CN215288920U - Lump ore pretreatment system - Google Patents
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- CN215288920U CN215288920U CN202120610125.1U CN202120610125U CN215288920U CN 215288920 U CN215288920 U CN 215288920U CN 202120610125 U CN202120610125 U CN 202120610125U CN 215288920 U CN215288920 U CN 215288920U
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Abstract
A lump ore pretreatment system comprises a lump ore raw material conveying device (1), a lump ore drying bin (2), a dried material conveying device (3) and a screening device (4); wherein: a discharge hole of the lump ore raw material conveying device (1) is connected to a feed hole (201) of the lump ore drying bin (2), and a dried material outlet (202) of the lump ore drying bin (2) is connected to an upstream feed hole (401) of the screening device (4) through the dried material conveying device (3); the lump ore drying bunker (2) is provided with a heat medium inlet (203) and a heat medium outlet (204). The utility model discloses a system simple and easy, practical, reliable, the abundant characteristics of make full use of steel mill hot waste gas resource effectively reduce lump ore preliminary treatment cost, solve the lump ore and go into a stove difficult problem, improved blast furnace lump ore and gone into stove proportion and gas permeability level, effectively reduced blast furnace manufacturing cost, improved the blast furnace level of going in the same direction as a journey.
Description
Technical Field
The utility model relates to a lump ore pretreatment systems, concretely relates to pretreatment systems to lump ore powder, moisture content belongs to steel smelting technical field.
Background
The consumption of steel as an irreplaceable structural and functional material in the industrialization process occupies more than 95 percent of the total consumption of metal in a long time. The raw pig iron materials required by the iron and steel industry are mainly provided by blast furnace smelting, and the improvement of the blast furnace smelting technology and the reduction of the cost have profound significance for promoting the development of iron and steel enterprises. The basic link of blast furnace intensified smelting is fine material operation, natural lump ore is used as one of main components of charging material, the addition amount of the natural lump ore can reach 20% at most, and as the lump ore contains a large amount of powder with the particle size smaller than 8mm, the airflow distribution in the furnace is abnormal after dust enters the blast furnace, so that the fuel ratio, the coke ratio and the ore consumption are improved. Therefore, the effective screening of the lump ore has important significance for reducing the production cost of the pig iron.
Common furnace charging materials for blast furnaces include sintered ores, pellets and natural lump ores. The reasonable blast furnace charging material structure is that the optimum matching proportion of different types of iron-containing ores is found out by adjusting the proportion of sintered ores, pellets and natural lump ores in the iron ores fed into the furnace, so that various economic and technical indexes of blast furnace smelting under the charging material structure are relatively ideal, and the consumption cost of unit pig iron smelting is relatively lowest. Research shows that the cost expenditure of iron ore and other raw material links accounts for about 60% of the total cost of pig iron, and the improvement of the charging proportion of lump ore is an effective measure for reducing the raw material cost of blast furnaces. At present, the charging proportion of lump ore is generally 5-15%, and the proportion is low, because the charging of lump ore has the following main problems: (1) the water content of the lump ore is high, generally 8-15%, and the water content of the lump ore in rainy season of individual port steel mills even exceeds 20%. After the high-moisture lump ore is fed into the furnace, energy is consumed for moisture drying, a certain time is needed in the drying process, and the coke ratio of the blast furnace is improved; (2) the lump ore powder content is high, and the amount of the lump ore powder which is not subjected to screening treatment is about 30 percent. After the high-powder lump ore is fed into the furnace, the air permeability level of the blast furnace is reduced, the normal production of the blast furnace is influenced, and the influence on the smooth operation of the steel process and the economic benefit of a steel mill is obvious.
