CN216614735U

CN216614735U - Converter capable of improving lime calcium oxide and reducing raw burning

Info

Publication number: CN216614735U
Application number: CN202123397129.5U
Authority: CN
Inventors: 甄继勇; 刘强; 孟洁; 尹健; 黄玉辉; 魏领恩
Original assignee: Shandong Iron and Steel Group Yongfeng Lingang Co Ltd
Current assignee: Shandong Iron and Steel Group Yongfeng Lingang Co Ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-05-27
Anticipated expiration: 2031-12-31

Abstract

The utility model discloses a converter for improving lime calcium oxide and reducing raw burning, which comprises a steelmaking converter, wherein the middle part of the top end of the steelmaking converter is fixedly communicated with a step-folded smoke exhaust chimney, one side of the top end of the steelmaking converter is fixedly communicated with a storage hopper, and both sides of the storage hopper are provided with blocking chutes respectively. Is safer and more reliable.

Description

Converter capable of improving lime calcium oxide and reducing raw burning

Technical Field

The utility model relates to the technical field of smelting of a steel converter, in particular to a converter capable of improving lime calcium oxide and reducing raw burning.

Background

In the smelting process of the converter, lime is quickly dissolved after entering the converter, the slagging speed is high, high-alkalinity slag is formed earlier, and sulfur and phosphorus in pig iron are formed into slag to be removed. Low lime quality increases lime consumption, resulting in increased slag. The lime activity degree is generally between 350-360ml, the dosage of the converter is generally between 40-45 kg/ton steel, and the improvement of the calcium oxide content and the activity degree is beneficial to reducing the slag amount and improving the slag forming speed.

Most of the existing steelmaking furnace raw materials are added at one time, the sintering efficiency is low, the quality is poor, the energy waste is easily caused, the combustion-supporting air quantity can not be flexibly adjusted according to the capacity of the raw materials in the furnace, and the raw burning phenomenon is easily caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a converter for improving lime calcium oxide and reducing raw burning, which aims to solve the problems that most of the existing steelmaking furnace raw materials proposed in the background art are added at one time, the sintering efficiency is low, the quality is poor, the energy waste is easily caused, the combustion-supporting air quantity cannot be flexibly adjusted according to the capacity of the raw materials in the converter, and the raw burning phenomenon is easily caused.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides an improve lime calcium oxide, reduce converter of unburnt earthenware, includes steelmaking converter, the fixed intercommunication in middle part on steelmaking converter top has the ladder to roll over the form chimney of discharging fume, the fixed intercommunication in one side on steelmaking converter top has the storage hopper, the shutoff spout has all been seted up to the both sides of storage hopper, two one side of shutoff spout all is fixed and is provided with accuse material subassembly, steelmaking converter periphery is fixed and is provided with annular combustion-supporting pipe, the inboard fixed mounting of annular combustion-supporting pipe has a plurality of combustion-supporting nozzles that are located steelmaking converter inside, one side fixed mounting of steelmaking converter has the controller, and this steelmaking converter can carry out the continuity material loading automatically, and the proportion of going into the stove of raw materials is controlled according to the change of material level, and then makes output and required raw materials weight match, and incessant material loading can effectively control flue gas temperature, improves the waste heat capacity.

Preferably, two the accuse material subassembly all includes accuse material slide and drive box, the fixed drive box that is provided with in top of accuse material slide, the inside fixed mounting of drive box has driving motor, driving motor's output fixed mounting has drive gear, the fixed spacing slide rail that is provided with in bottom of accuse material slide inner wall, the top sliding connection of spacing slide rail has the transmission rack bar, the fixed shutoff baffle that is located the inside shutoff spout that is provided with of one end of transmission rack bar, two driving motor all with controller electric connection, easy operation is convenient, reliable and stable.

Preferably, the bottom ends of the two driving gears are respectively meshed with the top ends of the two transmission toothed bars, and the two blocking baffles are correspondingly arranged, so that the feeding work can be automatically realized.

Preferably, a slag discharge slideway is fixedly arranged on one side of the bottom of the steel-making converter, so that slag is convenient to clean, and convenience is brought to maintenance of the converter.

Preferably, one side of the annular combustion-supporting pipe is fixedly communicated with a communicating pipe, the middle part of the communicating pipe is fixedly provided with an electromagnetic flow control valve, the electromagnetic flow control valve is electrically connected with the controller, the air volume of the combustion-supporting air can be timely adjusted according to the change of the heat value of the fuel, the fuel can be effectively completely combusted, and heat is released.

