Ring type dry treatment and waste heat recovery device and method for smelting slag

Abstract

The invention discloses a smelting slag ring type dry method treatment and waste heat recovery device and method. Comprising an annular rotary frame, and bearing riding wheels are arranged below the rotary frame; supporting bent rails are arranged on the inner sides of the bearing riding wheels; a plurality of fan-shaped cooling turning plates are uniformly distributed on the rotary frame; a cooling water pipe or a cooling water jacket is arranged in the cooling turning plate; the same side of each cooling turning plate in the radial direction is hinged to the rotary frame; the bottom of each cooling turning plate is downwards provided with a wheel frame, and the two ends of each wheel frame are provided with rail wheels corresponding to the corresponding supporting inner supporting bent rail and the corresponding supporting outer supporting bent rail. The inner supporting bent rail and the outer supporting bent rail form a downwards-concave section at the preset position. A rotary water supply joint is arranged at the central position of the rotary frame; a water supply pipe and a water return pipe are arranged between the rotary water supply joint and the rotary frame; the stator part of the rotary water supply connector is used for being connected with a water supply pipe. The smelting treatment speed is high, and waste heat can be utilized for power generation.

Description

Technical Field

[0001] The invention relates to a smelting slag ring-type dry method treatment and waste heat recovery device and method. Background Art

[0002] There are many kinds of slag after smelting, including iron slag, steel slag, stainless steel slag, etc. Due to incomplete technical processes, smelting slag is disliked by smelters and becomes a burden. With the advancement of process technology, various smelting slags have gradually become popular, turning waste into treasure. After various slag treatment processes, they are reused and screened layer by layer for different application scenarios. At present, the main slag treatment processes are concentrated on hot stewing, hot pouring, crushing, screening and magnetic separation. The heat energy contained in the slag itself is rarely used. The smelting slag contains extremely high heat, and the temperature of the liquid slag reaches more than one thousand degrees. Even after crushing in the later stage, there are still several hundred degrees. The high heat energy is wasted by cooling. Summary of the invention

[0003] In order to overcome the above-mentioned defects, the object of the present invention is to provide a smelting slag ring dry treatment and waste heat recovery device and method.

[0004] In order to achieve the above-mentioned purpose, a smelting slag ring dry treatment and waste heat recovery device is provided, comprising:

[0005] A ring-shaped rotating frame, with a plurality of inner ring load-bearing supporting wheels and outer ring load-bearing supporting wheels correspondingly arranged below the rotating frame;

[0006] A driving device, used for driving the rotary frame to rotate;

[0007] An inner support curved rail is arranged on the outer side of the inner ring load-bearing supporting wheel; and an outer support curved rail is arranged on the inner side of the outer ring load-bearing supporting wheel;

[0008] The inner supporting curved rail and the outer supporting curved rail are arranged concentrically;

[0009] A plurality of fan-shaped cooling flaps are evenly distributed on the revolving frame; a cooling water pipe or a cooling water jacket is arranged in the cooling flap; the cooling water pipe or the cooling water jacket is provided with a water inlet and a water outlet;

[0010] The same radial side of each cooling flap is hinged on the revolving frame; a wheel frame is arranged downward at the bottom of each cooling flap, and track wheels are arranged at both ends of the wheel frame corresponding to the inner supporting curved rail and the outer supporting curved rail;

[0011] The inner supporting curved rail and the outer supporting curved rail form a concave section at a predetermined position;

[0012] When the cooling flap moves to the concave section driven by the rotating frame, the track wheel below the cooling flap moves along the concave section under the action of gravity, so that the cooling flap is turned downward by a predetermined angle along the hinge axis; when the cooling flap leaves the concave section driven by the rotating frame, the track wheel below the cooling flap gradually moves to the ground section along the curved track;

[0013] A rotating water supply joint is arranged at the center of the rotating frame; a water supply pipe and a water return (gas) pipe are arranged between the rotating water supply joint and the rotating frame;

[0014] The stator part of the rotating water supply joint is used to connect the water supply pipe; the rotor part of the rotating water supply joint is connected to the rotating frame corresponding to each cooling flap through the water supply pipe; the water supply pipe of the rotating frame is connected to the cooling water pipe of each cooling flap or the water inlet of the cooling water jacket through a pipeline; the return water (gas) pipe of the rotating frame is connected to the cooling water pipe of each cooling flap or the water outlet of the cooling water jacket through a pipeline.

