CN214655047U - Feeding system for blast furnace slag adding steel - Google Patents
Feeding system for blast furnace slag adding steel Download PDFInfo
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- CN214655047U CN214655047U CN202120479314.XU CN202120479314U CN214655047U CN 214655047 U CN214655047 U CN 214655047U CN 202120479314 U CN202120479314 U CN 202120479314U CN 214655047 U CN214655047 U CN 214655047U
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Abstract
The utility model provides a charging system of blast furnace with slag steel, the furnace charge of blast furnace includes ore and slag steel, and the charging system of blast furnace with slag steel includes forklift, hopper, F1 sealing-tape machine and ore sealing-tape machine, wherein, the aircraft nose of F1 sealing-tape machine is less than the tail of F1 sealing-tape machine, the hopper is located the top of the aircraft nose of F1 sealing-tape machine, the tail of F1 sealing-tape machine is located the top of the aircraft nose of ore sealing-tape machine, the tail of ore sealing-tape machine is located the top of the furnace roof of blast furnace. The charging system of the blast furnace slag adding steel can add the slag steel into the blast furnace, the process of adding the slag steel into the blast furnace is between a long process and a short process, the consumption of ton iron coke can be reduced, the consumption of ton iron sinter can be reduced, and the discharge of waste, waste water and waste gas generated by producing the sinter and the coke can be greatly reduced. The blast furnace slag adding steel is an innovation of the traditional furnace material structure.
Description
Technical Field
The utility model relates to the technical field of iron-making and smelting, in particular to a feeding system for blast furnace slag adding steel.
Background
The steel industry is divided into a long flow and a short flow, wherein the long flow is sintering → coking → blast furnace → converter (or electric furnace) → steel rolling, and the short flow is electric furnace → steel rolling. The long flow belongs to the type with high energy consumption and high pollution, and the short flow is superior to the long flow in the aspects of energy conservation and environment improvement.
The blast furnace has three main lines for reducing the cost of iron ore per ton, reducing the cost of iron fuel per ton and reducing the power cost of iron per ton.
The metal iron screened from the steel scrap, the steel slag or the blast furnace slag is called slag steel in general. The slag steel and the blast furnace slag are rich in metallic iron and can be recycled after screening. The slag steel belongs to renewable resources, and has obvious energy carrying and environmental protection effects. The multipurpose slag steel relieves the resource shortage and can effectively reduce the external dependence of the iron ore. The size of the slag-steel ratio determines the energy consumption and energy utilization of metallurgical enterprises, and the improvement of the slag-steel ratio is beneficial to protecting resources, saving energy and reducing environmental pollution.
The digestion slag steel can reduce the ore consumption in the furnace and the coke ratio, and is one of the methods for saving energy, reducing consumption and reducing cost. The ore contains gangue, the slag steel mainly contains simple substance iron and contains a small amount of iron oxide, and the fuel required for reducing the gangue is far higher than that of the slag steel, so that the fuel consumption can be reduced when the slag steel is charged into a furnace.
Therefore, a charging system for charging the slag steel of the blast furnace is needed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a charging system of blast furnace with sediment steel utilizes this blast furnace to add the charging system of sediment steel can add the blast furnace with sediment steel and ore together, carries out cyclic utilization to the resource, makes it become a recycling economy, reduces ton iron cost, improves blast furnace efficiency, improves ecological environment.
In order to achieve the above object, the present invention provides the following technical solutions:
a charging system of blast furnace slag-added steel comprises ore and slag steel, and comprises a forklift, a hopper, an F1 belt conveyor and an ore belt conveyor, wherein the head of the F1 belt conveyor is lower than the tail of the F1 belt conveyor, the hopper is positioned above the head of the F1 belt conveyor, the tail of the F1 belt conveyor is positioned above the head of the ore belt conveyor, and the tail of the ore belt conveyor is positioned above the top of the blast furnace; the forklift can load the slag steel into the hopper, the slag steel falls from the hopper onto the F1 belt conveyor, the F1 belt conveyor spreads the slag steel on the ore belt conveyor, and the ore belt conveyor moves the ore and the slag steel into the blast furnace.
Further, in the feeding system for adding the slag steel into the blast furnace, a vibrating screen is arranged in the hopper, and the aperture of a screen hole of the vibrating screen is 7 mm.
Further, in the above charging system for charging the blast furnace with the slag steel, the F1 belt conveyor is interlocked with the hopper, and the F1 belt conveyor automatically stops after the weight of the slag steel entering the blast furnace through the F1 belt conveyor reaches a set weight.
