我們南京机床厂一直采用10％氰化鈉和90％氯化鋇配成的混合鹽进行高溫液体氰化。采用这种氰化鹽有許多好处,例如氰化速度高、零件变形小等等;但是也有缺点,那就是必須不断地以新鹽代替旧鹽,否则碳酸鋇的含量百分比大了,就会使鹽液变稠,使渣滓增加,因而会影响氰化的速度。这些旧鹽一般不能再用,而且有毒,得加上大量的硫酸亞铁来消毒。其实这旧鹽經过处理是可以再用的,我們厂里做 We Nanjing Machine Tool Plant has been using 10% sodium cyanide and 90% mixed barium chloride formulated for high temperature liquid cyanide. There are many benefits of using this cyanide salt, such as high cyanide rates, small parts deformation, etc .; however, there are also disadvantages that the old salt must be replaced by new salt, or the barium carbonate content will be too large Salt thickens, increasing dross, which can affect the rate of cyanidation. These old salt can not be used normally, but also toxic, plus a large amount of ferrous sulfate to disinfect. In fact, this old salt can be reused after treatment, we do the factory