合成绿色颜料显色具有影响,可以通过添加Co2O3解决这一问题。随着Co_2O_3用量的增加,色料颜色逐渐由黄绿色向蓝绿色过渡,当Co_2O_3添加量为~2wt%时,色料样品显色与以纯Cr_2O_3为原料制备色料显色相近。该工艺方案绿色环保,对资源循环利用以及经济社会的可持续发展具有重要的意义。
This paper mainly introduces the process to prepare black and green ceramic pigment by solid state sintering method with tannery sludge and other chemical resources as raw material.We studied the dffect of chromium slag and metal oxide ratio on the properties of synthetic pigments.The performance of prepared pigment were characterized by XRD,SEM,XRF and color measurement instrument.The results showed that the black pigment chromium with 45wt%slag added and prepared at 1200 Celsius degree,processed good crystallinity,particle size distribution,smaller grain size,good glaze color.Yellow crystal phase(Mg(FeAl)O_4) has a significant effect on the synthesis of green pigments,which can be solved by the addition of CO_2O_3.With the increase of Co_2O_3,pigment color gradually transformed from yellow green to blue green.When the cobalt content was ~2wt%,the color developed was similar with the color produced from pure Cr_2O_3.This process was environmental and has important significance for the recycling of resources and social development.
引文
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