[0015] Furthermore, a cantilever bracket is arranged on the inner side or the outer side of the revolving frame, and a dust cover is arranged below the cantilever bracket corresponding to the revolving frame.

[0016] Furthermore, a cantilever bracket is arranged on one side of the revolving frame; and a flattening roller is arranged below the cantilever bracket corresponding to the cooling flap.

[0017] Furthermore, a cantilever bracket is arranged on one side of the revolving frame; and a crushing roller is arranged below the cantilever bracket corresponding to the cooling flap.

[0018] Furthermore, a cantilever bracket is provided on one side of the rotary frame; a slag pan tilting machine is provided on the cantilever bracket corresponding to the cooling flap;

[0019] Furthermore, the rotary frame is divided into a slag dumping area, a slag spreading area, a slag crushing area and a slag dropping area in sequence;

[0020] A cantilever support is provided on one side of the rotary frame at the slag dumping area; a slag pan tilting machine is provided on the cantilever support corresponding to the cooling flap;

[0021] One or more cantilever brackets are arranged on one side of the rotating frame of the evenly paving area; and a paving roller is arranged below the cantilever bracket corresponding to the cooling flap;

[0022] One or more cantilever supports are arranged on one side of the rotary frame in the slag crushing area; a crushing roller is arranged below the cantilever supports corresponding to the cooling flap;

[0023] The slag dropping area is arranged corresponding to the concave section of the curved track.

[0024] Furthermore, a slag pit is arranged at the foundation corresponding to the concave section, and a material guide funnel is arranged in the slag pit; a pair of crushing rollers are arranged at intervals below the material guide funnel; wherein at least one crushing roller is connected to a reduction motor.

[0025] Furthermore, guide wheels are provided corresponding to the inner circumferential surface and / or the outer circumferential surface of the revolving frame.

[0026] Furthermore, a waste heat recovery pipe is arranged in the dust cover.

[0027] To achieve the above-mentioned purpose, the present invention provides a method for ring-type dry treatment of smelting slag and waste heat recovery, wherein the method is implemented by the above-mentioned device, and the method comprises:

[0028] The slewing frame is driven by the driving device to rotate;

[0029] The slag pan tilting machine evenly pours the high-temperature liquid slag onto a cooling flap formed in a circle through electronic control; the cooling water pipe or cooling water jacket inside the cooling flap absorbs the residual heat of the liquid slag through the inlet and outlet of the water channel to exchange energy and generate steam. The steam-water mixture enters from the rotating water supply joint and is output after the water vapor separation at the top;

[0030] The high-temperature liquid slag is flattened by the flattening rollers in the evenly spread area;

[0031] After paving, the slag is crushed by the crushing rollers in the slag crushing area;

[0032] When the cooling flap runs to the concave curved track at the slag falling area, the cooling flap flips downward to allow the crushed slag to fall into the slag pit.

