CN211282950U - Blast furnace scrap steel feeding and charging system - Google Patents

Abstract

The utility model discloses a blast furnace scrap steel feeding and charging system, which comprises a scrap steel stacking and unloading area, a scrap steel charging area, a trestle, a feeding device and a blast furnace feeding transmission belt, wherein the scrap steel stacking and unloading area is used for scrap steel unloading and scrap steel stacking; the scrap steel feeding area is provided with a scrap steel feeding device; the trestle spans the upper parts of the scrap steel stacking and discharging area and the scrap steel charging area; the feeding equipment is arranged on the trestle, can move back and forth between the upper part of the scrap steel stacking and unloading area and the upper part of the scrap steel charging area along the trestle and is used for hoisting the scrap steel from the scrap steel stacking and unloading area to the scrap steel charging area; the blast furnace feeding conveying belt passes through the lower part of the scrap steel feeding device and is used for conveying raw materials and scrap steel to the blast furnace. The utility model has the advantages that the area of the scrap steel stacking and unloading area is larger than that of the automobile receiving groove, the scrap steel automobile receiving and unloading are flexible and can be carried along with unloading, and the stacking quantity is relatively large; the feeding process is short, the whole occupied area is small, the arrangement is flexible, and the total investment is low; and the scrap steel is not directly contacted with the belt so as to damage the belt.

Description

Blast Furnace Scrap Feeding and Feeding System

technical field

The utility model belongs to the technical field of blast furnace smelting, in particular to a blast furnace scrap steel feeding and feeding system.

Background technique

In the blast furnace ironmaking production process, iron-containing ores such as sinter, pellets and lump ore are usually added to the blast furnace for smelting through the feeding main belt conveyor. In recent years, various industries have produced a large amount of scrap steel in the process of production, replacement and scrapping. In order to improve the recycling rate of scrap steel, save resources, reduce the ratio of iron to fuel per ton of iron, save the cost of ironmaking, and increase the output of molten iron, etc. , creating greater economic benefits. Therefore, in recent years, adding scrap steel to the blast furnace for smelting is also a method commonly used by many iron and steel enterprises. However, how to better add scrap into the furnace is also a problem worthy of study, which needs to be comprehensively considered, such as scrap characteristics, quantitative scrap into the furnace, and general layout layout. At present, the method commonly used by steel mills is to add scrap steel to the feeding trough for scrap cars, and then add scrap to the feeding area through underground belt conveyors, transfer stations and other facilities. Inflexibility, queuing for unloading, crowded site, long transportation and feeding process, high investment, large occupation area, etc.

Utility model content

In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a blast furnace scrap steel feeding and feeding system, which solves the technical problems of inflexible discharge and long transportation and feeding process.

For realizing the above-mentioned purpose and other relevant purposes, the technical scheme of the present utility model is as follows:

A blast furnace scrap steel feeding and feeding system, comprising,

Scrap steel stacking and unloading area, which is used for scrap steel unloading trucks and scrap steel stacking;

The scrap steel feeding area is located on one side of the scrap steel stacking and unloading area, and the scrap steel feeding area is provided with a scrap steel feeding device;

a trestle, spanning above the scrap steel unloading area and the scrap steel feeding area;

The feeding equipment is arranged on the trestle and can move back and forth along the trestle between the upper part of the scrap steel unloading area and the upper part of the scrap steel feeding area, and is used to lift and transport the scrap steel from the scrap steel unloading area to the scrap steel feeding area;

The blast furnace charging conveyor belt, which passes through the scrap steel charging area and is located below the scrap steel charging device, is used to transport raw materials and scrap steel to the blast furnace.

The above structure, the scrap steel unloading area is larger than the car receiving trough, which has the advantages of flexible unloading and unloading with the scrap car unloading truck, and the stacking capacity is relatively large; the scrap steel is piled under the trestle, and the loading equipment covers the entire scrap steel The stockpiling area and the feeding area have the advantages of short feeding process, small overall footprint, flexible layout, and low total investment; It is well mixed, and the scrap does not directly contact with the belt, so the damage to the belt is small.

Optionally, the scrap steel feeding device includes a scrap steel silo, a feeding mechanism, a weighing mechanism and a feeding mechanism arranged in sequence from top to bottom. The measuring mechanism and the feeding mechanism fall on the charging conveyor belt of the blast furnace.

Optionally, the feeding device is an electromagnetic chuck crane or a grab crane.

Optionally, the top of the scrap steel bin is provided with a grille.

Optionally, the scrap steel bin is in the shape of a bucket.

Optionally, a detection element for detecting the amount of scrap steel is provided in the weighing mechanism.

Optionally, the scrap steel dumping area is provided with a passage for vehicles to enter and exit.

Optionally, the scrap steel unloading area and the scrap steel feeding area are located in the same workshop, arranged side by side, and separated by a partition wall.

