CN218710606U - Continuous steel slag reduction modification equipment - Google Patents
Continuous steel slag reduction modification equipment Download PDFInfo
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- CN218710606U CN218710606U CN202221737615.9U CN202221737615U CN218710606U CN 218710606 U CN218710606 U CN 218710606U CN 202221737615 U CN202221737615 U CN 202221737615U CN 218710606 U CN218710606 U CN 218710606U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
Abstract
The utility model relates to a continuous steel slag reduction modification device, which relates to the field of steel slag treatment and comprises a slag pot tipping device, a solid steel slag crushing device and a steel slag melting device; the slag pot tipping device comprises a fixing mechanism, a tipping mechanism, a weighing sensor and a temperature measuring instrument, and is used for pouring the steel slag in the slag pot into the steel slag melting device; the weighing sensor and the temperature measuring instrument are used for detecting the weight and the temperature of the steel slag and feeding back the weight and the temperature to the control end; the solid steel slag crushing device is used for crushing solid steel slag on the surface of the slag tank; the steel slag melting device comprises a melting furnace, wherein a steel slag feeding port, a reactant feeding port, a gas stirring port, an iron outlet, a slag outlet and a plurality of heating electrodes located at different positions are arranged on the melting furnace. The steel slag melting device of the utility model can continuously receive slag, shorten the steel slag treatment process and improve the treatment efficiency.
Description
Technical Field
The utility model relates to a slag treatment field especially relates to a continuous type slag reduction modification equipment.
Background
The steel slag is a waste produced in the process of converter or electric furnace steel making, the yield is generally about 10-15% of the yield of crude steel, and the steel slag contains about 10% of metallic iron resources besides dicalcium silicate and tricalcium silicate which have similar components with cement. The slag tapping temperature of the steel slag is above about 1400 ℃, and the steel slag is rich in huge heat.
At present, steel slag treatment technologies mainly comprise a hot splashing treatment process, a tank type hot stuffiness process, a pressure hot stuffiness process, a roller method treatment process, an air quenching treatment process, a granulation wheel treatment process, a disc splashing treatment process, a water quenching treatment process and the like, but the processes have some defects and drawbacks which cannot be overcome. Such as: (1) The hot splashing treatment process has the advantages of long treatment period, large occupied area, great environmental pollution, poor steel slag stability, no contribution to resource utilization and no recycling of heat. (2) The links of deslagging, slag skimming and slag discharging in the tank type hot stuffiness process are open, dust cannot be collected, and pollution is serious; the process operation requirement is strict; the equipment and automation degree is low, the number of workers is large, and the labor intensity is high; the heat is not recycled; there is a risk of explosion. (3) The process has the advantages of large investment, large occupied area, necessity of using a pressure container tank, no recycling of heat, explosion risk and high operating rate of a crane matched with a tank crane. (4) the treatment process of the roller method has large investment and high running cost; the equipment is complex, the failure rate is high, and the maintenance difficulty is high; the steel slag treatment rate is low (about 50 percent); the heat is not recycled; there is a risk of explosion. (5) The air quenching treatment process can only treat liquid slag, and the product utilization way for treating the steel slag is narrow. (6) The treatment rate of the granulation wheel treatment process is low (generally about 50 percent); only steel slag with good fluidity can be processed; the equipment is seriously abraded; the gelling property of the processed steel slag is deteriorated, which affects the utilization of the steel slag. (7) the technological slag pan treated by the pan splashing method is easy to deform; the process is complex; the investment and the operation cost are high; the steel slag has poor stability. (8) the treatment rate of the water quenching treatment process is low (50 percent at most); when water quenching is carried out, explosion easily occurs due to improper operation; the utilization way of the processed steel slag is narrow.
In addition, when the treated steel slag is magnetically separated, only the part which can be magnetized can be selected, and a large part of the iron oxide can not be magnetized and still remains in the tailings of the steel slag, thereby causing resource waste. The steel slag tailings after magnetic separation has the defects of low activity, high free calcium oxide content and the like compared with high-furnace slag, so that the utilization rate is very low, most of the steel slag tailings are accumulated to occupy land, and the environment is polluted.