Preferably, the front surface of the steelmaking converter is fixedly provided with a capacitance type material level sensor, the capacitance type material level sensor is electrically connected with the controller, the proportion of the raw materials entering the converter is controlled according to the change of the material level, the output is matched with the weight of the required raw materials, the smoke temperature can be effectively controlled through uninterrupted feeding, and the waste heat capacity is improved.

Compared with the prior art, the utility model has the beneficial effects that:

1. the steelmaking converter can automatically carry out continuous feeding, the proportion of the raw materials entering the converter is controlled according to the change of the material level, the yield is matched with the weight of the required raw materials, the flue gas temperature can be effectively controlled by uninterrupted feeding, and the utilization of waste heat is improved;

2. the air quantity of combustion-supporting air can be adjusted in time according to the change of the heat value of the fuel, the fuel can be effectively and completely combusted, the heat is released, the phenomenon that the temperature of a channel is increased due to the fact that the flame of a spray gun is prolonged because the combustion-supporting air is insufficient is avoided, the stable kiln pressure can be reduced due to reasonable combustion-supporting and cold air coefficients, the kiln pressure cannot be too high, and the combustion-supporting and cold air cooling device is safer and more reliable;

3. the design of the step-shaped folding exhaust chimney can reduce the heat loss in the furnace, and is more energy-saving and environment-friendly.

Drawings

FIG. 1 is a front cross-sectional view of a converter according to the present invention;

FIG. 2 is a cross-sectional view of a material control assembly of the present invention;

FIG. 3 is a schematic structural view of a plugging baffle of the present invention;

fig. 4 is an enlarged view of part a of the present invention.

In the figure: 1. a steel converter; 2. a ladder-shaped folded smoke exhaust chimney; 3. a material control component; 31. a material control sliding seat; 32. a limiting slide rail; 33. a drive rack; 34. a drive box; 35. a drive gear; 36. a drive motor; 37. blocking the baffle; 4. a storage hopper; 5. an annular combustion supporting tube; 6. a capacitive level sensor; 7. a combustion-supporting nozzle; 8. a slag discharge slideway; 9. a controller; 10. a communicating pipe; 11. an electromagnetic flow control valve; 12. and (6) blocking the sliding groove.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Referring to fig. 1-4, the utility model provides a converter for increasing lime calcium oxide and reducing raw burning, which comprises a steelmaking converter 1, wherein a stepped folded exhaust chimney 2 is fixedly communicated with the middle part of the top end of the steelmaking converter 1, a storage hopper 4 is fixedly communicated with one side of the top end of the steelmaking converter 1, plugging chutes 12 are respectively arranged on both sides of the storage hopper 4, a material control assembly 3 is fixedly arranged on one side of each of the two plugging chutes 12, an annular combustion-supporting pipe 5 is fixedly arranged on the periphery of the steelmaking converter 1, a plurality of combustion-supporting nozzles 7 positioned in the steelmaking converter 1 are fixedly arranged on the inner side of the annular combustion-supporting pipe 5, and a controller 9 is fixedly arranged on one side of the steelmaking converter 1, so that the steelmaking converter 1 is optimized, the temperature of a furnace body channel is increased, the calcium oxide content is increased, and raw burning is avoided.

The two material control assemblies 3 respectively comprise a material control slide seat 31 and a drive box 34, the top end of the material control slide seat 31 is fixedly provided with the drive box 34, the inside of the drive box 34 is fixedly provided with a drive motor 36, the output end of the drive motor 36 is fixedly provided with a drive gear 35, the bottom of the inner wall of the material control slide seat 31 is fixedly provided with a limit slide rail 32, the top end of the limit slide rail 32 is connected with a transmission gear rod 33 in a sliding manner, one end of the transmission gear rod 33 is fixedly provided with a blocking baffle 37 positioned inside the blocking chute 12, the two drive motors 36 are both electrically connected with a controller 9, the bottom ends of the two drive gears 35 are respectively connected with the top ends of the two transmission gear rods 33 in a meshing manner, the two blocking baffles 37 are correspondingly arranged, one side of the bottom of the steelmaking converter 1 is fixedly provided with a slag discharge slide way 8, the steelmaking converter 1 can automatically carry out continuous feeding, and the proportion of raw materials entering the converter is controlled according to the change of material level, and then make output and required raw materials weight match, incessant material loading can effectively control flue gas temperature, improves the waste heat ability.

