CN212894786U - Three-stage iron particle recovery device suitable for iron bath method smelting reduction process - Google Patents
Three-stage iron particle recovery device suitable for iron bath method smelting reduction process Download PDFInfo
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- CN212894786U CN212894786U CN202021056895.8U CN202021056895U CN212894786U CN 212894786 U CN212894786 U CN 212894786U CN 202021056895 U CN202021056895 U CN 202021056895U CN 212894786 U CN212894786 U CN 212894786U
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Abstract
The utility model provides a tertiary recovery unit of iron grain suitable for iron bath method smelting reduction process, relates to iron grain recovery unit technical field, including the sluiceway that the upset set up, the exit linkage of sluiceway has the granulation tower, and the top of granulation tower is equipped with the exhaust chimney, and the exit linkage of granulation tower has the dehydrator, is equipped with slag notch, drainage mouth and sewage mouth on the dehydrator, and the slag notch is connected with magnetic separation device through conveying mechanism. The utility model solves the problems that the water pool needs to be dug and built in the traditional technology, and the equipped travelling crane does not stop to dig slag in the pool, thereby consuming electric energy and manpower; and the generated steam easily influences the sight of workers above, so that the problem of potential safety hazard exists.
Description
Technical Field
The utility model relates to an iron shot recovery unit technical field, concretely relates to tertiary recovery unit of iron shot suitable for iron bath method melting reduction technology.
Background
The HIsmelt reduction iron-smelting process is a smelting process in which non-coking coal is used as main energy source, iron ore powder and other raw materials are directly used, and iron oxide is reduced into metallic iron by carbon in a high-temperature molten state. The method does not use coke, sinter and pellet, reduces the emission of CO2, NOx and dioxin, has the advantages of short process flow, high utilization efficiency of resources and energy, small environmental pollution and the like, has wide application prospect, and is a hotspot of iron-making industry research and a metallurgical leading-edge technology.
Different from the traditional blast furnace, the HIsmelt reduction furnace is provided with a front-mounted tapping furnace for continuous tapping, and a special slag hole is arranged in a transition zone (also called a slag zone) of the SRV furnace. However, the molten pool is in continuous disturbance in the transition region due to the gushing caused by the reaction of the raw fuel in the molten iron pool, and iron in the slag mainly exists in the form of iron simple substance, which affects the sufficient separation of the slag and iron, so a large amount of molten iron is mixed in the slag tapping process, and the iron content in the slag reaches 10% according to the production data of the original Australian KWWINANA production plant. Assuming 50 million tons of iron are produced annually, with an iron slag quantity of 430kg, 22 million tons of slag will be produced annually, which will contain 2.2 million tons of iron. In the original HIsmelt process design, the slag is treated in a dry slag discharging mode, namely, high-temperature slag flowing out from a blast furnace taphole is directly placed into a dry slag pit paved with a layer of river sand, then water is discharged into the dry slag pit to cool the high-temperature slag, and finally the slag in the dry slag pit is conveyed to an external site by using transportation tools such as automobiles and the like, so that a large amount of pig iron is solidified along with the slag, and cannot be effectively recovered, and a large amount of pig iron resources are wasted.
The existing iron particle recovery device is characterized in that slag flows into a water tank of water-quenched slag through a chute for water quenching, liquid slag is changed into granular slag, the granular slag is transported to a slag dropping bin through a slag transporting belt conveyor, and iron particles are obtained through magnetic separation;
firstly, the method is used for digging a deep and large water tank according to the process requirements, and is provided with a high-power running machine which does not stop to dig slag from the water tank, so that a large amount of electric energy and labor cost are consumed, and the iron particle screening efficiency and the selection rate are lower.
Secondly, because the pond carries out the slag shrend ceaselessly, the temperature can appear too high, and the too big phenomenon of hot steam, and in the actual motion, steam can rush to the platform of slagging tap on the second floor of electric stove, and the workman's of fuzzy slagging tap sight influences the operation, has certain potential safety hazard.
In view of the above, the prior art is obviously inconvenient and disadvantageous in practical use, and needs to be improved.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model provides a three-stage iron particle recovery device suitable for the iron bath method melting reduction process, which is used for solving the problems that a water pool needs to be dug and built in the traditional technology, and the traveling crane is equipped to dig slag in the pool without stopping the machine, thereby consuming electric energy and manpower; and the generated steam easily influences the sight of workers above, so that the problem of potential safety hazard exists.
