US289086A - Assigxob to him - Google Patents
Assigxob to him Download PDFInfo
- Publication number
- US289086A US289086A US289086DA US289086A US 289086 A US289086 A US 289086A US 289086D A US289086D A US 289086DA US 289086 A US289086 A US 289086A
- Authority
- US
- United States
- Prior art keywords
- metal
- nitrate
- sulphate
- manganese
- iron
- 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
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 28
- 229910052751 metal Inorganic materials 0.000 description 28
- 239000002184 metal Substances 0.000 description 28
- 229910052742 iron Inorganic materials 0.000 description 14
- 239000000126 substance Substances 0.000 description 14
- DVARTQFDIMZBAA-UHFFFAOYSA-O Ammonium nitrate Chemical compound [NH4+].[O-][N+]([O-])=O DVARTQFDIMZBAA-UHFFFAOYSA-O 0.000 description 12
- SQQMAOCOWKFBNP-UHFFFAOYSA-L Manganese(II) sulfate Chemical compound [Mn+2].[O-]S([O-])(=O)=O SQQMAOCOWKFBNP-UHFFFAOYSA-L 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
- 239000012535 impurity Substances 0.000 description 6
- PWHULOQIROXLJO-UHFFFAOYSA-N manganese Chemical class [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 6
- 229910052748 manganese Inorganic materials 0.000 description 6
- 239000011572 manganese Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- QAOWNCQODCNURD-UHFFFAOYSA-L sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 4
- 229910052698 phosphorus Inorganic materials 0.000 description 4
- 239000011574 phosphorus Substances 0.000 description 4
- 238000007670 refining Methods 0.000 description 4
- 238000009835 boiling Methods 0.000 description 2
- KRTSDMXIXPKRQR-UHFFFAOYSA-N dimethyl [4-(methylamino)-4-oxobut-2-en-2-yl] phosphate Chemical compound CNC(=O)C=C(C)OP(=O)(OC)OC KRTSDMXIXPKRQR-UHFFFAOYSA-N 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- NHNBFGGVMKEFGY-UHFFFAOYSA-N nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 2
- 239000002674 ointment Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C1/00—Refining of pig-iron; Cast iron
- C21C1/02—Dephosphorising or desulfurising
Definitions
- My invention relates to an improvement in the manufacture of iron and steel; and it consists in treating the molten met-al with nitrate of ammonia and sulphate manganese in order to refine it and to remove impurities there from.
- These chemicals may be added or in- 5 troduced into the molten metal after it has been run from the furnace into the ladle or mold, or they may be added to the metal in Bessemer converters,puddling, refining, openhearth, cupola, blast, and other furnaces.
- the amount of nitrate of ammonia and sulphate manganese to be added to the metal depends upon the quality of the iron or steel and the amount of impurities, phosphorus, and other foreign substances contained therein; but for ordinary grades of metal forty-five ounces of nitrate of ammonia and a like quantity of sulphate manganese may be used with each ton of metal.
- the advantages of my invention are that the phosphorus and other foreign substances are removed from the metal, and it is therefore tough and fibrous throughout, and a superior quality of manufactured iron or steel may be produced from an inferior quality of metal.
Description
UNITED STATES PATENT OFFICE.
WILLIAM GRIFFITH, OF PITTSBURG, PENNSYLVANIA, ASSIGXOR TO HIM- SELF AND JAMES C. GRAY, OF SAME PLACE. I
PROCESS OF PURIFYING MOLTEN IRON.
SPECIFICATION forming part of Letters Patent No. 289,086, dated November 27, 1883.
' Application filed May 25,1883. (No specimens.)
To all whom it may concern:
Be it known that I, .VVILLIAM GRIFFITH, of Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvementin Processes for Purifying Molten Iron; and I do hereby declare the following to be a full, clear, and exactde scription thereof.
My invention relates to an improvement in the manufacture of iron and steel; and it consists in treating the molten met-al with nitrate of ammonia and sulphate manganese in order to refine it and to remove impurities there from. These chemicals may be added or in- 5 troduced into the molten metal after it has been run from the furnace into the ladle or mold, or they may be added to the metal in Bessemer converters,puddling, refining, openhearth, cupola, blast, and other furnaces.
I will now describe my invention, so that others skilled in the art may use the same. a WVhen the metal has been reduced to amolten state in thefurnace, nitrate of ammonia and sulphate manganeseequal parts of each are 5 added thereto. These chemicals unite with the impurities and rise to the surface with the slag, leaving the refined and purified metal free to be drawn from the furnace. In the puddling-furnace the chemicals should be added to the metal while it is still boiling and before it comes to nature.
In order that the chemicals may act properly, care should be taken to place them beneath the surface of the molten metal.
5 may be easily accomplished by inclosing them in thin metal cases or boxes.
Instead of introducing the nitrate of ammoni a and sulphate manganese into the furnace,
they may be placed in the ladle, mold, or Bes- 0 semer converter before the molten metal is poured therein.
This
The amount of nitrate of ammonia and sulphate manganese to be added to the metal depends upon the quality of the iron or steel and the amount of impurities, phosphorus, and other foreign substances contained therein; but for ordinary grades of metal forty-five ounces of nitrate of ammonia and a like quantity of sulphate manganese may be used with each ton of metal.
The advantages of my invention are that the phosphorus and other foreign substances are removed from the metal, and it is therefore tough and fibrous throughout, and a superior quality of manufactured iron or steel may be produced from an inferior quality of metal.
I am aware that nitrate of ammonia and salts of manganese have heretofore been used independently of each other andin conj unction each with various other chemicals in the preparation of physio for the purification of iron, 850., and do not herein claim the same; but I am not aware that the sulphate of manganese has heretofore been so employed, or that a compound consisting of only the two articles herein specified has been so used. Therefore,
Having thus described my invention, What I claim, and desire to secure by Letters Patent, 1s'
The process herein described of refining and purifying iron and steel, which consists in subjecting the molten metal to the action of a compound consisting of the two ingredients, nitrate of ammonia and sulphate of manganese,in substantially the proportions specified, as and for the purposes set forth.
In testimony whereof I here hereunto set my hand this 19th day of May, A. D. 1883.
IVILLIAM GRIFFITH.
Witnesses:
W. B. CoEWIN, J. K. BAKEWELL.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US289086A true US289086A (en) | 1883-11-27 |
Family
ID=2358278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US289086D Expired - Lifetime US289086A (en) | Assigxob to him |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US289086A (en) |
-
0
- US US289086D patent/US289086A/en not_active Expired - Lifetime
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