Further, in the feeding system for adding the slag steel into the blast furnace, the granularity of the slag steel is less than or equal to 6 cm.
Further, in the above charging system for charging blast furnace slag steel, the top of the blast furnace is provided with a grid.
Further, in the above charging system for charging the blast furnace with the slag steel, the top of the blast furnace is provided with a receiving tank, a distributor is arranged below the receiving tank, and the ore belt conveyor moves the ore and the slag steel into the receiving tank and distributes the ore and the slag steel into the blast furnace through the distributor to form an ore bed.
Further, in the charging system for charging the blast furnace with the slag steel, a plurality of ore layers are distributed in the blast furnace from bottom to top, and coke is distributed between every two adjacent ore layers.
Further, in the feeding system of the blast furnace slag adding steel, the height of the ore bed is 63 cm-67 cm.
Further, in the above charging system for charging blast furnace slag steel, the periphery of the ore bed is close to the furnace wall of the blast furnace, and the cross section of the charge level formed by the ore bed at the throat of the blast furnace is annular.
Further, in the above charging system for blast furnace slag adding steel, the ore beds are located in the 1/3 area or 1/2 area of the radius of the blast furnace throat from the furnace wall.
The analysis can know, the utility model discloses a charging system of blast furnace with sediment steel, this blast furnace with sediment steel's charging system can add the blast furnace with the sediment steel, and the blast furnace adds the sediment steel is the technology between long flow and short flow, and it can reduce the consumption of ton iron coke, reduces the consumption of ton iron sinter, has reduced the emission of the produced waste material of production sinter and coke, waste water and waste gas widely. The blast furnace slag adding steel is an innovation of the traditional furnace material structure.
The blast furnace slag adding steel can recycle resources, so that the method becomes a recycling economy, changes waste into valuable, can greatly reduce the cost of iron per ton, improves the efficiency of the blast furnace, and improves the ecological environment. For the blast furnace, the utilization coefficient of the blast furnace can be improved, the fuel consumption of the blast furnace can be greatly reduced, and the economic benefit of enterprises is improved.
The blast furnace slag adding steel is an efficient method for digesting the slag steel, the fuel cost can be greatly reduced by adding the slag steel into the blast furnace, the expectation of various environmental protection pressures and productivity improvement is relieved, the waste disposal pressure of a company is reduced after the slag steel is recycled by the blast furnace, the environmental pollution caused in the waste disposal process is avoided, and considerable environmental protection benefits are achieved.
Drawings
The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. Wherein:
fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a distribution diagram of the burden in the blast furnace according to an embodiment of the present invention.
Description of reference numerals: 1, a forklift; 2, a hopper; 3F1 tape machine; 4, an ore belt conveyor; 5, a mineral layer; 6 coke layer; 7 furnace wall.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. Each example is provided by way of explanation of the invention and not limitation of the invention. In fact, it will be apparent to those skilled in the art that modifications and variations can be made in the present invention without departing from the scope or spirit of the invention. For instance, features illustrated or described as part of one embodiment, can be used with another embodiment to yield a still further embodiment. It is therefore intended that the present invention encompass such modifications and variations as fall within the scope of the appended claims and equivalents thereof.
In the description of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description of the present invention and do not require that the present invention must be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. The terms "connected", "connected" and "disposed" used in the present invention should be understood in a broad sense, and may be, for example, either fixedly connected or detachably connected; they may be directly connected or indirectly connected through intermediate members, and specific meanings of the above terms will be understood by those skilled in the art as appropriate.
The design idea of the application is as follows: because the slag steel belongs to metal iron, the slag steel only needs energy to be heated and melted into molten iron, and the energy required for reducing the ore with the same weight into the molten iron is far higher than that of the slag steel. Therefore, the slag steel is added in the charging process of the blast furnace, so that the productivity of the blast furnace can be improved, and the fuel ratio can be reduced. After slag steel is added into a blast furnace, the slag-iron ratio (slag-iron ratio refers to the slag amount of pig iron in a smelting unit in the blast furnace continuous casting iron-making process, and is called slag amount for short) is reduced, because the viscosity of liquid slag is far higher than that of molten iron, the air permeability of a high-temperature area in the furnace is enhanced, the air permeability is improved to provide conditions for improving the coal injection ratio and reducing the coke ratio, the price of coal powder with the same weight is less than half of that of coke, and the cost of iron per ton can be reduced by replacing coke with coal. The traditional furnace charge structure is as follows: ore + coke + jetting buggy, after the blast furnace adds the slag steel, the furnace charge structure becomes: the ore, slag steel, coke and coal powder are added into the blast furnace from the top of the blast furnace, and the coal powder is added into the blast furnace from a tuyere at the lower part of the blast furnace.
