Efficient and energy-saving selective hot-state metallurgical slag granulation equipment and process

Abstract

The invention provides efficient and energy-saving selective hot-state metallurgical slag granulating equipment and process. The equipment comprises a selective granulating machine, and the selective granulating machine comprises a main beam, a first auxiliary beam, a second auxiliary beam and a plurality of ploughing and breaking integrated teeth; the main beam is of a box-shaped structure with a downward groove in the upper end face, and a plurality of first guide sleeves are arranged at the bottom. The first auxiliary beam and the second auxiliary beam are both located in the groove, and the second auxiliary beam is located over the first auxiliary beam. A plurality of second guide sleeves and a plurality of first drill rods are alternately arranged on the first secondary beam; the second auxiliary beam is provided with a plurality of second drill rods, and the second drill rods correspond to the second guide sleeves in position. The first drill rod downwards penetrates through the first guide sleeve to be connected with the ploughing and breaking integrated tooth, and the second drill rod downwards sequentially penetrates through the second guide sleeve and the first guide sleeve to be connected with the ploughing and breaking integrated tooth. According to the invention, the operation efficiency of the metallurgical slag granulation production line is greatly improved, the energy consumption of the metallurgical slag granulation production line is obviously reduced, and the problem of frequent jamming in a rolling granulation process is solved.

Description

Technical Field

[0001] The invention relates to the technical field of molten high-temperature metallurgical slag treatment in the metallurgical industry, and in particular to a highly efficient and energy-saving selective hot metallurgical slag granulation equipment and process. Background Art

[0002] The metallurgical slag roller crushing process is a processing method that uses continuously rotating crushing rollers or granulating rollers to disperse and crush the liquid molten metallurgical slag to solidify and cool the liquid molten metallurgical slag. The roller crushing process includes two methods. One is to move the crushing roller, that is, the crushing roller is placed on a mobile trolley, and the crushing trough containing the liquid molten metallurgical slag is fixed. The crushing roller moves both horizontally and rotates to achieve granulation, solidification and crushing of the molten metallurgical slag; the other is to fix the crushing roller, that is, the crushing roller can only rotate, and the crushing trough containing the liquid molten metallurgical slag moves back and forth horizontally to achieve granulation, solidification and crushing of the molten metallurgical slag.

[0003] The main transmission of roller crushing is the rotation of the crushing roller. Its power transmission is generally realized by motors, reducers, etc. to achieve torque input. The diameter of the crushing roller is generally around 3200-3600mm. Due to the large diameter and rotational inertia, the torque input from the motor and reducer to the crushing tooth tip will be greatly discounted when converted into force. For example, the motor power is 132kw, and the maximum crushing pressure converted to the crushing tooth tip is about 55000N, which makes the crushing roller very easy to get stuck. In fact, the feeding speed of the crushing roller in the current roller crushing process is 16-23mm / s. If it exceeds this speed (of course, a larger driving power can be used to increase the feeding speed, but this means higher energy consumption), whether it is crushing or pushing slag, it is easy to cause the crushing roller to get stuck, and even damage the crushing roller equipment in severe cases. This is also the main reason for the low efficiency of the roller crushing process. In addition, when such a huge crushing roller is used to discretely separate liquid slag, its working current is only 40-50% of the rated current, which is a "big horse pulling a small cart" with low efficiency and increased equipment investment.

[0004] The molten liquid metallurgical slag contains about 70-80% liquid slag and about 20-30% solid slag. What really needs to be crushed is the solid slag that has been crystallized and solidified. The remaining liquid slag does not need to be crushed, but discretely separated to prevent it from crystallizing into large pieces.

[0005] In summary, the roller crushing process can neither efficiently crush solid slag nor efficiently disperse liquid slag. It has low transmission efficiency, large investment, and is very easy to get stuck. It frequently requires excavators or manual labor to enter the roller pressing area to clean the slag to resume production. Therefore, a more efficient, energy-saving and low-cost granulation equipment and process is urgently needed. Summary of the invention

[0006] In view of this, an object of the embodiments of the present invention is to provide a highly efficient and energy-saving selective hot metallurgical slag granulation equipment and process to solve the existing technical problems.

[0007] To achieve the above-mentioned purpose, in a first aspect, an embodiment of the present invention provides a highly efficient and energy-saving selective hot metallurgical slag granulation equipment, the equipment comprising a selective granulator, the selective granulator comprising a main beam, a first sub-beam, a second sub-beam and a plurality of plowing and breaking integrated teeth;

[0008] The main beam is a box-shaped structure with a downward groove on the upper end surface, and a plurality of first guide sleeves are arranged at the bottom of the box-shaped structure;

[0009] The first sub-beam and the second sub-beam are both located in the groove, and the second sub-beam is located directly above the first sub-beam;

[0010] The first sub-beam is provided with a plurality of second guide sleeves and a plurality of first drill rods alternately; the second sub-beam is provided with a plurality of second drill rods, and the positions of the plurality of second drill rods and the second guide sleeves correspond;

[0011] The first drill rod passes downward through the first guide sleeve and is connected to the plowing and breaking integrated teeth, and the second drill rod passes downward through the second guide sleeve and the first guide sleeve in sequence and is connected to the plowing and breaking integrated teeth.

[0012] In some possible implementations, the upper part of the plow-break integrated tooth is a plow-slag tooth, and the lower part of the plow-break integrated tooth is a crushing slag tooth; wherein the plow-slag tooth is a mixture of a truncated cone and a prism with a small upper part and a large lower part, and the crushing slag tooth is a pyramid structure with a large upper part and a small lower part, and the large end surface of the plow-slag tooth is coplanar with the large end surface of the crushing slag tooth, and the plow-slag tooth and the crushing slag tooth are integrally cast or welded;

[0013] The plowing and breaking integrated teeth are concave downward from the small end surface of the plowing slag teeth by a certain distance to form a cavity; the edges of the plowing slag teeth and the edges of the crushing slag teeth together constitute a plow blade and a plow tip, and the plow blade and the plow tip form line contact and point contact with the metallurgical slag when the metallurgical slag is dispersed;

[0014] The upper ends of the plow teeth are connected to the first drill rod and the second drill rod by bolts.

[0015] In some possible implementations, the central axes of the first drill rod and the second drill rod are in the same vertical plane and are parallel, and both have hollow structures inside; the gap between any two adjacent first drill rods is 300 mm to 800 mm, and the gap between any two adjacent first drill rods and the second drill rods is 10 mm to 200 mm;

[0016] The ends of the first drill rod and the second drill rod are respectively provided with a water inlet and a water outlet, and a water inlet pipe is pre-buried inside the first drill rod and the second drill rod, one end of the water inlet pipe is connected to the water inlet, and the other end extends to the cavity of the plowing tooth.

[0017] In some possible implementations, the first sub-beam and the second sub-beam are respectively provided with corresponding first sub-beam lifting and lowering driving devices, and the central axes of the first sub-beam lifting and lowering driving devices and the second sub-beam lowering driving devices are located in the vertical plane where the central axes of the first drill rod and the second drill rod are located and are parallel to each other;

[0018] One end of the first auxiliary beam lifting drive device is connected to the first auxiliary beam, and the other end of the first auxiliary beam lifting drive device is connected to the top surface of the main beam;

[0019] One end of the second sub-beam lifting and lowering driving device is connected to the second sub-beam, and the other end of the second sub-beam lifting and lowering driving device is connected to the top surface of the main beam.

