CN101509724A - Smelting blast deflecting wall for vertical pellet furnace and drying bed - Google Patents

Abstract

An air guide wall and a drying bed of a smelting pellet shaft furnace. The beam of the air guide wall is an upper arch and a lower flat structure, and its length is greater than the inner diameter of the furnace. There are beam ventilation holes on the beam body. The inner bushing of the first layer, the girder is cast with explosion-proof castable, and the finished product is dried and high-temperature treated. The wall of the air guide wall is built with vertical wedge-shaped refractory bricks, and there are air guide wall ventilation holes on it. The inner bushings are installed in the air guide wall ventilation holes, and each air guide wall ventilation hole communicates with the corresponding girder ventilation hole. Vertical, stacked up and down in layers to form a chimney shape, the wall body of the air guide wall and the two sides of the beam of the air guide wall are respectively supported by support columns, and the support columns are respectively fastened with the air guide wall and the beam of the air guide wall with fasteners. One body, the two ends of the wind guide wall and the beam of the wind guide wall are respectively inserted into the walls on both sides of the furnace body; the drying bed is supported by supporting beams and located above the furnace body. The invention saves working hours, water, electricity and equipment installation and maintenance costs.

Description

Smelting pellet shaft furnace wind guide wall and drying bed

technical field

The invention relates to a shaft furnace for producing oxidation pellets in the metallurgical industry, in particular to smelting pellets used in the sintering pellet mechanical shaft furnace to support the girder of the wind guide wall and the refractory brick used for the wind guide wall and the pellet drying bed Shaft furnace wind guide wall and drying bed.

Background technique

At present, the raw material pellets used in the smelting blast furnaces of relatively large iron and steel plants in my country are all produced by mechanical shaft furnaces. Because of its high output, good quality, and the ability to use the waste gas produced by the blast furnace itself as fuel in smelting production, it has gradually replaced the old sintering method in recent years. In the prior art, the girder supporting the wind guide wall (also known as the large water beam) is welded by two seamless steel pipes with an elbow at one end, and the cooling water enters from the lower pipe and returns from the upper pipe through the elbow. At this time, the inside of the tube becomes a mixture of water and steam. This is a cooling water circulation process of the girder. As such, the three water cycles are connected together and welded into one side of the girder with a height of about 1.1 meters. Then use steel plates to connect the two sides into a width of 0.78 meters, and divide them into nearly square nine holes with a diameter of about 0.4 meters to form a whole girder.

In the shaft furnace, the wind guide wall and the supporting girder are affected by the large particles of dust and pellet slag entrained by the air flow passing through the ventilation holes. Due to the large particle size and high quality, they cannot be The air flow is brought out from the air guide wall, and under the double action of its own weight and upward airflow, it is suspended on the lower part of the girder and the air guide wall, but the ventilation holes of the girder and the air guide wall are rectangular, and the large particles are retained under the action of centrifugal force. Because the four corners of the ventilation hole are not easy to rotate along with the rotating airflow, there is wandering friction with the welded part of the water pipe and the rib plate, which produces the same phenomenon as the rust removal and sand washing of the metal pipe until the particles are finely ground and the upward thrust of the airflow is greater than It is gradually brought out of the furnace when it is under its own gravity. Repeatedly until it is damaged to the point where it can no longer be used, the girder partition is first washed away due to anhydrous cooling, and other parts are also thinned due to wear and tear. Fatigue cracks occur under continuous air stagnation vibration, and cracks, water leakage or deformation under the action of water vapor pressure , the general use cycle is 6 months or repaired at any time to about 1 year, and its replacement time cannot be synchronized with the wind-guiding wall tiles, because the replacement of the girder must remove the still usable wind-guiding wall tiles. Its life is short and seriously affects production.