In view of the above situation, some attempts have been made to treat steel slag by using a steel slag reduction modification process, reduce iron oxides in the steel slag, improve the recovery rate and purity of iron, and modify steel slag tailings to improve the activity and stabilize the quality of the steel slag. The existing reduction modification equipment generally comprises that one pot of slag is poured and then reacts once, molten iron and modified steel slag are discharged after the reaction is finished, and then the next pot of steel slag is poured continuously. If the slag tapping frequency of a steel-making workshop is accelerated, waiting is possibly needed, the liquid slag tank is occupied, the liquid slag tank cannot be turned over in time, meanwhile, a large amount of heat is dissipated in the waiting process, and after the liquid slag tank is poured into reduction modification equipment, a large amount of electric energy is needed to be consumed by electrodes to heat the steel slag again.
Based on the reasons, a continuous steel slag reduction modification device needs to be researched, so that the defects in the current steel slag reduction modification technology are overcome, the liquid steel slag is ensured to fall down from time to time and is treated in time, and any slag tapping frequency in a steelmaking workshop is met.
SUMMERY OF THE UTILITY MODEL
Technical problem
In view of this, the technical problem to be solved by the present invention is how to provide a continuous steel slag reduction and modification apparatus.
Solution scheme
For solving the technical problem, the utility model provides a following technical scheme:
the utility model provides a continuous steel slag reduction modification device, wherein the steel slag comprises liquid steel slag or liquid steel slag with partial solid steel slag, and the continuous steel slag reduction modification device comprises a slag tank tipping device, a solid steel slag crushing device and a steel slag melting device;
the slag pot tipping device comprises a fixing mechanism, a tipping mechanism, a weighing sensor and a temperature measuring instrument, wherein the fixing mechanism comprises a clamping part for fixing the slag pot, the tipping mechanism comprises at least two joint arms which are connected in a rotating manner and a driving mechanism for driving the joint arms, and one end of each joint arm is connected with the fixing mechanism and is used for driving the fixing mechanism to tip the slag pot into the slag melting device by driving the joint arms; the weighing sensor and the temperature measuring instrument are used for detecting the weight and the temperature of the steel slag and feeding back the weight and the temperature to the control end;
the solid steel slag crushing device is used for crushing solid steel slag on the surface of the slag tank;
the steel slag melting device comprises a melting furnace, wherein a steel slag inlet, a reactant feeding port, a gas stirring port, a tap hole, a slag hole and a plurality of heating electrodes positioned at different positions are arranged on the melting furnace;
the reactant charging hole is used for charging a reactant;
the heating electrodes are used for heating with different powers at different positions of the melting furnace according to the weight and the temperature of the steel slag and an instruction of a control end;
the steel slag feeding port is used for feeding steel slag into the melting furnace;
the gas stirring port is used for introducing gas to stir molten steel slag;
the height of the tap hole and the slag hole is different, the position of the slag hole, which is positioned in the melting furnace, is higher than that of the tap hole, and the tap hole and the slag hole are used for shunting and discharging reduced iron and reconstructed steel slag.
Further, the melting furnace is provided with a temperature sensor, and the temperature sensor is used for monitoring the temperature in the melting furnace and feeding back to the control end.
Furthermore, the solid steel slag crushing device comprises a horizontal moving device, a telescopic device connected with the horizontal moving device and a slag crushing part connected to the end part of the telescopic device, and the slag crushing part is used for controlling the slag crushing part to crush the solid steel slag on the surface of the slag pot by operating the horizontal moving device and the telescopic device.
Furthermore, the rotation angle of the tipping mechanism is 0-90 degrees.
Furthermore, the tipping mechanism is a frequency conversion control tipping mechanism and is used for enabling the steel slag to be tipped stably.
Further, the device also comprises a feeding device for feeding the reactant into the reactant feeding port, and the feeding device is matched with a metering device.
Furthermore, the steel slag melting device also comprises a slag chute used for guiding the steel slag to enter the steel slag feeding port.
Furthermore, the melting furnace is also provided with a dust removal port, and the dust removal port is used for being connected with a matched dust removal system and removing dust-containing gas generated in the melting device.
Further, the steel slag is selected from one or more of common steel slag, vanadium-titanium steel slag, casting residue and desulphurization slag.
Advantageous effects
(1) The utility model discloses a continuous type slag reduction modification equipment can connect the sediment in succession, fall the sediment in succession, saves slag ladle latency, makes the slag realize the separation of slag-iron in the processing stage, saves subsequent slag magnetic separation process to modify the remaining slag tailings, realize the changing of waste into valuables of slag. The steel slag treatment process is shortened, and the treatment efficiency is improved.