[0020] In some possible implementations, the equipment further comprises a granulation tank;

[0021] The granulation tank is arranged below the selective granulator, and comprises a bottom plate and guardrails arranged on both sides of the bottom plate in the length direction.

[0022] In some possible implementations, the selective granulator and the granulation tank have the following two combination modes:

[0023] Mode 1: When the selective granulator is a reciprocating translation type granulator, the granulation tank is a fixed granulation tank; the selective granulator further comprises a wheel-rail type trolley, the wheel-rail type trolley comprises a trolley and a track, the track is arranged on both sides of the length direction of the fixed granulation tank and is fixedly connected to the ground foundation, the trolley is located on the track, the main beam spans the fixed granulation tank and is connected to the wheel-rail type trolley to realize the reciprocating translation of the selective granulator in the length direction of the fixed granulation tank;

[0024] When the selective granulator is a fixed granulator, the granulation trough is a reciprocating translation granulation trough; the granulation trough also includes a plurality of groups of supporting wheels and a transmission device, the plurality of groups of supporting wheels and the transmission device are fixedly connected to the ground foundation, the plurality of groups of supporting wheels are arranged on both sides below the bottom plate and support the bottom plate, and the transmission device drives the granulation trough to realize reciprocating translation on the plurality of groups of supporting wheels.

[0025] In some possible implementations, a hydraulic overload protection system is further included, wherein the hydraulic overload protection system is connected to the first sub-beam lifting drive device and the second sub-beam lifting drive device, respectively, and when the system pressure of the crushed solid metallurgical slag or the discrete liquid metallurgical slag exceeds the protection limit, the first sub-beam lifting drive device and the second sub-beam lifting drive device are quickly unloaded and raised to protect the equipment;

[0026] The hydraulic overload protection system comprises:

[0027] A pressure detection unit, used to detect the pressure value of the first auxiliary beam according to the system pressure of the hydraulic protection system; when the pressure value is greater than a set pressure threshold, the hydraulic pressure automatically controls the lifting operation of the lifting drive device;

[0028] a displacement detection unit, configured to detect a displacement value of the first sub-beam according to a displacement sensor provided on the first sub-beam;

[0029] A current detection unit is used to use a current sensor to monitor the current of the reciprocating-translational granulation tank or the reciprocating-translational granulation machine in real time; when the current value exceeds a preset current threshold, the hydraulic control system automatically controls the operation of raising the lifting drive device;

[0030] The monitoring and alarm unit is used to monitor the working status of the lifting device drive in real time, and when the lifting drive device is abnormal, an alarm is issued and fault information is displayed.

[0031] In some possible implementations, an infrared monitoring device and a control system are further included, which are used to monitor the state of the metallurgical slag in real time before the metallurgical slag enters the granulation tank or the selective granulator, and the control system selects different processing modes according to the state of the metallurgical slag, and the processing modes include a crushing mode and a discrete mode;

[0032] The automatic control system interlocks the system pressure signal of the hydraulic overload protection system, the current signal of the hydraulic pump and the position signal of the first sub-beam, and dynamically adjusts the descending height of the first drill rod and the plowing and breaking integrated tooth according to the pressure signal and the current signal.

[0033] In a second aspect, an embodiment of the present invention provides a highly efficient and energy-saving selective hot metallurgical slag granulation process. The process is applied to a selective hot metallurgical slag granulation equipment described in the first aspect, and the process comprises the following steps:

[0034] Step S11, separating solid metallurgical slag from liquid metallurgical slag: the first auxiliary beam drives the plurality of the first drill rods and the plowing and breaking integrated teeth to descend, and the main beam drives the plurality of the first drill rods and the plowing and breaking integrated teeth to move horizontally through the pile of metallurgical slag in a solid-liquid mixed state on the fixed granulation tank, and the solid metallurgical slag larger than the gap between any two adjacent first drill rods is selected by the first drill rod;

[0035] Step S12, crushing the solid metallurgical slag: the first auxiliary beam drives the first drill rod and the plowing and breaking integrated teeth to move up and down to crush the selected solid metallurgical slag;

[0036] Step S13, liquid metallurgical slag is dispersed: the first auxiliary beam drives the first drill rods and the plowing and breaking integrated teeth to descend, and the main beam drives the first drill rods and the plowing and breaking integrated teeth to move horizontally, and step S13 is repeatedly performed until the liquid metallurgical slag is dispersed and solidified;

[0037] Step S14, slag discharge: the first auxiliary beam drives the first drill rods and the plowing and breaking integrated teeth to descend, the second auxiliary beam drives the second drill rods and the plowing and breaking integrated teeth to descend, and the main beam drives the first drill rods and the second drill rods to push the granulated metallurgical slag out of the fixed granulation tank.

[0038] In a third aspect, an embodiment of the present invention provides an efficient and energy-saving selective hot metallurgical slag granulation process, which is applied to a selective hot metallurgical slag granulation equipment described in the first aspect, and the process comprises the following steps:

[0039] Step S21, separating solid metallurgical slag from liquid metallurgical slag: the first auxiliary beam drives a plurality of first drill rods and the plowing and breaking integrated teeth to descend, the reciprocating translational granulation trough drives the metallurgical slag pile in a solid-liquid mixed state thereon to pass through the plurality of first drill rods and the plowing and breaking integrated teeth, and the plurality of first drill rods select the solid metallurgical slag larger than the gap between any two adjacent first drill rods;

[0040] Step S22, crushing the solid metallurgical slag: the first auxiliary beam drives the first drill rod and the plowing and breaking integrated teeth to move up and down to crush the selected solid metallurgical slag;

[0041] Step S23, liquid metallurgical slag is dispersed: the first auxiliary beam drives the first drill rods and the plowing and breaking integrated teeth to descend, the reciprocating translational granulation tank reciprocates horizontally, and step S23 is repeatedly performed until the liquid metallurgical slag is dispersed and solidified;

[0042] Step S24, slag discharge: the first sub-beam drives the first drill rods and the plow-breaker integrated teeth to descend, the second sub-beam drives the second drill rods and the plow-breaker integrated teeth to descend, the reciprocating translational granulation trough moves horizontally, and the granulated metallurgical slag is pushed out of the reciprocating translational granulation trough by the first drill rod and the second drill rod.

[0043] The beneficial technical effects of the above technical solution are:

[0044] The invention solves the problem of frequent jamming of the roller granulation process, and the operation rate of the metallurgical slag granulation production line is increased to more than 95%.

[0045] The present invention realizes separation of solid bulk slag from liquid slag. The solid bulk slag is crushed and granulated by using a drill rod plowing and integrated teeth to press down. The motive force of the granulation and crushing method of this embodiment is the direct downward pressure of the hydraulic cylinder (the pressure can reach 600kN), which greatly improves the granulation efficiency and is more accurate and energy-saving.