As shown in fig. 1 to 2, according to an embodiment of the present invention, there is provided a feeding system of blast furnace slag-added steel, wherein the burden material of the blast furnace includes ore, slag steel and coke, the feeding system of blast furnace slag-added steel includes a forklift 1, a hopper 2, an F1 belt conveyor 3(F1 is short for "belt 1" with slag), and an ore belt conveyor 4(TS101), wherein the ore belt conveyor 4 is of a conventional blast furnace burden structure, in which ore belt conveyor 4 can be used to distribute ore into the blast furnace, a nose of the F1 belt conveyor 3 is lower than a tail of the F1 belt conveyor 3, the hopper 2 is located above the nose of the F1 belt conveyor 3, a tail of the F1 belt conveyor 3 is located above the nose of the ore belt conveyor 4, a tail of the ore belt conveyor 4 is located above a top of the blast furnace, a receiving tank is provided with a receiving tank below, and a distributing device is provided below the receiving tank; after the slag steel is transported to a slag pool through an automobile, the slag steel can be loaded into the hopper 2 through the forklift 1, the slag steel falls on the F1 belt conveyor 3 through the hopper 2, the F1 belt conveyor 3 tiles the slag steel on the ore belt conveyor 4 through vibration, and the ore belt conveyor 4 moves the ore and the slag steel into a receiving tank at the top of the blast furnace and is distributed into the blast furnace through a distributor.
The ore, slag steel and coke are added from the top of the furnace, the feeding procedure is simple and easy to implement, and the additional investment is less. The mode can realize the transportation of the slag steel from the adhesive tape machine to the furnace top for feeding without changing a lot, and can be integrated into an automatic feeding control flow, thereby realizing the automatic feeding after setting the batch. In the charging system of the blast furnace slag-added steel, only the hopper 2 and the F1 belt conveyor 3 are newly added, and the ore belt conveyor 4 is inherent before the slag-added steel is not added, so that the newly added equipment is few and is simple and easy to implement.
The utility model discloses at first utilize the forklift 1 to utilize the shale shaker screening after with slag steel loading hopper 2, the slag steel that the granularity is greater than the shale shaker aperture drops and transports and weigh on F1 sealing-tape machine 3 (containing the belt weigher), and every batch of slag steel is 0.2 t. Then F1 belt conveyor 3 lays the slag steel on the ore of ore belt conveyor 4, and the slag steel and the ore enter into the blast furnace top material receiving tank and then are distributed into the blast furnace through the distributor. Slag steel feed bin (hopper 2) is by 1 direct feeding of forklift, and this kind of mode need not many changes traditional blast furnace for the material structure just can realize the slag steel material loading, and can merge into automatic feeding control flow, realizes setting up the material and criticize back automatic feeding. The construction of the charging system of the blast furnace slag adding steel can be completed by constructing the hopper 2 and the F1 belt conveyor 3 near the traditional blast furnace material structure, and the new equipment is few and is simple and easy to implement.
Further, be provided with the shale shaker in the hopper 2, the aperture of the sieve mesh of shale shaker is 7mm, and the shale shaker can filter the slag steel. The granularity of the slag steel is very uneven, the powder with the granularity of less than 7mm of the slag steel is screened by the vibrating screen, the slag steel with the granularity of more than or equal to 7mm completely enters the furnace, and if the powder with the granularity of less than 7mm of the slag steel enters the furnace along with the ore, the material distribution segregation phenomenon can occur, and the air permeability of the material bed near the axis and the furnace wall 7 is influenced.
Further, the F1 belt conveyor 3 is interlocked with the hopper 2, and the F1 belt conveyor 3 is automatically stopped when the weight of the slag steel entering the blast furnace through the F1 belt conveyor 3 reaches a set weight. Because the feeding is not continuous, the F1 belt conveyor 3 is rotated only when the feeding is needed, about 8 minutes is needed between the feeding of one batch and the waiting of the next batch, and the F1 belt conveyor 3 can save electricity by automatically stopping the belt in the 8 minutes. After the coke loading is completed, the program instructs the belt of the F1 belt conveyor 3 to start rotating.