At present, due to the fact that the powder material is high in viscosity and high in dust rate, effective grading and granule finishing of lump ore are difficult to achieve through a pre-iron screening technology. As the moisture content of the lump ore reaches 12 percent, the screening effect is not ideal, so that the powder ore adhered to the surface of the lump ore finally enters the blast furnace, the air permeability of the blast furnace is influenced, the smelting cost of the blast furnace is increased, and the stability of the furnace condition is influenced. (1) The lump ore is directly fed into the furnace without being pretreated. Because the lump ore powder content is high and the moisture content is large, the lump ore which is not pretreated is directly fed into the furnace, so that the energy is consumed, the coke ratio of the blast furnace is improved, the air permeability level of the blast furnace is reduced, the normal production of the blast furnace is influenced, and the influence on the smooth steel process and the economic benefit of a steel mill is obvious. (2) And (4) screening and pretreating the lump ore, and directly feeding the lump ore into a furnace. The moisture content of the lump ore after the screening pretreatment is high, energy is consumed for moisture drying after the lump ore is directly fed into the furnace, a certain time is required in the drying process, and the coke ratio of the blast furnace is improved. (3) Drying and pretreating lump ore by a cylinder, and directly feeding into a furnace. The content of lump ore powder after the cylinder drying pretreatment is still higher, and after the high-powder lump ore enters the furnace, the air permeability level of the blast furnace is reduced, the normal production of the blast furnace is influenced, and the influence on the smooth operation of the steel process and the economic benefit of a steel mill is obvious. The cylinder drying investment is large, the operation cost is high, lump ores are crushed due to mutual extrusion in the drying process to generate new powder, and the influence on the air permeability of the blast furnace is large after the lump ores are fed into the furnace.
Therefore, the reduction of the water content in the lump ore has important significance for reducing the iron-making cost and enhancing the stability of the furnace condition. At present, lump ore drying systems have the difficult problems of high construction cost, low drying efficiency, high energy consumption and the like.
SUMMERY OF THE UTILITY MODEL
The utility model discloses carry out the preliminary treatment of pertinence to two problems that the lump ore is gone into the stove, the technical problem who plans to solve as follows: (1) the lump ore has high moisture content. The utility model adopts the drying process, utilizes the characteristic of abundant hot waste gas resources in the steel process, introduces the hot waste gas into the lump ore bin nearby, directly dries the material in the bin, and reduces the moisture of the lump ore; (2) the lump ore powder content is high, and the amount of the lump ore powder which is not subjected to screening treatment is about 30 percent. The utility model discloses a screening process utilizes the screen frame of special material and shape according to the strong characteristics of lump ore material powder viscidity, and the powder in the lump ore is removed to the high-efficient screening. The utility model discloses a system simple and easy, practical, reliable, the abundant characteristics of make full use of steel mill hot waste gas resource effectively reduce lump ore preliminary treatment cost, solve the lump ore and go into a stove difficult problem, improved blast furnace lump ore and gone into stove proportion and gas permeability level, effectively reduced blast furnace manufacturing cost, improved the blast furnace level of going in the same direction as a journey.
According to the utility model discloses an embodiment provides a lump ore pretreatment systems.
A lump ore pretreatment system comprises a lump ore raw material conveying device, a lump ore drying bin, a dried material conveying device and a screening device. Wherein: the discharge port of the lump ore raw material conveying device is connected to the feed port of the lump ore drying bin, and the dried material outlet of the lump ore drying bin is connected to the upstream feed port of the screening device through the dried material conveying device. The lump ore drying bunker is provided with a heat medium inlet and a heat medium outlet.
In the utility model, the system also comprises a blast furnace. And an oversize outlet is arranged at the downstream of the screening device. The oversize outlet is connected to the feed inlet of the blast furnace through a conveying device.
In the present invention, the system further comprises a sintering and batching system. And a screen underflow discharge port is formed at the bottom of the screening device. The screen underflow discharge port is connected to the sintering batching system through a conveying device.
The utility model discloses in, the screening device is one of powerful sieve, ripple sieve, cantilever sieve.
Preferably, a heat medium flow guide device is arranged in the lump ore drying bin. The heat medium flow guiding device is provided with a heat medium flow guiding inlet and a heat medium flow guiding outlet. And a heat medium inlet of the lump ore drying bin is communicated with the heat medium diversion inlet.
Preferably, 1-20 heat medium diversion devices, preferably 2-5 heat medium diversion devices are arranged in the lump ore drying bin. And the heat medium diversion inlets of all the heat medium diversion devices are communicated with the heat medium inlet.
