US4224A - Improvement in manufacture of chromate of potash - Google Patents
Improvement in manufacture of chromate of potash Download PDFInfo
- Publication number
- US4224A US4224A US4224DA US4224A US 4224 A US4224 A US 4224A US 4224D A US4224D A US 4224DA US 4224 A US4224 A US 4224A
- Authority
- US
- United States
- Prior art keywords
- improvement
- potash
- chromate
- manufacture
- ashes
- 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
- 238000004519 manufacturing process Methods 0.000 title description 8
- XMXNVYPJWBTAHN-UHFFFAOYSA-N Potassium chromate Chemical compound [K+].[K+].[O-][Cr]([O-])(=O)=O XMXNVYPJWBTAHN-UHFFFAOYSA-N 0.000 title 2
- 239000002956 ash Substances 0.000 description 12
- 159000000011 group IA salts Chemical class 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- VYZAMTAEIAYCRO-UHFFFAOYSA-N chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 6
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 6
- 150000003839 salts Chemical class 0.000 description 6
- 239000011780 sodium chloride Substances 0.000 description 6
- 235000015320 potassium carbonate Nutrition 0.000 description 4
- 239000003513 alkali Substances 0.000 description 2
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229940072033 potash Drugs 0.000 description 2
- KWYUFKZDYYNOTN-UHFFFAOYSA-M potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G37/00—Compounds of chromium
- C01G37/14—Chromates; Bichromates
Definitions
- My improvement in this process consists in the use of a large proportionate quantity of wood-ashes as a substitute for its equivalent of the carbonate of potash or other alkaline salt; and this substitution is not made for the mere purpose of lessening the quantity of the alkaline salts of commerce, which it may be necessary to employ, but I have proved by careful experiment that a larger quantity of the chromate is obtained from a given weight of the ore when wood-ashes are thus used than when the whole of the alkali is supplied by the salts of commerce, the foreign matters contained in the wood-ashes manifestly producing this effect.
- the process is managed as heretofore-that is to say, the materials are pulverized and then intimately mixed with the wood-ashes.
- the proportion of the respective ingredients will of course vary with their purity, which the manufacturers must ascertain by the usual modes.
- the proportions which I have generally found to answer well are one part, by weight, of the chrome ore and of the alkaline salt, and one and a half part, by weight, of the ordinary wood-ashes. I will observe, however, that in my improved process I have found that the heat may be increased with ad vantage.
Description
UNITED STATES PATENT OFFICE.
ISAAC TYSON, J[t., OF BALTIMORE, MARYLAND.
IMPROVEMENT IN MANUFACTURE OF CHROMATE OF POTASH.
Specification forming part of Letters Patent No. 3,224, dated October 9, 1845.
To all whom it may concern:
Be it known that I, ISAAC TYSON, Jr., of the city of Baltimore, in the State of Maryland, manufacturing chemist, have made a new and useful Improvement in the Manner of Manufacturing the Salt known under the Name of Ohromate of Potash and I do hereby declare that the following is a full and exact description thereof.
My improvement in this process consists in the use of a large proportionate quantity of wood-ashes as a substitute for its equivalent of the carbonate of potash or other alkaline salt; and this substitution is not made for the mere purpose of lessening the quantity of the alkaline salts of commerce, which it may be necessary to employ, but I have proved by careful experiment that a larger quantity of the chromate is obtained from a given weight of the ore when wood-ashes are thus used than when the whole of the alkali is supplied by the salts of commerce, the foreign matters contained in the wood-ashes manifestly producing this effect. In other respects the process is managed as heretofore-that is to say, the materials are pulverized and then intimately mixed with the wood-ashes. The proportion of the respective ingredients will of course vary with their purity, which the manufacturers must ascertain by the usual modes. The proportions which I have generally found to answer well are one part, by weight, of the chrome ore and of the alkaline salt, and one and a half part, by weight, of the ordinary wood-ashes. I will observe, however, that in my improved process I have found that the heat may be increased with ad vantage.
Having thus fully described the nature of my improvement in the process of manufacturing the salts of chrome, what I claim therein as new, and desire to secure by Letters Patent, is-
The using of wood-ashes in mixture with the chrome ore and with the alkaline salt, for the purpose and in the manner herein fully set forth. I
ISAAC TYSON, JR.
Witnesses:
WM. M. J ITTON, LLOYD NORRIS.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US4224A true US4224A (en) | 1845-10-09 |
Family
ID=2064525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US4224D Expired - Lifetime US4224A (en) | Improvement in manufacture of chromate of potash |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US4224A (en) |
-
0
- US US4224D patent/US4224A/en not_active Expired - Lifetime
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