The F1 belt conveyor 3 is interlocked with the hopper 2, when the weight of the slag steel weighed by the belt weigher of the F1 belt conveyor 3 reaches the set weight, the F1 belt conveyor 3 automatically stops feeding, and when the feeding of coke by the traditional blast furnace feeding structure is completed, the F1 belt conveyor 3 automatically restarts.
Only the slag steel is fed through the hopper 2 and the F1 belt conveyor 3, and the slag steel is small in quantity and suitable for a simple feeding device. The ore and coke are loaded using other existing specialized loading systems.
Furthermore, the granularity of the slag steel is less than or equal to 6 cm. When the diameter of the slag steel is reduced, the air permeability of the material bed near the furnace wall 7 is reduced, and the reduction of the air permeability of the material bed increases the gas flow in the axial center area, so that the average temperature of the gas at the top of the furnace is increased. When the diameter of the slag steel is increased, the air permeability of the material bed near the furnace wall 7 is increased, the heat loss of the furnace wall 7 is increased due to the increase of the air permeability of the material bed, and the temperature of the molten iron is reduced. The porosity (air permeability) of the charging material can be adjusted by adjusting the granularity of the slag steel, the condition that the air pore of the blast furnace is reduced under the high coal injection ratio is offset, the improvement of the air permeability provides conditions for improving the coal injection ratio and reducing the coke ratio, the price of the coal powder with the same weight is less than half of that of the coke, and the cost of iron per ton can be reduced by replacing the coke with the coal. The slag steel is crushed by the crusher, the granularity of the slag steel cannot exceed the aperture of the furnace top grid as much as possible by adjusting the parameters of the crusher, the granularity of the slag steel further meets the requirement of a blast furnace, the slag steel cannot pass through the aperture of the furnace top grid even if the slag steel with larger granularity exists, and the furnace top grid protects the central throat of the furnace throat and ensures that the central throat cannot be blocked.
Furthermore, the top of the blast furnace is provided with a grid. The grid is used for filtering out large blocks of furnace burden, the slag steel with larger granularity can not pass through the aperture of the grid on the furnace top, the grid can protect the central throat pipe of the furnace throat, the central throat pipe can not be clamped, the throat pipe on the furnace top can be prevented from being blocked, and the normal operation of the blast furnace can be ensured.
Further, a material receiving tank is arranged at the top of the blast furnace, a material distributor is arranged below the material receiving tank, and the ore and slag steel are moved into the material receiving tank by an ore sealing-tape machine 4 and distributed into the blast furnace through the material distributor to form an ore bed 5.
Further, as shown in fig. 2, a plurality of ore layers 5 are distributed in the blast furnace from bottom to top, coke is distributed between two adjacent ore layers 5, the coke is distributed in the blast furnace to form a coke layer 6, and the coke layer 6 and the ore layers 5 are sequentially overlapped.
Furthermore, the height of the ore layer 5 is 63 cm-67 cm, and the height of the coke layer 6 is 48 cm-51 cm. The height of the ore layer 5 and the coke layer 6 accords with the burden distribution rule of the blast furnace, and the burden distribution of the blast furnace is in a stable state.
Further, the periphery of the ore layer 5 is close to the furnace wall of the blast furnace, and the cross section of the material surface formed by the ore layer 5 at the furnace throat of the blast furnace is annular. The distribution of the ore and the slag steel in the furnace throat is implemented by a distribution matrix of the ore, the charge level shape of the furnace throat is annular, the annular is close to the furnace wall 7, the width of the annular is about half of the radius of the furnace throat, and the charge level shape is beneficial to improving the air flow distribution in the furnace, improving the air permeability of furnace charge, improving the utilization rate of coal gas and reducing the fuel ratio of the furnace.
Further, the deposits 5 are each located in the 1/3 or 1/2 region of the radius of the blast furnace throat from the furnace wall. Preferably the width of the ring is about half the radius of the throat of the blast furnace. That is, when the blast furnace throat specification is: furnace throat diameter is 7300mm, then the width of ring is 1825mm, the excircle and the contact of brickwork 7 of ring, ore and slag steel cloth are in the ring, so be provided with and do benefit to and build platform and funnel at the furnace throat, the ring that is close to the furnace throat forms the platform, the position that is close to furnace throat center forms the funnel because do not have direct cloth, the balanced development of stove interior air current, development center air current is taken into account marginal air current again, be favorable to improving coal gas utilization ratio, reduce fuel consumption. Be close to the most suitable cloth mode of brickwork 7 cloth, in the material of going into the stove, because the weight of slag steel accounts for than very little, either go into the stove simultaneously with the ore, or go into the stove simultaneously with the coke, the blast furnace cloth law is that the ore is closer to brickwork 7 than the coke, consequently slag steel accords with the blast furnace smelting law with the ore simultaneously in the stove. After the slag steel is added into the furnace, the blast furnace is very stable and smooth, the air permeability of the material layer and the coal gas utilization rate can obtain the optimal balance state, the fuel consumption can be reduced after the coal gas utilization rate is improved, and the molten iron cost is further reduced.