The width of the air guide wall is the same as that of the girder, the height is less than 4 meters, and the total weight of the refractory material is more than 30 tons. Each hole in each layer is built vertically on the girder in the shape of a nine-hole chimney. Because its area is larger than the table top of a common press, it cannot be formed. The prior art can only be made with a vibration forming machine, and vibration is used to make up for the lack of pressure. Vibration and pressurization requires an increase in the proportion of moisture and fine powder in the ingredients, and the degree is difficult to control. Due to the above reasons, the product will appear shrinkage deformation, uneven thickness, delamination or fracture during the firing process, resulting in product failure. The pass rate is extremely low. In the prior art, the product can only be guaranteed to reach the masonry standard by reducing the firing temperature, but the product fails to reach the bonding strength. Therefore, the fine powder is washed away first in the process of use, and the aggregate particles are exposed and gradually washed away, forming holes again and again, and the holes cause resistance to the rotation of the particles in the ventilation holes, resulting in particles and The scouring and friction force of the wall increases, and the aggregate particles from the refractory bricks are hard, so the scouring and friction force is even greater, and the vicious cycle continues until it is damaged to the point where it can no longer be used.

The raw pellets on the drying bed are spread reciprocatingly on the top of the drying bed by the belt conveyor. That is to say, when the cloth reaches one end of the distribution machine, the raw material at the top of the other end is empty or thin, and the airflow is under the action of pressure under the drying bed. It moves down here and is discharged in large quantities, resulting in the loss of heat source. It will also cause the green pellets here to crack due to high water content and high heating temperature, resulting in slag particles that affect ventilation and ventilation, and cause difficulties in preheating and roasting. When the cooling zone is wrapped by high-pressure wind, it is a vicious circle of scouring and friction between the ventilation holes of the air guide wall and the hole bricks. Due to the large span of the supporting water beam of the drying bed, it is difficult to withstand the pressure of the working environment during use, resulting in bending and deformation, which affects the drying effect and downward discharge. Wind wall tilt and collapse phenomenon.

Contents of the invention

The purpose of the present invention is to solve the problems of low output and high cost of the smelting shaft furnace due to the short service life of the air guide wall girder, the air guide wall and the drying bed, and to provide a new type of air guide wall beam, air guide wall body and The supporting structure of the drying bed, the beam frame of the girder and the supporting beam of the drying bed are welded by heat-resistant steel, and then poured with castables and fired at high temperature. The wind guide wall is made of vertical wedge refractory brick arch The smelting pellet shaft furnace air guide of the smelting pelletizing shaft furnace is greatly saved by saving the production cost and reducing the accident rate of the shaft furnace. Walls and drying beds.

Realize above-mentioned invention object and adopt following technical scheme:

An air guide wall and a drying bed of a smelting pellet shaft furnace, the air guide wall is supported by girders, the drying bed is located above the air guide wall and supported by supports, and is located in the shaft furnace body.

a. The beam body of the wind guide wall supporting the girder is an upper arch and a lower flat structure, and its length is greater than the inner diameter of the furnace. The beam body is supported by a plurality of metal columns. The inner bushing of the girder ventilation hole is installed in the hole, and the outer surface of the inner bushing of the girder ventilation hole is coated with an anti-adhesive layer. The girder of the wind guide wall is formed by using a steel formwork close to the girder body, and then poured into the girder body Explosion-proof castables are poured and molded, and finished products after drying and high-temperature treatment;

b. The wall body of the air guide wall is built with vertical wedge-shaped refractory bricks, and a plurality of air guide wall ventilation holes are arranged on it. The ventilation holes of the wind wall are poured with castables. Each ventilation hole of the wind-guiding wall is connected to and perpendicular to the corresponding beam ventilation hole. It is stacked up and down to form a chimney, and is located in the ventilation hole of the lower section of the wind-guiding wall. The outer surface of the bushing is brushed with an anti-adhesive layer, and a metal tie rod is installed between the two air guide wall ventilation holes of each layer of the wall, and heat-resistant metal splints with the same hole diameter as the metal tie rod are arranged on both sides of the wall. The heat-resistant metal splint is tightly connected with the metal tie rod, and the arch difference on the upper part of the wind guide wall is leveled and then covered with a cover brick, and a triangular castable top is poured on the cover brick;

c. Both sides of the air guide wall and the beam of the air guide wall are respectively supported by supporting columns. The two ends of the beam of the air guide wall are respectively inserted into the walls on both sides of the furnace body;

d. The drying bed is supported by a supporting beam, which is a triangular beam bracket with a bottom width of 23-28 cm and a height of 45-55 cm.