(2) The method for directly treating the high-temperature liquid steel slag saves the electrode heating power consumption of a steel slag melting treatment device, realizes cooling of the steel slag without adopting a water pumping mode, reasonably utilizes the heat of the steel slag, saves water resources, meets the policy of realizing carbon dioxide carbon peak reaching in 2030 years and carbon neutralization in 2060 years in China, realizes green treatment of the steel slag, does not have discharge, realizes organized discharge of dust-containing gas generated in the feeding process after passing through a dust removal system, achieves standard environmental protection, and accords with the national environmental protection policy. Iron in the steel slag is reduced in the treatment process, a steel slag magnetic separation processing line is not required to be built, and the floor area of a factory is reduced. After the steel slag tailings are modified, the activity is improved, the quality is stable, the tailings can be completely utilized, waste materials are changed into valuable materials, and the steel slag tailings are not piled up to occupy land and pollute the environment. The whole process is completed by mechanical equipment from the moment that the steel slag is placed on the slag ladle tipping device to the moment that steel slag products are generated, and the automation level is higher than that of other steel slag treatment processes, so that the labor intensity of workers is reduced, and the labor is saved. The steel slag sent from the steel-making workshop is poured into the steel slag melting treatment device immediately after arriving at the treatment line without waiting, thereby saving time.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood and to make the technical means more comprehensible, and to make the above and other objects, technical features, and advantages of the present invention easier to understand, one or more preferred embodiments are listed below, and the following detailed description is given with reference to the accompanying drawings.
Drawings
One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.
FIG. 1 is a schematic plan view of a process flow of an embodiment of the continuous steel slag reduction and modification apparatus of the present invention.
FIG. 2 is a schematic side sectional view of a process flow of an embodiment of the continuous steel slag reduction and modification apparatus of the present invention.
FIG. 3 is a schematic front sectional view of a process flow of an embodiment of the continuous steel slag reduction modification apparatus of the present invention.
Description of the main reference numbers:
the slag ladle furnace comprises a 1-slag ladle tipping system, a 1-1 fixing mechanism, a 1-2 tipping mechanism, a 2-solid steel slag crushing device, a 2-1 horizontal moving device, a 2-2 telescopic device, a 2-3 slag breaking part, a 3-steel slag melting device, a 3-1 reactant feeding port, a 3-2 electrode, a 3-3 dust removing port, a 3-4 slag discharging port, a 3-5 iron discharging port, a 3-6 steel slag feeding port and a 4-feeding device.
Detailed Description
The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited by the following detailed description.
Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.
Spatially relative terms, such as "under", "below", "lower", "upper", "over", "upper", and the like, may be used herein for convenience in describing the relationship of one element or feature to another element or feature in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the object in use or operation in addition to the orientation depicted in the figures. For example, if the items in the figures are turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the elements or features. Thus, the exemplary term "below" can encompass both an orientation of below and above. The articles may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative terms used herein should be interpreted accordingly.
In this document, the terms "first", "second", etc. are used to distinguish two different elements or portions, and are not used to define a particular position or relative relationship. In other words, the terms "first," "second," and the like may also be interchanged with one another in some embodiments.
As shown in fig. 1 to 3, the utility model provides a continuous steel slag reduction and modification device, wherein the steel slag comprises liquid steel slag or liquid steel slag with partial solid steel slag, and comprises a slag tank tipping device 2, a solid steel slag crushing device 2 and a steel slag melting device 3; the slag pot tipping device 1 comprises a fixing mechanism 1-1, a tipping mechanism 1-2, a weighing sensor and a temperature measuring instrument, wherein the fixing mechanism 1-1 comprises a clamping part for fixing a slag pot, the tipping mechanism 1-2 comprises at least two joint arms in rotary connection and a driving mechanism for driving the joint arms, and one end of each joint arm is connected with the fixing mechanism and is used for driving the fixing mechanism 1-1 to tip the slag pot into a steel slag melting device by driving the joint arms; the weighing sensor and the temperature measuring instrument are used for detecting the weight and the temperature of the steel slag and feeding back the weight and the temperature to the control end; the solid steel slag crushing device 2 is used for crushing solid steel slag on the surface of the slag tank; the steel slag melting device 3 comprises a melting furnace, wherein a steel slag feeding port 3-6, a reactant feeding port 3-1, a gas stirring port, a tapping hole 3-5, a slag outlet 3-4 and a plurality of heating electrodes 3-2 positioned at different positions are arranged on the melting furnace; the reactant charging hole 3-1 is used for charging a reactant, and the reactant comprises a steel slag reducing agent and/or a reconstruction agent; the heating electrodes 3-2 are used for heating at different positions of the melting furnace with different powers according to the weight and the temperature of the steel slag and instructions of a control end; the steel slag adding port 3-6 is used for adding steel slag into the melting furnace; the gas stirring port is used for introducing gas to stir and melt the steel slag; the heights of the tap hole 3-5 and the slag hole 3-4 are different, the position of the slag hole 3-4 in the melting furnace is higher than the position of the tap hole 3-5, and the tap hole 3-5 and the slag hole 3-4 are used for shunting and discharging reduced iron and reconstructed steel slag.