[0046] The upper slag plowing teeth of the integrated plowing teeth of the present invention are subjected to less force when discretely separating liquid metallurgical slag; the lower slag crushing teeth of the integrated plowing teeth form point contact with the solid metallurgical slag when crushing solid metallurgical slag, and the crushing pressure is greater (the pressure reaches 1000-1500Mpa), which is more efficient.

[0047] The single set of the present invention can process metallurgical slag with a capacity of 500,000 tons / year, which is nearly 100% higher than the traditional roller crushing (250,000-300,000 tons / year).

[0048] The selective granulation process and equipment provided by the present invention greatly reduce investment and operation costs, and the power of the selective granulation machine is only 30kw. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0050] Figure 1 It is a schematic diagram of the structure of a highly efficient and energy-saving selective hot metallurgical slag granulation equipment implemented by the present invention;

[0051] Figure 2 is a structural schematic diagram of a selective granulator according to an embodiment of the present invention;

[0052] Figure 3 It is a side view of a highly efficient and energy-saving selective hot metallurgical slag granulation equipment implemented by the present invention;

[0053] Figure 4A It is a stereoscopic diagram of a plowing and breaking integrated tooth implemented by the present invention;

[0054] Figure 4B It is a top view of a plowing and breaking integrated tooth implemented by the present invention;

[0055] Figure 5A It is a side view of a plowing and breaking integrated tooth implemented by the present invention;

[0056] Figure 5B It is a front view of a plowing and breaking integrated tooth implemented by the present invention;

[0057] Figure 6 It is a structural schematic diagram of a drill rod implemented by the present invention;

[0058] Figure 7 It is a structural schematic diagram of a reciprocating translational granulator implemented by the present invention;

[0059] Figure 8 It is a structural schematic diagram of a reciprocating translation type granulating tank implemented by the present invention;

[0060] Fig. 9 It is a schematic diagram of the effective process of a highly efficient and energy-saving selective hot metallurgical slag granulation equipment implemented by the present invention;

[0061] Fig.10 This is the first process flow chart of the highly efficient and energy-saving selective hot metallurgical slag granulation implemented by the present invention;

[0062] Fig.11 This is a process flow chart of the second highly efficient and energy-saving selective hot metallurgical slag granulation process implemented by the present invention.

[0063] Description of Figure Numbers:

[0064] 1. Selective granulator; 1-1. Main beam; 1-1-1. First guide sleeve; 1-2. First auxiliary beam; 1-2-1. Second guide sleeve; 1-3. Second auxiliary beam; 1-4. First drill rod; 1-5. Second drill rod; 1-6. Plowing and breaking integrated teeth; 1-6-1. Plowing slag teeth; 1-6-2. Slag crushing teeth; 1-7. Wheel-rail trolley; 1-7-1. Trolley; 1-7-2. Track; A. Water inlet; B. Water outlet; C. Water inlet pipe;

[0065] 2. Granulating trough; 2-1. Bottom plate; 2-2. Guardrail; 2-3. Support wheel; 2-4. Transmission device. DETAILED DESCRIPTION

[0066] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In the detailed description below, many specific details are proposed in order to provide a comprehensive understanding of the present invention. However, it is obvious to those skilled in the art that the present invention can be implemented without some of these specific details. The following description of the embodiments is only to provide a better understanding of the present invention by illustrating examples of the present invention. In the drawings and the following description, at least part of the known structures and technologies are not shown in order to avoid unnecessary ambiguity of the present invention; and, for clarity, the size of some structures may be exaggerated. In addition, the features, structures or characteristics described below may be combined in one or more embodiments in any suitable manner.

[0067] Figure 1 This is a schematic diagram of the structure of a highly efficient and energy-saving selective hot metallurgical slag granulation equipment implemented by the present invention. Figure 2 is a structural schematic diagram of a selective granulator according to an embodiment of the present invention, Figure 3 1 is a side view of a highly efficient and energy-saving selective hot metallurgical slag granulation equipment implemented by the present invention. Figures 1 to 3 As shown, the equipment includes a selective granulator 1, which includes a main beam 1-1, a first sub-beam 1-2, a second sub-beam 1-3 and a plurality of plowing and breaking integrated teeth 1-6; the main beam 1-1 is a box-shaped structure with a downward groove on the upper end surface, and a plurality of first guide sleeves 1-1-1 are arranged at the bottom of the box-shaped structure; the first sub-beam 1-2 and the second sub-beam 1-3 are both located in the groove, and the second sub-beam 1-3 is located directly above the first sub-beam 1-2; the first sub-beam 1-2 is crossed Alternatively, a plurality of second guide sleeves 1-2-1 and a plurality of first drill rods 1-4 are provided; the second sub-beam 1-3 is provided with a plurality of second drill rods 1-5, and the positions of the plurality of second drill rods 1-5 correspond to those of the second guide sleeve 1-2-1; the first drill rod 1-4 passes downward through the first guide sleeve 1-1-1 and is connected to the integrated plowing and breaking tooth 1-6, and the second drill rod 1-5 passes downward through the second guide sleeve 1-2-1 and the first guide sleeve 1-1-1 in sequence and is connected to the integrated plowing and breaking tooth 1-6.

[0068] Specifically, the equipment is a selective hot metallurgical slag granulation equipment, comprising a selective granulator 1, which includes a main beam 1-1, a first sub-beam 1-2, a second sub-beam 1-3, a plurality of first drill rods 1-4, a plurality of second drill rods 1-5 and a plowing tooth 1-6, wherein the main beam 1-1 is a long strip structure with a downward groove on the upper end face, the first sub-beam 1-2 and the second sub-beam 1-3 are located in the main material groove of the main beam 1-1, and the second sub-beam 1-3 is located above the first sub-beam 1-2, a plurality of second guide sleeves 1-2-1 are arranged on the first sub-beam 1-2, the first drill rod 1-4 and the second guide sleeve 1-2-1 are arranged alternately, the second sub-beam 1-3 is located directly above the first sub-beam 1-2, and a plurality of second drill rods 1-5 are arranged below the second sub-beam 1-3, and the positions of the second drill rods 1-5 correspond one to one with the second guide sleeves 1-2-1. The first drill rod 1-4 passes downward through the first guide sleeve 1-1-1 and is connected to the plowing and breaking integrated tooth 1-6, and the second drill rod 1-5 passes downward through the second guide sleeve 1-2-1 and the first guide sleeve 1-1-1 in sequence and is connected to the plowing and breaking integrated tooth 1-6.

[0069] The embodiment of the present invention separates solid metallurgical slag from liquid metallurgical slag through a plurality of first drill rods 1-4. After the solid metallurgical slag larger than the gap between any two adjacent first drill rods 1-4 is selected, the first auxiliary beam 1-2 drives the first drill rod 1-4 to move up and down to crush the solid metallurgical slag. The first auxiliary beam 1-2 drives the first drill rod 1-4 to descend, and the main beam 1-1 drives the plurality of first drill rods 1-4 to move horizontally. This action is repeated until the liquid metallurgical slag is discretely separated and solidified. After the liquid metallurgical slag is discretely separated and solidified, the first drill rod 1-4 cooperates with the second drill rod 1-5 to remove the slag. The plowing and breaking integrated teeth 1-6 of the embodiment of the present invention are installed at the bottom ends of the first drill rod 1-4 and the second drill rod 1-5, and form an integral crushing structure with the bottom ends of the first drill rod 1-4 and the second drill rod 1-5. The first auxiliary beam 1-2 and the second auxiliary beam 1-3 drive the plurality of integral crushing structures to perform hot metallurgical slag granulation treatment. The structure is simple and easy to install and maintain.