The utility model discloses in, each be equipped with 1-200 on the heat medium guiding device heat medium water conservancy diversion export, preferably be equipped with 2-100 the heat medium water conservancy diversion export.
The utility model discloses in, the hot medium entry sets up in the middle part or the lower part of dry feed bin of lump ore, and the hot medium export sets up on the upper portion or the top of dry feed bin of lump ore. Generally, a feed inlet of the lump ore drying silo is arranged at the top of the lump ore drying silo, and a drying material outlet of the lump ore drying silo is arranged at the bottom of the lump ore drying silo.
The utility model discloses in, be equipped with the high temperature exhaust outlet on the blast furnace, the high temperature exhaust outlet passes through the hot medium entry intercommunication of hot medium pipeline and dry feed bin of lump ore deposit.
The utility model discloses in, screening plant's sieve mesh size is 5 ~ 30mm, preferably 5 ~ 10 mm.
Preferably, a moisture detection device is arranged at a dried material outlet of the lump ore drying bin.
The utility model provides a lump ore deposit pretreatment systems. The utility model discloses to the big and high difficult problem of powder content of moisture that natural lump ore exists, provided the preprocessing method of drying + screening. In the utility model, lump ore is firstly subjected to drying pretreatment in a lump ore drying bin to remove moisture of the lump ore, and a heat source required by drying is hot waste gas of a steel mill (such as hot waste gas generated by a blast furnace); and the dried lump ore enters a screening process, powder attached to the lump ore is removed through the screening process, oversize products obtained in the screening process enter a blast furnace, and undersize products return to a sintering batching system. The utility model provides a pretreatment methods is simple and easy, practical, reliable, does benefit to the engineering and popularizes and applies, compares with traditional drum drying process technology, the utility model discloses a ripe drying + screening pretreatment technique, the moisture desorption of lump ore is efficient, the powder sieves except that effectual, has solved the difficult problem that the lump ore is gone into the stove, has improved blast furnace lump ore and has gone into stove proportion and gas permeability level, has effectively reduced blast furnace manufacturing cost, has improved the blast furnace level of going forward. The popularization of the utility model has good economic, social and environmental benefits, and is expected to open up a more stable and efficient way for the development of the lump ore pretreatment process in China.
Because natural lump ore moisture content is high, the powder viscosity is big, directly sieves the processing to the lump ore and is difficult to realize effective grading, the whole grain to the lump ore, and the lump ore further probably produces new powder in drying process moreover, consequently the utility model discloses select earlier dry back screening to the preliminary treatment of lump ore. The dried lump ore is screened, the grading effect is better, and new powder generated in the drying process can be screened together, so that the obtained oversize product, namely the dried large-particle-size lump ore, meets the requirement of entering a blast furnace for smelting better, the charging proportion and the air permeability level of the blast furnace lump ore are improved, the production cost of the blast furnace is effectively reduced, and the smooth level of the blast furnace is improved.
The utility model discloses in, the hot exhaust gas temperature of stoving process is 100 ~ 300 ℃, and the preferred 150 ~ 250 ℃. The drying time is 1-10 h, preferably 2-5 h. The hot air flow is 100000-300000 m3Preferably 150000 to 200000m3/h。
The utility model provides a pair of lump ore pretreatment systems, natural lump ore pass through lump ore raw materials conveyor and carry to the dry feed bin of lump ore, and the lump ore is stored in the dry feed bin of lump ore to dry in the dry feed bin of lump ore, reduce the moisture content in the lump ore. And conveying the dried lump ore in the lump ore drying bin to a screening device, screening the lump ore by the screening device according to the granularity or the particle size, and conveying oversize materials (namely the dried large-particle-size lump ore subjected to moisture reduction and particle size screening) meeting the particle size requirement on the screen to a blast furnace for smelting.
The utility model discloses in, the piece ore deposit is after sieving the device, and screening plant's undersize thing can be carried to sintering feed proportioning system, and the undersize thing gets into the sintering process.