The utility model discloses when using, slag pot tipping device measures the temperature and the weight of slag and feeds back to the control end before the slag adds the melting furnace, pour the slag into the slag melting device after, heating electrode can carry out different power heating according to the temperature and the weight of pouring into according to the slag, and add the reactant through the reactant charge door, through gas stirring fully reacted, utilize the proportion difference of iron and sediment, through setting up the not co-altitude of tap hole and slag notch, make reduced iron and reconsitution slag reposition of redundant personnel outside arranging. And when the steel slag is not treated, the steel slag can be continuously added, and the control end intelligently adjusts the heating electrode according to the adding condition, so that continuous reaction and continuous discharge are realized.
Further, the melting furnace is provided with a temperature sensor, and the temperature sensor is used for monitoring the temperature in the melting furnace and feeding back to the control end.
When the slag melting device is used specifically, a slag tank filled with liquid steel slag is placed on the fixing mechanism through the overhead travelling crane, the weighing system is used for weighing the weight of the steel slag in the slag tank, the temperature measuring device is used for measuring the temperature of the steel slag in the slag tank and feeding back the weight and the temperature of the steel slag to the control end, and the control end is used for adjusting the working parameters of the steel slag melting device 3 in the next procedure in a linkage mode, so that the medicament and the heating of the steel slag melting device are based, and the intelligent control function is realized. The steel slag which is weighed and measured in temperature is poured into a slag chute of the steel slag melting device 3 by the tipping mechanism and enters the steel slag melting device 3 through the slag chute.
Further, the solid steel slag crushing device 2 comprises a horizontal moving device 2-1, a telescopic device 2-2 connected with the horizontal moving device, and a slag crushing part 2-3 connected to the end part of the telescopic device 2-2, and is used for controlling the slag crushing part to crush the solid steel slag on the surface of the slag tank by operating the horizontal moving device and the telescopic device. If the slag surface in the slag ladle of the slag ladle tipping device 1 is cooled into solid slag, which can affect the tipping of the liquid slag, the solid slag crushing device 2 crushes the solid slag on the surface layer, and the crushed solid slag and the liquid slag are poured into the slag melting device 3 together.
Furthermore, the rotating angle of the tipping mechanism 1-2 is 0-90 degrees, so that the slag pot can safely and stably rotate by taking the axis of the suspension trunnion as a rotation center. Optionally, the tipping mechanism 1-2 is controlled by frequency conversion and is used for enabling the steel slag to be tipped stably. In order to ensure that the liquid steel slag is stably poured, the tipping mechanism adopts variable frequency control, the rotating speed during pouring can be adjusted, and the larger the tipping angle is, the slower the tipping speed is.
Furthermore, the device also comprises a feeding device for feeding the reactant into the reactant feeding port, and the feeding device is matched with a metering device.
Furthermore, the steel slag melting device also comprises a slag chute used for guiding the steel slag to enter the steel slag feeding port.
Furthermore, the melting furnace is also provided with a dust removal port, and the dust removal port is used for being connected with a matched dust removal system and removing dust-containing gas generated in the melting device.
Further, the steel slag can be one or more selected from common steel slag, vanadium-titanium steel slag, casting residue and desulphurization slag.