[0033] The present invention adopts a rotating frame to realize continuous slag pouring, paving, slag crushing, slag dropping and other processes; it can achieve extremely efficient processing speed without slag leakage. At the same time, in the process of pouring, paving and crushing slag, the cooling water pipe or cooling water jacket in the cooling flap is used to recover the waste heat, so that the steam generated by the waste heat recovery can be used for power generation. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 A top view of a smelting slag ring dry treatment and waste heat recovery process device;

[0035] Figure 2 AA view (center section of the main transmission and rotary joint);

[0036] Figure 3 BB view (cross-section of heat-absorbing dust cover);

[0037] Figure 4 CC view (cantilever paving roller cross-section);

[0038] Figure 5 DD view (section view of cantilever crushing roller);

[0039] Figure 6 FF view (cross-section of the crushing roller in the blanking area);

[0040] Figure 7 EE view (section of slag pan tilting machine); DETAILED DESCRIPTION

[0041] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0042] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0043] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0044] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] The smelting slag ring dry treatment device of the present invention. Figures 1 to 7 Shown; including:

[0046] The annular revolving frame 2 has a plurality of inner ring load-bearing supporting wheels and outer ring load-bearing supporting wheels 5 disposed correspondingly below the revolving frame;

[0047] A driving device 1, used for driving the rotary frame to rotate;

[0048] An inner support curved rail 6 is arranged on the outer side of the inner ring load-bearing supporting wheel; and an outer support curved rail is arranged on the inner side of the outer ring load-bearing supporting wheel;

[0049] The inner supporting curved rail and the outer supporting curved rail are arranged concentrically;

[0050] A plurality of fan-shaped cooling flaps 3 are evenly distributed on the revolving frame;

[0051] Among them, Figure 6 As shown, the same side of each cooling flap in the radial direction is hinged on the revolving frame; a wheel frame is arranged downward at the bottom of each cooling flap, and track wheels are arranged at both ends of the wheel frame corresponding to the inner supporting curved rail and the outer supporting curved rail; the inner supporting curved rail and the outer supporting curved rail form a concave section at a predetermined position;

[0052] When the cooling flap moves to the concave section driven by the rotating frame, the track wheels below the cooling flap move along the concave section under the action of gravity, causing the cooling flap to flip downward by a predetermined angle along the hinge axis; when the cooling flap leaves the concave section driven by the rotating frame, the track wheels below the cooling flap gradually move to the ground section along the curved track.

[0053] A rotating water supply joint 8 is provided at the center of the rotating frame; a water supply pipe and a return water (gas) pipe are provided between the rotating water supply joint and the rotating frame;

[0054] The stator part of the rotating water supply joint is used to connect the water supply pipe; the rotor part of the rotating water supply joint is connected to the rotating frame corresponding to each cooling flap through the water supply pipe; the water supply pipe of the rotating frame is connected to the cooling water pipe of each cooling flap or the water inlet of the cooling water jacket through a pipeline. For example, it can be connected through a coaxially arranged rotating joint at the hinge axis of the cooling flap and the rotating frame; that is, the water supply pipe of the rotating frame is connected to the water inlet of the rotating joint through a pipeline; the water outlet of the rotating joint is connected to the cooling water pipe of the cooling flap or the water inlet of the cooling water jacket; the rotating joint can be selected as one inlet and one outlet or two inlets and two outlets as needed. The return water (gas) pipe of the rotating frame is connected to the cooling water pipe of each cooling flap or the water outlet of the cooling water jacket through a pipeline.

[0055] A slag pit is arranged at the foundation corresponding to the concave section, and a material guide funnel is arranged in the slag pit; a pair of crushing rollers are arranged at intervals below the material guide funnel; wherein at least one crushing roller is connected to a reduction motor.

[0056] like Figure 2 and Figure 3 As shown, a cantilever bracket is provided inside or outside the rotary frame, and a dust cover 4 is provided below the cantilever bracket corresponding to the rotary frame. Furthermore, a waste heat recovery pipe is provided in the dust cover to facilitate the absorption and utilization of the heat radiation energy on the surface of the high-temperature liquid slag, which is converted into part of the steam and taken away. At the same time, the heat-absorbing dust cover 4 also has a dust-proof effect.

[0057] like Figure 4 As shown, a cantilever bracket is arranged on one side of the revolving frame; and a flattening roller is arranged below the cantilever bracket corresponding to the cooling flap.