[0070] In the embodiment of the present invention, since the size of some solid metallurgical slag is larger than the gap between two adjacent first drill rods 1-4, the solid metallurgical slag is first screened out by the first drill rods 1-4, and the solid metallurgical slag is uniformly crushed and granulated, which can ensure efficient dispersion of liquid slag; and in the slag discharge process, in order to improve the slag discharge efficiency, the present application cooperates with the first drill rod 1-4 and the second drill rod 1-5 to discharge slag, and since the distance between any two drill rods becomes smaller, the slag discharge efficiency is greatly improved; this embodiment not only solves the problem of jamming caused by mixed crushing and granulation of solid metallurgical slag and liquid metallurgical slag in the prior art, but also can increase the operating rate of the metallurgical slag granulation production line to more than 95%, while greatly reducing the energy consumption of metallurgical slag granulation.

[0071] In addition, in the prior art, the three sets of actuators for crushing, slag plowing and slag pushing are arranged side by side, resulting in large equipment footprint, heavy equipment weight, large investment, complex transmission, many fault points and difficult maintenance. In the actual production line, there are multiple devices running at the same time. When the size of the metallurgical slag granulation equipment is reduced and the floor space is reduced, the floor space of the entire production line is reduced. At the same time, as the size of a single device is reduced, the distance between any two adjacent devices is increased, making the lateral effective stroke of each device larger, such as Fig. 9 As shown, as an example, the size of the original equipment is 6.5 meters, so within the total stroke of 13 meters, the effective stroke of the original equipment is only 6.5 meters. After the first and second sub-beams are set up and down in this embodiment, the size of the new equipment is 3 meters. Then, under the condition that the total stroke is 13 meters (the equipment reciprocates during operation, the maximum distance of movement to the left is the left limit, the maximum distance of movement to the right is the right limit, and the distance between the left limit and the right limit is the total stroke), the effective stroke of the new equipment becomes 10 meters. After the stroke becomes larger, the area of ​​solid-liquid mixed metallurgical slag paving increases, which is conducive to heat exchange and cooling. The second sub-beam 1-3 of this embodiment is set directly above the first sub-beam 1-2. This overlapping sub-beam design reduces the lateral size of the equipment, which not only saves the working space of the equipment, but also saves energy efficiently and reduces costs.

[0072] like Figure 4A , Figure 4B , Figure 5A and Figure 5B As shown, in some embodiments, the upper part of the plowing and breaking integrated tooth 1-6 is a plowing and slag tooth 1-6-1, and the lower part of the plowing and breaking integrated tooth 1-6 is a slag crushing tooth 1-6-2; wherein the plowing and slag tooth 1-6-1 is a mixture of a truncated cone with a small upper part and a large lower part and a prism, and the slag crushing tooth 1-6-2 is a pyramid structure with a large upper part and a small lower part, and the large end surface of the plowing and slag tooth 1-6-1 is coplanar with the large end surface of the slag crushing tooth 1-6-2, and the plowing and slag tooth 1-6-1 and the slag crushing tooth 1-6-2 adopt Integrally cast or welded; the plowing and breaking integrated tooth 1-6 is recessed downward from the small end surface of the plowing tooth 1-6-1 by a certain distance to form a cavity; the edges of the plowing tooth 1-6-1 and the edges of the crushing slag tooth 1-6-2 together constitute the plow blade and the plow tip, and the plow blade and the plow tip form line contact and point contact with the metallurgical slag when discrete metallurgical slag; the upper end of the plowing tooth 1-6-1 is connected to the first drill rod 1-4 and the second drill rod 1-5 by bolts.

[0073] The plowing and breaking integrated teeth 1-6 of this embodiment are divided into two parts, one of which is the plowing slag teeth 1-6-1, which can efficiently disperse liquid slag, and the other is the crushing slag teeth 1-6-2, which can efficiently crush solid slag. The upper part of the plowing and breaking integrated teeth 1-6 of the embodiment of the present invention is the plowing slag teeth 1-6-1, and the lower part is the crushing slag teeth 1-6-2, which improves the crushing efficiency and granulation efficiency.

[0074] Specifically, the plow tooth 1-6-1 is a mixture of a small top and a large bottom truncated cone and a prism, including a plow surface and a plow blade. The plow tooth 1-6-2 is connected to the drill rod by bolts, which has the effect of crushing and turning the slag while dispersing the metallurgical slag. The plow tooth 1-6-1 and the lower slag crushing tooth 1-6-2 can be integrally cast or welded. The surface of the plow tooth 1-6-1 and the slag crushing tooth 1-6-2 is welded with high temperature and wear resistant materials, and the surface is smooth, which can improve the high temperature wear resistance. The plowing and crushing teeth do not need to be replaced, and regular welding is required after wear.

[0075] In addition, through optimization, uniform diversion of metallurgical slag can be achieved, and the flow direction of metallurgical slag can be guided, which has a diversion function; the shape of the plow tooth 1-6-1 is beneficial to improving the discrete solidification efficiency of liquid slag; in addition, the surface of the plow tooth 1-6-1 is subjected to special heat treatment processes such as quenching, plating, ceramic spraying, etc. after surfacing to improve wear resistance, corrosion resistance or high temperature performance, which can extend the service life, especially in the scouring environment of high-temperature metallurgical slag. Through this specific design, the accumulation of attachments can be reduced to achieve a self-cleaning effect.

[0076] Furthermore, the plow-breaking tooth 1-6 of the present embodiment is a bidirectional plow-breaking tooth, which has a transverse plow point and two upper and lower plow blades in the direction of discrete metallurgical slag. The plow point forms point contact with the metallurgical slag, and the plow blade forms line contact with the metallurgical slag; while the existing ordinary plowshare has only one sharp point and one plow blade (or a curved surface or a flat surface) on the top, and the lower surface is a flat surface or a curved surface, which causes the lower surface to form surface contact with the metallurgical slag, increases friction and makes it easy to get stuck. In addition, the lower part of the structure of the plow-breaking tooth 1-6 of the present embodiment forms a conical tip, which is beneficial to the dispersion of liquid slag and the downward pressure to crush solid metallurgical slag.

[0077] The base material of the plowing and breaking teeth 1-6 of the embodiment of the present invention is heat-resistant alloy steel, and the surface is welded with high-temperature resistant and wear-resistant alloy material and then subjected to special heat treatment. Stability can be maintained at a specific high temperature (such as 1500°C). The design of the embodiment of the present invention can reduce metallurgical slag splashing, adjust flow rate or flow direction, and improve the overall rigidity, strength or stability of the plowing and breaking teeth, and can enable the plowing and breaking teeth to withstand high-speed impact or extrusion of metallurgical slag.

