US1614352A - Process for purifying, enriching, or refining crude graphite - Google Patents
Process for purifying, enriching, or refining crude graphite Download PDFInfo
- Publication number
- US1614352A US1614352A US21701A US2170125A US1614352A US 1614352 A US1614352 A US 1614352A US 21701 A US21701 A US 21701A US 2170125 A US2170125 A US 2170125A US 1614352 A US1614352 A US 1614352A
- Authority
- US
- United States
- Prior art keywords
- graphite
- enriching
- purifying
- refining crude
- refining
- 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.)
- Expired - Lifetime
Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title description 24
- 239000010439 graphite Substances 0.000 title description 23
- 229910002804 graphite Inorganic materials 0.000 title description 23
- 238000000034 method Methods 0.000 title description 7
- 238000007670 refining Methods 0.000 title description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 238000011282 treatment Methods 0.000 description 5
- 238000005188 flotation Methods 0.000 description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
- 239000011707 mineral Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 239000012634 fragment Substances 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241001408699 Artia Species 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229960000443 hydrochloric acid Drugs 0.000 description 1
- 235000011167 hydrochloric acid Nutrition 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 235000011837 pasties Nutrition 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000001665 trituration Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/20—Graphite
- C01B32/21—After-treatment
- C01B32/215—Purification; Recovery or purification of graphite formed in iron making, e.g. kish graphite
Definitions
- Lumps or flakes of graphite are, as is well known, generally made up from a series of smaller flakes or fragments of pure graphite in aggregations united together by a silicious 5 or alummous cement.
- the trituration of the mineral which has been previously crushed for; instance to such a degree as to enable it to pass through a number 6 mesh, is efi'ectedin a tube mill or apparatus, the triturating means comprising metallic coned elements, sufiioient-Waterbea ing injected at the timeof treatment to render. the mixture pasty.
- the object of this operation is to liberate or separate the constituentelements of the original lump or flake.
- the cementing material ot the to graphite particles is finely crushed, whilst the-small fragments of graphite, 'byreason oftheir slimy nature remain almost unaffected.
- amixture consisting of ellicles of graphite, and silica, alumina and oxide of iron in a very finely pulverizedcondition, and'these.
- ducer being employed for constantly spraying with water the material under treatment, which increases to a considerable extent the eilicacy of the sieving or sitting.
- the two classes of material or products classified by the foregoing process are then passed to flotation chambers.
- graphite is obtained containing from to 92% of carbon graphite of very high lubricating power.
- the graphite may be obtained of various degrees of coarseness, passing for example through 60, 120 or 200 mesh sieves.
- the material which is coarser than 120 -mesh is passed again through'the crushing apparatus through the washer and through the flotation chambers, which gives a graphite of a greater purity than 95%.
- the graphite obtained as (I above described is mixed with a determined proportion by weight of carbonate of soda according to the ganguecontent to be sepa-
- the mixture is raised to 700 in a gas heated continuous kiln, and the operation may then be carriedout in either of the two following methods
- (a) The product obtained from the kiln is passed again to the tube mill or apparatus and then may be sieved in the wet state and treated by flotation as explained above.
- hydrochloric-acid is obtainable ata commercial rate the material may be treated with a quantity of dilute acid sufiicient for the soluble products, thus separating them together with silica in an extremely finely divided state. By washing, the soluble products and any excess of acid are removed, and the resulting material is sieved or sifted by means of the pneumatic vibrator to separate out the silica.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Inorganic Chemistry (AREA)
- Carbon And Carbon Compounds (AREA)
Description
I Patented Jan. 11, 1 927.
EDMOND JEAN EUGENE DUMOND, OF PARIS, FRANCE. I
rnoonss non romrvme, ENRICHING, on nnrmme CRUDE swarm.
No Drawing. Application filed April 8, 1925, Serial No. 21,701, and in France April 83, 1924.
Lumps or flakes of graphite are, as is well known, generally made up from a series of smaller flakes or fragments of pure graphite in aggregations united together by a silicious 5 or alummous cement.
It follows that in order to purify or refine the mineral, it is necessary to employ a process for eliminating the largest possible proportion of the sillcious or aluminous cement, whilst leaving the pure graphite in its original physical state, that is to say in the form of line particles in which it existed when united in the coarser lumps submitted to treatment. The present process has for its object the enrichment or refining of graphite by subimttmg the mineral to various treatments in succession, namely in the first place to a process of crushing then to tritur'ation in a damp state in a tube mill or apparatus, then to separation in the damp state. by sitting or passing through a sieve, and finally to flotation for the purpose of separating out the fine'particles of refined graphite, those a; which are coarsest being again passed to the refining apparatus and again washed and sieved and floated in order to increase their richness or purity.
The trituration of the mineral, which has been previously crushed for; instance to such a degree as to enable it to pass through a number 6 mesh, is efi'ectedin a tube mill or apparatus, the triturating means comprising metallic coned elements, sufiioient-Waterbea ing injected at the timeof treatment to render. the mixture pasty. The object of this operation is to liberate or separate the constituentelements of the original lump or flake. The cementing material ot the to graphite particles is finely crushed, whilst the-small fragments of graphite, 'byreason oftheir slimy nature remain almost unaffected. i l J Consequently, at the end of the treatment to in the crushing apparatusjthere is obtained amixture consisting of ellicles of graphite, and silica, alumina and oxide of iron in a very finely pulverizedcondition, and'these.
it is necessary to separate. I0 Thesieving'or sitting of thematenal 1s efi'ected by means of a pneumatic vibrating sieve provided with a metallic net, of greater or less fineness, an atom zer or spray pro-' rated.
ducer being employed for constantly spraying with water the material under treatment, which increases to a considerable extent the eilicacy of the sieving or sitting.
