Blast furnace return mine cold pressing ball processing system

Abstract

The utility model discloses a blast furnace return mine cold-pressed ball processing system which is characterized by comprising a batching module, a mixing module, a ball pressing module, a screening module, a drying and cooling module and a finished product module, the batching module is connected with the mixing module through a mixing belt conveyor; the mixing module is connected with the ball pressing module through a ball pressing belt conveyor; the ball pressing module is connected with the screening module through a screening belt conveyor; the screening module is connected with the drying and cooling module through a drying belt conveyor; the drying and cooling module is connected with the finished product module through a finished product belt conveyor; according to the utility model, a new treatment mode is provided for the blast furnace return mine, the problems of insufficient sintering capacity, high energy consumption and the like caused by the fact that the blast furnace return mine returns to the sintering process for re-sintering can be avoided, and meanwhile, the production energy consumption can be reduced by cooperatively utilizing the waste heat and the waste energy of the sintering ore in the sintering process.

Description

Technical Field

[0001] The utility model relates to a blast furnace return ore cold pressing ball processing system, belonging to the technical field of metallurgical blast furnace return material utilization. Background Art

[0002] In the metallurgical industry, blast furnace production will produce about 10% of blast furnace return ore, which is mainly sintered ore, pelletized ore, and lump ore with a particle size of less than 5mm. How to solve the blast furnace return ore problem stably and efficiently has been a long-standing problem that has plagued the industry.

[0003] A blast furnace return ore cold pressing ball processing system adopts a cold pressing ball process to cold press the blast furnace return ore into a shape and then directly supply it to the blast furnace; it can avoid the blast furnace return ore returning to the sintering process for repeated sintering, reduce the invalid cycle load of the sintering process, reduce the energy consumption of the sintering process, and release the sintering capacity. Utility Model Content

[0004] The utility model aims at the problems of the prior art and provides a blast furnace return ore cold pressing ball processing system, which provides a new processing method for the blast furnace return ore and avoids the blast furnace return ore returning to the sintering process for re-firing, resulting in insufficient sintering capacity and increased energy consumption.

[0005] To achieve the above purpose, the utility model patent is implemented as follows:

[0006] A blast furnace return ore cold pressing ball processing system, characterized in that it comprises a batching module, a mixing module, a ball pressing module, a screening module, a drying and cooling module, and a finished product module; the batching module is connected to the mixing module through a mixing belt conveyor; the mixing module is connected to the ball pressing module through a ball pressing belt conveyor; the ball pressing module is connected to the screening module through a screening belt conveyor; the screening module is connected to the drying and cooling module through a drying belt conveyor; the drying and cooling module is connected to the finished product module through a finished product belt conveyor;

[0007] The batching module includes an iron ore powder bin, a dust removal ash bin, a cementing material bin, a blast furnace return ore bin, and an internal return material bin; the discharge ports of the iron ore powder bin, the blast furnace return ore bin, and the internal return material bin are all provided with belt weighing feeders; the discharge ports of the dust removal ash bin and the cementing material bin are all provided with star-shaped ash discharge valves, a spiral conveyor scale is provided below the star-shaped ash discharge valve, and a humidifier is provided below the spiral conveyor scale;

[0008] The mixing module includes a mixer;

[0009] The ball pressing module comprises a ball pressing machine;

[0010] The screening module includes a wet-ball screening machine;

[0011] The drying and cooling module comprises a sintering ring cooler, and the sintering ring cooler comprises a ring cooler body and a ring cooler blower;

[0012] The screening module comprises a sintered finished product screening system, and the sintered finished product screening system comprises a finished product screening machine, a sintered return belt conveyor and a blast furnace feeding belt conveyor.

[0013] The above scheme further lies in that: the screen outlet of the wet-ball screening machine is connected to the feed outlet of the inner return silo through a belt conveyor.

[0014] The above scheme further lies in that the walls of the iron ore powder bin, dust ash bin, cementing bin, blast furnace return ore bin and inner return bin are all provided with bin wall vibrators.

