CN217665374U - Electric furnace slag treatment device - Google Patents
Electric furnace slag treatment device Download PDFInfo
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- CN217665374U CN217665374U CN202221704664.2U CN202221704664U CN217665374U CN 217665374 U CN217665374 U CN 217665374U CN 202221704664 U CN202221704664 U CN 202221704664U CN 217665374 U CN217665374 U CN 217665374U
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Abstract
The utility model relates to an electric furnace slag processing apparatus, including quenching and tempering subsystem, the broken system of roll-in, magnetic separation system and pair roller flour mill, quenching and tempering subsystem, the broken system of roll-in, magnetic separation system loop through the dispatch overhead traveling crane operation nature and connect, the magnetic separation system passes through band conveyer circulation connection with pair roller flour mill. The utility model has the advantages of the treatment effeciency is high, degree of automation is high, the electric furnace slag value is high, reduce discharging and fall carbon, can realize the synchronous recovery of slag, iron, the heat of electric furnace slag, and economic benefits is good, and environmental benefit is high.
Description
Technical Field
The utility model relates to an electric furnace slag processing technology field particularly, relates to an electric furnace slag processing apparatus that iron and steel enterprise's production process produced.
Background
The crude steel yield exceeds 10 hundred million tons in 2021 years in China, and about 150 kilograms of steel slag is produced as a byproduct while each ton of steel is produced. The electric furnace slag is one of the smelting slag in the steel industry, and has higher recovery value as the converter steel slag. In addition, with the implementation of the double-carbon strategy in China and the annual increase of the amount of scrap iron, the short-flow process of electric furnace smelting gradually replaces the long-flow process of a blast furnace-converter and the like, and the yield of the electric furnace slag is also increased sharply.
At present, no special electric furnace slag treatment and resource utilization process exists in China, and most steel enterprises treat electric furnace slag and steel slag by the same treatment process, such as a hot-seal method, a hot-splashing method, a roller method, a wind quenching method and the like. However, compared with converter steel slag, the special electric furnace smelting process has the phenomena of larger slag blocks, higher hardness, poorer magnetic separation effect and the like, so that the energy consumption of each treatment process is higher, the equipment is seriously abraded, mechanical failure often occurs, the recovery efficiency and economic benefit of the electric furnace slag are extremely low, and the resource value cannot be really exerted. In addition, the electric furnace slag also has the stability problem of the converter steel slag, and many downstream enterprises dare not to consume the electric furnace slag on a large scale, so that the electric furnace slag tailings face great market pressure.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides an electric furnace slag treatment device to solve the problem that the electric furnace slag treatment land among the prior art occupies that volume is big, environmental pollution and wasting of resources.
The utility model relates to an electric furnace slag processing apparatus, including quenching and tempering subsystem, roll-in broken system, magnetic separation system and pair roller pulverizer, quenching and tempering subsystem, roll-in broken system, magnetic separation system loop through the dispatch overhead traveling crane operation nature and connect, the magnetic separation system passes through band conveyer circulation connection with pair roller pulverizer.
Further, the quenching and tempering subsystem comprises a quenching and tempering agent batching system, a stirrer and an online quenching and tempering system, wherein the discharging end of the quenching and tempering agent batching system is connected with the feeding end of the stirrer through a belt conveyor, the discharging end of the stirrer is respectively connected with the discharging end of the electric furnace slag and is connected with the feeding end of the online quenching and tempering system, and the discharging end of the online quenching and tempering system is connected with the rolling and crushing system.
Further, quenching and tempering agent feed system includes a plurality of feed bins, band conveyer, power device, quality induction system and control system, the feed chute has at the feed bin top, and the vibrator is installed to the bottom, and band conveyer upper portion is located to a plurality of feed bins.
Further, the on-line tempering system comprises a tempering agent bin, a conveying device, a distributing device and a slag tank, wherein a bottom discharge port of the tempering agent bin is communicated with the conveying device, a discharge end of the conveying device is connected with the distributing device, and a discharge end of the distributing device and a discharge end of the electric furnace slag are synchronously connected with the slag tank.
Furthermore, a vibrator is arranged in the middle of the tempering agent bin, the diameter of a bottom discharge port is 80-250mm, the conveying device is a speed-controllable spiral discharging machine, the tail part of the speed-controllable spiral discharging machine is connected with a distributing device, the distributing device is a high-temperature-resistant steel pipe with an adjustable angle, and the angle range is 30-150 degrees.