Compared with the prior art, the remarkable advantage of the present invention is that

1. Cancel the water circulation and softening water system, saving man-hours, water, electricity and equipment installation and maintenance costs. The loss of heat energy is reduced, and the temperature of the high-pressure air transported to the drying bed through the air guide wall is increased, which creates conditions for the high production of the shaft furnace.

2. Erosion resistance and easy repair

Because the wind guide wall girder and the wind guide wall of the present invention are all made and built in an arch shape, under the change of its reburning line, the swelling of the wall body block and the shrinkage of its masonry mud joint can cancel each other out, and the beam and There will be no pressure between the walls and between layers of the wall, and the beam will not be deformed; the bushing between the beam and the wall greatly improves the wear resistance and erosion resistance, and its service life can be improved Several times; due to the anti-sticking layer, the bushing in the ventilation hole and the beam and the wall play the role of a partition, which is conducive to partial repair or replacement of the damaged part of the air guide wall girder or the air guide wall, the beam and the wall The wall body can be used for a long time, and the economic loss and man-hours caused by integral masonry are reduced. The inner liner of the present invention is made of silicon carbide and other hard materials. During the working process, the large-grained pellet slag carried out by the airflow can be quickly ground to fineness by the updraft. Wrapped out of the wind guide wall, reducing the resistance and ventilation air flow caused by the rotation and hovering in this section to the updraft. Use heat-resistant metal pull rods in each layer and each hole to rivet all the refractory materials of the entire air guide wall into one body like rivets, and use triangular inclined columns to support and clamp the supporting beam of the drying bed above to make the air guide wall and the furnace body The upper, lower and both ends of the two sides are connected into one body, which strengthens its stability.

3. Can expand the kiln volume

Properly lengthen the wind guide wall and girder body, and increase the pellet output without increasing the number of operators and equipment, which can reduce the fuel consumption ratio per ton of pellets and make the mechanical sintering shaft furnace a step forward. stride.

4. Green and environmental protection, turning waste into treasure

The high-aluminum porcelain rod bottles and waste mud that have been treated as garbage by high-voltage electric porcelain manufacturers are used as the main raw materials for production. Because its main ingredients are high-alumina powder and high-quality bonded clay with good plasticity, it is ground into slurry by ball stones, vacuum-processed into mud and fired at high temperature. Its products are made of high-alumina homogenized materials. Generally, the aluminum content is about 50%. The temperature is about 1730 degrees, the apparent porosity of the waste porcelain rod bottle is 0.03%, and the hardness can cut glass. It is the first-class raw material for acid resistance, alkali resistance and wear resistance. Bonding agent or clay is combined to make castables or processed into products by machine pressing, which has a wide range of uses. Using its porcelain clay as refractory brick bonding fine powder can promote porcelain bonding and increase brick body strength. The present invention is over The history of treating high voltage electric porcelain as garbage for decades. The waste daily-use ceramics and waste building ceramics are weakly acidic and have high hardness. The waste mud has a high content of potassium and sodium and is easy to sinter. It can be used as raw materials to produce semi-silica bricks and lining bricks used on industrial kiln flues and chimneys. , Low-grade wear-resistant bricks and acid-resistant bricks have strong corrosion resistance, and their use effect is better than that of ordinary clay refractory bricks. The use of it not only saves resources for the country, but also reduces pollution for the society.

Description of drawings

Fig. 1 is a front sectional view of the furnace body of the present invention.