In order to achieve the above object, the utility model provides a following technical scheme:
the utility model provides a tertiary recovery unit of iron grain suitable for iron bath method smelting reduction process, is including the sluiceway that the upset set up, the exit linkage in sluiceway has the granulation tower, the top of granulation tower is equipped with the exhaust chimney, the exit linkage in granulation tower has the dehydrator, be equipped with slag notch, drainage mouth and sewage mouth on the dehydrator, the slag notch is connected with magnetic separation device through conveying mechanism.
As an optimized scheme, the conveying mechanism comprises a first conveying belt connected with the slag outlet and a second conveying belt connected with the first conveying belt.
As an optimized scheme, the water filtering port is connected with a reservoir, and the reservoir is connected with the slag flushing ditch.
As an optimized scheme, a water supply pump is further arranged in the water storage tank and connected with the slag flushing ditch.
As an optimized scheme, a flushing water tank is further arranged between the water supply pump and the slag flushing channel.
As an optimized scheme, a water replenishing pipe is further connected in the water storage tank.
As an optimized scheme, the sewage port is connected with a first sedimentation tank and a second sedimentation tank in parallel, the first sedimentation tank and the second sedimentation tank are respectively connected with a pneumatic elevator, the outlet of the pneumatic elevator is also connected with a screw elevator, and the screw elevator is connected with the first conveying belt.
As an optimized scheme, the magnetic separation device is provided with a slag iron outlet and a waste slag outlet.
As an optimized scheme, the magnetic separation device is a gravity magnetic separator.
As an optimized scheme, the overturning angle of the slag sluiceway is 15-60 degrees.
Compared with the prior art, the beneficial effects of the utility model are that:
the slag flushing channel can be tilted, so that the slag speed can be adjusted at any time according to use, and the safety is improved;
the granulation tower collects the steam generated in the treatment process, and a chimney at the top of the granulation tower discharges the high-temperature steam into the air, so that the danger caused by the high-temperature steam is avoided; the dehydrator separates water and slag, filtered water enters the reservoir and is continuously used through the water supply pump, and the water cost is saved; a conveying belt is added, so that the travelling crane which runs for 24 hours does not need to be used for grabbing the water pool granulated slag, and the travelling crane cost is saved; the safety is ensured, the efficiency is improved, and the energy consumption and the labor cost of the water quenching slag working section are reduced; the stability in the working process is improved; the parts are few, the working procedure is simple and convenient, and the failure rate is low; the structure is simple, and the service life is long; simple and convenient operation and control, easy large-scale manufacture and installation and wide application range.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
Fig. 1 is a schematic structural view of the present invention;
in the figure: 1-flushing a slag runner; 2-a granulation tower; 3-an exhaust chimney; 4-a dehydrator; 5-a slag outlet; 6-water filtering port; 7-a sewage port; 8-a first conveyor belt; 9-a second conveyor belt; 10-a magnetic separation device; 11-a first sedimentation tank; 12-a second sedimentation tank; 13-pneumatic hoist; 14-a water reservoir; 15-water supply pump; 16-flushing a water tank; 17-water supply pipe.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1, the three-stage iron granule recovery device suitable for the iron bath smelting reduction process comprises a slag flushing channel 1 which is arranged in an overturning manner, wherein an outlet of the slag flushing channel 1 is connected with a granulating tower 2, an exhaust chimney 3 is arranged at the top of the granulating tower 2, an outlet of the granulating tower 2 is connected with a dehydrator 4, the dehydrator 4 is provided with a slag outlet 5, a water filtering opening 6 and a sewage opening 7, and the slag outlet 5 is connected with a magnetic separation device 10 through a conveying mechanism.
Wherein the slag sluiceway 1 can be installed through a common support frame with an adjustable inclination angle, and the inclination angle can be conveniently adjusted.
The conveying mechanism comprises a first conveying belt 8 connected with the slag outlet 5 and a second conveying belt 9 connected with the first conveying belt 8, wherein the first conveying belt 8 and the second conveying belt 9 are divided into a north-south belt and a east-west belt in actual use.
The water filtering port 6 is connected with a water storage tank 14, and the water storage tank 14 is connected with the slag sluiceway 1.
A water supply pump 15 is also arranged in the water storage tank 14, and the water supply pump 15 is connected with the slag flushing ditch 1.
A flushing water tank 16 is also arranged between the water supply pump 15 and the slag flushing ditch 1.
The water reservoir 14 is also connected with a water replenishing pipe 17.