[0058] like Figure 5 As shown, a cantilever bracket is arranged on one side of the rotating frame; and a crushing roller is arranged below the cantilever bracket corresponding to the cooling flap.

[0059] like Figure 7 As shown, a cantilever bracket is arranged on one side of the rotary frame; a slag pan tilting machine is arranged on the cantilever bracket corresponding to the cooling flap;

[0060] As a preferred embodiment of the present invention, the rotary frame is divided into a slag dumping area, a slag spreading area, a slag crushing area and a slag dropping area in sequence;

[0061] A cantilever support is provided on one side of the rotary frame at the slag dumping area; a slag pan tilting machine is provided on the cantilever support corresponding to the cooling flap;

[0062] One or more cantilever brackets are arranged on one side of the rotating frame of the evenly paving area; and a paving roller is arranged below the cantilever bracket corresponding to the cooling flap;

[0063] One or more cantilever supports are arranged on one side of the rotary frame in the slag crushing area; a crushing roller is arranged below the cantilever supports corresponding to the cooling flap;

[0064] Furthermore, guide wheels 7 are provided corresponding to the inner circumferential surface and / or the outer circumferential surface of the revolving frame.

[0065] Working process:

[0066] First, the smelting slag is poured into the slag pan, which is then lifted by a crane to the slag pan tilting machine 12 in the slag pouring area. The slag pan tilting machine 12 evenly pours the high-temperature liquid slag onto the cooling flap 3 forming a circle through electronic control. The lower middle part of the cooling flap 3 is a load-bearing wheel, which travels in a circle on the supporting curved track 6. The cooling flap 3 is connected to the revolving frame 2 through a hinge support below the forward direction. The revolving frame 2 is driven by the main drive 1 and the central guiding action of the guide wheel 6. The revolving frame 2 rotates, and at the same time drives the outer ring rotor of the center 8 of the rotary joint to move, and drives the cooling flap 3 to rotate. The number of cooling flaps 2 in a circle is designed to be fan-shaped and evenly distributed according to the process requirements. The present invention surrounds a circle with 60 evenly distributed pieces, and each cooling flap 2 is connected to the revolving frame 2. The main drive 1 is symmetrically arranged on both sides of the rotating frame 2, and the guide wheels 7 are arranged inside the rotating frame 2 corresponding to the number of each cooling flap 2, so as to ensure that the rotating frame 2 does not eccentricity when rotating on the load-bearing supporting wheel 5. The entire rotating frame is connected into a rotating whole. The entire rotating process, starting from the starting position of the slag pouring, passes through the evenly spread area, the slag crushing area and the slag dropping area at the end position. When the liquid slag is poured on the cooling flap 2, the cooling flap 2 adopts a serpentine pipeline arrangement, with one water channel in and one out, absorbing the waste heat of the liquid slag for energy exchange to generate steam, and the steam-water mixture enters from the center of the rotating joint 8, and is separated by the water vapor at the top of the center of the rotating joint 8. The bottom cooling water is sent to the cooling flap 2 through the power pump, and the cooling flap 2 absorbs the heat of the liquid slag to generate steam. This is repeated, and the high-pressure steam is sent to the generator set for power generation through a series of processes, forming a process of absorbing and reusing the waste heat of the liquid slag.