Communicating pipe 10 is fixed to one side of combustion-supporting pipe 5, the middle part fixed mounting of communicating pipe 10 has electromagnetic flow control valve 11, electromagnetic flow control valve 11 and controller 9 electric connection, steelmaking converter 1's front fixed mounting has capacitanc level sensor 6, capacitanc level sensor 6 and controller 9 electric connection, can in time adjust the amount of wind of combustion-supporting wind according to the change of fuel heat value, can effectually make the fuel burn completely, the release heat, avoid combustion-supporting wind to lead to the fact the phenomenon that spray gun flame extension makes the passageway temperature rise inadequately, reasonable combustion-supporting and cold wind coefficient can reduce and stabilize the kiln pressure, can not cause the kiln pressure too high, and is safe and reliable more.

When the embodiment of the application is used: after the steelmaking converter 1 is stably installed, a power supply is switched on, the limestone before entering the converter is completely screened to ensure cleanliness, the screened limestone is added into the storage hopper 4, the capacitive material level sensor 6 can constantly monitor the material level in the steelmaking converter 1, the driving motor 36 can work under the control of the controller 9, the driving gear 35 drives the transmission rack bar 33 to move and further drives the two blocking baffles 37 to open, so that the raw material blanking is controlled, the steelmaking converter 1 can automatically carry out continuous feeding, the proportion of the raw material entering the converter is controlled according to the change of the material level, the yield is matched with the required raw material weight, the uninterrupted feeding can effectively control the smoke temperature and improve the waste heat capacity, the furnace smoke generated in the steelmaking process can be discharged from a smoke discharge chimney, the design of the stepped folding smoke discharge chimney 2 can reduce the heat loss in the converter, is more energy-saving and environment-friendly, and the air quantity of combustion-supporting air can be timely adjusted according to the change of the heat value of the fuel, can effectually make the fuel burn completely, release the heat, avoid combustion-supporting wind to lead to the fact spray gun flame extension to make the phenomenon that the passageway temperature rose inadequately, reasonable combustion-supporting and cold wind coefficient can reduce and stabilize the kiln pressure, can not cause the kiln pressure too high, safe and reliable more.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the utility model can be made, and equivalents and modifications of some features of the utility model can be made without departing from the spirit and scope of the utility model.

Claims

1. A converter for improving lime calcium oxide and reducing raw burning comprises a steel converter (1), and is characterized in that: the middle part on steelmaking converter (1) top is fixed the intercommunication has ladder fold form chimney (2) of discharging fume, the fixed intercommunication in one side on steelmaking converter (1) top has storage hopper (4), shutoff spout (12) have all been seted up to the both sides of storage hopper (4), two one side of shutoff spout (12) is all fixed and is provided with accuse material subassembly (3), steelmaking converter (1) periphery is fixed and is provided with annular combustion-supporting pipe (5), the inboard fixed mounting of annular combustion-supporting pipe (5) has a plurality of combustion-supporting nozzles (7) that are located steelmaking converter (1) inside, one side fixed mounting of steelmaking converter (1) has controller (9).

2. The converter for increasing lime calcium oxide and reducing raw burning according to claim 1, wherein: two subassembly (3) are all expected including accuse material slide (31) and drive case (34) to the accuse, the fixed drive case (34) that is provided with in top of accuse material slide (31), the inside fixed mounting of drive case (34) has driving motor (36), the output fixed mounting of driving motor (36) has drive gear (35), the fixed spacing slide rail (32) that is provided with in bottom of accuse material slide (31) inner wall, the top sliding connection of spacing slide rail (32) has transmission rack bar (33), the fixed shutoff baffle (37) that are located inside shutoff spout (12) that are provided with of one end of transmission rack bar (33), two driving motor (36) all with controller (9) electric connection.

3. The converter for increasing lime calcium oxide and reducing raw burning according to claim 2, wherein: the bottom of two drive gear (35) is connected with the top meshing of two transmission ratchets (33) respectively, two shutoff baffle (37) correspond the setting.

4. The converter for increasing lime calcium oxide and reducing raw burning according to claim 1, wherein: one side of the bottom of the steel-making converter (1) is fixedly provided with a slag discharge slideway (8).

5. The converter for increasing lime calcium oxide and reducing raw burning according to claim 1, wherein: one side of the annular combustion-supporting pipe (5) is fixedly communicated with a communicating pipe (10), the middle of the communicating pipe (10) is fixedly provided with an electromagnetic flow control valve (11), and the electromagnetic flow control valve (11) is electrically connected with a controller (9).

6. The converter for increasing lime calcium oxide and reducing raw burning according to claim 1, wherein: the front of the steelmaking converter (1) is fixedly provided with a capacitance type material level sensor (6), and the capacitance type material level sensor (6) is electrically connected with a controller (9).