GB397434A - Improvements in the preparation of chromates and dichromates - Google Patents
Improvements in the preparation of chromates and dichromatesInfo
- Publication number
- GB397434A GB397434A GB12338/33A GB1233833A GB397434A GB 397434 A GB397434 A GB 397434A GB 12338/33 A GB12338/33 A GB 12338/33A GB 1233833 A GB1233833 A GB 1233833A GB 397434 A GB397434 A GB 397434A
- Authority
- GB
- United Kingdom
- Prior art keywords
- alkali
- alkaline
- reaction
- earth
- ferrochrome
- 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
Links
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical class [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 title abstract 2
- 239000003513 alkali Substances 0.000 abstract 7
- 239000000126 substance Substances 0.000 abstract 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 abstract 4
- KMUONIBRACKNSN-UHFFFAOYSA-N potassium dichromate Chemical compound [K+].[K+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O KMUONIBRACKNSN-UHFFFAOYSA-N 0.000 abstract 4
- 229910000604 Ferrochrome Inorganic materials 0.000 abstract 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 3
- 229910052760 oxygen Inorganic materials 0.000 abstract 3
- 239000001301 oxygen Substances 0.000 abstract 3
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 abstract 2
- 229910000019 calcium carbonate Inorganic materials 0.000 abstract 2
- 238000004519 manufacturing process Methods 0.000 abstract 2
- 239000000203 mixture Substances 0.000 abstract 2
- 239000007800 oxidant agent Substances 0.000 abstract 2
- 239000001488 sodium phosphate Substances 0.000 abstract 2
- JHWIEAWILPSRMU-UHFFFAOYSA-N 2-methyl-3-pyrimidin-4-ylpropanoic acid Chemical compound OC(=O)C(C)CC1=CC=NC=N1 JHWIEAWILPSRMU-UHFFFAOYSA-N 0.000 abstract 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical class OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 abstract 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 abstract 1
- XTEGARKTQYYJKE-UHFFFAOYSA-M Chlorate Chemical class [O-]Cl(=O)=O XTEGARKTQYYJKE-UHFFFAOYSA-M 0.000 abstract 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 abstract 1
- 229910019142 PO4 Inorganic materials 0.000 abstract 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract 1
- CXLPFLORKVBGHS-UHFFFAOYSA-N [Na+].[Na+].OS(O)(=O)=O.[O-][Cr]([O-])(=O)=O Chemical compound [Na+].[Na+].OS(O)(=O)=O.[O-][Cr]([O-])(=O)=O CXLPFLORKVBGHS-UHFFFAOYSA-N 0.000 abstract 1
- 150000001242 acetic acid derivatives Chemical class 0.000 abstract 1
- 239000003570 air Substances 0.000 abstract 1
- 229910000287 alkaline earth metal oxide Inorganic materials 0.000 abstract 1
- 229910045601 alloy Inorganic materials 0.000 abstract 1
- 239000000956 alloy Substances 0.000 abstract 1
- 150000004645 aluminates Chemical class 0.000 abstract 1
- 239000012736 aqueous medium Substances 0.000 abstract 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 abstract 1
- 150000001805 chlorine compounds Chemical class 0.000 abstract 1
- 229910052804 chromium Inorganic materials 0.000 abstract 1
- 239000011651 chromium Substances 0.000 abstract 1
- BNIILDVGGAEEIG-UHFFFAOYSA-L disodium hydrogen phosphate Chemical compound [Na+].[Na+].OP([O-])([O-])=O BNIILDVGGAEEIG-UHFFFAOYSA-L 0.000 abstract 1
- 229910000397 disodium phosphate Inorganic materials 0.000 abstract 1
- 235000019800 disodium phosphate Nutrition 0.000 abstract 1
- 150000004679 hydroxides Chemical class 0.000 abstract 1
- 150000002823 nitrates Chemical class 0.000 abstract 1
- 230000001590 oxidative effect Effects 0.000 abstract 1
- 235000021317 phosphate Nutrition 0.000 abstract 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 abstract 1
- VKJKEPKFPUWCAS-UHFFFAOYSA-M potassium chlorate Chemical compound [K+].[O-]Cl(=O)=O VKJKEPKFPUWCAS-UHFFFAOYSA-M 0.000 abstract 1
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 abstract 1
- 229910052939 potassium sulfate Inorganic materials 0.000 abstract 1
- 239000001120 potassium sulphate Substances 0.000 abstract 1
- 235000011151 potassium sulphates Nutrition 0.000 abstract 1
- 150000004760 silicates Chemical class 0.000 abstract 1
- PXLIDIMHPNPGMH-UHFFFAOYSA-N sodium chromate Chemical compound [Na+].[Na+].[O-][Cr]([O-])(=O)=O PXLIDIMHPNPGMH-UHFFFAOYSA-N 0.000 abstract 1
- 229910052938 sodium sulfate Inorganic materials 0.000 abstract 1
- 235000011152 sodium sulphate Nutrition 0.000 abstract 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 abstract 1
