CN204569953U - A kind of blast furnace slag iron runner cover plate of resistance to material high thermal efficiency roaster - Google Patents

Abstract

The utility model relates to a high-thermal-efficiency roaster for a blast furnace slag iron trench refractory cover plate. The roaster includes an iron trench baking assembly and a slag trench baking assembly. The iron trench baking assembly includes an iron trench body and Iron ditch accessories, the iron ditch accessories include main iron ditch parts and iron ditch parts, the slag ditch baking assembly includes slag ditch body and slag ditch accessories, the iron ditch baking assembly and slag ditch baking assembly Connections are made through channel components. In this technical scheme, the slag-iron ditch roaster is placed on the slag-iron ditch that needs to be baked, the air and gas of the slag-iron ditch baker are connected, the ignition gun is ignited, the ignition gun is inserted into the ignition hole of the burner, and the slag-iron ditch is opened slightly. The air valve of the roaster and the gas of the slag iron ditch roaster are installed on the side of the cover plate to adjust the ratio of gas and air according to the temperature of the flue gas, and the temperature of the flue gas is controlled to bake along the specified refractory material. The temperature is raised according to the curve to achieve the purpose of controlling the baking temperature; the cost of the whole technical solution is low, and it is convenient for large-scale promotion and use.

Description

A high thermal efficiency baker for blast furnace slag iron ditch refractory cover plate

technical field

The utility model relates to a roaster, in particular to a roaster with high thermal efficiency for a blast furnace slag iron ditch refractory cover plate, which belongs to the technical field of blast furnace front slag iron cover plate equipment.

Background technique

The blast furnace is an important place for iron and steel smelting. At present, the blast furnaces of most metallurgical enterprises do not have protective cover plates in the iron ditch and slag ditch. Due to the large waste gas pollution in the iron ditch and slag ditch of the blast furnace, it will cause great damage to the operator's body and pollute the environment. At the same time, because the upper part of the molten iron is exposed to the air, the temperature drops quickly and the temperature loss is large, which increases energy consumption. The slag-iron ditch in front of the existing blast furnace is baked by opening several small holes on the upper, lower and both sides of the steel pipe, putting the steel pipe type baker into the slag-iron ditch, passing coke oven gas or other combustible gases into the steel pipe to ignite , bake from the bottom up, and cover the upper part of the ditch with an iron plate when the temperature needs to be raised. The roaster features simple processing, but the roasting is not uniform enough. The flame directly contacts the refractory material during baking, which may easily cause the refractory material to burst during baking. The roaster and the covering steel plate are oxidized at high temperature, and the consumption is relatively large. The temperature curve is difficult to control, the thermal insulation performance is poor, the fuel consumption is large, and the fuel utilization rate is extremely low. Therefore, there is an urgent need for a new solution to solve the above technical problems.

Utility model content

The utility model aims at the technical problems existing in the prior art, and provides a high thermal efficiency oven for the refractory cover plate of the slag-iron ditch. The technical proposal installs a short flame or no The flame roaster is used for semi-closed heat storage and baking of the slag-iron ditch. The heat passes through the inner space of the slag-iron ditch under the slag-iron ditch cover plate, and makes full use of heat convection and heat radiation for heat transmission to bake the slag-iron ditch. wall and bottom.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows, a high thermal efficiency roaster for the cover plate of blast furnace slag iron ditch refractory material, characterized in that the baker includes an iron ditch baking assembly and a slag ditch baker Assemblies, the iron trough baking assembly includes the iron trough body and the iron trough accessories, the iron trough accessories include the main iron trough parts and the iron trough parts, the slag trough baking assembly includes the slag trough body and the slag trough accessories, the The iron ditch baking assembly and the slag ditch baking assembly are connected through a channel assembly.

As an improvement of the utility model, the main iron channel components include a baking chimney, a main iron channel temperature measuring couple, a main iron channel cover plate, a main iron channel inner chamber, and a main iron channel baking burner. The iron ditch cover plate is arranged above the main iron ditch inner room, the baking chimney is arranged on one side of the main iron ditch inner room, the main iron ditch thermocouple is arranged under the said baking chimney, the main iron ditch The iron trough baking burner is set on the other side of the main iron trough inner chamber.

