US1459895A - Edwabd l - Google Patents

Edwabd l Download PDF

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US1459895A
US1459895A US1459895DA US1459895A US 1459895 A US1459895 A US 1459895A US 1459895D A US1459895D A US 1459895DA US 1459895 A US1459895 A US 1459895A
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plates
furnace
steel
stock line
stock
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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/08—Top armourings

Definitions

  • Figure 2 is a fragmentary section on an enlarged scale showing the stock line protec-tion.
  • the upper portion or stock line section 3 of the furnace is provided with the wear plates t havine flanges 5 extending in ardly of the lin-ich work to anchor the plates thereto. 'lhe plates are placed a small distance apart in order to provide for their expansion when heated.
  • the top o he furnace is provided with the hopper 6, the lower portion ot' which is closed byithe hell 7. It is to he understood that in the operation of the furnace, a, charge of ore. stone or coke is placed in the hopper G and then is dumped 'into the furnace by lowering the bell 7.
  • the bell 7 is operated by well known means which form no part of the present invew tion and have not been shown. This hell distributes the charge. throughout the crcumference of the furnace throwing it against the. plates 4 protectincr the stock line. y
  • These plates are formed of a steel having added thereto manganese. in percentagns rurr ning over 3%.
  • This manA gallese has-heen shown hy experience to forni a steel which resists wear iu this application far better than ordinary steel or cast iron.
  • This manganese steel contains less than lj, yi of carbon and has the necessary hardness and strength to withstand the wear and tear To HU fr/mm it may concern.'
  • 'l'his invention relates to a new and inlprovcd nic-ans for protectingr the top portion of blast furnaces known as the stoel( line, and more particularly to a composition of metal adapted for use in such protection.
  • a hlast furnace is lined with refractory hrick to resist the heat action of combustion ⁇
  • the colte. ore and limestone or other tluxng material are introduced into the furnace from above, and in the usual form.
  • this material distributed hv means of a hell.
  • This hell throws the material against the sides of a furnace adjacent the top.
  • This portion of the furnace is known the stock line and protecting means must he provided or otherwise the hricltr walls are rapidly worn away by the action of the materials implnging against them. It has been common practice to protect this portion of the furnacel by means of cast iron or steel plates or hy a continuousrinlg'v of cast iron or steel.
  • lt is a further object to provide material '.l' great hardness and toughness whereby the protecting plates may be made relatively iight and whereby their cost is reduced.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Iron (AREA)

Description

June 26, 923r 1,459,895
E. L. IVES BLAST FURNACE STOCK LINE PROTECTION Filed Oct. 24 1921 Patented June 26, |923.
UNITED STATES PATENT OFF-ICE.
EDWARD L, IVES, OF CHICAGO, ILLINOIS, ASSIGNR T FREYN. BRASSERT & COM- PANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.
BLASTFURNACE STOCK-LINE PROTECTION.
Application flied october 24, 1921. sierial No. 509,774.
havingr stock line protcctin,rr plates, 1u the accompanyingr drawings, in whichi Figure, liis a. somewhat diagrammatic cross section of a blast furnace; and
Figure 2 is a fragmentary section on an enlarged scale showing the stock line protec-tion.
As shown in the drawings, the upper portion or stock line section 3 of the furnace is provided with the wear plates t havine flanges 5 extending in ardly of the lin-ich work to anchor the plates thereto. 'lhe plates are placed a small distance apart in order to provide for their expansion when heated. The top o he furnace is provided with the hopper 6, the lower portion ot' which is closed byithe hell 7. It is to he understood that in the operation of the furnace, a, charge of ore. stone or coke is placed in the hopper G and then is dumped 'into the furnace by lowering the bell 7. The bell 7 is operated by well known means which form no part of the present invew tion and have not been shown. This hell distributes the charge. throughout the crcumference of the furnace throwing it against the. plates 4 protectincr the stock line. y
These plates are formed of a steel having added thereto manganese. in percentagns rurr ning over 3%. The addition ol' this manA gallese has-heen shown hy experience to forni a steel which resists wear iu this application far better than ordinary steel or cast iron. This manganese steel contains less than lj, yi of carbon and has the necessary hardness and strength to withstand the wear and tear To HU fr/mm it may concern.'
lo it` known that l, [Comuni L. Ives, a citizen of the l'nited AQtates., residing at (laicago. in the county ot @ook and State ol' lllinoh. hanl invented certain new I.1nd useful improvements in l last-If`urn:1Co Stoclehiuc Protections, ot' which the following is a specification.
'l'his invention relates to a new and inlprovcd nic-ans for protectingr the top portion of blast furnaces known as the stoel( line, and more particularly to a composition of metal adapted for use in such protection.
As is well known in the art` a hlast furnace is lined with refractory hrick to resist the heat action of combustion` The colte. ore and limestone or other tluxng material are introduced into the furnace from above, and in the usual form. this material distributed hv means of a hell. This hell throws the material against the sides of a furnace adjacent the top. This portion of the furnace is known the stock line and protecting means must he provided or otherwise the hricltr walls are rapidly worn away by the action of the materials implnging against them. It has been common practice to protect this portion of the furnacel by means of cast iron or steel plates or hy a continuousrinlg'v of cast iron or steel. These methods of protection have not been satisfactory (lue to the qualities of materials used. If cast iron is used, with its high carbon content, the. metal is' soft and the carbon which amounts to about 4% is gradually eliminated from the metal causing deterioration and weakening thertI- ot. If steel is used in which the carhon to which the stock line of the furnace is intent has heen reduced to H fj or' lower` subjected. the metal is so soft that it is easily worn I claim:
1. In a blast furnace, protectincr plates lo` cated at the stock line thereof, said plates containingrr in excess of three per cent of manganese. i2. In a. blast furnace, steel protecting plates located at the stock line thereof, -said plates containingr less than one and onehalf per cent of carbon and in excess of three per cent of manganese.
Signed at Chicago, Illinois, this th dav of October, 1921.
It is an object of my invention to provide a material for stock line wear plates which is adapted to ,give the necessary strength and esistalu'e to wear and ahrasion.
lt is a further object to provide material '.l' great hardness and toughness whereby the protecting plates may be made relatively iight and whereby their cost is reduced.
Other and further objects will appear aus the description proceeds.
In order to make clear the application of my invention, I have shown a. blast furnace EDWARD l., lVllS.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2713481A (en) * 1952-10-17 1955-07-19 Modern Equipment Co Cupola linings, including railroad rails

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2713481A (en) * 1952-10-17 1955-07-19 Modern Equipment Co Cupola linings, including railroad rails

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