CN2673875Y

CN2673875Y - Anti-permeation and anti-floating type ceramic underlay for blast-furnace

Info

Publication number: CN2673875Y
Application number: CN 200320101372
Authority: CN
Inventors: 徐瑞图; 张建来; 何汝生
Original assignee: Beijing Ruier Nonmetal Materials Co ltd
Current assignee: Beijing Ruier Nonmetal Materials Co ltd
Priority date: 2003-10-22
Filing date: 2003-10-22
Publication date: 2005-01-26
Anticipated expiration: 2013-10-22

Abstract

The utility model relates to an inner liner made of refractory materials of a blast furnace bottom, particularly a permeation resisting and floatage resisting ceram underlay for a blast furnace. The utility model is formed by bricking a plurality of centre bricks, transition bricks, and circumference bricks, or inner bricks and outer bricks. A single brick bricking surface in the ceram underlay assembled by the centre bricks, the transition bricks and the circumference bricks, or the inner bricks and the outer bricks is a matching falt surface or a curved surface with a concave convex mosaic structure. The utility model isn't provided with bricking brick joints in linear connection between hot and cold surfaces. The danger that smelt products, such as high temperature iron water, through enter brick liners can be avoided. The concave convex mosaic structure on the corresponding surface of each refractory brick forms automatic locking in multiple directions between the single refractory bricks. The floatage of the refractory bricks can be avoided. The integral stability of the ceram underlay can be ensured. The utility model which can extend the service life of the inner liner on the blast furnace bottom is suitable for modern longevous blast furnaces with various volumes.

Description

Impermeable, anti-buoyant blast furnace ceramic blanket

(1), technical field: the utility model relates to refractory lining at the bottom of a kind of State of Blast Furnace, particularly a kind of impermeable, anti-buoyant blast furnace ceramic blanket.

(2), background technology: at present, in order to prolong the work-ing life of State of Blast Furnace blowing-in burden(ing) brick, the general ceramic blanket that adopts the refractory brick of the straight type with smooth-flat-surface, the straight type that tilts or camber to build by laying bricks or stones at the brick fuel hot side.

The ceramic blanket that above-mentioned refractory brick is built by laying bricks or stones has been avoided the direct contact oven blowing-in burden(ing) of smelting product bricks such as high temperature liquid iron on the macroscopic view, played the purpose of protection furnace bottom brick fuel, but there is following technological deficiency in this ceramic blanket:

When (1) adopting straight type refractory brick to build by laying bricks or stones, the straight-through brickwork joint of the cold and hot surface that exists level and smooth binding surface to form between the monolithic refractory brick, high temperature liquid iron infiltrates the bonding surface of ceramic blanket and ceramic blanket and furnace bottom brick fuel easily under other physical pressure effect in self static pressure and blast furnace, and spread everywhere; Simultaneously, these straight type refractory brick that only have smooth-flat-surface are difficult to constitute the ceramic blanket of monolithic stability, and monolithic refractory brick occurs floating easily.

(2) when adopt straight type or arcual refractory brick are built by laying bricks or stones, though facing directly of tilting or cambered surface outer shroud brick has overcome the defective that straight shaped brick is built by laying bricks or stones, the outer shroud brick has limited the floating of interior ring brick.But the bonding surface of building by laying bricks or stones between these refractory brick remains the straight-through brickwork joint of cold and hot surface, and high temperature liquid iron still is easy to infiltrate by these straight-through brickwork joints the bonding surface of ceramic blanket and ceramic blanket and furnace bottom brick fuel, and diffusion everywhere; Simultaneously, the expansion stress of interior ring refractory brick is faced directly by this inclination or cambered surface has added upwards thrust for outer shroud refractory brick, is harmful to the monolithic stability of ceramic blanket.

Because there is above-mentioned technical deficiency in present known blast furnace ceramic blanket, they are difficult to satisfy the long-lived requirement of modern blast furnace.

(3), utility model content: the purpose of this utility model is to overcome disadvantages of background technology; prolong the work-ing life of blast furnace ceramic blanket; more effectively protect the furnace bottom brick fuel, improve the ironmaking economic benefit of enterprises, design impermeable, anti-buoyant blast furnace ceramic blanket.