The utility model discloses in, be equipped with heat medium guiding device in the dry feed bin of lump ore for heat medium distributes evenly in the dry feed bin of lump ore, and the contact of lump ore and heat medium is more abundant, thereby the moisture content in the more effectual reduction lump ore.
In the present invention, the heat medium may be hot exhaust gas with a high temperature or hot air after heat treatment. Generally, the temperature of the heat medium is higher than 100 ℃.
The utility model discloses in, utilize the dry feed bin of lump ore as place and the device to the dry process of lump ore, make full use of current equipment resource realizes the dehydration process of lump ore, need not additionally to increase new equipment. The utility model discloses only need set up hot medium entry and hot medium export on original lump ore drying feed bin can.
As an optimal scheme, a heat medium flow guide device is arranged in a lump ore drying bin, so that lump ore is fully contacted with a heat medium, the dehydration effect of the lump ore is improved, the moisture content in the lump ore before entering the blast furnace meets the requirement, the energy consumption of the blast furnace is reduced, the normal operation of blast furnace procedures is ensured, the quality of blast furnace products is improved, and meanwhile, the production cost is saved.
Compared with the prior art, the technical scheme of the utility model following beneficial technological effect has:
1. the moisture removal effect is good. The utility model discloses a stoving process utilizes the abundant characteristics of the hot waste gas resource of steel flow, introduces the dry feed bin of lump ore with hot waste gas nearby, directly carries out the drying to the material in the storehouse, reduces the moisture of lump ore.
2. The powder removal rate is high. The utility model discloses a screening process utilizes the screen frame of special material and shape according to the strong characteristics of lump ore material powder viscidity, and the powder in the dry back lump ore deposit is removed to the high-efficient screening.
3. The utility model discloses a system simple and easy, practical, reliable, the abundant characteristics of make full use of steel mill hot waste gas resource effectively reduce lump ore preliminary treatment cost, solve the lump ore and go into a stove difficult problem, improved blast furnace lump ore and gone into stove proportion and gas permeability level, effectively reduced blast furnace manufacturing cost, improved the blast furnace level of going in the same direction as a journey.
Drawings
Fig. 1 is a schematic structural diagram of a lump ore pretreatment system of the present invention;
FIG. 2 is a schematic structural view of a lump ore pretreatment system of the present invention, in which a blast furnace, a sintering and batching system and a moisture detection device are arranged;
fig. 3 is a top view of the heat medium guiding device in the lump ore pretreatment system of the present invention.
Reference numerals:
1: a lump ore raw material conveying device; 2: drying a bulk ore bin; 201: a feed inlet of a lump ore drying bin; 202: a dried material outlet of the lump ore drying bin; 203: a heat medium inlet of the lump ore drying bin; 204: a heat medium outlet of the lump ore drying bin; 205: a thermal medium flow guide device; 20501: a heat medium diversion inlet; 20502: a heat medium diversion outlet; 3: a dried material conveying device; 4: a screening device; 401: an upstream feed inlet of the screening device; 402: an oversize material outlet of the screening device; 403: a screen underflow outlet of the screening device; 5: a blast furnace; 501: a high temperature exhaust gas outlet; 6: a sintering batching system; 7: a moisture detection device; l0: a heat medium delivery pipe.
Detailed Description
The technical solution of the present invention is illustrated below, and the claimed invention includes but is not limited to the following embodiments.
According to the utility model discloses an embodiment provides a lump ore pretreatment systems.
The utility model provides a lump ore pretreatment systems, this system includes lump ore raw materials conveyor 1, lump ore drying feed bin 2, dry back material conveyor 3, screening plant 4. Wherein: the discharge port of the lump ore raw material conveying device 1 is connected to the feed port 201 of the lump ore drying bin 2, and the dried material outlet 202 of the lump ore drying bin 2 is connected to the upstream feed port 401 of the screening device 4 through the dried material conveying device 3. The lump ore drying silo 2 is provided with a heat medium inlet 203 and a heat medium outlet 204.
In the present invention, the system further comprises a blast furnace 5. Downstream of the screening device 4 there is an oversize outlet 402. The oversize outlet 402 is connected to the feed inlet of the blast furnace 5 by means of a conveyor.
