US1016350A

US1016350A - Brick for metallurgic furnaces.

Info

Publication number: US1016350A
Application number: US54871010A
Authority: US
Inventors: William N Mcknight; Robert H Youngman
Original assignee: Harbison Walker Refractories Co
Current assignee: Harbison Walker Refractories Co
Priority date: 1910-03-11
Filing date: 1910-03-11
Publication date: 1912-02-06
Anticipated expiration: 1929-02-06

Description

W. N. MOKNIGHT & R. H. YOUNGMAN. BRICK FOB. METALLURGIG FURNACES.

APPLICATION FILED MAR. 11. 1910.

1,016,350. Patented Feb. 6,1912.

F |G.5 v

'2 WITNESSES. mvsms ggiltf w was A L To all whom, it ma concern:

' UNITED STAT S.

WILLIAM N. MOKNIGHT AND BOBENT H. YOUNGIMAN,-OF PITTSBURGH, PENNSYLVANIA,

ASSIGNORS TO HARBISONFWALK ER REFLBACTORIES 00,, OF PITTSBURGH, PENNSYL- PATENT orrion.

VANIA, A conronsrxon or PENNSYLVANIA.

BRICK FOR METALLURGIC FURNACES.

Specification of Iietterslatent.

' Be it known it at we, WI LIAM Mc- Kmon'r and. ROBERT H. YOUNGMAN, res1- dents of Pittsburgh, in the county of AL legheny and State of Pennsylvania, have invented a new and useful Improvement in Bricks for Metallurgic Furnaces; and we do hereby declare the following to be a full, clear, and exact description thereof.

@ur invention relates to refractory brick.

. for ,metallurgic furnaces.

ill

all

I jof a material w peratures without yielding to pressure .or

7 ing of good qualitl The object of our invention is to provide a brick for metallurgic furnaces whose body port-ion is composed of a material which will resist high'temperatureswithout yielding to pressure or losing its shape, and whose exposed side is composed of material that will likewise resist high temperatures and at the same time ofl'er greater resistance to the chemical action of metals, slags,

gases, etc.

To these ends our invention COIIIPIISQS,

generally stated, a refractory brick for, met

allurgic furnaces comprising a main body portion of a refractory material, and an added similar body portion of a thickness not less than one-fourth of an inch, and

forming the exposed face of the brick of a refractory mater'iahless subject. to chemical action than saidmainbody portion. I

lo the accompanying drawing Figure 1. is a view of the body portion of the brick; Fig. 2 is a view showing the mold with the body-portion of brick therein; Fig. 3 is a view ofthe mold with the brick ready for burning;

finished brick. lhe brick shown in Fig. 5 of the drawing' is composed of two parts; the larger part or main body 2- of the brick being made ich will resist high temits shape. For this purpose we may sing aburned silica brick, or the body of employ tlliev brick may beformed of suitable fire 9 i l" able mold 3, said mold being of such depth The brick-body 2 is placed ina suitthat when the brick-body Qis placed therein the enposedsurface of the brick-bodywill' bebelow thesurface of themold. Aeoat plastic clay or othermaterial that will use *at-aslightly. lower temperature than the material c which the Y Application filed March 11; 1910. Serial N... 548,710.

Fig. l is a view of the bricks in a suitablekiln; and Fig. 5 is a view ofthe' brick-body is made or with which it is to be fused, is applied to the surface of the brick-body to be faced by spreading thereon a thin coating of such material. After a coating of this character has been applied, the material to form the thinner portion mold and fills up the space not occupied by the brick-body. The thickness of this thinnor portion of the, brick should be not less than one fourth of an inch, as it is to form a substantial body portion and not a mere enamel-or glaze such as has been employed in some forms of brick. This material 4 is of a character that will resist high temperatures, and at thesame time better resist the chemical action of metals, slags, gases, and such other substances as are likely to come in contact with the exposed face of the brick at high temperatures in metallurgic furnaces. One of the materials possessin such qualities -is chrome ore, and sufficient water is added to the ore to render itplas'tic, when the same is introduced into the mold, to fill up the mold. The material 4: is then well rammed or pressed into the mold. The-brick should then be dried with a weight 6 upon the upper side, and then brick should preferably bear some weight during the burning to press the two materials together, and the heat will fuse the rials and cause a fused joint uniting the -material 4: securely to the body of thebrick. A number of other materials may be used instead of chrome ore, for instance, burned magnesite may be employed to form a basic lining for the brick, or the exposed aluminous products.

If desired, the body of the brick may be made of unburned material such as unburned fire clay or unburned silica material, -and the portion of chrome, magnesite or ,aluminou's' material may be added to-the unconnecti'on with adding the same to the burned brick-body.- When this method is adopted, the 4 unburned brick would then be burned in asuitable kilnyandthe facing magnesite is'used in connection'with a silica brick body portion the interposed fusible Patented Feb. 6,1912.

coating introduced between the'two mate burned body'of the brick, as. described, in

burned-at the same time. In cases where it of the brick is to be introduced into the' introduced into the kiln-for burning. Each portion may be made of aluminous clays-or fractory material, and

the brickatthe same time of coating may be omitted and a fusion obtained directly between the magnesite and the brick bod by raising the brick to an extremely high temperature.'

'By our invent-ion we provide a brickbody portion which is able to resist high temperatures, and which maintains the lines of the furnaces, such as the side Walls, crowns, etc, while the smaller portion of a refractory nature, is capable of resisting disintegration or chemical action due to metal, slags,

gases, etc.

posed face of the brick a refractory material less sub ect to chemical action than the said main body-portion. 4

2, As a new article of manufacture, a refractory brick for metallurgic furnaces, comprising a main body-portion of a refractony material, and an added smaller body portion of a thickness not less than one-fourth of an inch and forming the exposed face of the brick united to the main body-portion by a fused joint.

In testimony whereof, we the said WIL- LIAM N. MCKNIGHT and ROBERT H; YOUNG- MAN, have hereunto set our hands.

WILLIAM N. McKNIGHT. ROBERT H. YOUNGMAN.