Further, the rolling crushing system comprises a forced rolling crusher capable of rotating forward and backward, a high-temperature-resistant and wear-resistant crushing bed, a water beating device and a closed cover, wherein the forced rolling crusher, the high-temperature-resistant and wear-resistant crushing bed and the water beating device are arranged in the closed cover.
Further, the forced rolling crusher is in pin-tooth rack transmission, a traveling driving device of the forced rolling crusher is in alternating-current variable-frequency speed regulation, the high-temperature-resistant and wear-resistant crushing bed is made of Q235 type wear-resistant steel and is 60-120mm thick, a slag lining layer is laid on the upper portion of the high-temperature-resistant and wear-resistant crushing bed and is mixed by cobblestones and electric furnace slag, and the thickness of the slag lining layer is 40-80mm.
Further, the magnetic separation system includes magnetic separation band conveyer, belt magnet separator, vibration feeding sieve, electric control and power device, and the belt magnet separator is equipped with the feed inlet, and the top that the belt magnet separator is located the magnetic separation district is equipped with the slag steel export that the diameter is 50mm, magnetic separation band conveyer connects slag steel export and pair roller pulverizer.
Further, the pair-roller pulverizer comprises a rotary roller, a separating sieve, a feeding hole, a discharging hole and a grinding belt conveyor, wherein the magnetic separation belt conveyor is connected with a slag steel outlet of the magnetic separation system and the feeding hole of the pair-roller pulverizer, and the grinding belt conveyor is connected with the discharging hole of the pair-roller pulverizer and the feeding hole of the magnetic separation system.
Furthermore, the plurality of bins contain the raw materials of the quenching and tempering agent, such as quartz, alumina and coal gangue, and the quality sensing device is electrically connected with the control system.
The utility model discloses based on electric furnace slag physicochemical characteristic, at first adopt the quenching and tempering method and utilize electric furnace slag self heat to carry out the quenching and tempering to electric furnace slag, then carry out processes such as breakage, magnetic separation, grinding, promote the output of bold iron slag and magnetic separation powder by a wide margin, obtain fine grit and the good electric furnace slag tailings of stability simultaneously.
The utility model has the advantages of the treatment effeciency is high, degree of automation is high, the electric furnace slag use value is high, reduce discharging and fall carbon, not only can realize the synchronous recovery of slag, iron, the heat of electric furnace slag, have higher economic benefits, still can reduce piling up of electric furnace slag by a wide margin, environmental benefit is high.
The utility model discloses a quenching and tempering subsystem, broken system of roll-in, magnetic separation system loop through the dispatch overhead traveling crane operation nature and connect, and the magnetic separation system passes through band conveyer cyclic connection with the pair roller flour mill, have realized that the electric furnace slag carries out quenching and tempering, breakage, magnetic separation, grinding process in proper order, through tentatively screening the bold slag steel and the fine particle magnetic separation powder of secondary screening of high value, have improved the electric furnace slag treatment effect.
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 prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic view of an electric furnace slag processing device provided by the present invention.
Description of the reference numerals:
1-a modifying agent batching system, 2-a stirrer, 3-an online modifying system, 4-a rolling crushing system, 5-a magnetic separation system and 6-a pair of roller flour mills.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", 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 and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Referring to fig. 1, the utility model provides an electric furnace slag processing apparatus, including quenching and tempering subsystem, roll-in broken system 4, magnetic separation system 5 and pair roller pulverizer 6, quenching and tempering subsystem, roll-in broken system 4, magnetic separation system 5 loop through the dispatch overhead traveling crane operation nature and connect, magnetic separation system 5 passes through band conveyer cyclic connection with pair roller pulverizer 6.
The tempering agent batching system 1, the stirrer 2 and the online tempering system 3 are sequentially connected through a conveying belt; the magnetic separation system 5 is connected with a double-roller flour mill 6 through a conveying belt; the online tempering system 3, the rolling crushing system 4 and the magnetic separation system 5 realize the continuous operation of tempering, crushing and magnetic separation of the electric furnace slag by dispatching a crown block.
The tempering agent batching system mainly comprises a belt conveyor, a storage bin, a power device, a quality sensing device and a control system and is used for preparing the tempering agent with required components; the top of the storage bin is provided with a feeding groove, and the bottom of the storage bin is provided with a vibrator; the accuracy of the mass sensing device is 0.002-0.005.
