| 硫酸-氢氟酸分步提纯法制备高纯石墨研究 |
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| 引用本文： | 张然,余丽秀.硫酸-氢氟酸分步提纯法制备高纯石墨研究[J].非金属矿,2007,30(3):42-44. |
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| 作者姓名： | 张然 余丽秀 |
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| 作者单位： | 国家非金属矿资源综合利用工程技术研究中心,郑州,450006;中国地质科学院郑州矿产综合利用研究所,郑州,450006 |
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| 摘 要： | 用硫酸、氢氟酸分步提纯法制备高纯石墨,分别研究了硫酸、氢氟酸反应温度、酸浓度、反应时间对脱灰率的影响,在总浸出时间为4 h的条件下,制得了99.94%的高纯石墨,本工艺同常用的混酸法相比,具有反应时间短、浸出成本低等特点.
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| 关 键 词： | 高纯石墨 分步提纯 硫酸 氢氟酸 |
| 修稿时间： | 2006-11-17 |
Study on Preparation of High-Purity Graphite by Stepwise Purification with Sulfuric Acid/Hydrofluoric Acid |
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| Zhang Ran,Yu Lixiu.Study on Preparation of High-Purity Graphite by Stepwise Purification with Sulfuric Acid/Hydrofluoric Acid[J].Non-metallic Mines,2007,30(3):42-44. |
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| Authors: | Zhang Ran Yu Lixiu |
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| Affiliation: | 1. National Engineering Center for Multipurpose Utilization of Non-Metallic Mineral Resources, Zhengzhou 450006; 2. Zhengzhou Institute of Multipurpose Utilization of Mineral Resources, CAGS, Zhengzhou 450006 |
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| Abstract: | The high-purity graphite was prepared by stepwise purification using sulfuric acid and hydrofluoric acid. The effects of temperature of H2SO4, concentration of acid and time on demineralization were discussed. The carbon content of graphite was increased to 99.94% about 4 hours of leaching time in total. Compared with the traditional method using mixed acid, this technique has the characters of rapid reaction and low cost. |
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| Keywords: | high-purity graphite stepwise purification sulfuric acid hydrofluoric acid |
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