[0078] The upper slag plowing teeth of the integrated plowing teeth 1-6 of the embodiment of the present invention are subjected to less force when discretizing and separating liquid metallurgical slag because they form point contact or line contact with the metallurgical slag. The lower slag crushing teeth 1-6-2 of the integrated plowing teeth 1-6 are subjected to greater force when crushing solid metallurgical slag because they form point contact with the solid metallurgical slag. The crushing pressure is greater and the efficiency is higher. In addition, the tip of the slag crushing tooth 1-6-2 of the present embodiment is welded with a highly wear-resistant and heat-resistant material, such as tungsten carbide.

[0079] like Figure 6 As shown, in some embodiments, the central axes of the first drill rod 1-4 and the second drill rod 1-5 are in the same vertical plane and are parallel, and both have hollow structures inside; the gap between any two adjacent first drill rods 1-4 is 300mm to 800mm, and the gap between any two adjacent first drill rods 1-4 and second drill rods 1-5 is 10mm to 200mm; preferably, the gap between any two adjacent first drill rods 1-4 of the embodiment of the present invention is 500mm, and the size of the gap between any two adjacent first drill rods 1-4 and second drill rods 1-5 is 80mm, so as to ensure the effective crushing of solid metallurgical slag and the efficient discrete separation of liquid metallurgical slag.

[0080] The ends of the first drill rod 1-4 and the second drill rod 1-5 are respectively provided with a water inlet A and a water outlet B. The first drill rod 1-4 and the second drill rod 1-5 are pre-buried with a water inlet pipe C. One end of the water inlet pipe C is connected to the water inlet A, and the other end extends to the cavity of the plowing and breaking integrated tooth 1-6. The water inlet A is connected to the water inlet pipe C, and the cooling water enters the water inlet pipe C from the water inlet A. After passing through the cavity of the plowing and breaking integrated tooth 1-6, the water level begins to rise, and then flows out from the water outlet B to complete the circulation cooling.

[0081] The embodiment of the present invention can not only fully select the large solid slag larger than the gap size between any two adjacent first drill rods 1-4, but also fully push the granulated metallurgical slag out of the granulation tank 2 through the cooperation of the first drill rod 1-4 and the second drill rod 1-5, thereby greatly improving the work efficiency.

[0082] In some embodiments, the first sub-beam 1-2 and the second sub-beam 1-3 are respectively provided with corresponding first sub-beam lifting drive devices and second sub-beam lowering drive devices, and the central axes of the first sub-beam lifting drive device and the second sub-beam lowering drive device are located in the vertical plane where the central axes of the first drill rod 1-4 and the second drill rod 1-5 are located and are parallel to each other; one end of the first sub-beam lifting drive device is connected to the first sub-beam 1-2, and the other end of the first sub-beam lifting drive device is connected to the top surface of the main beam 1-1; one end of the second sub-beam lifting drive device is connected to the second sub-beam 1-3, and the other end of the second sub-beam lifting drive device is connected to the top surface of the main beam 1-1; in this embodiment, the first sub-beam lifting drive device and the second sub-beam lowering drive device are both hydraulic cylinders, which realize the lifting and moving of the plowing and breaking integrated teeth 1-6, and improve the automation degree and work efficiency of the equipment.

[0083] The embodiment of the present invention fully realizes the separation of solid bulk slag and liquid slag. The solid bulk slag is crushed and granulated by pressing down the plowing and breaking integrated teeth 1-6 under the first drill rod 1-4. The motive force of this granulation and crushing method is the direct downward pressure of the hydraulic cylinder, which greatly improves the granulation efficiency and is more accurate and energy-saving.

[0084] In some embodiments, the equipment further comprises a granulation tank 2; the granulation tank 2 is arranged below the selective granulator 1, and comprises a bottom plate 2-1 and a guard plate 2-2 arranged in the length direction of the bottom plate 2-1.

[0085] The granulation tank 2 in this embodiment can be a reciprocating translational granulation tank or a fixed granulation tank, which can be selected according to the type of the selective granulator 1, thereby improving the flexibility and adaptability of the equipment;

[0086] The selective granulator and the granulation tank have the following two combination modes: Mode 1: When the selective granulator 1 is a reciprocating translation type granulator, the granulation tank 2 is a fixed granulation tank; the selective granulator 1 also includes a wheel-rail type trolley 1-7, the wheel-rail type trolley 1-7 includes a trolley 1-7-1 and a track 1-7-2, the track 1-7-2 is arranged on both sides of the length direction of the fixed granulation tank 2 and is fixedly connected to the ground foundation, the trolley 1-7-1 is located on the track 1-7-2, the main beam 1-1 spans the granulation tank 2 and is connected to the wheel-rail type trolley 1-7 to realize the reciprocating translation of the selective granulator 1 in the length direction of the fixed granulation tank 2;

[0087] Mode 2: When the selective granulator 1 is a fixed granulator, the granulation trough 2 is a reciprocating granulation trough; the granulation trough 2 also includes a plurality of groups of supporting wheels 2-3 and a transmission device 2-4, and the plurality of groups of supporting wheels 2-3 and the transmission device 2-4 are fixedly connected to the ground foundation, the plurality of groups of supporting wheels 2-3 are arranged on both sides below the bottom plate 2-1 and support the bottom plate 2-1, and the transmission device 2-4 drives the granulation trough 2 to realize reciprocating translation on the plurality of groups of supporting wheels 2-3.

[0088] like Figure 7As shown, when the selective granulator 1 is a reciprocating translational granulator, the selective granulator 1 also includes a wheel-rail trolley 1-7, the wheel-rail trolley 1-7 includes a trolley 1-7-1 and a track 1-7-2, the track 1-7-2 is arranged on both sides of the length direction of the fixed granulation tank 2 and is fixedly connected to the ground foundation, the trolley 1-7-1 is located on the track 1-7-2, the main beam 1-1 spans the fixed granulation tank 2 and is connected to the wheel-rail trolley 1-7 to realize the reciprocating translation of the selective granulator 1 in the length direction of the fixed granulation tank 2. In this embodiment, the fixed granulation tank can be either a concrete structure or a steel structure. The reciprocating translational granulator also includes a wheel-rail trolley and a track, the two tracks are arranged in parallel on the outer side of the guardrail 2-2 of the fixed granulation tank and are fixedly connected to the ground foundation, the trolley is placed on the track, and the selective granulator 1 spans the fixed granulation tank 2 and is fixedly connected to the trolley.

[0089] like Figure 8 As shown, when the granulation trough 2 is a reciprocating translation type granulation trough, when the granulation trough is a reciprocating translation type granulation trough, the granulation trough also includes a plurality of groups of supporting wheels 2-3 and a transmission device 2-4, the plurality of groups of supporting wheels 2-3 are arranged on both sides below the bottom plate 2-1, and the transmission device 2-4 drives the granulation trough 2 to reciprocate on the supporting wheels 2-3.