The on-line tempering system mainly comprises a tempering agent bin, a conveying device, a distributing device, a slag tank and the like, and is used for ensuring that the tempering agent and slag flow can synchronously enter the slag tank to homogenize the slag tank.
Wherein, a vibrator is arranged in the middle of the hardening and tempering agent bin, and the bottom discharging aperture is 80-250mm; the conveying device is a speed-controllable spiral discharging machine, and the tail part of the conveying device is connected with the distributing device; the material distributing device is a high-temperature resistant steel pipe with an adjustable angle, and the angle range is 30-150 degrees.
The rolling crushing system mainly comprises a forced rolling crusher capable of rotating forward and backward, a high-temperature-resistant wear-resistant crushing bed, a water beating device and a closed cover, and is used for realizing rapid cooling of electric furnace slag and crushing of large slag.
The positive and negative rotating forced rolling crusher adopts pin-tooth rack transmission, and the walking driving device adopts alternating current variable frequency speed regulation so as to achieve the purposes of front and back crushing, low energy consumption and forced slag breaking; the high-temperature-resistant wear-resistant crushing bed is made of Q235 type wear-resistant steel, and the thickness of the crushing bed is 60-120mm; a slag bedding layer is laid on the upper portion of the crushing bed, the slag bedding layer is formed by mixing cobblestones and electric furnace slag, the thickness of the slag bedding layer is 40-80mm, and the service life of the crushing bed is prolonged. The magnetic separation system mainly comprises a belt conveyor, a belt magnetic separator, a vibration feeding sieve, an electric control and power device and is used for primarily screening high-value large slag steel and secondarily screening fine particle magnetic separation powder; the belt type magnetic separator is provided with a feed inlet, is positioned above the magnetic separation area and is provided with a slag steel outlet with the diameter of 50 mm. The pair roller pulverizer is provided with a rotary roller wheel, a separating screen, a feeding hole and a discharging hole; the bin outlet is connected with band conveyer, carries the grinding material to magnetic separation system and carries out the secondary screening to ensure magnetic separation material and sieve as far as possible.
Wherein the raw materials of the hardening and tempering agent are a mixture of quartz, alumina and coal gangue; the mixing time of the stirrer is 30min, the discharging time of the spiral discharging device is 4min, and the alkalinity of the quenched and tempered electric furnace slag is 1.8; the average water pumping speed is 0.013m3/t.min, the slag tapping temperature of the electric furnace slag is 120 ℃, and the crushing operation time is 110min; the granularity of the once screened large-block slag steel exceeds 50mm, the average granularity of the ground electric furnace slag is 12mm, the yield of the magnetic separation material of the electric furnace slag after hardening and tempering is 52%, and the f-CaO content of the electric furnace slag tailings is lower than 0.84%.
The electric furnace slag treatment by adopting the device comprises the following steps:
(1) According to the components of the tempering agent required by the tempering of the electric furnace slag, the tempering agent batching system 1 discharges various raw materials to a belt conveyor below in proportion, a stirrer 2 is adopted to uniformly mix the tempering raw materials, and the uniformly mixed tempering agent is transferred to a storage bin of the tempering agent in the online tempering system 3.
(2) The tempering agent falls to the controllable-speed spiral discharging machine from the storage bin in the online tempering system 3, and the conveying of the tempering agent and the operation of adding the tempering agent in cooperation with the slag discharging speed of the electric furnace slag are completed by adopting the controllable-speed spiral discharging machine and the high-temperature-resistant steel pipe, so that the high-efficiency tempering of the electric furnace slag is realized.
(3) The tempered electric furnace slag is conveyed to a rolling crushing system 4, the electric furnace slag is poured onto a high-temperature-resistant and wear-resistant crushing bed, a forced rolling crusher capable of rotating forward and backward is started to perform crushing operation, a water pumping device is started to perform water pumping and crushing operation at the same time, the water pumping and crushing operation are stopped when the electric furnace slag is cooled to a normal temperature state, and the rolling crusher is controlled to push the steel electric furnace to a slag discharge port to finish slag discharging operation.