The technical solution of the utility model is: a kind of impermeable, anti-buoyant blast furnace ceramic blanket, by center brick, transitional brick and the peripheral brick of some amount, perhaps interior brick forms with outer brick building.Single brick bricklaying surface in the ceramic blanket that is combined by these center bricks, transitional brick and peripheral brick or interior brick, outer brick is coupling plane or the curved surface that has concavo-convex pattern structure.

The center brick of building ceramic blanket by laying bricks or stones can be outstanding rectangle or the trapezoidal or protruding band of arc on all or part of brick face, or the complete or non-complete round platform of rectangle or trapezoidal or arc groove, cylindrical or polygon cylindricality are arranged.

Build peripheral brick by laying bricks or stones and can be rectangle or trapezoidal or arc groove are arranged on all or part of brick face, perhaps have outstanding rectangle or horizontal section trapezoidal or the protruding band of arc to be shaped as fan-shaped trapezoidal or polygonal skewed or vertical shape cylinder in the transitional brick of center brick periphery and transitional brick periphery.

Build the interior brick of ceramic blanket by laying bricks or stones and build outer brick around the interior brick by laying bricks or stones and can be outstanding rectangle or the trapezoidal or protruding band of arc are arranged on all or part of brick face, the skewed or vertical shape rectangle or the Polygons cylinder of rectangle or trapezoidal or arc groove perhaps arranged.

Build by laying bricks or stones the peripheral brick of ceramic blanket ragged edge or outside the bricklaying surface that contacts of other brick of brick and blast furnace can be outstanding rectangle or the trapezoidal or protruding band of arc, the plane of rectangle or trapezoidal or arc groove is perhaps arranged.

The refractory brick of building ceramic blanket by laying bricks or stones can adopt the method for burning till or drying behind the refractory raw material of components such as trioxygen-containingization two aluminium, silicon carbide, silicon nitride repressed or vibration or the casting to make.

The useful positively effect that the utlity model has is:

(1) builds the cold and hot surface that the ceramic blanket that forms linearly links to each other by laying bricks or stones by the monolithic refractory brick of some coupling planes that have a concavo-convex pattern structure or curved surface and build brickwork joint by laying bricks or stones, avoided the perforation of smeltings products such as high temperature liquid iron to pierce the danger of bricking.

(2) each refractory brick is built the concavo-convex pattern structure on the corresponding surface by laying bricks or stones, has formed the multidirectional self-locking between the monomer refractory brick, has avoided the floating of refractory brick, can guarantee the monolithic stability of ceramic blanket.

(3) prolong the bottom lining life-span, improved the blast furnace ironmaking economic benefit of enterprises.

(4), description of drawings

Fig. 1 ceramic blanket structural representation that circular platform type center brick with the concavo-convex coupling face of trapezoidal shape, tilt fan-shaped transitional brick and peripheral brick are built by laying bricks or stones of serving as reasons.

Fig. 2 is the circular platform type center brick synoptic diagram with the concavo-convex coupling face of trapezoidal shape.

Fig. 3 is the fan-shaped transitional brick synoptic diagram of inclination with the concavo-convex coupling face of trapezoidal shape.

Fig. 4 is that three sides have the fan-shaped peripheral brick synoptic diagram of inclination that the concavo-convex coupling face of trapezoidal shape and lower surface have the protruding band of arc.

Fig. 5 is that three sides have the fan-shaped peripheral brick synoptic diagram of inclination that the concavo-convex coupling face of trapezoidal shape and upper surface have arc groove.

Interior brick of vertical rectangle and the outer brick ceramic blanket structural representation of building that Fig. 6 serves as reasons and has the concavo-convex coupling face of arc shape.

Fig. 7 is the outer brick synoptic diagram of vertical rectangle that three sides have the concavo-convex coupling face of arc shape.

Fig. 8 has brick synoptic diagram in the vertical rectangle of the concavo-convex coupling face of arc shape for the side.

Fig. 9 ceramic blanket structural representation that the cylinder shape center brick with the concavo-convex coupling face of arc shape, vertical fan-shaped transitional brick and peripheral brick are built by laying bricks or stones of serving as reasons.

Figure 10 is the cylinder shape center brick synoptic diagram with the concavo-convex coupling face of arc shape.

Figure 11 has the vertical fan-shaped transitional brick synoptic diagram of the concavo-convex coupling face of arc shape for the side.