The feeding system for feeding the blast furnace slag steel comprises the following steps:
erecting the feeding system for the blast furnace slag-adding steel, building a hopper 2 provided with a vibrating screen near a traditional blast furnace feeding structure, mounting an F1 belt conveyor 3 below the hopper 2, and enabling the tail of the F1 belt conveyor 3 to be positioned above an ore belt conveyor 4, wherein the F1 belt conveyor 3 can spread the slag steel on the ore of the ore belt conveyor 4;
distributing, as shown in figure 2, an ore belt machine 4 distributes ore and slag steel into a blast furnace to form an ore layer 5, and distributes coke into the blast furnace to form a coke layer 6. In the charging material, coke and ore are charged separately, and the coke layer 6 (coke) and the ore layer 5 (ore and slag steel) are stacked in the furnace, and the slag steel is mixed with the ore and charged together.
Further, in the material distribution step, the batch weight of the ore is 50 t-53 t, 0.2t of slag steel is mixed in each batch of ore, and the mixing ratio of the ore and the slag steel is 250-265: 1. The height of an ore layer 5 formed by each batch of ore and slag steel is 63 cm-67 cm, and the height of each coke layer 6 is 48 cm-51 cm.
Further, in the material distribution step, the material of the ore bed 5 is distributed close to the furnace wall 7. The distribution modes are divided into three modes, namely central slag steel distribution, uniform slag steel distribution of the cross section of the furnace throat and 7 slag steel distribution close to the furnace wall. Experiments prove that compared with central slag steel distribution, the blast furnace central temperature of slag steel distribution close to the furnace wall 7 is greatly increased, the gas distribution in the blast furnace is unexpectedly improved, and the gas utilization rate is improved. The slag steel distribution is uniform near the cross section of the furnace throat, and the distribution mode near the furnace wall 7 has no influence on the smooth operation of the blast furnace and can improve the economic and technical indexes. The blast furnace operation emphasizes that an upper charging system is adaptive to a lower air supply system, the slag steel added on the furnace top close to the furnace wall 7 is just adaptive to the size and the length of a tuyere convolution area of the lower air supply system, the air permeability of the slag steel is smaller than that of coke and larger than that of ore, the air permeability of a charge column in the furnace can be improved when the slag steel is fed into the furnace, so that the reaction speed is increased, and the energy required by melting the slag steel in unit molten iron is less than that required by direct reduction reaction and melting, so the molten iron productivity is improved on the whole, and the fuel consumption is reduced. Therefore, the distribution close to the furnace wall 7 is the best of the three solutions.
Further, in the burden distribution step, the shape of the cross section of the burden surface formed by the ore bed 5 at the throat of the blast furnace is circular. Assuming that the diameter of the furnace throat is 6000mm, the material line is 1500mm, the material distribution angle is 31-39 degrees, namely the included angle between the lower surfaces of the ore layer 5 and the coke layer 6 and the horizontal plane is 31-39 degrees, the falling point of the burden materials (ore, slag steel and coke) is enabled to be close to the furnace wall 7, and the burden materials are enabled to be close to the furnace wall 7 (the falling point of the burden materials is distributed in the area with the distance of 1/2 or 1/3 area close to the furnace wall). From the furnace wall 7, the width of the circular ring belt accounts for 1/3-1/2 of the radius of the furnace throat of the blast furnace. By distributing close to the furnace wall is meant distributing the ore and slag steel to the 1/3 or 1/2 area at the radius of the furnace throat from the furnace wall.
Further, the distribution near the furnace wall 7 means that the ore and the slag steel are distributed to the 1/3 area or 1/2 area which is a radius of the throat of the blast furnace from the furnace wall 7.