As an improvement of the utility model, the iron trough components include an iron trough temperature measuring couple, an iron trough inner chamber, an iron trough cover plate, and an iron trough baking burner, and an iron trough is arranged above the iron trough inner chamber As for the cover plate, one side of the inner chamber of the iron ditch is provided with an iron ditch temperature measuring couple, and the other side is provided with an iron ditch baking burner.

As an improvement of the utility model, a slag port, a skimmer girder and an ignition observation hole are set between the main iron ditch inner chamber and the iron ditch inner chamber, and the ignition observation hole is set as the main iron ditch for baking and burning. under the mouth.

As an improvement of the utility model, the slag ditch accessories include a slag ditch thermocouple, a slag ditch cover, a slag ditch inner chamber, a slag ditch baking burner, and a slag ditch inner A slag ditch cover plate is set above the slag ditch inner chamber, a slag ditch temperature measuring couple is set on one side of the slag ditch inner chamber, and a slag ditch baking burner is set on the other side of the slag ditch inner chamber .

As an improvement of the present utility model, the channel assembly includes a first ring gas channel, a second ring air channel, a third ring gas channel, gas and air mixing holes from the inside to the outside, and the channels are arranged between Channel divider.

As an improvement of the utility model, the inner surface of the main iron trench cover plate is provided with an infrared radiation paint layer. Apply a layer of nano-ceramic high-reflectivity radiation material on the inner surface of the cover plate of the roaster to improve the radiation efficiency and the overall thermal efficiency of the roaster.

Compared with the prior art, the advantages of this utility model are as follows: 1) The overall structural design of the technical solution is ingenious, easy to operate, safe and reliable, and easy to disassemble 2) The burner of the roaster described in the technical solution can be divided into Single-head, double-head and multi-head burners, one end of the gas and air pipeline is connected to the burner of the roaster, and the other end is led out of the slag-iron ditch cover as a gas and air inlet. Valves are installed before the gas and air inlets. There is an ignition hole next to the burner of the roaster. Its function is to ignite and to observe the flame; Air and gas of the roaster, ignite the ignition gun, insert the ignition gun into the ignition hole of the burner, open the air valve of the slag-iron ditch roaster slightly, and then open the gas of the slag-iron ditch roaster, install the tester on the side of the cover plate Thermocouple, adjust the ratio of gas and air according to the flue gas temperature, control the flue gas temperature to rise along the established refractory baking curve, and achieve the purpose of controlling the baking temperature; 4) The cost of the entire technical solution is low, which is convenient for large-scale promotion use.

Description of drawings

Figure 1 Schematic diagram of the structure of the high thermal efficiency baker for the refractory cover plate of the blast furnace slag iron ditch;

Fig. 2 Schematic diagram of burner structure of blast furnace slag iron ditch refractory cover plate high thermal efficiency baker;

Fig. 3 is the C-C view of Fig. 2;

In the figure: 1-baking chimney, 2-main iron trench thermocouple, 3-main iron trench cover, 4-main iron trench inner chamber, 5-infrared radiation coating layer, 6-ignition observation hole, 7- Main iron trough baking burner, 8-slag mouth, 9-scum skimmer beam, 10-iron trough thermocouple, 12-iron trough inner chamber, 13-iron trough cover, 14-iron trough baking Nozzle, 15-slag ditch thermocouple, 16-slag ditch cover, 17-slag ditch inner chamber, 18-slag ditch body, 19-slag ditch baking burner, 20-iron ditch body, 21-first Ring gas channel, 22-second ring air channel, 23-third ring gas channel, 24-gas and air mixing hole, 25-passage partition.

Detailed ways

In order to deepen the understanding and recognition of the utility model, the utility model will be further described and introduced below in conjunction with the accompanying drawings.

Embodiment 1 : referring to Fig. 1, a kind of blast furnace slag iron channel refractory cover plate high thermal efficiency roaster, described roaster comprises iron trench baking assembly and slag trench baking assembly, and described iron trench baking assembly comprises Iron channel body and iron channel accessories, the iron channel accessories include the main iron channel parts and iron channel parts, the slag channel baking assembly includes the slag channel body 18 and the slag channel accessories, the iron channel baking assembly and the slag channel The baking components are connected through channel components; the main iron channel components include a baking chimney 1, a main iron channel temperature measuring couple 2, a main iron channel cover plate 3, a main iron channel inner chamber 4, a main iron channel oven Roasting burner 7, wherein the main iron ditch cover plate 3 is arranged above the main iron ditch inner chamber, the said baking chimney 1 is arranged on one side of the main iron ditch inner chamber 4, and the main The iron ditch temperature measuring couple 2, the main iron ditch baking burner 7 is set on the other side of the main iron ditch inner chamber 4, and the iron ditch components include the iron ditch temperature measuring couple 10, the iron ditch inner chamber 12 , iron ditch cover plate 13, iron ditch baking burner 14, an iron ditch cover plate 13 is arranged on the top of the iron ditch inner chamber 12, an iron ditch thermocouple 10 is arranged on one side of the iron ditch inner chamber 12, and an iron ditch thermocouple 10 is arranged on the other One side is provided with iron ditch baking burner 14.