The two classes of material or products classified by the foregoing process are then passed to flotation chambers.
In this Way graphite is obtained containing from to 92% of carbon graphite of very high lubricating power. The graphite may be obtained of various degrees of coarseness, passing for example through 60, 120 or 200 mesh sieves.
The material which is coarser than 120 -mesh is passed again through'the crushing apparatus through the washer and through the flotation chambers, which gives a graphite of a greater purity than 95%.
If desired an even greater-percentage of purity may be obtained by chemical treatnient.
For this purpose the graphite obtained as (I above described is mixed with a determined proportion by weight of carbonate of soda according to the ganguecontent to be sepa- The mixture is raised to 700 in a gas heated continuous kiln, and the operation may then be carriedout in either of the two following methods (a) The product obtained from the kiln is passed again to the tube mill or apparatus and then may be sieved in the wet state and treated by flotation as explained above. (b) If hydrochloric-acid is obtainable ata commercial rate the material may be treated with a quantity of dilute acid sufiicient for the soluble products, thus separating them together with silica in an extremely finely divided state. By washing, the soluble products and any excess of acid are removed, and the resulting material is sieved or sifted by means of the pneumatic vibrator to separate out the silica.
By these two processes graphite of a p i'ity up to 99 or 99.5% is obtained.
I claim:
1. The art of refining graphite, comprising crushing the crude graphite, grinding the product wet, sitting the ground material 7 while subjected to as ray of'water, 'separating the graphite an chemically treating the sifted graphite for removal of residual 10' gangue.
2. In the art of refining: graphite, mixing artially refined graphite with sodium caronate, heating the mixture to fusion and grinding the product Wet.
3. In the art of refining graphite, mixing artia'lly refined graphite with sodium caronate, fusing the same, grinding the prod-
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR580570T | 1924-04-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1614352A true US1614352A (en) | 1927-01-11 |
Family
ID=8956881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US21701A Expired - Lifetime US1614352A (en) | 1924-04-23 | 1925-04-08 | Process for purifying, enriching, or refining crude graphite |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US1614352A (en) |
| FR (1) | FR580570A (en) |
| GB (1) | GB232936A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2556496A (en) * | 1947-12-09 | 1951-06-12 | Great Lakes Carbon Corp | Purification of coal |
| US3170764A (en) * | 1959-05-06 | 1965-02-23 | Agrashell Inc | Process for producing non-magnetic finely ground materials such as charcoal and calcium carbonate |
| WO2018178842A1 (en) * | 2017-03-31 | 2018-10-04 | Arcelormittal | A method for the manufacture of graphene oxide from kish graphite |
| WO2018178845A1 (en) * | 2017-03-31 | 2018-10-04 | Arcelormittal | A method for the manufacture of reduced graphene oxide from kish graphite |
| US20210376305A1 (en) * | 2020-06-01 | 2021-12-02 | Guangdong Brunp Recycling Technology Co., Ltd. | Method for purification and lattice reconstruction of graphite in power battery |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1112357A (en) * | 1993-08-03 | 1995-11-22 | 印德莱斯科股份有限公司 | Beneficiation of flake graphite |
| CN110745820B (en) * | 2019-12-04 | 2022-04-29 | 辽宁工程技术大学 | Purification method of smokeless coal-based microcrystalline graphite for preparing lithium ion battery negative electrode material |
-
1924
- 1924-04-23 FR FR580570D patent/FR580570A/en not_active Expired
-
1925
- 1925-03-26 GB GB8123/25A patent/GB232936A/en not_active Expired
- 1925-04-08 US US21701A patent/US1614352A/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2556496A (en) * | 1947-12-09 | 1951-06-12 | Great Lakes Carbon Corp | Purification of coal |
| US3170764A (en) * | 1959-05-06 | 1965-02-23 | Agrashell Inc | Process for producing non-magnetic finely ground materials such as charcoal and calcium carbonate |
| WO2018178842A1 (en) * | 2017-03-31 | 2018-10-04 | Arcelormittal | A method for the manufacture of graphene oxide from kish graphite |
| WO2018178845A1 (en) * | 2017-03-31 | 2018-10-04 | Arcelormittal | A method for the manufacture of reduced graphene oxide from kish graphite |
| RU2736371C1 (en) * | 2017-03-31 | 2020-11-16 | Арселормиттал | Method of producing graphene oxide from kish graphite |
| AU2018242528B2 (en) * | 2017-03-31 | 2021-01-21 | Arcelormittal | A method for the manufacture of reduced graphene oxide from Kish graphite |
| US11390529B2 (en) | 2017-03-31 | 2022-07-19 | Arcelormittal | Method for the manufacture of reduced graphene oxide from Kish graphite |
| US11702341B2 (en) | 2017-03-31 | 2023-07-18 | Arcelormittal | Method for the manufacture of graphene oxide from Kish graphite |
| US20210376305A1 (en) * | 2020-06-01 | 2021-12-02 | Guangdong Brunp Recycling Technology Co., Ltd. | Method for purification and lattice reconstruction of graphite in power battery |
Also Published As
| Publication number | Publication date |
|---|---|
| FR580570A (en) | 1924-11-10 |
| GB232936A (en) | 1925-08-20 |
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