Fig. 2 is a structural schematic diagram of the girder of the wind guiding wall of the present invention.

FIG. 3 is a schematic top view of FIG. 2 .

Fig. 4 is a three-dimensional structural schematic diagram of the air guide wall and the air guide wall girder of the present invention.

Figure 5 is a schematic plan view of the drying bed.

Fig. 6 is a schematic diagram of the corner brick of the air guide wall of the present invention.

Fig. 7 is a schematic diagram of vertical wedge-shaped wall bricks for the air guide wall of the present invention.

In the figure, the walls 1 on both sides of the furnace body, the cover bricks of the air guide wall 2, the girders, the air guide wall ventilation holes and the bushing air outlet 3, the drying bed support beam 4, the air guide wall ventilation hole inner bushing 5, Air guide wall body 6, heat-resistant metal tie rod 7, air guide wall support column 8, heat-resistant metal splint 9, girder ventilation hole inner bushing 10, girder pouring layer 11, girder lower hook 12, girder heat-resistant metal upper hanger 13. The girder is stuck into the wall part 14, the vent hole of the girder 15, the facade of the air guide wall corner brick 16, the castable material for the wind guide wall brick 17, the castable material between the ventilation holes 18, the side surface of the wind guide wall corner brick 19, Girder beam end 20, beam heat-resistant steel column 21, air guiding wall girder 22, flat bricks on the air guiding wall 23, 24, drying bed triangular purlin frame 25, green pellet blanking section 26, drying bed grate bar 27, Wind guide wall vertical wedge-shaped brick side 28.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings.

See Fig. 1, Fig. 4, the wind-guiding wall body 6 of the present embodiment is layered on the wind-guiding wall girder 22, and on both sides of the wind-guiding wall body 6 and the wind-guiding wall girder 22, use triangular herringbone respectively Type support column 8 supports, is positioned at furnace body. The support column 8 is fastened together with the wind-guiding wall body 6 and the wind-guiding wall girder 22 respectively with bolts. The two ends of the support column 8 and the wind guide wall girder 22 are respectively inserted into the walls 1 on both sides of the furnace body. The upper end of the air guide wall 6 is provided with an air guide wall girder and an air guide wall air outlet 3 , and the air outlet 3 is covered with a cover plate brick 2 . The drying bed is supported by the drying bed support beam 4, which is located at the upper part of the furnace body.

See Fig. 1, Fig. 2, Fig. 3 and Fig. 4, the beam body skeleton of the wind guide wall girder 22 is welded with high heat-resistant steel, and is an upper arch and lower flat structure. Support with many heat-resistant steel columns 21 between 12. The length of the beam frame is slightly longer than the inner diameter of the shaft furnace body, and its two ends are built into the walls 1 on both sides of the furnace body respectively. 14 in Fig. 2 is the part where the beam is stuck into the wall. On the beam body of the wind-guiding wall girder 22, build a plurality of girder ventilation holes 15 with refractory bricks, the width of the beam body of the wind-guiding wall girder 22 and the aperture of the girder ventilation hole 15 are designed and manufactured according to the drawing, and its longitudinal direction starts from the design ratio Arch, its arching ratio is raised or lowered on this basis according to user requirements, and the pre-fabricated girder ventilation hole inner bushing 10 or plate is placed in the girder ventilation hole 15, and the material of the girder ventilation hole inner bushing 10 or plate is It is best to use heat-resistant metal or silicon carbide and other hard wear-resistant materials that are refractory or not within the scope of refractory materials. On the outer surface of the inner liner 10 of the girder ventilation hole or the plate, brush the anti-sticking layer. The method of making the wind-guiding wall girder 22 is: use a steel formwork to stick to the girder body skeleton of the wind-guiding wall girder 22, and then insert it into the beam body. Pouring the explosion-proof castable to form it, forming the girder pouring layer 11 on its surface, forming the girder side pouring layer 11 on the side of the wind guiding wall girder 22, drying the wind guiding wall girder 22 with a conventional method and then firing at high temperature Or bake at low temperature (below 800°C) to make finished girders. Also can make the ventilation hole below the crossbeam 22 girder body of wind-guiding wall into figure-of-eight, and its wind-in effect is better.