Embodiment 2 : Referring to Fig. 1, as an improvement of the present utility model, a slag mouth 8, a skimmer girder 9 and an ignition observation hole 6 are arranged between the main iron ditch inner chamber 4 and the iron ditch inner chamber 12, The ignition observation hole is arranged below the main iron trough baking burner 7 . The rest of the structures and advantages are exactly the same as in Embodiment 1.

Embodiment 3 : referring to Fig. 1, as a kind of improvement of the present utility model, described slag ditch accessory comprises slag ditch thermocouple 15, slag ditch cover plate 16, slag ditch inner chamber 17, slag ditch baking burner 19 A slag ditch inner chamber 17 is arranged inside the slag ditch body 18, a slag ditch cover plate 16 is arranged above the slag ditch inner chamber 17, and a slag ditch temperature measuring couple is arranged on one side of the slag ditch inner chamber, so The other side of the slag ditch inner chamber is provided with a slag ditch baking burner 19 . The rest of the structures and advantages are exactly the same as in Embodiment 1.

Embodiment 4 : Referring to Fig. 2, as a kind of improvement of the present utility model, described channel assembly comprises first ring gas channel 21, second ring air channel 22, third ring gas channel 23, gas and Air mixing holes 24, and channel partitions 25 are arranged between the above-mentioned channels. The rest of the structures and advantages are exactly the same as in Embodiment 1.

Embodiment 5 : Referring to Fig. 1 and Fig. 2, as an improvement of the present utility model, an infrared radiation paint layer 5 is provided on the inner surface of the main iron trench cover plate 3. Apply a layer of nano-ceramic high-reflectivity radiation material on the inner surface of the cover plate of the roaster to improve the radiation efficiency and the overall thermal efficiency of the roaster. The rest of the structures and advantages are exactly the same as in Embodiment 1.

It works as follows:

Referring to Fig. 1 and Fig. 2, after pouring of iron ditch body 20 and slag ditch body 18, cover main iron ditch cover plate 3, iron ditch cover plate 13, slag ditch cover plate 16 and baking chimney 1 respectively, install iron ditch oven Roasting burner 14, slag ditch baking burner 19, main iron ditch temperature measuring couple 2, iron ditch temperature measuring couple 11, slag ditch temperature measuring couple 15, light the ignition gun, and insert the ignition gun into the ignition observation hole 6 , open the air first, turn it small, and then pass the gas, respectively ignite the main iron channel baking burner 7, iron channel baking burner 14, and slag channel baking burner 19, adjust the air and gas ratio of each burner, and observe The flame of the ignition observation hole 6 is preferably blue, and the high-temperature flue gas passes through the slag port 8, the skimmer girder 9, the main iron ditch inner chamber 4, the iron ditch inner chamber 12 and the slag ditch inner chamber 17 respectively, and the heat of the flue gas passes through the main The infrared radiation paint layer 5 on the iron ditch cover plate 3, the iron ditch cover plate 13, and the slag ditch cover plate 16 is reflected to the inner wall of the ditch. After the heat energy is efficiently utilized, the final flue gas is discharged from the chimney. Couple 2, the temperature value of the iron ditch thermocouple 11 and the slag ditch thermocouple 15, according to the refractory properties of each part, adjust the gas flow and air flow according to the refractory baking temperature curve. The gas in the ring gas channel 21 and the air in the second ring air channel 22 are mixed and burned, and the temperature is raised slowly. When the gas in the first ring gas channel 21 is used up, the gas in the third ring gas channel 23 is opened to heat up, and the second ring gas channel is controlled. The gas in the first ring gas channel 21, the gas in the third ring gas channel 23 and the air in the second ring air channel 22 are combusted through the gas and air mixing holes 24, and the channels of the burner are fixed by channel partitions 25. The technical proposal uses a short-flame or flameless burner for the slag-iron ditch, and the burner outlet of the burner generates a high-temperature airflow to bake the slag-iron ditch, and the flame does not touch the refractory material. Observe the color of the burning flame through the ignition hole to judge the burning effect. Install thermocouples in the middle and end of the main iron ditch to monitor the baking temperature curve to adjust the flow of gas and air to ensure the full combustion of gas and the quality of baking. Cover the slag-iron ditch or skimmer with a slag-iron ditch roaster. The baker is tightly covered along the direction of the iron mouth, and there is a flue gas outlet near the iron mouth. The high-temperature flue gas generated by combustion enters one end of the slag-iron ditch to the The other end of the iron mouth comes out, and the high-temperature flue gas first heats the cover plate of the roaster, and the heat radiates to the surface of the ditch through the cover plate, and a layer of nano-ceramic high-reflectivity radiation material is applied on the inner surface of the cover plate of the roaster to improve Radiation efficiency, improve the overall thermal efficiency of the roaster.