In the present invention, the system further comprises a sintering and batching system 6. The bottom of the screening device 4 is provided with a screen underflow outlet 403. The undersize discharge port 403 is connected to the sinter batch system 6 by a conveying device.
The utility model discloses in, screening plant 4 is one of powerful sieve, ripple sieve, cantilever sieve.
Preferably, a heat medium diversion device 205 is arranged in the lump ore drying bunker 2. The heat medium guide device 205 is provided with a heat medium guide inlet 20501 and a heat medium guide outlet 20502. The heat medium inlet 203 of the lump ore drying bunker 2 is communicated with the heat medium diversion inlet 20501.
Preferably, 1 to 20 heat medium diversion devices 205, preferably 2 to 5 heat medium diversion devices 205 are arranged in the lump ore drying silo 2. The heat medium guide inlets 20501 of all the heat medium guide devices 205 communicate with the heat medium inlet 203.
In the present invention, each of the heat medium guiding devices 205 is provided with 1 to 200 heat medium guiding outlets 20502, preferably 2 to 100 heat medium guiding outlets 20502.
The utility model discloses in, hot medium entry 203 sets up in the middle part or the lower part of lump ore drying bunker 2, and hot medium export 204 sets up on the upper portion or the top of lump ore drying bunker 2.
The utility model discloses in, be equipped with high temperature exhaust outlet 501 on the blast furnace 5, high temperature exhaust outlet 501 passes through hot medium pipeline L0 and the hot medium entry 203 intercommunication of dry feed bin 2 of lump ore.
The utility model discloses in, screening plant 4's sieve mesh size is 5 ~ 30mm, preferably 5 ~ 10 mm.
Preferably, a moisture detection device 7 is arranged at the dried material outlet 202 of the lump ore drying bunker 2.
Example 1
As shown in fig. 1, the lump ore pretreatment system comprises a lump ore raw material conveying device 1, a lump ore drying bin 2, a dried material conveying device 3 and a screening device 4. Wherein: the discharge port of the lump ore raw material conveying device 1 is connected to the feed port 201 of the lump ore drying bin 2, and the dried material outlet 202 of the lump ore drying bin 2 is connected to the upstream feed port 401 of the screening device 4 through the dried material conveying device 3. The lump ore drying silo 2 is provided with a heat medium inlet 203 and a heat medium outlet 204.
Example 2
As shown in fig. 2, the lump ore pretreatment system comprises a lump ore raw material conveying device 1, a lump ore drying bin 2, a dried material conveying device 3 and a screening device 4. Wherein: the discharge port of the lump ore raw material conveying device 1 is connected to the feed port 201 of the lump ore drying bin 2, and the dried material outlet 202 of the lump ore drying bin 2 is connected to the upstream feed port 401 of the screening device 4 through the dried material conveying device 3. The lump ore drying silo 2 is provided with a heat medium inlet 203 and a heat medium outlet 204. The system also includes a blast furnace 5. Downstream of the screening device 4 there is an oversize outlet 402. The oversize outlet 402 is connected to the feed inlet of the blast furnace 5 by means of a conveyor. The system also includes a sinter batch system 6. The bottom of the screening device 4 is provided with a screen underflow outlet 403. The undersize discharge port 403 is connected to the sinter batch system 6 by a conveying device.
Example 3
Example 2 was repeated except that the screening device 4 was a power screen. The heat medium inlet 203 of the lump ore drying bin 2 is arranged at the lower part of the lump ore drying bin 2, and the heat medium outlet 204 is arranged at the top of the lump ore drying bin 2.
Example 4
Example 2 was repeated except that the screening device 4 was a corrugated screen.
Example 5
Example 2 was repeated except that the screening device 4 was a cantilever screen.
Example 6
As shown in fig. 3, example 3 is repeated except that a heat medium guiding device 205 is provided in the lump ore drying silo 2. The heat medium guide device 205 is provided with a heat medium guide inlet 20501 and a heat medium guide outlet 20502. The heat medium inlet 203 of the lump ore drying bunker 2 is communicated with the heat medium diversion inlet 20501.
