The cause of red platy alkali was analysed based on the alkali quality in cell, feeding of sodium nitrate and sulfur, settled time, temperature control, etc.

• 针对大锅法片碱颜色发红现象，从电槽流出碱质量、硝酸钠和硫磺的投入量、熔融碱澄清时间及温度控制等方面剖析其原因。