The utility model can also combine at least one of the technical features described in embodiments 2, 3, 4, and 5 with embodiment 1 to form a new embodiment.

It should be noted that the above-mentioned embodiments are not used to limit the protection scope of the present utility model, and equivalent transformations or substitutions made on the basis of the above-mentioned technical solutions all fall within the protection scope of the claims of the present utility model.

Claims (7)

1. A high thermal efficiency roaster for blast furnace slag iron trench refractory cover plate, characterized in that, the roaster includes an iron trench baking assembly and a slag trench baking assembly, and the iron trench baking assembly includes an iron trench The main body and the iron channel accessories, the iron channel accessories include the main iron channel parts and the iron channel parts, the slag channel baking assembly includes the slag channel body and the slag channel accessories, the iron channel baking assembly and the slag channel baking assembly are connected through channel components. 2. A high thermal efficiency roaster for blast furnace slag iron trench refractory cover plate as claimed in claim 1, characterized in that: the main iron trench components include a baking chimney, a main iron trench thermocouple, a main iron trench Cover plate, main iron channel inner room, main iron channel baking burner, wherein the main iron channel cover plate is set above the main iron channel inner room, the baking chimney is set on one side of the main iron channel inner room, the The main iron trough thermocouple is arranged below the roasting chimney, and the main iron trough baking burner is arranged on the other side of the main iron trough inner chamber. 3. A blast furnace slag iron trench refractory cover plate high thermal efficiency baker as claimed in claim 2, characterized in that: the iron trench components include iron trench thermocouples, iron trench inner chamber, and iron trench cover plate 1. Iron ditch baking burner, an iron ditch cover plate is arranged above the iron ditch inner chamber, an iron ditch temperature measuring couple is arranged on one side of the iron ditch inner chamber, and an iron ditch baking burner is arranged on the other side. 4. A high thermal efficiency baker for blast furnace slag iron trench refractory cover plate as claimed in claim 3, characterized in that: a slag port and a skimmer are arranged between the main iron trench inner chamber and the iron trench inner chamber The girder and the ignition observation hole are set under the main iron ditch baking burner. 5. A blast furnace slag iron ditch refractory cover plate high thermal efficiency baker as claimed in claim 4, characterized in that: the slag ditch accessories include a slag ditch thermocouple, a slag ditch cover plate, and a slag ditch inner chamber , a slag ditch baking burner, a slag ditch inner chamber is arranged inside the slag ditch body, a slag ditch cover plate is arranged above the slag ditch inner chamber, and a slag ditch temperature measuring electric device is arranged on one side of the slag ditch inner chamber Even, the other side of the inner chamber of the slag ditch is provided with a slag ditch baking burner. 6. A blast furnace slag iron ditch refractory cover plate high thermal efficiency baker as claimed in claim 4 or 5, characterized in that, the channel assembly sequentially includes a first ring gas channel, a second ring air channel from the inside to the outside channel, the third ring gas channel, gas and air mixing holes, and channel partitions are arranged between the above-mentioned channels. 7. A blast furnace slag-iron trench refractory cover plate high thermal efficiency baker according to claim 1, 2 or 3, characterized in that an infrared radiation paint layer is provided on the inner surface of the main iron trench cover plate.