[0015] The above scheme further lies in that: the humidifier is a double-axis spiral humidifier, and the double-axis spiral humidifier is equipped with a water supply pipe and a water volume regulating valve.

[0016] The above scheme further lies in that: the mixer is a horizontal drum mixer, and the horizontal drum mixer is equipped with a water supply pipe and a water volume regulating valve.

[0017] The above scheme further lies in that: the ball press machine is a double-roller ball press machine, and the ball size of the double-roller ball press machine is 30-50mm.

[0018] The above scheme further comprises: the wet-ball screening machine is a roller screening machine, and the screening gap of the roller screening machine is 8-15mm.

[0019] The main beneficial effects of the utility model are:

[0020] The utility model is a stable and reliable blast furnace return ore cold pressing ball processing system; the blast furnace return ore, dust removal ash, binder and internal return material are mixed in proportion, and then water is added for mixing and ball pressing, and the raw balls are screened, and the qualified wet balls are screened out and fed into a sintering ring cooler for drying and cooling, and then they are processed together with the sintered ore by a sintering screening system and supplied to the blast furnace.

[0021] The system of the utility model can avoid the problems of insufficient sintering capacity and high energy consumption caused by the return ore from the blast furnace being returned to the sintering process for re-firing; at the same time, the sintering ring cooler and component screening system of the sintering process can be coordinated to reduce the construction investment of the system of the utility model; the waste heat and waste energy of the sintered ore in the sintering process can also be coordinated to reduce the energy consumption of the system of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to make the purpose and beneficial effects of the utility model clearer, the utility model provides the following drawings:

[0023] Figure 1 It is the overall schematic diagram of the utility model system.

[0024] Figure markings: 01-batch module; 02-mixing module; 03-ball pressing module; 04-screening module; 05-drying and cooling module; 06-finished product module; 1-iron ore powder bin; 2-dust removal ash bin; 3-cementitious material bin; 4-blast furnace return ore bin; 5-internal return bin; 6-bin wall vibrator; 7-belt weighing feeder; 8-star ash discharge valve; 9-screw conveyor scale; 10-humidifier; 11-mixing belt conveyor; 12-mixer; 13-ball pressing belt conveyor; 14-ball pressing machine; 15-screening belt conveyor; 16-wet ball screening machine; 17-drying belt conveyor; 18-annular cooler body; 19-annular cooling blower; 20-finished product belt conveyor; 21-sintering finished product screening system; 22-small material return belt conveyor. DETAILED DESCRIPTION

[0025] The utility model is further described below in conjunction with the accompanying drawings:

[0026] like Figure 1 As shown, a blast furnace return ore cold pressing ball processing system is characterized in that it includes a batching module 01, a mixing module 02, a ball pressing module 03, a screening module 04, a drying and cooling module 05, and a finished product module 06; the batching module 01 is connected to the mixing module 02 through a mixing belt conveyor 11; the mixing module 02 is connected to the ball pressing module 03 through a ball pressing belt conveyor 13; the ball pressing module 03 is connected to the screening module 04 through a screening belt conveyor 15; the screening module 04 is connected to the drying and cooling module 05 through a drying belt conveyor 17; the drying and cooling module 05 is connected to the finished product module 06 through a finished product belt conveyor 20.