[0090] In this embodiment, the main body of the reciprocating translational granulation trough can be a steel structure, which includes, in addition to the bottom plate 2-1 and the guardrail 2-2, several groups of supporting wheels and a transmission device. The several groups of supporting wheels are located below the bottom plate 2-2 of the granulation trough 2 and are divided into two rows to support the bottom plate 2-2 of the granulation trough 2. The transmission device can be a single-sided transmission or a double-sided transmission, and the transmission form can be a rack and pinion.

[0091] In some embodiments, the equipment further comprises a hydraulic overload protection system, wherein the hydraulic overload protection system is connected to the first sub-beam lifting drive device and the second sub-beam lifting drive device respectively, and when the system pressure of crushing solid metallurgical slag or discrete liquid metallurgical slag exceeds the protection limit, the first sub-beam lifting drive device and the second sub-beam lifting drive device are quickly unloaded and raised to protect the equipment;

[0092] The hydraulic overload protection system comprises:

[0093] A pressure detection unit, used to detect the pressure value of the first auxiliary beam according to the system pressure of the hydraulic protection system; when the pressure value is greater than a set pressure threshold, the hydraulic pressure automatically controls the lifting operation of the lifting drive device;

[0094] a displacement detection unit, configured to detect a displacement value of the first sub-beam according to a displacement sensor provided on the first sub-beam;

[0095] In the embodiment of the present invention, appropriate protection parameters, such as pressure thresholds, displacement thresholds, etc., can be set according to the requirements of the equipment and working conditions. When the sensor detects that the pressure or displacement exceeds the set protection parameters, an alarm is triggered and the movement of the sub-beam lifting device is stopped. That is, when encountering cold steel or unable to break, the hydraulic cylinder automatically lifts to protect the equipment. In addition, a delay function can be set to avoid false triggering of protection. Before actual operation, sufficient testing and debugging are carried out to ensure the reliability and accuracy of the hydraulic automatic protection system of the sub-beam lifting drive device; the hydraulic automatic protection system of the sub-beam lifting device is regularly maintained and inspected to ensure the normal operation of the sensor and the accuracy of the protection parameters. The embodiment of the present invention improves the safety and reliability of the equipment by performing hydraulic automatic protection on the sub-beam lifting device.

[0096] A current detection unit is used to use a current sensor to monitor the current of the reciprocating-translational granulation tank or the reciprocating-translational granulation machine in real time; when the current value exceeds a preset current threshold, the hydraulic control system automatically controls the operation of raising the lifting drive device;

[0097] Specifically, the current sensor can be used in this embodiment to monitor the current of the reciprocating translational granulation tank or the reciprocating translational granulator in real time. The current sensor can be installed at the power input terminal, the motor power line or the main power line. If the current sensor is installed at the power input terminal, the current change of the entire device can be detected. If a separate motor is equipped, the current sensor can be installed on the power line of the motor to detect the current change of the motor. If the device has multiple power lines, the current sensor can be installed on the main power line, so that the current change of the entire device can be detected. A comparator can also be set in this embodiment to compare the detected current with the set equipment protection value through the comparator. When the current exceeds the protection value, the comparator outputs a signal, and the hydraulic control system triggers the automatic lifting operation of the hydraulic cylinder according to this signal.

[0098] In addition, the embodiment can also automatically control the descent of the first sub-beam according to the operating current of the granulating tank or the selective granulating machine to control the depth of the first drill rod penetrating into the metallurgical slag pile; the embodiment can also establish a feedback mechanism to ensure that the descent depth of the first sub-beam matches the change of the operating current, for example, different current values ​​correspond to different depths. The position of the first sub-beam can also be monitored in real time by a displacement sensor or other measuring equipment, and the feedback signal can be fed back to the control system.

[0099] The monitoring and alarm unit is used to monitor the working status of the lifting device drive in real time, and when the lifting drive device is abnormal, an alarm is issued and fault information is displayed.

[0100] This embodiment uses a monitoring system to monitor the current and the status of the hydraulic cylinder in real time. When the current reaches a protection value or other abnormal conditions occur, the monitoring system can issue an alarm or display fault information so that timely measures can be taken.

[0101] In some embodiments, the equipment further includes infrared monitoring equipment and a control system for real-time monitoring of the state of the metallurgical slag before the metallurgical slag enters the granulation tank or the selective granulator, and the control system selects different processing modes according to the state of the metallurgical slag, and the processing modes include a crushing mode and a discrete mode. At the same time, the control system interlocks the system pressure signal of the hydraulic overload protection system, the current signal of the hydraulic pump, and the position signal of the first auxiliary beam 1-2, and dynamically adjusts the descending height of the first drill rod 1-4 and the plowing and breaking integrated tooth 1-6 according to the pressure signal and the current signal.

[0102] In this embodiment, before the metallurgical slag enters the granulation tank or the translational granulator, an infrared monitoring device or other sensors can be installed to monitor the state of the metallurgical slag in real time. According to the detection results, it is judged whether there are large pieces of solid slag in the metallurgical slag, and whether the size of the solid slag is smaller than the drill rod gap. According to the judgment result of the recognition program, the control equipment is switched between the crushing mode and the discrete mode (slag plowing mode), which can not only realize automatic control, but also make the equipment more efficient and energy-saving.

[0103] For example, the infrared monitoring equipment detects the state of metallurgical slag in real time and transmits the detection signal to the control system. After receiving the detection signal, the control system runs the recognition program for analysis and judgment. If the recognition program determines that there is no large solid slag in the metallurgical slag or the size of the solid slag is smaller than the gap between the drill rods, the control system will send a command to switch to discrete mode (slag plowing mode). In discrete mode, the equipment will work in the manner of plowing slag to disperse and discharge the metallurgical slag. If the recognition program determines that there is a large solid slag in the metallurgical slag and the size is larger than the gap between adjacent drill rods, the control system will remain in the crushing mode and start the crushing mechanism to crush the metallurgical slag. It should be noted that the accuracy and reliability of infrared monitoring and recognition technology may be affected by many factors, such as the physical properties of metallurgical slag, the installation position and accuracy of the sensor, etc. In practical applications, sufficient testing and debugging may be required to ensure the accuracy and stability of the recognition program. In addition, it is also possible to consider combining other sensors or monitoring technologies, such as visual sensors, ultrasonic sensors, etc., to improve the recognition ability of the metallurgical slag state.

