rowlock

The result showed thatbympanites ,salt leak and cracking can be protected efficiently by crucible with vertical building,starting time decreaset to 1.

结果表明：采用立式砌筑方法砌筑坩埚可有效地防止鼓包、漏盐和开裂；而采用“回”字形中性导流板和螺旋状辅助电极，使启动时间由原来的8～10小时缩短为1。