JPS57170812A - Increasing method for purity of natural graphite - Google Patents
Increasing method for purity of natural graphiteInfo
- Publication number
- JPS57170812A JPS57170812A JP56057758A JP5775881A JPS57170812A JP S57170812 A JPS57170812 A JP S57170812A JP 56057758 A JP56057758 A JP 56057758A JP 5775881 A JP5775881 A JP 5775881A JP S57170812 A JPS57170812 A JP S57170812A
- Authority
- JP
- Japan
- Prior art keywords
- soln
- hydrofluoric acid
- graphite
- acid
- natural graphite
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
PURPOSE: To manufacture high purity graphite by immersing fine granular natural graphite after flotation in a soln. contg. hydrofluoric acid to remove the impurity made of clay mineral by leaching.
CONSTITUTION: Natural graphite ore is crushed to fine granules having ≤ about 6 mesh size and subjected to flotation. The granular graphite refined in some degree is immersed in an aqueous soln. contg. hydrofluoric acid. The soln. is an aqueous soln. of hydrofluoric acid having about 46% concn. as HF to 35.37% which is the concn. of the azeotropic mixture with water, and an aqueous soln. of a mixture of hydrofluoric acid with various kinds of mineral acids is also preferably used as said soln. The preferred mineral acids are nitric acid, hydrochloric acid and sulfuric acid, and an about 1:1 mixture of one of the mineral acids with water is mixed with about 46% hydrofluoric acid in about 1:1. The clay mineral composed chiefly of silica, alumina and iron oxide is removed by leaching for several min W several hr. The treated graphite is washed and dried to obtain a refined product.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56057758A JPS57170812A (en) | 1981-04-15 | 1981-04-15 | Increasing method for purity of natural graphite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56057758A JPS57170812A (en) | 1981-04-15 | 1981-04-15 | Increasing method for purity of natural graphite |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57170812A true JPS57170812A (en) | 1982-10-21 |
Family
ID=13064770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56057758A Pending JPS57170812A (en) | 1981-04-15 | 1981-04-15 | Increasing method for purity of natural graphite |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57170812A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4780112A (en) * | 1985-02-19 | 1988-10-25 | Oabrand Pty. Limited | Method for the continuous chemical reduction and removal of mineral matter contained in carbon structures |
| US4974424A (en) * | 1986-02-04 | 1990-12-04 | Kawasaki Steel Corp. | Method and system for cooling strip |
| JPH0350110A (en) * | 1989-07-19 | 1991-03-04 | Kansai Coke & Chem Co Ltd | Method for highly purifying graphite |
| CN1062834C (en) * | 1998-08-31 | 2001-03-07 | 四川轻化工学院 | Method for producing flexible graphite material with medium-carbon natural scaly graphite powder |
| JP2011036854A (en) * | 2009-08-10 | 2011-02-24 | General Electric Co <Ge> | Method for desulfurizing fluid and method for operating coal combustion system |
| JP2011509236A (en) * | 2008-01-08 | 2011-03-24 | カーボンエクスト・グループ・リミテッド | System and method for purifying carbonaceous material |
| CN110475747A (en) * | 2017-03-31 | 2019-11-19 | 安赛乐米塔尔公司 | For the method by kish manufacture graphene oxide |
| JP2021024774A (en) * | 2019-08-05 | 2021-02-22 | 燕山大学Ｙａｎｓｈａｎ Ｕｎｉｖｅｒｓｉｔｙ | Novel sp2-sp3 hybrid crystalline carbon and its preparation process |
| CN113149001A (en) * | 2021-03-05 | 2021-07-23 | 大同氢都驰拓新能源有限公司 | Automatic high-yield method for preparing and purifying spherical graphite |
| JP2021134131A (en) * | 2020-02-28 | 2021-09-13 | 株式会社Nsc | Black lead purification facility |
-
1981
- 1981-04-15 JP JP56057758A patent/JPS57170812A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4780112A (en) * | 1985-02-19 | 1988-10-25 | Oabrand Pty. Limited | Method for the continuous chemical reduction and removal of mineral matter contained in carbon structures |
| US4974424A (en) * | 1986-02-04 | 1990-12-04 | Kawasaki Steel Corp. | Method and system for cooling strip |
| JPH0350110A (en) * | 1989-07-19 | 1991-03-04 | Kansai Coke & Chem Co Ltd | Method for highly purifying graphite |
| CN1062834C (en) * | 1998-08-31 | 2001-03-07 | 四川轻化工学院 | Method for producing flexible graphite material with medium-carbon natural scaly graphite powder |
| JP2011509236A (en) * | 2008-01-08 | 2011-03-24 | カーボンエクスト・グループ・リミテッド | System and method for purifying carbonaceous material |
| JP2011036854A (en) * | 2009-08-10 | 2011-02-24 | General Electric Co <Ge> | Method for desulfurizing fluid and method for operating coal combustion system |
| CN110475747A (en) * | 2017-03-31 | 2019-11-19 | 安赛乐米塔尔公司 | For the method by kish manufacture graphene oxide |
| US11702341B2 (en) | 2017-03-31 | 2023-07-18 | Arcelormittal | Method for the manufacture of graphene oxide from Kish graphite |
| JP2021024774A (en) * | 2019-08-05 | 2021-02-22 | 燕山大学Ｙａｎｓｈａｎ Ｕｎｉｖｅｒｓｉｔｙ | Novel sp2-sp3 hybrid crystalline carbon and its preparation process |
| US11634327B2 (en) | 2019-08-05 | 2023-04-25 | Yanshan University | SP2-SP3 hybrid crystalline carbon and its preparation process |
| JP2021134131A (en) * | 2020-02-28 | 2021-09-13 | 株式会社Nsc | Black lead purification facility |
| CN113149001A (en) * | 2021-03-05 | 2021-07-23 | 大同氢都驰拓新能源有限公司 | Automatic high-yield method for preparing and purifying spherical graphite |
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