It is proved that preduction of high-carbon graphite by chloridizing roast is better than by alcali.

指出化焙烧法生高碳石墨较碱法。

The ammonium chloride is obtained by processing the by-product solution of ammonium chloride in the workshop of coordinative producing alcali.

化铵溶液在联碱车间加工成化铵、工艺合理经济划算。