Example 7
Example 6 was repeated except that 2 of the heat medium guiding devices 205 were provided in the lump ore drying silo 2. The heat medium guide inlets 20501 of all the heat medium guide devices 205 communicate with the heat medium inlet 203. Each of the heat medium guiding devices 205 is provided with 8 heat medium guiding outlets 20502.
Example 8
Example 7 was repeated except that the blast furnace 5 was provided with a high-temperature exhaust gas outlet 501, and the high-temperature exhaust gas outlet 501 was communicated with the heat medium inlet 203 of the lump ore drying silo 2 through a heat medium delivery pipe L0.
Example 9
Example 8 is repeated except that the drying material outlet 202 of the lump ore drying bunker 2 is provided with a moisture detection device 7.
Example 10
Example 9 was repeated except that the screening device 4 had a mesh size of 8 mm.
Example 11
Example 9 was repeated except that the screening device 4 had a mesh size of 10 mm.
Claims (28)
1. A lump ore pretreatment system is characterized in that: the system comprises a lump ore raw material conveying device (1), a lump ore drying bin (2), a dried material conveying device (3) and a screening device (4); wherein: a discharge hole of the lump ore raw material conveying device (1) is connected to a feed hole (201) of the lump ore drying bin (2), and a dried material outlet (202) of the lump ore drying bin (2) is connected to an upstream feed hole (401) of the screening device (4) through the dried material conveying device (3); the lump ore drying bunker (2) is provided with a heat medium inlet (203) and a heat medium outlet (204).
2. The lump ore pretreatment system of claim 1, wherein: the system also comprises a blast furnace (5); an oversize outlet (402) is arranged at the downstream of the screening device (4); the oversize outlet (402) is connected to the feed inlet of the blast furnace (5) by means of a conveyor.
3. The lump ore pretreatment system according to claim 1 or 2, wherein: the system further comprises a sintering batching system (6); a screen underflow discharge hole (403) is formed in the bottom of the screening device (4); the undersize material outlet (403) is connected to the sintering batching system (6) through a conveying device.
4. The lump ore pretreatment system according to claim 1 or 2, wherein: the screening device (4) is one of a strong screen, a corrugated screen and a cantilever screen.
5. The lump ore pretreatment system of claim 3, wherein: the screening device (4) is one of a strong screen, a corrugated screen and a cantilever screen.
6. Lump ore pretreatment system according to any one of claims 1-2, 5, characterized in that: a heat medium diversion device (205) is arranged in the lump ore drying bin (2); the heat medium flow guide device (205) is provided with a heat medium flow guide inlet (20501) and a heat medium flow guide outlet (20502); and a heat medium inlet (203) of the lump ore drying bin (2) is communicated with the heat medium diversion inlet (20501).
7. The lump ore pretreatment system of claim 3, wherein: a heat medium diversion device (205) is arranged in the lump ore drying bin (2); the heat medium flow guide device (205) is provided with a heat medium flow guide inlet (20501) and a heat medium flow guide outlet (20502); and a heat medium inlet (203) of the lump ore drying bin (2) is communicated with the heat medium diversion inlet (20501).
8. The lump ore pretreatment system of claim 4, wherein: a heat medium diversion device (205) is arranged in the lump ore drying bin (2); the heat medium flow guide device (205) is provided with a heat medium flow guide inlet (20501) and a heat medium flow guide outlet (20502); and a heat medium inlet (203) of the lump ore drying bin (2) is communicated with the heat medium diversion inlet (20501).
9. The lump ore pretreatment system of claim 6, wherein: 1-20 heat medium diversion devices (205) are arranged in the lump ore drying bin (2).
10. The lump ore pretreatment system according to claim 7 or 8, wherein: 1-20 heat medium diversion devices (205) are arranged in the lump ore drying bin (2).
11. The lump ore pretreatment system of claim 9, wherein: 2-5 heat medium diversion devices (205) are arranged in the lump ore drying bin (2); the heat medium guide inlets (20501) of all the heat medium guide devices (205) are communicated with the heat medium inlets (203).