The sewage port 7 is connected with a first sedimentation tank 11 and a second sedimentation tank 12 in parallel, the first sedimentation tank 11 and the second sedimentation tank 12 are respectively connected with a pneumatic elevator 13, the outlet of the pneumatic elevator 13 is also connected with a screw elevator, and the screw elevator is connected with a first conveying belt 8.
The magnetic separation device 10 is provided with a slag iron outlet and a waste slag outlet.
The magnetic separation device 10 is a gravity magnetic separator.
The overturning angle of the slag sluiceway 1 is 15-60 degrees.
The device is divided into three stages of recovery:
the first stage is that liquid slag flows into a granulating tower 2 after being impacted and cooled by a flushing water tank 16 water in a flushing slag groove 1, the flushing slag groove 1 is an operable tipping device, is crushed by a water-cooled granulating wheel in the granulating tower 2, and is further water-quenched into water slag;
the second stage is that the water slag enters a dehydrator 4 for dehydration, the filtered water enters a water storage tank 14 and is pressurized by a water supply pump 15 to continuously enter a granulating tower 2 for use, the sewage enters a sedimentation tank, the slag in the sewage is screened out by a pneumatic elevator 13 and a spiral slag extractor and is transported to a magnetic separation device 10 through a belt;
and in the third stage, the dewatered slag is conveyed to a magnetic separation device 10 through a belt, and iron particles are magnetically separated.
The tilting slag runner 1 has a tilting angle of 15-60 degrees, is controlled by an operation platform, when liquid slag flows into the slag runner 1, the flow rate of the slag is controlled by controlling the tilting angle of the slag runner 1, and simultaneously, water in the water storage tank 14 is pressurized by the water supply pump 15 to carry out stamping and rapid cooling on the slag in the slag runner 1, the slag flushing water amount is controlled to be about 1100m3/h, and the stamping pressure is 0.25 Mpa;
the granulation tower 2 is provided with a spray gun for spraying compressed air and high-pressure water curtain, a water-cooled granulation wheel rotating at high speed and a chimney for discharging high-temperature steam. The slag in the slag flushing ditch 1 enters a granulating tower 2, the granulating tower 2 impacts and shears the slag by high-speed sprayed compressed air and a high-pressure water curtain, then the slag is crushed by a water-cooled granulating wheel rotating at a high speed, and the generated high-temperature steam is discharged into the air through a chimney on the upper part of the granulating tower 2;
a dehydrator 4, wherein a dehydration rotary drum provided with a sieve plate is arranged in the dehydrator. The water slag enters a dehydrator from a granulation tower, is filtered by a dehydration rotary drum provided with a sieve plate and is sent to a slag conveying belt conveyor to realize water slag separation, the rotating speed of the dehydrator is 1-3r/min during normal production, and the water slag can be adjusted according to the slag flow and the water content of slag falling onto the dehydration rotary drum; the filtered water enters a reservoir through the bottom of the dehydrator and is pressurized by a water supply pump for secondary use, and the sewage enters a sedimentation tank; the model of the dehydrator is shown in table 1;
TABLE 1 dehydrator model
| Model number | Size of | Rotational speed | Maximum dewatering capacity | Frequency conversion speed regulation motor power | Speed reducer model |
| BT-III | φ6000x2400mm | 1-3r/min | 8t/min | 90KW | ZSY315-28-III |
The pneumatic lifter comprises a suction fan, a motor, a settling chamber, a discharge pipe and the like. The slag in the sewage is sucked into a settling chamber through a suction fan, the water on the surface of the slag flows back into a sedimentation tank through the settling chamber, the slag reaches a spiral elevator through a discharge pipe, the pressure behind a gas regulating valve of the pneumatic elevator is 0.1-0.2Mpa, and the total flow of compressed air of the two sets of pneumatic elevators is 20-30m3Min; the type of the pneumatic hoist is shown in a table 2;
TABLE 2 pneumatic hoist model
The spiral elevator consists of mainly spiral shaft, spiral blades, U-shaped groove, water storing tank, collecting stabilizer, support, liquid inlet and outlet, driving unit, etc. Slag in the pneumatic elevator flows into the water storage tank from a liquid inlet pipe at the top of the spiral elevator, slag particles are deposited at the bottom of the water storage tank under the action of self weight and the action of a capture flow stabilizing plate, a spiral shaft which rotates slowly drives blades to continuously push the slag along an inclined U-shaped groove, and the slag particles are discharged through a slag discharge port on the U-shaped groove along with the upward lifting of the slag and are sent to a slag conveying belt conveyor; the model of the spiral elevator is shown in a table 3;
TABLE 3 model of spiral elevator
| Model number | Processing capacity |
| φ1000*7000 | 700-1500t/d |
A slag conveying belt conveyor comprises a south belt and a north belt and an east belt. Conveying the slag separated by the dehydrator and the slag separated by the sedimentation tank to a magnetic separation device through a slag conveying belt conveyor, and magnetically separating iron particles; the model of the slag-conveying belt conveyor is shown in a table 4;
TABLE 4 model of slag-conveying belt conveyer
| Model number | Bandwidth of | Maximum delivery volume | Speed of belt | Motor power | Voltage of motor |
| DSJ80/40/2x40 | 800mm | 400t/h | 2m/s | 40x2KW | 380/660V |
The magnetic separation device utilizes gravity to carry out magnetic separation to screen out iron particles; the model of the magnetic separation device is shown in Table 5.