On the other hand, the utility model discloses the step that specifically uses is as follows:
weighing and measuring the temperature of the steel slag, and adding the steel slag into a melting furnace;
the heating electrodes have different heating powers at different positions according to the instruction of the control end, so that the steel slag is in a molten state;
adding a reactant into a melting device for reaction, and introducing inert gas for stirring to ensure that the steel slag and the reactant are fully reacted; optionally, the reactant comprises a reducing agent and/or a reconstituting agent;
the reduced molten iron flows out at regular time through a tap hole 3-5 for returning to the steelmaking process, and the reconstructed steel slag flows out through a slag hole 3-4.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to be exhaustive or to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application, to thereby enable others skilled in the art to make and utilize various exemplary embodiments of the invention and various alternatives and modifications. Any simple modifications, equivalent changes and modifications made to the above exemplary embodiments shall fall within the scope of the present invention.
Claims (9)
1. A continuous steel slag reduction modification device is characterized by comprising a slag tank tipping device, a solid steel slag crushing device and a steel slag melting device;
the slag pot tipping device comprises a fixing mechanism, a tipping mechanism, a weighing sensor and a temperature measuring instrument, wherein the fixing mechanism comprises a clamping part for fixing the slag pot, the tipping mechanism comprises at least two joint arms which are connected in a rotating manner and a driving mechanism for driving the joint arms, and one end of each joint arm is connected with the fixing mechanism and is used for driving the fixing mechanism to tip the slag pot into the slag melting device by driving the joint arms; the weighing sensor and the temperature measuring instrument are used for detecting the weight and the temperature of the steel slag and feeding back the weight and the temperature to the control end;
the solid steel slag crushing device is used for crushing solid steel slag on the surface of the slag tank;
the steel slag melting device comprises a melting furnace, wherein a steel slag feeding port, a reactant feeding port, a gas stirring port, an iron outlet, a slag outlet and a plurality of heating electrodes positioned at different positions are arranged on the melting furnace;
the reactant charging hole is used for charging a reactant;
the heating electrodes are used for heating with different powers at different positions of the melting furnace according to the weight and the temperature of the steel slag and an instruction of a control end;
the steel slag feeding port is used for feeding steel slag into the melting furnace;
the gas stirring port is used for introducing gas to stir molten steel slag;
the height of the tap hole and the slag hole is different, the position of the slag hole, which is positioned in the melting furnace, is higher than that of the tap hole, and the tap hole and the slag hole are used for shunting and discharging reduced iron and reconstructed steel slag.
2. The continuous steel slag reduction and modification equipment as claimed in claim 1, wherein the melting furnace is provided with a temperature sensor, and the temperature sensor is used for monitoring the temperature in the melting furnace and feeding back to the control end.
3. The continuous steel slag reduction and modification equipment as claimed in claim 2, wherein the solid steel slag crushing device comprises a horizontal moving device, a telescopic device connected with the horizontal moving device, and a slag breaking part connected with the end part of the telescopic device, and is used for controlling the slag breaking part to crush the solid steel slag on the surface of the slag pot by operating the horizontal moving device and the telescopic device.
4. The continuous steel slag reduction and modification equipment as claimed in claim 1, wherein the rotation angle of the tilting mechanism is 0 ° to 90 °.
5. The continuous steel slag reduction and modification equipment as claimed in claim 4, wherein the tilting mechanism is a frequency-conversion-controlled tilting mechanism for stabilizing the steel slag tilting process.
6. The continuous steel slag reduction and modification equipment as claimed in any one of claims 1 to 5, further comprising a feeding device for feeding the reactant to the reactant feeding port, wherein the feeding device is provided with a metering device.
7. The continuous steel slag reducing and modifying apparatus as claimed in any one of claims 1 to 5, wherein the steel slag melting device further comprises a chute for guiding the steel slag into the steel slag inlet.
8. The continuous steel slag reduction and modification equipment as claimed in any one of claims 1 to 5, wherein the melting furnace is further provided with a dust removal port, and the dust removal port is used for being connected with a matched dust removal system and removing dust-containing gas generated in the melting device.
9. The continuous steel slag reduction-modification apparatus as claimed in any one of claims 1 to 5, wherein the steel slag is selected from one of ordinary steel slag, vanadium-titanium steel slag, casting slag and desulfurized slag.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221737615.9U CN218710606U (en) | 2022-07-07 | 2022-07-07 | Continuous steel slag reduction modification equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221737615.9U CN218710606U (en) | 2022-07-07 | 2022-07-07 | Continuous steel slag reduction modification equipment |
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| CN218710606U true CN218710606U (en) | 2023-03-24 |
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| CN202221737615.9U Active CN218710606U (en) | 2022-07-07 | 2022-07-07 | Continuous steel slag reduction modification equipment |
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