[0104] Fig.10 The first process flow chart of the selective hot metallurgical slag granulation with high efficiency and energy saving implemented in the present invention is as follows: Fig.10 As shown, when the selective granulator 1 is a reciprocating granulator, the granulator tank 2 is a fixed granulator, and the selective hot metallurgical slag granulation process is as follows:

[0105] Step S11, separating solid metallurgical slag from liquid metallurgical slag: the first auxiliary beam 1-2 drives the first drill rods 1-4 and the plowing and breaking teeth 1-6 to descend, and the main beam 1-1 drives the first drill rods 1-4 and the plowing and breaking teeth 1-6 to move horizontally through the pile of metallurgical slag in a solid-liquid mixed state on the fixed granulation tank, and the solid metallurgical slag larger than the gap between any two adjacent first drill rods 1-4 is selected through the first drill rods 1-4;

[0106] Step S12, crushing the solid metallurgical slag: the first auxiliary beam 1-2 drives the first drill rod 1-4 and the plowing and breaking integrated teeth 1-6 to move up and down to crush the solid metallurgical slag selected by the drill rod;

[0107] Step S13, liquid metallurgical slag is dispersed: the first auxiliary beam 1-2 drives the first drill rods 1-4 and the plowing teeth 1-6 to descend, and the main beam 1-1 drives the first drill rods 1-4 and the plowing teeth 1-6 to move horizontally, and step S13 is repeatedly performed until the liquid metallurgical slag is dispersed and solidified;

[0108] Step S14, slag discharge: the first sub-beam 1-2 drives the first drill rods 1-4 and the plowing and breaking teeth 1-6 to descend, the second sub-beam 1-3 drives the second drill rods 1-5 and the plowing and breaking teeth 1-6 to descend, and the main beam 1-1 drives the first drill rods 1-4 and the second drill rods 1-5 to push the granulated metallurgical slag out of the fixed granulation tank.

[0109] Fig.11 The second selective hot metallurgical slag granulation process flow chart of the present invention is as follows: Fig.11 As shown, in some embodiments, when the selective granulator 1 is a fixed granulator, the granulator tank 2 is a reciprocating granulator tank. At this time, the metallurgical slag treatment process is as follows:

[0110] Step S21, separating the solid metallurgical slag from the liquid metallurgical slag: the first auxiliary beam 1-2 drives the plurality of first drill rods 1-4 and the plowing and breaking integrated teeth 1-6 to descend, the reciprocating translational granulation trough drives the metallurgical slag pile in a solid-liquid mixed state thereon to pass through the plurality of first drill rods 1-4 and the plowing and breaking integrated teeth 1-6, and the plurality of first drill rods 1-4 select the solid metallurgical slag that is larger than the gap between any two adjacent first drill rods 1-4;

[0111] Step S22, crushing the solid metallurgical slag: the first auxiliary beam 1-2 drives the first drill rod 1-4 and the plowing and breaking integrated teeth 1-6 to move up and down to crush the solid metallurgical slag selected by the drill rod;

[0112] Step S23, liquid metallurgical slag is dispersed: the first auxiliary beam 1-2 drives the first drill rods 1-4 and the plowing teeth 1-6 to descend, and the reciprocating translation granulation tank reciprocates horizontally, and step S23 is repeatedly performed until the liquid metallurgical slag is dispersed and solidified;

[0113] Step S24, slag discharge: the first sub-beam 1-2 drives the first drill rods 1-4 and the plowing and breaking teeth 1-6 to descend, the second sub-beam 1-3 drives the second drill rods 1-5 and the plowing and breaking teeth 1-6 to descend, the reciprocating translational granulation trough moves horizontally, and the granulated metallurgical slag is pushed out of the reciprocating translational granulation trough through the first drill rod 1-4 and the second drill rod 1-5.

[0114] In the prior art, the transmission of the three sets of actuators for crushing, plowing and pushing slag adopts a crank slider mechanism, which has high friction, low transmission efficiency and easy wear. After wear, gaps appear in the moving pairs and deviations appear in the motion trajectory. When crushing, encountering unbreakable metallurgical slag can easily cause equipment overload failure or even damage the equipment. The process control of the three sets of actuators for crushing, plowing and pushing slag is cumbersome. When pushing slag, the slag pushing plate has high slag pushing resistance, is easy to get stuck, and is easy to deform. It can be seen that each actuator in the prior art is equipped with a transmission mechanism, which greatly increases the failure rate of the equipment. In the present application, a hydraulic system is uniformly used as the drive, and a hydraulic cylinder is used to complete the lifting and lowering movement of the sub-beam, which greatly reduces the failure rate. In addition, in the present embodiment, both the metallurgical slag granulation equipment of the fixed granulation and the reciprocating granulation tank, and the metallurgical slag granulation equipment of the reciprocating granulation machine and the fixed granulation tank are of an integrated structure, which not only streamlines the equipment and simplifies the control process, but also saves space, increases the effective stroke, and improves the cooling efficiency by using two sub-beams, and has a hydraulic protection system to protect the equipment. At the same time, the infrared monitoring equipment and the control system are used in conjunction, which is not only energy-efficient but also can increase the service life of the equipment.

[0115] An efficient and energy-saving selective hot metallurgical slag granulation process according to an embodiment of the present invention comprises four steps of separating solid metallurgical slag from liquid metallurgical slag, crushing solid metallurgical slag, dispersing liquid metallurgical slag and slag discharge, thereby achieving efficient granulation of metallurgical slag.

[0116] The embodiment of the present invention solves the problem of the roller granulation process being stuck, and the operation rate of the metallurgical slag granulation production line is increased to more than 95%.

[0117] The embodiment of the present invention realizes separation of solid bulk slag from liquid slag. The solid bulk slag is crushed and granulated by pressing down with the drill rod crushing teeth 1-6. The driving force of this granulation and crushing method is the direct downward pressure of the hydraulic cylinder, which greatly improves the granulation efficiency and is more accurate and energy-saving.

[0118] The upper slag plow teeth of the integrated plow teeth 1-6 of the embodiment of the present invention form line contact and point contact with the metallurgical slag when discretely separating liquid metallurgical slag, so they are subjected to less force; the lower slag plow teeth 1-6-2 of the integrated plow teeth 1-6 form point contact with the solid metallurgical slag when crushing solid metallurgical slag, so the crushing pressure is greater and more efficient.

[0119] The selective granulation process and equipment provided by the embodiments of the present invention greatly reduce investment and operation costs.

[0120] In the description of the embodiments of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "upper, lower, inner and outer" are based on the orientations or positional relationships 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 limiting the present invention. In addition, the terms "first, second or third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0121] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed, connected, 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 also be a mechanical connection, an electrical connection or a direct connection, or it can be indirectly connected 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.

[0122] Although the present invention has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced by equivalents without departing from the scope of the present invention. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A highly efficient and energy-saving selective hot metallurgical slag granulation equipment, characterized in that: The equipment comprises a selective granulator (1), wherein the selective granulator (1) comprises a main beam (1-1), a first auxiliary beam (1-2), a second auxiliary beam (1-3) and a plurality of plowing and breaking integrated teeth (1-6); The main beam (1-1) is a box-shaped structure with a downward groove on the upper end surface, and a plurality of first guide sleeves (1-1-1) are arranged at the bottom of the box-shaped structure; The first sub-beam (1-2) and the second sub-beam (1-3) are both located in the groove, and the second sub-beam (1-3) is located directly above the first sub-beam (1-2); The first sub-beam (1-2) is alternately provided with a plurality of second guide sleeves (1-2-1) and a plurality of first drill rods (1-4); the second sub-beam (1-3) is provided with a plurality of second drill rods (1-5), and the positions of the plurality of second drill rods (1-5) and the second guide sleeve (1-2-1) correspond to each other; The first drill rod (1-4) passes downward through the first guide sleeve (1-1-1) and is connected to the integrated plowing and breaking tooth (1-6), and the second drill rod (1-5) passes downward through the second guide sleeve (1-2-1) and the first guide sleeve (1-1-1) in sequence and is connected to the integrated plowing and breaking tooth (1-6).

