旋转炉外炉 体密封、抽真空和通入保护性气氛。
The furnace body of the outside furnace of a rotary furnace is sealed, the air is vacuumized and protection atmosphere is input.
本发明反应温度较低，反应时间较短，无保护性气氛，活性炭比表面积较高。
The method has such advantages as low reaction temperature, short reaction time, no protective atmosphere and large specific surface area of the obtained activated carbon.
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