SU156537A1 - - Google Patents
Info
- Publication number
- SU156537A1 SU156537A1 SU757653A SU757653A SU156537A1 SU 156537 A1 SU156537 A1 SU 156537A1 SU 757653 A SU757653 A SU 757653A SU 757653 A SU757653 A SU 757653A SU 156537 A1 SU156537 A1 SU 156537A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- sodium
- solution
- chromium oxide
- sodium thiosulfate
- chromate
- Prior art date
Links
- 239000000243 solution Substances 0.000 description 11
- AKHNMLFCWUSKQB-UHFFFAOYSA-L Sodium thiosulphate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 description 9
- 235000019345 sodium thiosulphate Nutrition 0.000 description 9
- 229910000423 chromium oxide Inorganic materials 0.000 description 8
- WGLPBDUCMAPZCE-UHFFFAOYSA-N trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 8
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 239000000725 suspension Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000011593 sulfur Substances 0.000 description 3
- 229910052717 sulfur Inorganic materials 0.000 description 3
- KIEOKOFEPABQKJ-UHFFFAOYSA-N Sodium dichromate Chemical compound [Na+].[Na+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O KIEOKOFEPABQKJ-UHFFFAOYSA-N 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- DHCDFWKWKRSZHF-UHFFFAOYSA-L thiosulfate(2-) Chemical compound [O-]S([S-])(=O)=O DHCDFWKWKRSZHF-UHFFFAOYSA-L 0.000 description 2
- PXLIDIMHPNPGMH-UHFFFAOYSA-N Sodium chromate Chemical compound [Na+].[Na+].[O-][Cr]([O-])(=O)=O PXLIDIMHPNPGMH-UHFFFAOYSA-N 0.000 description 1
- 239000003929 acidic solution Substances 0.000 description 1
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- SOCTUWSJJQCPFX-UHFFFAOYSA-N dichromate(2-) Chemical compound [O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O SOCTUWSJJQCPFX-UHFFFAOYSA-N 0.000 description 1
- DHCDFWKWKRSZHF-UHFFFAOYSA-M hydroxidodioxidosulfidosulfate(1-) Chemical compound OS([S-])(=O)=O DHCDFWKWKRSZHF-UHFFFAOYSA-M 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L na2so4 Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- 230000001590 oxidative Effects 0.000 description 1
- -1 oxy chromium Chemical compound 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- KEAYESYHFKHZAL-UHFFFAOYSA-N sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
Description
Известен способ утилизации тиосульфата натри в производстве окиси хрома хроматно-серным методом путем окислени раствора тиосульфата натри или суспензии гидратированной окиси хрома в растворе тиосульфата натри .A known method for utilizing sodium thiosulfate in the production of chromium oxide by the chromate-sulfur method is by oxidizing sodium thiosulfate solution or a suspension of hydrated chromium oxide in sodium thiosulfate solution.
Предлагаемый способ утилизации тиосульфата натри отличаетс от известного тем, что раствор тиосульфата натри или суснензию гидратированной окиси хрома в растворе тиосульфата окисл ют моноили бихроматом натри при Э8-10(ГС с добавлением серной кислоты до рН 5-6.The proposed method of utilizing sodium thiosulfate differs from the known one in that sodium thiosulfate solution or suspension of hydrated chromium oxide in thiosulfate solution oxidizes mono or sodium bichromate at E8-10 (HS with sulfuric acid to pH 5-6.
В предлагаемом способе утилизацию тиосульфата натри предусматривают в качестве самосто тельной стадии, при шестивалеитный хром моно- или бихромата в процессе окислени тиосулыЬата натри в сульфат восстанавливаетс до трх хвалентного и дает дополнительное количество окиси хрома. Дл уменьитени расхода тиосульфата маточные растворы носле отделени сульфата натри возвращают в процесс.In the proposed method, the utilization of sodium thiosulfate is envisaged as an independent stage, with hexa leite chromium mono- or bichromate in the process of oxidation of sodium thiosulmate to sulfate is reduced to three compliant and gives an additional amount of chromium oxide. To reduce thiosulfate consumption, mother liquors are removed from the sodium sulfate separation process.
Предложенный способ утилизации гипосульфитных растворов позвол ет не только получить дополннтельное количество гидратированной окиси хрома, но и значительно упростить хроматно-серный способ получени окиси хрома, так как исключает р д трудоемких процессов (регенерацию серы из гипосульфитных маточников серной кислотой, сгущение выпавщей серы и приготовление из нее суспензии на растворе хромата натри ).The proposed method of utilization of hyposulfite solutions allows not only to obtain an additional amount of hydrated chromium oxide, but also greatly simplifies the chromate-sulfur method of producing chromium oxide, since it eliminates a number of labor-intensive processes suspension in sodium chromate solution).
Предмет изобретени Subject invention
Способ утилизации раствора тиосульфата натри в нроизводстве окнси хрома хроматно-серным методом путем окислени раствора тиосульфата натри или суспензии гидратированной окиси хрома в растворе тиосульфата натри раствором хромата или бихромата натри , отличающийс тем, что, с целью упрощени процесса и получепи хорощо фильтрующейс гидратироианной окиси хрома, окисленне прор .од т при 98-100°С в кислом растноре при рН 5-6, поддерживаемом добавлением серной кислоты.Method of utilization of sodium thiosulfate solution in the production of oxy chromium by chromate-sulfur method by oxidation of sodium thiosulfate solution or suspension of hydrated chromium oxide in sodium thiosulfate solution with chromate solution or sodium dichromate, in order to simplify the process and obtain chromium oxide filter oxidized solution at 98-100 ° C in an acidic solution at pH 5-6, supported by the addition of sulfuric acid.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU156537A1 true SU156537A1 (en) |
Family
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4896491A (en) * | 1972-01-21 | 1973-12-10 | ||
| JPS5015240B1 (en) * | 1970-11-07 | 1975-06-03 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5015240B1 (en) * | 1970-11-07 | 1975-06-03 | ||
| JPS4896491A (en) * | 1972-01-21 | 1973-12-10 |
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