The preparation method of the castable used in the present invention is: mix the high-alumina clinker with less impurities and good thermal shock stability with the crushed particles of high-alumina waste electric porcelain rods to form a mixture, and add heat-resistant steel fibers and Phosphate or other high-temperature and high-strength binders are used to make explosion-proof castables. The firing range of explosion-proof castables made of phosphate or other high-temperature and high-strength binders is very wide, so the firing temperature of the wind guide wall girder 22 depends on the castable Depends on the material used.

See Fig. 4, on wind-guiding wall girder 22, build multilayer wind-guiding wall 6 with vertical wedge refractory bricks, in order to increase the height of wind-guiding wall girder 22 beam body two ends also can be not higher than wind-guiding wall girder as shown in Fig. 4 22 On the basis of the total height of the beam body, the corner brick 16 and part of the wall of the first layer of wind guide wall are poured with pouring material simultaneously.

The refractory bricks used on both sides of the air guide wall 6 and the wall are high-alumina refractory bricks. This kind of high-alumina refractory bricks is made of waste high-alumina porcelain clay and high-quality clay as fine powder, and high-alumina bricks with good thermal shock stability are used. The particles below 3 mm crushed from bauxite or waste high-alumina porcelain rods and bottles are aggregates, and the vertical wedge-shaped refractory bricks are made by mixing the combined fine powder and aggregates and adding high-strength binders according to the arching ratio of the beam body (during production. Reserving the perforation of heat-resistant metal pull rods) and arched corner bricks in some bricks, the structure of vertical wedge refractory bricks is shown in Figure 7, its facade 28 is a vertical wedge structure, and side 24 is a rectangular structure. The structure of the corner brick is shown in Figure 6, and its facade 16 and side 19 are triangular structures. The vertical wedge refractory brick can also be made into a vertical wedge shape with a brick tongue and a brick groove on the brick masonry surface according to the design requirements. Use high-alumina refractory bricks to build the same arch shape as the beam body on both sides of the wind-guiding wall beam 22 . As shown in Figure 1 and Figure 4, multiple ventilation holes of the ventilation wall are built with refractory bricks on the body of the ventilation wall. The air guide wall ventilation hole inner bushing 5 is installed in the air guide wall ventilation hole, and each wind guide wall ventilation hole is connected and vertical to the corresponding girder ventilation hole 15, stacked up and down in layers to form a nine-hole chimney shape, The outer surface of the inner liner of the ventilation hole located in the lower section of the wind-guiding wall 6 is brushed with an anti-sticking layer, and a metal screw with heat-resistant screws at both ends is placed between the two ventilation holes of the wind-guiding wall of each layer of wall. Tie bar 7, body of wall both sides penetrates the heat-resistant metal splint 9 that hole diameter is identical with metal pull bar specification respectively, and heat-resistant metal splint 9 is fastened and welded firmly with screw and metal pull rod 7. Casting material 18 for two ventilation holes is poured between the ventilation holes of the two ventilation walls to make it integrated with the body of the ventilation wall 6 . The arch difference part on the top of the air guide wall 6 is leveled with flat bricks 23 and phosphate mud on the air guide wall, and the air guide wall girder, the air guide wall ventilation hole and the upper air outlet 3 of the inner liner are left, and then covered with The wind-guiding wall cover brick 2 made of phosphate or other high-temperature and high-strength binders, as shown in Figure 1, castables are poured on the wind-guiding wall cover brick 2, and it is poured into a triangular shape. The distance between the tops of the joists 4 is appropriately reduced, forcing the air volume to gradually weaken from bottom to top under the dual resistance of the triangular girders and purlins, ensuring sufficient air volume for thick pellets in the lower part of the drying bed. The upper material layer is thinner, and the pellets have more moisture, and the excessive collapse of the pellets is avoided due to the weakened air volume and lowered temperature. Therefore, the temperature here is relatively low, and the castable used on the cover brick 2 of the air guide wall is small particles after daily waste porcelain, construction waste porcelain, waste ceramic saggers, and waste refractory bricks are pulverized, and then aluminate cement or water is added. Made of glass bond mix.