[0027] The raw materials of the cold pressing ball system are stored in the iron ore powder bin 1, the dust removal ash bin 2, the cementing material bin 3, the blast furnace return ore bin 4, and the inner return material bin 5. The bin walls are equipped with bin wall vibrators 6 to prevent blockage; the iron ore powder bin 1, the blast furnace return ore bin 4, and the inner return material bin 5 are respectively metered and proportioned by belt weighing feeders 7, the dust removal ash bin 2 is metered and proportioned by star-shaped ash discharge valves 8, spiral conveyor scales 9, and humidifiers 10, and the cementing material bin 3 is metered and proportioned by star-shaped ash discharge valves 8, spiral conveyor scales 9, and humidifiers 10; the various raw materials after metering are mixed together by a mixing belt conveyor 11 is fed into the mixer 12 for mixing by adding water; the mixed material is fed into the ball press machine 14 for ball pressing via the ball pressing belt conveyor 13; the ball pressing product is fed into the wet ball screening machine 16 for screening via the screening belt conveyor 15; the unqualified products are returned to the inner return bin 5 via the small material return belt conveyor 22, and the qualified products are fed into the ring cooler body 18 for drying and cooling via the drying belt conveyor 17. The dried and cooled finished balls and the sintered ore of the sintering process are fed into the sintering finished product screening system 21 via the finished product belt conveyor 20, and after being processed by the sintering finished product screening system 21, they are fed into the blast furnace process for blast furnace smelting.

[0028] Furthermore, the humidifier 10 and the mixer 12 are both equipped with water pipes and water regulating valves, and the water volume can be flexibly adjusted according to the raw material dosage and wet-bulb mass.

[0029] Furthermore, the qualified wet bulb products are fed into the middle section of the ring cooler body 18 via the drying belt conveyor 17. The temperature of the middle section of the ring cooler is about 400-500°C, which can effectively dry the wet bulbs without causing the cold pressed balls to burst due to high temperature.

[0030] Furthermore, the ball size of the ball press 12 is 30-50 mm, and the screening gap of the wet ball screening machine is 8-15 mm.

Claims

1. A blast furnace return ore cold pressing ball processing system, characterized by: It includes a batching module, a mixing module, a ball pressing module, a screening module, a drying and cooling module, and a finished product module; the batching module is connected to the mixing module via a mixing belt conveyor; the mixing module is connected to the ball pressing module via a ball pressing belt conveyor; the ball pressing module is connected to the screening module via a screening belt conveyor; the screening module is connected to the drying and cooling module via a drying belt conveyor; the drying and cooling module is connected to the finished product module via a finished product belt conveyor; The batching module includes an iron ore powder bin, a dust removal ash bin, a cementing material bin, a blast furnace return ore bin, and an internal return material bin; the discharge ports of the iron ore powder bin, the blast furnace return ore bin, and the internal return material bin are all provided with belt weighing feeders; the discharge ports of the dust removal ash bin and the cementing material bin are all provided with star-shaped ash discharge valves, a spiral conveyor scale is provided below the star-shaped ash discharge valve, and a humidifier is provided below the spiral conveyor scale; The mixing module includes a mixer; The ball pressing module comprises a ball pressing machine; The screening module includes a wet-ball screening machine; The drying and cooling module comprises a sintering ring cooler, and the sintering ring cooler comprises a ring cooler body and a ring cooler blower; The screening module comprises a sintered finished product screening system, and the sintered finished product screening system comprises a finished product screening machine, a sintered return belt conveyor and a blast furnace feeding belt conveyor.

2. A blast furnace return ore cold pressing ball processing system according to claim 1, characterized in that: The wet ball screening machine's screening outlet is connected to the feed outlet of the inner return bin through a belt conveyor.

3. The blast furnace return ore cold pressing ball processing system according to claim 1, characterized in that: The walls of the iron ore powder bin, dust removal ash bin, cementing bin, blast furnace return ore bin and inner return bin are all provided with bin wall vibrators.

4. The blast furnace return ore cold pressing ball processing system according to claim 1, characterized in that: The humidifier is a double-shaft spiral humidifier equipped with a water supply pipe and a water volume regulating valve.

5. The blast furnace return ore cold pressing ball processing system according to claim 1, characterized in that: The mixer is a horizontal drum mixer equipped with a water supply pipe and a water volume regulating valve.

6. The blast furnace return ore cold pressing ball processing system according to claim 1, characterized in that: The ball press is a double-roller ball press, and the ball size of the double-roller ball press is 30-50mm.

7. The blast furnace return ore cold pressing ball processing system according to claim 1, characterized in that: The wet ball screening machine is a roller screening machine, and the screening gap of the roller screening machine is 8-15mm.

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