(4) And conveying the electric furnace slag cooled to the normal temperature to a magnetic separation system 5, screening large slag steel by using a belt magnetic separator and a vibration feeding sieve, conveying the rest electric furnace slag to a double-roller pulverizer 6 through a belt conveyor, grinding for a certain time to obtain electric furnace slag powder with a certain granularity, conveying the electric furnace slag powder to the magnetic separation system 5 again for secondary screening operation, and respectively obtaining magnetic separation powder and electric furnace slag tailing powder.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. The utility model provides an electric furnace slag processing apparatus, includes quenching and tempering subsystem, roll-in broken system (4), magnetic separation system (5) and pair roller pulverizer (6), its characterized in that, quenching and tempering subsystem, roll-in broken system (4), magnetic separation system (5) loop through the operation nature of dispatch overhead traveling crane and connect, magnetic separation system (5) and pair roller pulverizer (6) are through band conveyer circular connection, the quenching and tempering subsystem includes quenching and tempering agent feed system (1), mixer (2), online quenching and tempering system (3), quenching and tempering agent feed system (1) discharge end with mixer (2) pan feeding end passes through the band conveyer and is connected, online quenching and tempering system (3) pan feeding end is connected respectively to mixer (2) discharge end and electric furnace slag discharge end, roll-in broken system (4) is connected to online quenching and tempering system (3) discharge end, broken system is including compulsory nature breaker, high temperature resistant wear-resisting roll-in rolling device and closed cover, compulsory nature roll-in rolling breaker, high temperature resistant broken bed, water beating device locate in closed cover, magnetic separation system (5) includes that positive and negative rotation compulsory nature roll-in the export of band conveyer roll-in magnetic separation machine, magnetic separation power belt conveyor roll-type crusher, magnetic separation machine, magnetic separation belt conveyor roll-in the export of magnetic separation steel strip, magnetic separation steel strip mill and the export is equipped with the magnetic separation steel strip, and is equipped with the export of magnetic separation steel strip mill, and is 50, and is connected in the export of magnetic separation of the magnetic separation steel strip.
2. The electric furnace slag processing device according to claim 1, wherein the conditioner dosing system (1) comprises a plurality of bins, a belt conveyor, a power device, a quality sensing device and a control system, the top of each bin is provided with a feeding chute, the bottom of each bin is provided with a vibrator, and the bins are arranged on the upper part of the belt conveyor.
3. The electric furnace slag processing device according to claim 1, wherein the on-line tempering system (3) comprises a tempering agent bin, a conveying device, a distributing device and a slag tank, wherein a discharge port at the bottom of the tempering agent bin is communicated with the conveying device, a discharge end of the conveying device is connected with the distributing device, and a discharge end of the distributing device and a discharge end of the electric furnace slag are synchronously connected with the slag tank.
4. The electric furnace slag processing device according to claim 3, wherein the vibrator is arranged in the middle of the hardening and tempering agent bin, the diameter of the bottom discharge port is 80-250mm, the conveying device is a speed-controllable spiral discharging machine, the tail part of the speed-controllable spiral discharging machine is connected with the distributing device, the distributing device is a high-temperature-resistant steel pipe with an adjustable angle, and the angle range is 30-150 degrees.
5. The electric furnace slag processing device according to claim 3, wherein the forced rolling crusher is pin-tooth rack drive, the traveling drive device of the forced rolling crusher is AC variable frequency speed regulation, the high temperature resistant and wear resistant crushing bed is made of Q235 type wear resistant steel and has a thickness of 60-120mm, a slag layer is laid on the upper part of the high temperature resistant and wear resistant crushing bed, and the thickness of the slag layer is 40-80mm.
6. The electric furnace slag processing device according to claim 1, wherein the double-roller pulverizer (6) comprises a rotary roller, a separating screen, a feeding hole, a discharging hole and a pulverizing belt conveyor, the magnetic belt conveyor connects the slag steel outlet of the magnetic separation system (5) with the feeding hole of the double-roller pulverizer (6), and the pulverizing belt conveyor connects the discharging hole of the double-roller pulverizer (6) with the feeding hole of the magnetic separation system (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221704664.2U CN217665374U (en) | 2022-07-04 | 2022-07-04 | Electric furnace slag treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221704664.2U CN217665374U (en) | 2022-07-04 | 2022-07-04 | Electric furnace slag treatment device |
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| CN217665374U true CN217665374U (en) | 2022-10-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202221704664.2U Active CN217665374U (en) | 2022-07-04 | 2022-07-04 | Electric furnace slag treatment device |
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| CN (1) | CN217665374U (en) |
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- 2022-07-04 CN CN202221704664.2U patent/CN217665374U/en active Active
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