Optionally, the weighing mechanism adopts a weighing funnel.

Optionally, a vibrating feeder is used for the feeding mechanism and the feeding mechanism.

The beneficial effects of the utility model are as follows: in the utility model, the scrap steel stacking and unloading area is larger than that of the automobile receiving trough, and the scrap steel automobile unloading truck can be flexibly unloaded with the incoming material, and the stacking capacity is relatively large; the scrap steel stack is stored under the trestle. , and the feeding equipment covers the entire scrap storage area and feeding area, which has the advantages of short feeding process, small overall footprint, flexible layout, and low total investment; Precise and evenly spread on the surface of the ore to make it fully mixed, and the scrap steel does not directly contact the belt so that the damage to the belt is small.

Description of drawings

FIG. 1 is a schematic diagram of the elevation layout of an embodiment of the present invention.

FIG. 2 is a schematic plan view of an embodiment of the present utility model;

FIG. 3 is a schematic diagram of the layout of the feeding area in the embodiment of the present invention.

Part Number Description

1- Scrap dumping area; 2- Scrap feeding area; 3- Trestle; 4- Feeding equipment; 5- Scrap silo; 6- Feeding mechanism; 7- Weighing mechanism; 8- Feeding mechanism; 9- Blast furnace charging Conveyor belt; 10-grid; 11-scrap; 12-partition.

Detailed ways

The embodiments of the present invention are described below by specific embodiments, and those who are familiar with the technology can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

It should be noted that the terms such as "up", "down", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and clarity, and are not used to limit this The applicable scope of the utility model and the change or adjustment of its relative relationship shall be regarded as the applicable scope of the present utility model without substantially changing the technical content.

Example

As shown in FIGS. 1 to 3 , a blast furnace scrap loading and feeding system exemplified in this embodiment includes a scrap stacking and unloading area 1 , a scrap feeding area 2 , a trestle 3 , and a feeding device, which are arranged in a stockyard or factory building. 4. Among them, the trestle 3 crosses the scrap steel unloading area 1 and the scrap steel feeding area 2, and provides a support and a walking platform for the loading equipment 4; Scrap steel 11 is stored; the stacking site is located below the trestle bridge 3, and the scrap steel can be transported to the stacking site by vehicles or loading vehicles, wherein the trestle bridge 3 can also be a walking platform, a portal beam, etc.

The scrap steel feeding area 2 is located on one side of the scrap steel stacking and unloading area 1. The scrap steel feeding area 2 is provided with a scrap steel feeding device, which is used for receiving the scrap steel sent by the feeding equipment 4 and feeding it to the blast furnace charging conveyor belt 9.

The loading equipment 4 is arranged on the trestle 3, and can move back and forth along the trestle 3 between the upper part of the scrap steel unloading area 1 and the upper part of the scrap steel feeding area 2, and is used for lifting and transporting the scrap from the scrap steel unloading area 1 to the scrap steel feeding area. 2. The feeding equipment 4 can adopt structures such as electromagnetic sucker cranes.

The blast furnace scrap steel feeding and feeding system further includes a blast furnace charging conveyor belt 9, and the blast furnace charging conveyor belt 9 passes under the scrap steel feeding device in the scrap steel feeding area 2, and is used for receiving the scrap steel from the scrap steel feeding device, and transferring the ore raw materials. and scrap steel to the blast furnace.

With the above structure, the scrap steel unloading area 1 has a larger area than the car receiving trough, which has the advantages of flexible unloading and walking with the scrap car unloading truck, and the stacking volume is relatively large; It has the advantages of short feeding process, small overall footprint and flexible layout (compared to the way of car receiving and underground belt conveyor conveying), and the total investment is low; the scrap feeding area 2 spans the blast furnace Just above the feeding conveyor belt 9, it has the advantages of being finely and evenly paved on the surface of the ore to make it fully mixed, and the scrap steel does not directly contact the belt, thus causing little damage to the belt.

In addition, the unloading of the vehicle in the scrap pile unloading area 1 and the feeding of the feeding area are relatively independent, do not interfere with each other, and have higher efficiency.

The scrap steel feeding device includes a scrap steel bin 5, a feeding mechanism 6, a weighing mechanism 7 and a feeding mechanism 8, which are arranged in sequence from top to bottom. The feeding mechanism 6 , the weighing mechanism 7 and the feeding mechanism 8 fall on the charging conveyor belt 9 of the blast furnace afterward.

The scrap steel feeding device straddles above the blast furnace charging conveyor belt 9 , through the feeding mechanism 6 , the weighing mechanism 7 and the charging mechanism 8 , it is convenient to quantitatively feed the scrap steel to the blast furnace charging conveyor belt 9 .

The scrap steel bin 5 is in the shape of a bucket, and the top of the scrap steel bin 5 is provided with a steel grille 11 to prevent large pieces of scrap steel from entering and affecting the smoothness of feeding.

