A continuous high-temperature purification reactor for graphite using Freon-12

HU Xiang-long; TANG Xian; ZHOU Yue-bing; DAI Yu; HUANG Qi-zhong

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Article Navigation > New Carbon Mater. > 2016 > 31(5): 532-538

HU Xiang-long, TANG Xian, ZHOU Yue-bing, DAI Yu, HUANG Qi-zhong. A continuous high-temperature purification reactor for graphite using Freon-12. New Carbon Mater., 2016, 31(5): 532-538.

Citation:

HU Xiang-long, TANG Xian, ZHOU Yue-bing, DAI Yu, HUANG Qi-zhong. A continuous high-temperature purification reactor for graphite using Freon-12. New Carbon Mater., 2016, 31(5): 532-538.

HU Xiang-long, TANG Xian, ZHOU Yue-bing, DAI Yu, HUANG Qi-zhong. A continuous high-temperature purification reactor for graphite using Freon-12. New Carbon Mater., 2016, 31(5): 532-538.

Citation:

HU Xiang-long, TANG Xian, ZHOU Yue-bing, DAI Yu, HUANG Qi-zhong. A continuous high-temperature purification reactor for graphite using Freon-12. New Carbon Mater., 2016, 31(5): 532-538.

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A continuous high-temperature purification reactor for graphite using Freon-12

1.
State Key Laboratory for Powder Metallurgy, Central South University, Changsha 410083, China;
2.
Hunan ACME, Changsha 410118, China

Funds: National 973 Program of China (2011CB605801).

Received Date: 2016-07-26
Accepted Date: 2016-10-28
Rev Recd Date: 2016-10-08
Publish Date: 2016-10-28

Abstract

Abstract

A new continuous high-temperature reactor for graphite purification using Freon-12 up to 2 600℃ was designed with a collection and disposal device for the exhaust such as off-gases, tar and dust. The reactor had an automatic graphite delivery system and amulti-zone temperature control system for feed-in, heating, reaction, cooling and feed-out regions that were controlled within ±5℃. The configuration of heat-insulating materials use da labyrinthine connection for irregularly-positioned multi-layer insulating pieces to isolate air and to prevent heat dissipation. Using this reactor the purity of the graphite can be increased from 88.2 to 99.5% with a production capacity of 90 kg/h.
- Purity of graphite,
- Heat treatment furnace,
- Feed-in and feed-out,
- Temperature control,
- Sealing,
- Exhaust disposal

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References(30)

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