And (3) calculating the benefit of the blast furnace slag adding steel: at present, the price of natural lump ore (such as Australian PB lump ore) is 1600 yuan, the grade (iron content) is 62%, the grade of slag steel is 72%, the quality is better than that of the lump ore, the slag steel amount added into a blast furnace every day is 30-33 tons according to the price of the lump ore, and the benefit is 48000 yuan-52800 yuan. The cost is saved by about 5 ten thousand yuan per day on average, the annual benefit is 1775 ten thousand yuan per day after 355 days of blast furnace working year. The slag steel is waste material produced in the production and processing process of factories, and the slag steel is transformed into a blast furnace through technology, so that waste is changed into valuable.
From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects:
a blast furnace adds the charging system of the slag steel, this blast furnace adds the charging system of the slag steel and adds the slag steel into the blast furnace, the slag steel of blast furnace adds the process between long flow and short flow, it can reduce the consumption of ton iron coke, reduce the consumption of ton iron sinter, has greatly reduced the emission of waste material, waste water and waste gas produced by producing sinter and coke. The blast furnace slag adding steel is an innovation of the traditional furnace material structure.
The blast furnace slag adding steel can recycle resources, so that the method becomes a recycling economy, changes waste into valuable, can greatly reduce the cost of iron per ton, improves the efficiency of the blast furnace, and improves the ecological environment. For the blast furnace, the utilization coefficient of the blast furnace can be improved, the fuel consumption of the blast furnace can be greatly reduced, and the economic benefit of enterprises is improved.
The blast furnace slag adding steel is an efficient method for digesting the slag steel, the fuel cost can be greatly reduced by adding the slag steel into the blast furnace, the expectation of various environmental protection pressures and productivity improvement is relieved, the waste disposal pressure of a company is reduced after the slag steel is recycled by the blast furnace, the environmental pollution caused in the waste disposal process is avoided, and considerable environmental protection benefits are achieved.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A charging system of blast furnace slag adding steel, the furnace burden of the blast furnace comprises ore and slag steel, which is characterized in that the charging system of the blast furnace slag adding steel comprises a forklift, a hopper, an F1 belt conveyor and an ore belt conveyor, wherein,
the machine head of the F1 belt conveyor is lower than the machine tail of the F1 belt conveyor, the hopper is positioned above the machine head of the F1 belt conveyor, the machine tail of the F1 belt conveyor is positioned above the machine head of the ore belt conveyor, and the machine tail of the ore belt conveyor is positioned above the top of the blast furnace;
the forklift can load the slag steel into the hopper, the slag steel falls from the hopper onto the F1 belt conveyor, the F1 belt conveyor spreads the slag steel on the ore belt conveyor, and the ore belt conveyor moves the ore and the slag steel into the blast furnace.
2. The charging system of blast furnace slagging steel according to claim 1,
a vibrating screen is arranged in the hopper, and the aperture of the screen hole of the vibrating screen is 7 mm.
3. The charging system of blast furnace slagging steel according to claim 1,
the F1 belt conveyor is interlocked with the hopper, and the F1 belt conveyor automatically stops after the weight of the slag steel entering the blast furnace through the F1 belt conveyor reaches the set weight.
4. The charging system of blast furnace slagging steel according to claim 1,
the granularity of the slag steel is less than or equal to 6 cm.
5. The charging system of blast furnace slagging steel according to claim 1,
the furnace top of the blast furnace is provided with a grid.
6. The charging system of blast furnace slagging steel according to claim 1,
the top of the blast furnace is provided with a receiving tank, a distributing device is arranged below the receiving tank, and the ore sealing-tape machine moves ore and slag steel into the receiving tank and is distributed into the blast furnace through the distributing device to form an ore bed.
7. The charging system of blast furnace slagging steel according to claim 6,
a plurality of ore layers are distributed in the blast furnace from bottom to top, and coke is distributed between every two adjacent ore layers.
8. The charging system of blast furnace slagging steel according to claim 6,
the height of the ore bed is 63 cm-67 cm.
9. The charging system of blast furnace slagging steel according to claim 6,
the periphery of the ore bed is close to the furnace wall of the blast furnace, and the shape of the cross section of the material surface of the ore bed formed at the furnace throat of the blast furnace is circular.
10. The charging system of blast furnace slagging steel according to claim 8,
the deposits are located in the 1/3 or 1/2 region of the radius of the blast furnace throat from the furnace wall.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113061678A (en) * | 2021-03-05 | 2021-07-02 | 大冶特殊钢有限公司 | Blast furnace feeding system and method for adding slag steel into blast furnace |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113061678A (en) * | 2021-03-05 | 2021-07-02 | 大冶特殊钢有限公司 | Blast furnace feeding system and method for adding slag steel into blast furnace |
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