SU168269A1 - Purification method of ash graphite - Google Patents
Purification method of ash graphiteInfo
- Publication number
- SU168269A1 SU168269A1 SU818034A SU818034A SU168269A1 SU 168269 A1 SU168269 A1 SU 168269A1 SU 818034 A SU818034 A SU 818034A SU 818034 A SU818034 A SU 818034A SU 168269 A1 SU168269 A1 SU 168269A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- graphite
- purification method
- ash
- ash graphite
- solution
- Prior art date
Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title description 15
- 229910002804 graphite Inorganic materials 0.000 title description 13
- 239000010439 graphite Substances 0.000 title description 13
- 238000000034 method Methods 0.000 title description 4
- 238000000746 purification Methods 0.000 title 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 8
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 8
- 229910000029 sodium carbonate Inorganic materials 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 239000003513 alkali Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
Description
Известный способ очистки зольного графита сол ной кислотой не обеспечивает высокой чистоты графита: содержание углерода в нем носле очистки 97-98о/о. Предложено зольный графит обрабатывать углекислым натрием при температуре 900- 950°С с последующей промывкой водой и БО/О-НЫМ раствором серной кислоты. Это значительно повышает содержание углерода в очищенном графите (99,6-99,9о/о). По предложенному способу графит, подлежащий очистке, обрабатывают водным раствором углекислого натри и носле покрыти кристаллов графита щелочи сущат при начальной температуре 100° и конечной 340- 400°С в печи без доступа воздуха. В той же печи графит, пропитанный раствором углекислого натри , подвергают термической обработке при 900-950°С в течение 20-30 мин. После этого графит охлаждают до температуры около 100°С и смещивают с гор чим конденсатом, затем образующуюс пульпу фильтруют, графит промывают водой и б /оным раствором серной кислоты. После обработки серной кислотой графит промывают холодным конденсатом н сущат. Предмет изобретени Способ очистки зольного графита химическими реагентами, отличающийс тем, что, с целью повыщени степени чистоты графита, его обрабатывают углекислым натрием при температуре 900-950°С с последующей промывкой водой и БО/О-НЫМ раствором серной кислоты.The known method of purifying ash graphite with hydrochloric acid does not provide high purity of graphite: its carbon content is 97–98 ° C. It was proposed to treat the ash graphite with sodium carbonate at a temperature of 900-950 ° C, followed by washing with water and a BO / O-NHY solution of sulfuric acid. This significantly increases the carbon content of the purified graphite (99.6-99.9o / o). According to the proposed method, the graphite to be purified is treated with an aqueous solution of sodium carbonate and then coated with alkali graphite crystals at an initial temperature of 100 ° and a final 340-400 ° C in a furnace without access of air. In the same furnace, graphite, impregnated with sodium carbonate solution, is subjected to heat treatment at 900-950 ° C for 20-30 minutes. After this, the graphite is cooled to a temperature of about 100 ° C and shifted with the hot condensate, then the resulting pulp is filtered, the graphite is washed with water and used sulfuric acid solution. After treatment with sulfuric acid, the graphite is washed with cold condensate and n. The subject of the invention is a method of purifying ash graphite with chemical reagents, characterized in that, in order to increase the purity of graphite, it is treated with sodium carbonate at a temperature of 900-950 ° C, followed by washing with water and a BO / O-NHY solution of sulfuric acid.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU168269A1 true SU168269A1 (en) | 1965-02-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2602124C1 (en) * | 2015-08-19 | 2016-11-10 | Федеральное государственное бюджетное учреждение науки Институт химии Дальневосточного отделения Российской академии наук (ИХ ДВО РАН) | Method for purifying ash graphite |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2602124C1 (en) * | 2015-08-19 | 2016-11-10 | Федеральное государственное бюджетное учреждение науки Институт химии Дальневосточного отделения Российской академии наук (ИХ ДВО РАН) | Method for purifying ash graphite |
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