US882637A - Process of producing slag-free ferrochromium. - Google Patents
Process of producing slag-free ferrochromium. Download PDFInfo
- Publication number
- US882637A US882637A US38305907A US1907383059A US882637A US 882637 A US882637 A US 882637A US 38305907 A US38305907 A US 38305907A US 1907383059 A US1907383059 A US 1907383059A US 882637 A US882637 A US 882637A
- Authority
- US
- United States
- Prior art keywords
- slag
- free
- pot
- molten
- alloy
- 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
- 238000000034 method Methods 0.000 title description 5
- 229910000604 Ferrochrome Inorganic materials 0.000 title 1
- 239000002893 slag Substances 0.000 description 19
- 229910045601 alloy Inorganic materials 0.000 description 8
- 239000000956 alloy Substances 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 239000007787 solid Substances 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- -1 .inagne'siuni Chemical compound 0.000 description 1
- 101100298222 Caenorhabditis elegans pot-1 gene Proteins 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 101100400378 Mus musculus Marveld2 gene Proteins 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 235000010210 aluminium Nutrition 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
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
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/0087—Treatment of slags covering the steel bath, e.g. for separating slag from the molten metal
Definitions
- the slags produced in. the manufacture of ferrochroinium in an electric furnace are highly basicand infusihle, containing oxids of calcium, .inagne'siuni, chromium. and alu minium insuch proportions that the melting point of the slag isthiglrer than that of the 3" ,In order to effect a separation of' the slag and. alloy, itiscustomar to tap the entire. contents of the electric furnace into a pot having a refractory lining, allow it to remain therein until the slag and alloy have partially solidified, and then dump the mass into 'a ter toeornpletcthe cooling. Slag'andafih 'herentfused portions of the pot--lining are.
- the heavier alloy'suhsides and the supenneumbent slag quickly s'ohdifies or stitfens, while the metal beneath remains molten.
- the tap' hole-1n the'hottom of the pot is then opened and the molten ferrochromiui'n isrun out into the in ot mold.
- the solid body of slagis then isehar cd from the pot, which is re lined for furt 'ier use.
- Suitable apparatus is shown in the aooompanymg drawing, in which the figure is a transverse vertical section of the pot and 1ngot mold.
- the cast iron. pot 1 mounted on Wheels 2, has a tlnn-fire-clay lining 3.
- the lower end of thepot is a taphole. 4 normally closed by a refractory plug.
- Beneath the pot is an ingot mold- 5, A body of solidified or stiffened slag 6 is shown in the up er half of the pot, while the molten ferroc ironiiuni 7 is flowing through. the open taphole into the mold.
Landscapes
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Description
No 1,802, 37, mmrmmm 24 ma.
.T. anupman. I 1PROG'BS'S1OP PRODUCING SLAG FREE FERROGHROMIUMQ v I APPLICATi'ON FILED JULY 10 1907 UNITED sTA'rns PATENT OFFICE.-
.IOHN ll. IILFrL-xttt); OF FERRISJYVES'I. VIRGINIA, ASSIGNOR TO ELEOTRO METALLURGICAL ("O1\ll..-XNY, OF CHICAGO, ILIAINQIS A CORPORATION OF WEST VIRGINIA.
BBOGESS 0F PnonUorNe- SLAG-FREE FERnocHRoMniM.
Specification oi'Lettera Patent.
Patented March 24, 1908.
Application filed. .n'ii 'io, 901, semi No. 353,059,
To all who-mit mwy concern. Be it known that I, JOHN B. 'HUFFARQ, a' citizen of the United States, residing at Ferris, in the eonnt'y of Fayette and State of West Virginia, have invented certain new and useful Improvements in lfrooesses of Producing Slag-Free Ferr0ohron1iun1,' of which the following is a specification. I
The slags produced in. the manufacture of ferrochroinium in an electric furnace are highly basicand infusihle, containing oxids of calcium, .inagne'siuni, chromium. and alu minium insuch proportions that the melting point of the slag isthiglrer than that of the 3" ,In order to effect a separation of' the slag and. alloy, itiscustomar to tap the entire. contents of the electric furnace into a pot having a refractory lining, allow it to remain therein until the slag and alloy have partially solidified, and then dump the mass into 'a ter toeornpletcthe cooling. Slag'andafih 'herentfused portions of the pot--lining are.
then. broken and chipped away from the alloy by pneumatic hammers or hand tools. This process s expensiveand unsatisfactory as the slag is very hard and adheres so tenaciously .-that some of it remains and is carried by the alloy into the molten steel to which the ferrochronii'uin is added, to the injury of. the finished prod net.
The present in ven U051 tin-improved procj ess oi nlitainihg (dean ferrool'iroinium by etfectively sgajftthting the molten alloy and slag. Acobrding' to this process the ferro-' chromium and slag are tapped from the elec- "tric furnace into a pot-having e. lining.
The heavier alloy'suhsides and the supenneumbent slag quickly s'ohdifies or stitfens, while the metal beneath remains molten. The tap' hole-1n the'hottom of the pot is then opened and the molten ferrochromiui'n isrun out into the in ot mold. The solid body of slagis then isehar cd from the pot, which is re lined for furt 'ier use.
Suitable apparatus is shown in the aooompanymg drawing, in which the figure is a transverse vertical section of the pot and 1ngot mold.
The cast iron. pot 1, mounted on Wheels 2, has a tlnn-fire-clay lining 3. ,In' the lower end of thepot is a taphole. 4 normally closed by a refractory plug. Beneath the pot is an ingot mold- 5, A body of solidified or stiffened slag 6 is shown in the up er half of the pot, while the molten ferroc ironiiuni 7 is flowing through. the open taphole into the mold.
I claim:
1. The process of producing metals free. from slags of relatively-high melting-points, which consists in discharging the molten.
.metal and slag into a vessel, allowing the metal and slag to stratify and the slag to solidify, and separating the molten metal from the solid slag.
2. The process of producing slag-free ferrochroinium, which consists in discharging the molten ferrochrornium and slag into a vessel,
allowing the alloy and slag to stratify and the SltHl' to solidify, and separatingthe molten.
alloy from the solid slag.
In testimony whereof, I afhX my signature in presence. of two witnesses.
JOHN B. I-I'UFFARD.
Witnesses:
:1, R. En irANns,
GEO. T. tnizrnas rnn,
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US38305907A US882637A (en) | 1907-07-10 | 1907-07-10 | Process of producing slag-free ferrochromium. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US38305907A US882637A (en) | 1907-07-10 | 1907-07-10 | Process of producing slag-free ferrochromium. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US882637A true US882637A (en) | 1908-03-24 |
Family
ID=2951076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US38305907A Expired - Lifetime US882637A (en) | 1907-07-10 | 1907-07-10 | Process of producing slag-free ferrochromium. |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US882637A (en) |
-
1907
- 1907-07-10 US US38305907A patent/US882637A/en not_active Expired - Lifetime
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