[0067] When the liquid slag is poured onto the cooling flap 3, it flows and accumulates on the cooling flap 3, forming a shape with high thickness in the middle and thin edges. As the rotating frame 2 rotates, the cooling flap 3 with accumulated liquid slag comes to the evenly spread area, which is provided with a cantilevered flattening roller 9. The high-temperature slag with good fluidity is evenly distributed to the outer area of ​​the cooling flap 3 under the rolling pressure of the cantilevered flattening roller 9, so that the slag thickness on each cooling flap 3 is basically uniform, the area is maximized, and the heat absorption is also the best. When the rotating frame 2 transfers the flattened cooling flap 3 to the slag crushing area, the slag has been cooled for a certain period of time, and the surface has gradually hardened, especially the bottom of the slag and the top surface of the cooling flap 3 contact and cool and harden faster, but the inside of the slag is still hot and still in a fluid state. At this time, the cantilevered crushing roller 10 above rotates by extrusion, crushes the flattened slag by extrusion, releases the internal temperature of the slag, absorbs and takes away the heat as much as possible, and converts it into steam. The surface of the cantilever crushing roller 10 is welded with irregular cones, similar to the structure of a mace, which punctures and squeezes to crush and flatten the slag. The rotating frame 2 continues to rotate, and heat is continuously absorbed. When the cooling flap 3 reaches the slag dropping area, the cooling flap 3 gradually changes its inclination angle from the horizontal position under the action of gravity through the action of the curved track. When it reaches the intermediate critical point, the cooling flap 3 will suddenly step into the air from a certain angle and flip directly to a vertical state. Under the action of gravity and inertia, the slag on the cooling flap 3 falls directly into the crushing roller 11 below. Under the strong squeezing force of the crushing roller 11, the slag is further crushed and falls and is transported to other places for screening and utilization. During the entire rotary motion process, as the slag continues to cool and shrink on the cooling flap 3, there is a displacement between the bottom of the slag and the top plate of the cooling flap 3, so there will be no slag sticking phenomenon. In the process of absorbing the waste heat of the smelting slag, the speed of the entire rotary frame 2 can be frequency-controlled. The speed is faster during the initial slag pouring to ensure that the hot slag is quickly poured onto the cooling flap 3. After the pouring is completed, the slag pan is subjected to waste heat conversion and absorption in the rotary ring cooling. At this time, the rotation speed slows down and is dynamically adjusted according to the cooling speed and the time interval for slag delivery. The entire rotary frame can also stop to absorb waste heat, or it can slowly rotate and operate, and can work continuously. In the entire waste heat recovery process, a heat-absorbing dust removal hood 4 is also provided on the cooling flap 3. The heat-absorbing dust removal hood 4 is also cooled by water, and the thermal radiation energy on the slag surface is converted into part of the steam and taken away. At the same time, the heat-absorbing dust removal hood 4 also has a dust removal function, especially in the slag pouring area and the slag dropping area, all the dust and smoke generated are sucked away for purification.

[0068] The present invention is described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of ordinary technicians in the field without departing from the purpose of the present invention. Many other changes and modifications that do not depart from the concept and scope of the present invention should be regarded as the protection scope of the present invention.

[0069] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0070] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A smelting slag ring dry treatment and waste heat recovery device, characterized in that: include: A ring-shaped rotating frame, with a plurality of inner ring load-bearing supporting wheels and outer ring load-bearing supporting wheels correspondingly arranged below the rotating frame; A driving device, used for driving the rotary frame to rotate; An inner support curved rail is arranged on the outer side of the inner ring load-bearing supporting wheel; and an outer support curved rail is arranged on the inner side of the outer ring load-bearing supporting wheel; The inner supporting curved rail and the outer supporting curved rail are arranged concentrically; A plurality of fan-shaped cooling flaps are evenly distributed on the revolving frame; a cooling water pipe or a cooling water jacket is arranged in the cooling flap; the cooling water pipe or the cooling water jacket is provided with a water inlet and a water outlet; The same radial side of each cooling flap is hinged on the revolving frame; a wheel frame is arranged downward at the bottom of each cooling flap, and track wheels are arranged at both ends of the wheel frame corresponding to the inner supporting curved rail and the outer supporting curved rail; The inner supporting curved rail and the outer supporting curved rail form a concave section at a predetermined position; When the cooling flap moves to the concave section driven by the rotating frame, the track wheel below the cooling flap moves along the concave section under the action of gravity, so that the cooling flap is turned downward by a predetermined angle along the hinge axis; when the cooling flap leaves the concave section driven by the rotating frame, the track wheel below the cooling flap gradually moves to the ground section along the curved track; A rotating water supply joint is arranged at the center of the rotating frame; a water supply pipe and a water return (gas) pipe are arranged between the rotating water supply joint and the rotating frame; The stator part of the rotating water supply joint is used to connect the water supply pipe; the rotor part of the rotating water supply joint is connected to the rotating frame corresponding to each cooling flap through the water supply pipe; the water supply pipe of the rotating frame is connected to the cooling water pipe of each cooling flap or the water inlet of the cooling water jacket through a pipeline; the return water (gas) pipe of the rotating frame is connected to the cooling water pipe of each cooling flap or the water outlet of the cooling water jacket through a pipeline.

