一高氯酸镁的再生高氯酸镁的作用是:a)把进入高频感应炉中的氧气进行除湿干燥。b)把进入红外吸收池的待测气体再进行除湿干燥。当发现干燥管中的高氯酸镁吸水结块达整个干燥管体积的1/2时,就要更换新药品。把用过的高氯酸镁放入蒸放器中,置入140℃烘箱烘烤24小时后取出,放入干燥器中稍冷即可应用。如温度高于180℃,有部分试剂(底部)结块呈致密状不能再用。二坩埚的再利用每分析一次碳硫就要用一只坩埚,耗费量很大。实践中我们发现:把使用过的坩埚冷却后,挑选那些完全没有破裂者,可再利用一次。用过的坩埚内因存有试样与助熔剂的合金,导磁率较好,又因它在高温环境中灼烧过,所以杂质空白值比较稳定,用来做常置的碳硫分析时数据相当稳定。但分析时间有时要长,适当地调节比较器电平的高低,分析时间也能在30秒钟内完成。一般,美国LECO公司生产的坩埚破裂率约为50%,我国茶山坩埚瓷厂(湖南醴陵县)生产的坩 A magnesium perchlorate regeneration The role of magnesium perchlorate is: a) into the high-frequency induction furnace dehumidification drying. b) The gas into the infrared absorption pool to be tested again dehumidification and drying. When found in the dry pipe of magnesium perchlorate water caking up to the entire drying tube volume of 1/2, it is necessary to replace the new drugs. The used magnesium perchlorate into the steaming device, placed in an oven baked at 140 ℃ for 24 hours and then removed, into the dryer to apply a little cold. If the temperature is higher than 180 ℃, some of the reagents (bottom) agglomerate was dense and can not be reused. Recycling two crucibles Each time you analyze a carbon and sulfur crucible, a large amount of consumption is required. In practice, we found that: after the crucibles were cooled down, those who had no rupture at all were selected and reused once. Used crucible due to the existence of the sample and flux alloy, magnetic permeability is good, but also because it burns in high temperature environment, so the impurity blank value is relatively stable, used to do the home of the carbon-sulfur analysis of the data is quite stable . However, the analysis time is sometimes longer, the level of the comparator is properly adjusted, and the analysis time can be completed in 30 seconds. In general, the cracked rate of the crucible produced by LECO Company in the United States is about 50%. Crucibles produced in China’s Dashan Crucible Porcelain Factory (Liling County, Hunan Province)