TABLE 5 magnetic separation device model
| Model number | Bandwidth of | Rotational speed | Width of feed | Throughput of treatment |
| 3PC-600 | 600mm | 22-38r/min | 300mm | 120-800kg/h |
Other structures in the above-mentioned apparatuses are common in the daily life, belong to the common general knowledge of those skilled in the art, and are not innovative in the present solution, so that the detailed structure is not described herein.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.
Claims (10)
1. The utility model provides a tertiary recovery unit of iron grain suitable for iron bath method smelting reduction technology which characterized in that: the slag flushing device comprises a slag flushing channel (1) which is arranged in a turnover mode, wherein an outlet of the slag flushing channel (1) is connected with a granulating tower (2), an exhaust chimney (3) is arranged at the top of the granulating tower (2), a dehydrator (4) is connected with an outlet of the granulating tower (2), a slag hole (5), a water filtering hole (6) and a sewage hole (7) are formed in the dehydrator (4), and the slag hole (5) is connected with a magnetic separation device (10) through a conveying mechanism.
2. The three-stage iron particle recovery device suitable for the iron bath smelting reduction process according to claim 1, characterized in that: conveying mechanism include with first conveyor belt (8) that slag notch (5) are connected and with second conveyor belt (9) that first conveyor belt (8) are connected.
3. The three-stage iron particle recovery device suitable for the iron bath smelting reduction process according to claim 1, characterized in that: the water filtering opening (6) is connected with a water storage tank (14), and the water storage tank (14) is connected with the slag flushing ditch (1).
4. The three-stage iron particle recovery device suitable for the iron bath smelting reduction process according to the claim 3, characterized in that: still be equipped with feed water pump (15) in cistern (14), feed water pump (15) are connected sluiceway (1).
5. The three-stage iron particle recovery device suitable for the iron bath smelting reduction process according to claim 4, wherein: a flushing water tank (16) is also arranged between the water supply pump (15) and the slag flushing ditch (1).
6. The three-stage iron particle recovery device suitable for the iron bath smelting reduction process according to the claim 3, characterized in that: and a water replenishing pipe (17) is also connected in the water storage tank (14).
7. The three-stage iron particle recovery device suitable for the iron bath smelting reduction process according to claim 2, characterized in that: the sewage outlet (7) is connected with a first sedimentation tank (11) and a second sedimentation tank (12) in parallel, the first sedimentation tank (11) and the second sedimentation tank (12) are respectively connected with a pneumatic elevator (13), the outlet of the pneumatic elevator (13) is also connected with a screw elevator, and the screw elevator is connected with the first conveying belt (8).
8. The three-stage iron particle recovery device suitable for the iron bath smelting reduction process according to claim 1, characterized in that: and a slag iron outlet and a waste slag outlet are arranged on the magnetic separation device (10).
9. The three-stage iron particle recovery device suitable for the iron bath smelting reduction process according to claim 8, characterized in that: the magnetic separation device (10) is a gravity magnetic separator.
10. The three-stage iron particle recovery device suitable for the iron bath smelting reduction process according to claim 1, characterized in that: the overturning angle of the slag sluiceway (1) is 15-60 degrees.
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| CN202021056895.8U CN212894786U (en) | 2020-06-10 | 2020-06-10 | Three-stage iron particle recovery device suitable for iron bath method smelting reduction process |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Hebei Xinggang Technology Co.,Ltd. Assignor: SHANDONG MOLONG PETROLEUM MACHINERY Co.,Ltd. Contract record no.: X2023980034949 Denomination of utility model: A three-level iron particle recovery device suitable for iron bath melting reduction process Granted publication date: 20210406 License type: Common License Record date: 20230423 |
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| EE01 | Entry into force of recordation of patent licensing contract |