12. The lump ore pretreatment system of claim 10, wherein: 2-5 heat medium diversion devices (205) are arranged in the lump ore drying bin (2); the heat medium guide inlets (20501) of all the heat medium guide devices (205) are communicated with the heat medium inlets (203).
13. The lump ore pretreatment system of claim 6, wherein: each heat medium flow guide device (205) is provided with 1-200 heat medium flow guide outlets (20502).
14. The lump ore pretreatment system of claim 10, wherein: each heat medium flow guide device (205) is provided with 1-200 heat medium flow guide outlets (20502).
15. The lump ore pretreatment system according to any one of claims 7 to 9 and 11 to 12, wherein: each heat medium flow guide device (205) is provided with 1-200 heat medium flow guide outlets (20502).
16. The lump ore pretreatment system according to claim 13 or 14, wherein: each heat medium flow guide device (205) is provided with 2-100 heat medium flow guide outlets (20502).
17. The lump ore pretreatment system of claim 15, wherein: each heat medium flow guide device (205) is provided with 2-100 heat medium flow guide outlets (20502).
18. The lump ore pretreatment system as recited in any one of claims 1 to 2, 5, 7 to 9, 11 to 14, and 17, wherein: the heat medium inlet (203) is arranged in the middle or the lower part of the lump ore drying bin (2), and the heat medium outlet (204) is arranged in the upper part or the top of the lump ore drying bin (2).
19. The lump ore pretreatment system of claim 3, wherein: the heat medium inlet (203) is arranged in the middle or the lower part of the lump ore drying bin (2), and the heat medium outlet (204) is arranged in the upper part or the top of the lump ore drying bin (2).
20. The lump ore pretreatment system of claim 4, wherein: the heat medium inlet (203) is arranged in the middle or the lower part of the lump ore drying bin (2), and the heat medium outlet (204) is arranged in the upper part or the top of the lump ore drying bin (2).
21. The lump ore pretreatment system according to any one of claims 2, 5, 7 to 9, 11 to 14, 17, 19 to 20, wherein: the blast furnace (5) is provided with a high-temperature waste gas outlet (501), and the high-temperature waste gas outlet (501) is communicated with a heat medium inlet (203) of the lump ore drying bin (2) through a heat medium conveying pipeline (L0).
22. The lump ore pretreatment system of claim 3, wherein: the blast furnace (5) is provided with a high-temperature waste gas outlet (501), and the high-temperature waste gas outlet (501) is communicated with a heat medium inlet (203) of the lump ore drying bin (2) through a heat medium conveying pipeline (L0).
23. The lump ore pretreatment system of claim 4, wherein: the blast furnace (5) is provided with a high-temperature waste gas outlet (501), and the high-temperature waste gas outlet (501) is communicated with a heat medium inlet (203) of the lump ore drying bin (2) through a heat medium conveying pipeline (L0).
24. The lump ore pretreatment system as recited in any one of claims 1 to 2, 5, 7 to 9, 11 to 14, 17, 19 to 20, 22 to 23, wherein: the sieve mesh size of the sieving device (4) is 5-30 mm; and/or
And a moisture detection device (7) is arranged at a dried material outlet (202) of the lump ore drying bin (2).
25. The lump ore pretreatment system of claim 3, wherein: the sieve mesh size of the sieving device (4) is 5-30 mm; and/or
And a moisture detection device (7) is arranged at a dried material outlet (202) of the lump ore drying bin (2).
26. The lump ore pretreatment system of claim 4, wherein: the sieve mesh size of the sieving device (4) is 5-30 mm; and/or
And a moisture detection device (7) is arranged at a dried material outlet (202) of the lump ore drying bin (2).
27. The lump ore pretreatment system of claim 24, wherein: the sieve mesh size of the screening device (4) is 5-10 mm.
28. The lump ore pretreatment system of claim 25 or 26, wherein: the sieve mesh size of the screening device (4) is 5-10 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120610125.1U CN215288920U (en) | 2021-03-25 | 2021-03-25 | Lump ore pretreatment system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120610125.1U CN215288920U (en) | 2021-03-25 | 2021-03-25 | Lump ore pretreatment system |
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| CN215288920U true CN215288920U (en) | 2021-12-24 |
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2021
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