• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>European Journal of Glass Science and Technology, PartA. Glass Technology >A study of refining. Part 1: Measurements of the refining of a soda-lime-silica glass with and without refining agents
【24h】

A study of refining. Part 1: Measurements of the refining of a soda-lime-silica glass with and without refining agents

机译：精炼研究。第1部分：使用和不使用澄清剂的钠钙硅玻璃的澄清度测量

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The data presented here refer to 60 g melts of glass of composition in wt%, 73.5 SiO2, 10.0 CaO, 16.5 Na2O, founded in platinum in an electric furnace at 1400 and 1450 degrees C. There was no significant convection of the melt. Melts were made at 1400 degrees C, containing all possible combinations of 0, 0.10 and 0.50% As2O3 with 0, 1.00 and 5.00% Na2O supplied as sodium peroxide. Four of these combinations were investigated in detail at 1400 degrees C and two at 1450 degrees C. By counting the seed remaining in 30 g slabs cast from melts founded for different times it was possible to construct graphs showing the decrease of total number (N) of seed per cm(3) with time. This relation was approximately, but not exactly, exponential. The refining agents affected the number of seed present at the beginning of refining as well as the rate of refining; because of this it was concluded thatmelting and refining could not be considered as two independent processes. Measurements of seed size distributions allowed the decrease of the number of seed per cm(3) (n), of given diameter (x), with time to be plotted. Most of the data were well fitted by an exponential relation between n and t. The refining agents altered the shapes of the seed size distributions and the rates at which seed disappeared. Small seed disappeared more slowly in melts containing 0.50% As2O3 and 5.0% Na2O as Na2O2 than in melts containing 0.50% As2O3 and 1.0% Na2O as Na2O2. This suggested that it was possible to supply too much oxygen for any given addition of As2O3. Raising the temperature had effects similar to some combinations of refining agents, affecting seed size distributions and rates of disappearance of seed.
机译：此处提供的数据涉及60 g重量百分比为73.5 SiO2、10.0 CaO，16.5 Na2O的玻璃熔体，在1400和1450摄氏度的电炉中于铂中建立。该熔体没有明显的对流。熔体是在1400摄氏度下制成的，其中包含0、0.10和0.50％的As2O3的所有可能组合以及以过氧化钠形式提供的0、1.00和5.00％的Na2O。这些组合中的四种在1400摄氏度下进行了详细研究，另外两种在1450摄氏度下进行了研究。通过计算在不同时间建立的熔体浇铸的30克铸坯中残留的种子，可以构建显示总数减少（N）的图表每厘米（3）的种子数量随时间变化。这种关系是近似的，但不完全是指数的。精制剂影响精制开始时存在的种子数量以及精制速度。因此，得出的结论是，不能将熔融和精炼视为两个独立的过程。种子大小分布的测量值允许绘制给定直径（x）的每cm（3）（n）种子数。 n和t之间的指数关系很好地拟合了大多数数据。精制剂改变了种子大小分布的形状和种子消失的速率。与包含0.50％As2O3和1.0％Na2O作为Na2O2的熔体相比，含有0.50％As2O3和5.0％Na2O作为Na2O2的熔体中的小种子消失得更慢。这表明，对于任何给定的As2O3添加量，都可能提供过多的氧气。升高温度的作用类似于精制剂的某些组合，影响种子的大小分布和种子的消失速率。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号