After the wind-guiding wall 6 is built by laying bricks or stones, use the wind-guiding wall brick castable 17 to form a pouring layer above the beam end 20 of the girder. The air guiding wall 6 is divided into three sections according to its length, and the two sides of each section of the air guiding wall 6 use two fired drying bed beams respectively, and one end tightly presses the air guiding wall cover plate brick 2, and its center line is Triangular welding, the other end of which is inserted into the walls on both sides of the furnace body according to the reasonable slope of the drying bed.

In order to increase the output and expand the inner volume of the furnace, the furnace body can be appropriately extended, and the air guide wall 6 and the air guide wall beam 22 are also changed accordingly. In order to increase the load-bearing capacity and stability of the air guide wall 6 and the air guide wall beam 22, On both sides of the air guide wall 6 and the girder beam body 22, several triangular support columns 8 with the same material and manufacturing method as the supporting beam purlin of the drying bed are supported. One end of the triangular support column 8 supports the air guide wall body, and the other end is a human body. The glyph bevel is built in the body of wall 1 on both sides of the furnace body by masonry, but its sharp corner must be upward, so as to avoid the phenomenon of material resistance. The support column 8 is fastened and connected with the wind guide wall 6 and the wind guide wall girder 22 as a whole with bolts respectively.

As shown in Figure 5, the drying bed located at the top of the wind guide wall is supported by the support beam 4 of the beam-purlin structure of the ridge house, and the support beam 4 is welded with heat-resistant metal steel. It is a triangle with a bottom width of 25 cm and a height of 50 cm. Beam frame, with several triangular purlin frames 25 of lower bottom 15 centimeters, high 30 centimeters, formwork support respectively. The girders and purlins of the drying bed are made by pouring and forming the explosion-proof castable, and 26 among the figures is the green pellet blanking area.

Put the drying bed purlin two ends into the middle of the triangular beam frame of supporting beam 4, and exceed 5 centimeters of the triangular beam frame, and the distance between the purlin and the purlin is determined by the length of the drying bed grate 27. The bed grate 27 is placed between the two purlin triangles, and its upper level height is equal to the purlin tip and paved tightly.

The binding agent described in the present invention is phosphate, phosphoric acid or resin binding agent. The anti-stick layer is an asphalt layer.

Working principle of the present invention:

The ventilation hole bushing and the wind guide wall built with vertical wedge-shaped refractory bricks are two parts of the compartment, each of which bears its own working temperature. Therefore, no large temperature difference and fracture will occur on the same brick body, and the support and fastening of the air guide wall with triangular support columns and heat-resistant metal tie rods strengthen the firmness and stability of the air guide wall.

The air guide wall girder 22 of the present invention is because the upper air guide wall 6 is built with vertical wedge-shaped refractory brick arch, so the pressure on the air guide wall is not too large, but its lower plane is the upper plane of the cooked ball cooling zone , the cooling air enters the ventilation holes from here, so the lower plane of the beam body and the ventilation holes of the beam body are also subjected to the greatest frictional force of the large particles of ball slag and powder scoured by the high-pressure wind. The heat-resistant metal skeleton of the girder of the wind guide wall is set on the surface of the girder body, which not only enhances the load-bearing pressure of the girder, but also protects the lower plane of the girder body and the ventilation holes due to its wear resistance at high temperatures. When it is severely worn, it is convenient to repair it by welding, so that the beam body and the wind guide wall can be used for a long time.

