本文报道了杂质元素、颗粒形状和大小、晶型结构等对锑白产品白度的影响。实验证明影响锑白白度的关键因素是晶型结构。并介绍了在生产实践上,锑白炉中控制适当的一次风、二次风、冷却风和反应室温度等工艺条件,可以获得高白度产品。
Antimony white as a pigment is mainly judged by the degree of whiteness. With a view to improving the quality of the product, tests were carried out to investigate the effect of impurities contamination, the shape and size of the grains, and the crystal structure of antimony oxides. At the same time, methods of producing superfine antimony white on a large scale were also investigated. It was found that amongst the many factors the crystal structure of the grains was most important, thus the greater the amount of cubic antimony trioxide present, the better the quality of antimony white as revealed by its whiteness. Furthermore, long-time tests on a large scale showed that the best quality of antimony white powders could be obtained by suitable control of the primary and secondary oxidizing blast, the forced-air cooling flow, and the reaction chamber temperature.
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