晶质石墨提纯方法简述
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摘要
石墨提纯主要有浮选法、碱酸法、氢氟酸法、氯化焙烧法、高温焙烧法。浮选法获得的产品品位较低,只适用于初步提纯。碱酸法、氢氟酸法、氯化焙烧法是通过化学方法,在浮选的基础之上进一步提纯,能使石墨矿的品位达到90%以上。高温焙烧法的提纯效果最好,但成本最高,对原料的要求也比较苛刻。本文概述了石墨的分类、性质及用途,对比了几种提纯石墨的方法,并简要概括了其优缺点。
Graphite purification mainly includes flotation method, alkali acid method, hydrofluoric acid method, chlorination roasting method and high temperature roasting method. The product obtained by flotation has a low grade and is only suitable for initial purification. The alkali acid method, the hydrofluoric acid method, and the chlorination roasting method are further purified by a chemical method on the basis of flotation, and the grade of the graphite ore can be made 90% or more. The high-temperature roasting method has the best purification effect, but the cost is the highest, and the requirements for raw materials are also harsh.This paper summarized the classification, properties and uses of graphite, compared several methods for purifying graphite, and briefly summarized its advantages and disadvantages.
Graphite purification mainly includes flotation method, alkali acid method, hydrofluoric acid method, chlorination roasting method and high temperature roasting method. The product obtained by flotation has a low grade and is only suitable for initial purification. The alkali acid method, the hydrofluoric acid method, and the chlorination roasting method are further purified by a chemical method on the basis of flotation, and the grade of the graphite ore can be made 90% or more. The high-temperature roasting method has the best purification effect, but the cost is the highest, and the requirements for raw materials are also harsh.This paper summarized the classification, properties and uses of graphite, compared several methods for purifying graphite, and briefly summarized its advantages and disadvantages.
引文
[1]沈万慈,康飞宇,黄正宏,等.石墨产业的现状与发展[J].中国非金属矿工业导刊,2013,(2):1-3,43.
[2]张凌燕,李向益,邱杨率,等.四川某难选石墨矿选矿试验研究[J].金属矿山,2012,(7):95-98.
[3]谢刚,李晓阳,臧健,等.高纯石墨制备现状及进展[J].云南冶金,2011,40(1):48-51.
[4] Liu S B,Ying Z,Wang Z M,et al.Improving the electrochemical properties of natural graphite spheres by coating with a pyrolytic carbon shell[J]. New Carbon Materials,2008,(1):30-36.
[5]刘曦,雷新荣,吴红丹,等.大田细鳞片石墨的提纯试验研究[J].非金属矿,2009,,32(1):53-76.
[6]周国江,杨明,刘丽来,等.助熔剂辅助碱熔-酸浸法制备高纯石墨[J].黑龙江科技大学学报,2014,,24(4):387-392.
[7]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.
[8]张向军,陈斌,高欣明,等.高温石墨化提纯晶质(鳞片)石墨[J].炭素技术, 2001,(2):39-40.
[9]张然,余丽秀.高纯石墨制备及应用研究进展[J].中国非金属矿工业导刊,2006,(54):59-61.
[2]张凌燕,李向益,邱杨率,等.四川某难选石墨矿选矿试验研究[J].金属矿山,2012,(7):95-98.
[3]谢刚,李晓阳,臧健,等.高纯石墨制备现状及进展[J].云南冶金,2011,40(1):48-51.
[4] Liu S B,Ying Z,Wang Z M,et al.Improving the electrochemical properties of natural graphite spheres by coating with a pyrolytic carbon shell[J]. New Carbon Materials,2008,(1):30-36.
[5]刘曦,雷新荣,吴红丹,等.大田细鳞片石墨的提纯试验研究[J].非金属矿,2009,,32(1):53-76.
[6]周国江,杨明,刘丽来,等.助熔剂辅助碱熔-酸浸法制备高纯石墨[J].黑龙江科技大学学报,2014,,24(4):387-392.
[7]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.
[8]张向军,陈斌,高欣明,等.高温石墨化提纯晶质(鳞片)石墨[J].炭素技术, 2001,(2):39-40.
[9]张然,余丽秀.高纯石墨制备及应用研究进展[J].中国非金属矿工业导刊,2006,(54):59-61.