2. The smelting slag ring dry treatment and waste heat recovery device according to claim 1, characterized in that: A cantilever bracket is arranged on the inner side or the outer side of the slewing frame, and a dust cover is arranged below the cantilever bracket corresponding to the slewing frame.

3. The smelting slag ring dry treatment and waste heat recovery device according to claim 1, characterized in that: A cantilever bracket is arranged on one side of the revolving frame; and a flattening roller is arranged below the cantilever bracket corresponding to the cooling flap.

4. The smelting slag ring dry treatment and waste heat recovery device according to claim 1, characterized in that: A cantilever bracket is arranged on one side of the rotary frame; a crushing roller is arranged below the cantilever bracket corresponding to the cooling flap.

5. The smelting slag ring dry treatment and waste heat recovery device according to claim 1, characterized in that: A cantilever bracket is arranged on one side of the rotary frame; a slag pan tilting machine is arranged on the cantilever bracket corresponding to the cooling flap.

6. The smelting slag ring dry treatment and waste heat recovery device according to claim 1, characterized in that: The rotary frame is divided into a slag dumping area, a slag spreading area, a slag crushing area and a slag dropping area in sequence; A cantilever support is provided on one side of the rotary frame at the slag dumping area; a slag pan tilting machine is provided on the cantilever support corresponding to the cooling flap; One or more cantilever brackets are arranged on one side of the rotating frame of the evenly paving area; and a paving roller is arranged below the cantilever bracket corresponding to the cooling flap; One or more cantilever supports are arranged on one side of the rotary frame in the slag crushing area; a crushing roller is arranged below the cantilever supports corresponding to the cooling flap; The slag dropping area is arranged corresponding to the concave section of the curved track.

7. The smelting slag ring dry treatment and waste heat recovery device according to claim 1, characterized in that: A slag pit is arranged at the foundation corresponding to the concave section, and a material guide funnel is arranged in the slag pit; a pair of crushing rollers are arranged at intervals below the material guide funnel; wherein at least one crushing roller is connected to a reduction motor.

8. The smelting slag ring dry treatment and waste heat recovery device according to claim 1, characterized in that: Guide wheels are arranged corresponding to the inner circumferential surface and / or the outer circumferential surface of the revolving frame.

9. The smelting slag ring dry treatment and waste heat recovery device according to claim 1, characterized in that: A waste heat recovery pipe is arranged in the dust cover.

10. A method for ring-type dry treatment of smelting slag and waste heat recovery, wherein the method is implemented by the device as claimed in claim 1, characterized in that: The method includes: The slewing frame is driven by the driving device to rotate; The slag pan tilting machine evenly pours the high-temperature liquid slag onto a cooling flap formed in a circle through electronic control; the cooling water pipe or cooling water jacket inside the cooling flap absorbs the residual heat of the liquid slag through the inlet and outlet of the water channel to exchange energy and generate steam. The steam-water mixture enters from the rotating water supply joint and is output after the water vapor separation at the top; The high-temperature liquid slag is flattened by the flattening rollers in the evenly spread area; After paving, the slag is crushed by the crushing rollers in the slag crushing area; When the cooling flap runs to the concave curved track at the slag falling area, the cooling flap flips downward to allow the crushed slag to fall into the slag pit.

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