Figure 12 is the vertical fan-shaped peripheral brick synoptic diagram that three sides have the concavo-convex coupling face of arc shape.

(5), specific embodiment

Below in conjunction with accompanying drawing the utility model is further described.

Embodiment one, referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5.1 is the furnace bottom brick fuel among the figure, 2 is the cupola well brick fuel, 3 is that three sides have the fan-shaped peripheral brick of inclination that the concavo-convex coupling face of trapezoidal shape and lower surface have the protruding band of arc, 4 for having the fan-shaped transitional brick of inclination of the concavo-convex coupling face of trapezoidal shape, 5 for having the circular platform type center brick of the concavo-convex coupling face of trapezoidal shape, and 6 is that three sides have the fan-shaped peripheral brick of inclination that the concavo-convex coupling face of trapezoidal shape and upper surface have arc groove.

Embodiment two, referring to Fig. 6, Fig. 7 and Fig. 8.Among the figure, number identically, represent same meaning, do not repeat with embodiment one.Difference is: in the present embodiment, 7 is the outer brick of vertical rectangle that three sides have the concavo-convex coupling face of arc shape, and 8 have brick in the vertical rectangle of the concavo-convex coupling face of arc shape for the side.

Embodiment three, referring to Fig. 9, Figure 10, Figure 11 and Figure 12.Among the figure, number identically, represent same meaning, do not repeat with embodiment one.Difference is: in the present embodiment, 9 is the vertical fan-shaped peripheral brick that three sides have the concavo-convex coupling face of arc shape, and 10 for the side has the vertical fan-shaped transitional brick of the concavo-convex coupling face of arc shape, and 11 for having the cylinder shape center brick of the concavo-convex coupling face of arc shape.

Claims

1, a kind of impermeable, anti-buoyant blast furnace ceramic blanket, center brick, transitional brick and peripheral brick by some amount, perhaps interior brick forms with outer brick building, and it is characterized in that: the single brick bricklaying surface in the ceramic blanket that combines by center brick, transitional brick and the peripheral brick of some amount or by the interior brick of some amount, outer brick is coupling plane or the curved surface that has concavo-convex pattern structure.

2, impermeable, anti-buoyant blast furnace ceramic blanket according to claim 1, it is characterized in that: center brick can be outstanding rectangle or the trapezoidal or protruding band of arc on all or part of brick face, the complete or non-complete round platform of rectangle or trapezoidal or arc groove, cylindrical or polygon cylindricality are perhaps arranged.

3, impermeable, anti-buoyant blast furnace ceramic blanket according to claim 1 and 2, it is characterized in that: build peripheral brick by laying bricks or stones and can be rectangle or trapezoidal or arc groove are arranged on all or part of brick face, perhaps have outstanding rectangle or horizontal section trapezoidal or the protruding band of arc to be shaped as fan-shaped trapezoidal or polygonal skewed or vertical shape cylinder in the transitional brick of center brick periphery and transitional brick periphery.

4, impermeable, anti-buoyant blast furnace ceramic blanket according to claim 1, it is characterized in that: interior brick and build outer brick around the interior brick by laying bricks or stones and can be outstanding rectangle or the trapezoidal or protruding band of arc are arranged on all or part of brick face perhaps has the skewed or vertical shape rectangle or the Polygons cylinder of rectangle or trapezoidal or arc groove.

5, impermeable, anti-buoyant blast furnace ceramic blanket according to claim 1, it is characterized in that: the bricklaying surface that peripheral brick or other brick of outer brick and blast furnace contact can be outstanding rectangle or the trapezoidal or protruding band of arc, and the plane of rectangle or trapezoidal or arc groove is perhaps arranged.

6, impermeable, anti-buoyant blast furnace ceramic blanket according to claim 3, it is characterized in that: the bricklaying surface that peripheral brick or other brick of outer brick and blast furnace contact can be outstanding rectangle or the trapezoidal or protruding band of arc, and the plane of rectangle or trapezoidal or arc groove is perhaps arranged.

7, impermeable, anti-buoyant blast furnace ceramic blanket according to claim 4, it is characterized in that: the bricklaying surface that peripheral brick or other brick of outer brick and blast furnace contact can be outstanding rectangle or the trapezoidal or protruding band of arc, and the plane of rectangle or trapezoidal or arc groove is perhaps arranged.