The weighing mechanism 7 is provided with a detection element for detecting the amount of scrap steel, which can detect the weight of scrap steel in the weighing mechanism 7 or whether there is scrap steel, so as to control the feeding amount of the feeding mechanism 8 . And when there is no scrap steel in the weighing mechanism 7, the feeding mechanism 6 above it will feed the scrap steel in the scrap steel bin 5 to the weighing mechanism 7 for storage. As the detection element, a load cell or the like can be used.

As shown in FIG. 2 , the scrap steel unloading area 1 and the scrap steel feeding area 2 are located in the same factory building or stockyard, are arranged side by side, and are separated by a partition wall 12 . The side of the stacking yard of the scrap steel unloading area 1 away from the scrap steel feeding area 2 is provided with a passage for vehicles to enter and exit, so that the scrap steel can be unloaded.

Wherein, the weighing mechanism 7 , the feeding mechanism 6 and the feeding mechanism 8 can all adopt existing structures, for example, the weighing mechanism 7 adopts a weighing funnel with an electronic indenter scale. The feeding mechanism 6 and the feeding mechanism 8 use a vibrating feeder or the like.

The workflow of the present utility model is as follows:

Scrap steel is transported by vehicles or loading vehicles and unloaded for storage in the scrap steel unloading area 1 covered by the trestle 3. The scrap steel is loaded into the scrap steel bin 5 in the feeding area through the loading equipment 4 set on the trestle 3. When the blast furnace needs to add scrap steel, the feeding mechanism 8 adds the scrap steel in the weighing mechanism 7 to the ore surface of the blast furnace charging conveyor belt 9, and enters the furnace together with the ore on the blast furnace charging conveyor belt 9. When there is no scrap steel in the weighing mechanism 7, the feeding mechanism 6 above it feeds the scrap steel in the scrap steel bin 5 to the weighing mechanism 7 for storage.

Scrap unloading, loading and feeding do not affect each other, improving efficiency. Scrap vehicles are flexibly unloaded with the incoming unloading truck, the stockpiling volume is relatively large, the feeding process is short, the area occupied by scrap steel facilities is small, and the total investment is low. Damage is small.

The above-mentioned embodiments merely illustrate the principles and effects of the present invention, but are not intended to limit the present invention. Anyone skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present invention should still be covered by the claims of the present invention.

Claims (10)

1. a blast furnace scrap steel feeding and charging system, is characterized in that: comprise, Scrap steel stacking and unloading area, which is used for scrap steel unloading trucks and scrap steel stacking; The scrap steel feeding area is located on one side of the scrap steel stacking and unloading area, and the scrap steel feeding area is provided with a scrap steel feeding device; a trestle, spanning above the scrap steel unloading area and the scrap steel feeding area; The feeding equipment is arranged on the trestle and can move back and forth along the trestle between the upper part of the scrap steel unloading area and the upper part of the scrap steel feeding area, and is used to lift and transport the scrap steel from the scrap steel unloading area to the scrap steel feeding area; The blast furnace charging conveyor belt, which passes through the scrap steel charging area and is located below the scrap steel charging device, is used to transport raw materials and scrap steel to the blast furnace. 2. The blast furnace scrap feeding and feeding system according to claim 1, wherein the scrap feeding device comprises a scrap silo, a feeding mechanism, a weighing mechanism and a feeding mechanism sequentially arranged from top to bottom. The scrap sent by the equipment falls into the scrap silo and then falls on the blast furnace charging conveyor belt through the feeding mechanism, the weighing mechanism and the feeding mechanism. 3 . The blast furnace scrap steel feeding and feeding system according to claim 1 , wherein the feeding device is an electromagnetic sucker crane or a grab crane. 4 . 4 . The blast furnace scrap steel feeding and feeding system according to claim 2 , wherein the top of the scrap steel silo is provided with a grille. 5 . 5 . The blast furnace scrap steel feeding and feeding system according to claim 2 , wherein the scrap steel silo is bucket-shaped. 6 . 6 . The blast furnace scrap steel feeding and feeding system according to claim 2 , wherein the weighing mechanism is provided with a detection element for detecting the amount of scrap steel. 7 . 7 . The blast furnace scrap loading and feeding system according to claim 1 , wherein: the scrap dumping area is provided with a passage for vehicles to enter and exit. 8 . 8 . The blast furnace scrap loading and feeding system according to claim 1 , wherein the scrap dumping area and the scrap feeding area are located in the same workshop, arranged side by side, and separated by partition walls. 9 . 9 . The blast furnace scrap steel feeding and feeding system according to claim 2 , wherein the weighing mechanism adopts a weighing funnel. 10 . 10 . The blast furnace scrap steel feeding and feeding system according to claim 2 , wherein the feeding mechanism and the feeding mechanism adopt a vibrating feeder. 11 .

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