- 239000001117 sulphuric acid Substances 0.000 abstract 1
- 235000011149 sulphuric acid Nutrition 0.000 abstract 1
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 abstract 1
- 229910000406 trisodium phosphate Inorganic materials 0.000 abstract 1
- 235000019801 trisodium phosphate Nutrition 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- 229910001868 water Inorganic materials 0.000 abstract 1
Landscapes
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
In the manufacture of chromates or dichromates by oxidizing chromium or its alloys in an aqueous medium at temperatures above 100 DEG C. under pressure, any other substances capable of yielding alkali or alkaline-earth during the reaction are used in place of or together with the alkali or alkaline-earth hydroxides, carbonates, or bicarbonates employed according to the parent Specification. In the manufacture of dichromates the alkali &c. yielding substance may also replace the monochromate used in the parent Specification. The alkali &c. yielding substance may act also as oxidizing agent for the reaction, and mixtures of substances which yield alkali only and which both yield alkali and act as oxidizing agents may be employed. Specified substances which may be used are alkali or alkaline-earth sulphates, chlorides, phosphates, acetates, silicates, aluminates, nitrates, chlorates, persalts, manganates, and permanganates. In one example a mixture of ferrochrome, anhydrous sodium sulphate, calcium carbonate, and water is heated at 280-290 DEG C. in a current of air or oxygen under pressure to obtain sodium dichromate; by using more sodium sulphate sodium monochromate is formed. In another example, potassium dichromate is obtained from ferrochrome by the action of potassium chlorate in the presence of calcium carbonate at 290-300 DEG C. oxygen under pressure being passed through only towards the end of the reaction. In a further example using trisodium phosphate and a reaction temperature of 280-300 DEG C. in a current of air or oxygen, sodium monochromate and disodium phosphate are formed. In a last example, potassium dichromate is obtained from ferrochrome and potassium sulphate, an alkaline-earth oxide or carbonate being preferably present to neutralize the free sulphuric acid formed.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR397434X | 1932-05-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB397434A true GB397434A (en) | 1933-08-24 |
Family
ID=8896536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB12338/33A Expired GB397434A (en) | 1932-05-26 | 1933-04-27 | Improvements in the preparation of chromates and dichromates |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB397434A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2419094A (en) * | 1943-04-28 | 1947-04-15 | Du Pont | Chromite ore pigment |
| WO2012058801A1 (en) * | 2010-11-02 | 2012-05-10 | 天津派森科技有限责任公司 | A hydrothermal oxidation method for production of alkali metal dichromate from carbon ferrochrome |
| CN103193271A (en) * | 2013-04-02 | 2013-07-10 | 四川省银河化学股份有限公司 | Method for producing high-quality sodium bichromate |
-
1933
- 1933-04-27 GB GB12338/33A patent/GB397434A/en not_active Expired
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2419094A (en) * | 1943-04-28 | 1947-04-15 | Du Pont | Chromite ore pigment |
| WO2012058801A1 (en) * | 2010-11-02 | 2012-05-10 | 天津派森科技有限责任公司 | A hydrothermal oxidation method for production of alkali metal dichromate from carbon ferrochrome |
| GB2501994A (en) * | 2010-11-02 | 2013-11-13 | Tianjin Passion Science And Technology Co Ltd | A hydrothermal oxidation method for production of alkali metal dichromate from carbon ferrochrome |
| US9157133B2 (en) | 2010-11-02 | 2015-10-13 | Tianjin Passion Science And Technology Co., Ltd. | Hydrothermal oxidation method for production of alkali metal dichromate from carbon ferrochrome |
| GB2501994B (en) * | 2010-11-02 | 2018-09-12 | Tianjin Passion Science And Tech Co Ltd | A hydrothermal oxidation method for production of alkali metal dichromate from carbon ferrochrome |
| CN103193271A (en) * | 2013-04-02 | 2013-07-10 | 四川省银河化学股份有限公司 | Method for producing high-quality sodium bichromate |
| CN103193271B (en) * | 2013-04-02 | 2014-12-10 | 四川省银河化学股份有限公司 | Method for producing high-quality sodium bichromate |
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