The drying bed acts as a drying agent for the raw pellets, and its quality and quantity are related to the size and uniformity of the hot air flow emitted from the air guide wall. In order to better and uniformly utilize the heat energy under the drying bed, the water circulation system designed in the present invention is eliminated. The triangular girder-purlin roof truss structure with refractory materials is used, and its working principle is as follows:

The triangular purlin is used to tightly press the pouring layer on the cover plate of the air guide wall, so that the airflow between the two beams can be confined to this part and cannot move with each other. The pressure of the hot air flow ejected from the air guide wall is upward, and the air flow Flow from the bottom to the top of the drying bed. The grate of the drying bed is stuck between the two triangular purlins, and the flow space becomes smaller as it goes up, forcing the airflow to be intercepted by the triangular purlins under the drying bed and discharged here in large quantities. By analogy, the triangular purlins of several drying beds are intercepted and distributed for many times and form an upward cross-blue movement, and the pressure and flow are gradually weakened, which meets the requirement of thick lower fabric layer, less water, heat and pressure. The benign working principle is that the top material layer is thin, the moisture is large, and the heat pressure requirement is small.

The above disclosures are only specific embodiments of the present invention, but the present invention is not limited thereto, and any changes conceivable by those skilled in the art shall fall within the protection scope of the present invention.

Claims (3)

1. An air guide wall and a drying bed of a smelting pellet shaft furnace, the air guide wall is supported by an air guide wall girder, the drying bed is located above the air guide wall and supported by a support, and is located in the shaft furnace body. is that a. The beam body of the wind guide wall beam is an upper arch and a lower flat structure, and its length is greater than the inner diameter of the furnace. The beam body is supported by a plurality of metal columns. The beam body is provided with a beam ventilation hole, and the beam ventilation hole The inner bushing of the girder ventilation hole is installed inside, and the outer surface of the inner bushing of the girder ventilation hole is coated with an anti-sticking layer. The girder of the wind guiding wall is formed by using a steel formwork close to the girder body, and then pouring explosion-proof into the girder body The castable is poured and formed, and the finished product after drying and high temperature treatment; b. The wall body of the air guide wall is built with vertical wedge-shaped refractory bricks, and a plurality of air guide wall ventilation holes are arranged on it. The ventilation holes of the wind wall are poured with castables. Each ventilation hole of the wind-guiding wall is connected to and perpendicular to the corresponding beam ventilation hole. It is stacked up and down to form a chimney, and is located in the ventilation hole of the lower section of the wind-guiding wall. The outer surface of the bushing is brushed with an anti-adhesive layer, and a metal tie rod is installed between the two air guide wall ventilation holes of each layer of the wall, and heat-resistant metal splints with the same hole diameter as the metal tie rod are arranged on both sides of the wall. The heat-resistant metal splint is tightly connected with the metal tie rod, and the arch difference on the upper part of the wind guide wall is leveled and then covered with a cover brick, and a triangular castable top is poured on the cover brick; c. Both sides of the air guide wall and the beam of the air guide wall are respectively supported by supporting columns. The two ends of the beam of the air guide wall are respectively inserted into the walls on both sides of the furnace body; d. The drying bed is supported by a supporting beam, which is a triangular beam bracket with a bottom width of 23-28 cm and a height of 45-55 cm. 2. The air guide wall and drying bed of the smelting pellet shaft furnace according to claim 1, characterized in that the refractory bricks used in the air guide wall are made of waste high-alumina porcelain clay or mixed fine powder of clay and high-alumina material To make the combined fine powder, use high-alumina bauxite with good thermal shock stability or waste high-alumina porcelain rod bottle particles as the aggregate. The combined fine powder is mixed with the aggregate and then added with a binder to make a vertical beam according to the arching ratio of the beam body. Wedge refractory brick. 3. The air guide wall and drying bed of the smelting pellet shaft furnace according to claim 1, characterized in that the castable is made of high-alumina clinker or high-alumina waste electric porcelain rod particles or a mixture of both. A mixture of binders.

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