2. The highly efficient and energy-saving selective hot metallurgical slag granulation equipment according to claim 1, characterized in that: The upper part of the plowing and breaking integrated tooth (1-6) is a plowing and slag tooth (1-6-1), and the lower part of the plowing and breaking integrated tooth (1-6) is a slag crushing tooth (1-6-2); wherein the plowing and slag tooth (1-6-1) is a mixture of a truncated cone and a prism with a small upper part and a large lower part, and the slag crushing tooth (1-6-2) is a pyramid structure with a large upper part and a small lower part, and the large end surface of the plowing and slag tooth (1-6-1) is coplanar with the large end surface of the slag crushing tooth (1-6-2), and the plowing and slag tooth (1-6-1) and the slag crushing tooth (1-6-2) are formed by integral casting or welding; The plowing and breaking integrated tooth (1-6) is concave downward from the small end surface of the plowing slag tooth (1-6-1) by a certain distance to form a cavity; the edge of the plowing slag tooth (1-6-1) and the edge of the slag crushing tooth (1-6-2) together form a plow blade and a plow tip, and the plow blade and the plow tip form line contact and point contact with the metallurgical slag when the metallurgical slag is dispersed; The upper end of the plow tooth (1-6-1) is connected to the first drill rod (1-4) and the second drill rod (1-5) by bolts.

3. The highly efficient and energy-saving selective hot metallurgical slag granulation equipment according to claim 1, characterized in that: The central axes of the first drill rod (1-4) and the second drill rod (1-5) are in the same vertical plane and are parallel, and both have hollow structures inside; the gap between any two adjacent first drill rods (1-4) is 300 mm to 800 mm, and the gap between any two adjacent first drill rods (1-4) and second drill rods (1-5) is 10 mm to 200 mm; The ends of the first drill rod (1-4) and the second drill rod (1-5) are respectively provided with a water inlet (A) and a water outlet (B); a water inlet pipe (C) is pre-buried inside the first drill rod (1-4) and the second drill rod (1-5); one end of the water inlet pipe (C) is connected to the water inlet (A), and the other end extends to the cavity of the plowing and breaking integrated tooth (1-6).

4. A highly efficient and energy-saving selective hot metallurgical slag granulation equipment according to any one of claims 1 to 3, characterized in that: The first sub-beam (1-2) and the second sub-beam (1-3) are respectively provided with a corresponding first sub-beam lifting drive device and a second sub-beam lowering drive device, and the central axes of the first sub-beam lifting drive device and the second sub-beam lowering drive device are located in a vertical plane where the central axes of the first drill rod (1-4) and the second drill rod (1-5) are located and are parallel to each other; One end of the first auxiliary beam lifting drive device is connected to the first auxiliary beam (1-2), and the other end of the first auxiliary beam lifting drive device is connected to the top surface of the main beam (1-1); One end of the second auxiliary beam lifting drive device is connected to the second auxiliary beam (1-3), and the other end of the second auxiliary beam lifting drive device is connected to the top surface of the main beam (1-1).

5. The highly efficient and energy-saving selective hot metallurgical slag granulation equipment according to claim 4, characterized in that: The equipment also includes a granulation tank (2); The granulation tank (2) is arranged below the selective granulator (1), and comprises a bottom plate (2-1) and guardrails (2-2) arranged on both sides of the bottom plate (2-1) in the length direction.

6. The highly efficient and energy-saving selective hot metallurgical slag granulation equipment according to claim 5, characterized in that: The selective granulator and granulator tank have the following two combination modes: Mode 1: When the selective granulator (1) is a reciprocating translational granulator, the granulation tank (2) is a fixed granulation tank; the selective granulator (1) further comprises a wheel-rail type trolley (1-7), the wheel-rail type trolley (1-7) comprises a trolley (1-7-1) and a track (1-7-2), the track (1-7-2) is arranged on both sides of the length direction of the fixed granulation tank (2) and is fixedly connected to the ground foundation, the trolley (1-7-1) is located on the track (1-7-2), the main beam (1-1) spans the granulation tank (2) and is connected to the wheel-rail type trolley (1-7) to realize the reciprocating translation of the selective granulator (1) in the length direction of the fixed granulation tank (2); Mode 2: When the selective granulator (1) is a fixed granulator, the granulation trough (2) is a reciprocating translation granulation trough; the granulation trough (2) further comprises a plurality of groups of supporting wheels (2-3) and a transmission device (2-4), the plurality of groups of supporting wheels (2-3) and the transmission device (2-4) are both fixedly connected to the ground foundation, the plurality of groups of supporting wheels (2-3) are arranged on both sides below the bottom plate (2-1) and support the bottom plate (2-1), and the transmission device (2-4) drives the granulation trough (2) to realize reciprocating translation on the plurality of groups of supporting wheels (2-3).

7. The highly efficient and energy-saving selective hot metallurgical slag granulation equipment according to claim 6, characterized in that: It also includes a hydraulic overload protection system; The hydraulic overload protection system is connected to the first sub-beam lifting drive device and the second sub-beam lifting drive device respectively, and when the system pressure of crushing solid metallurgical slag or discrete liquid metallurgical slag exceeds the protection limit, the first sub-beam lifting drive device and the second sub-beam lifting drive device are controlled to quickly unload and rise to protect the equipment; The hydraulic overload protection system comprises: A pressure detection unit, used to detect the pressure value of the first auxiliary beam according to the system pressure of the hydraulic protection system; when the pressure value is greater than a set pressure threshold, the hydraulic pressure automatically controls the lifting operation of the lifting drive device; a displacement detection unit, configured to detect a displacement value of the first sub-beam according to a displacement sensor provided on the first sub-beam; A current detection unit is used to use a current sensor to monitor the current of the reciprocating-translational granulation tank or the reciprocating-translational granulation machine in real time; when the current value exceeds a preset current threshold, the hydraulic control system automatically controls the operation of raising the lifting drive device; The monitoring and alarm unit is used to monitor the working status of the lifting device drive in real time, and when the lifting drive device is abnormal, an alarm is issued and fault information is displayed.

8. The highly efficient and energy-saving selective hot metallurgical slag granulation equipment according to claim 7, characterized in that: It also includes an infrared monitoring device and a control system for real-time monitoring of the state of the metallurgical slag before the metallurgical slag enters the granulation tank or the selective granulator, and the control system selects different processing modes according to the state of the metallurgical slag, and the processing modes include a crushing mode and a discrete mode; The control system interlocks the system pressure signal of the hydraulic overload protection system, the current signal of the hydraulic pump and the position signal of the first auxiliary beam (1-2), and dynamically adjusts the descending height of the first drill rod (1-4) and the plowing and breaking integrated tooth (1-6) according to the pressure signal and the current signal.

9. An efficient and energy-saving selective hot metallurgical slag granulation process, characterized in that: The process is applied to the selective hot metallurgical slag granulation equipment according to claim 8, and the process comprises the following steps: Step S11, separating solid metallurgical slag from liquid metallurgical slag: the first auxiliary beam (1-2) drives a plurality of the first drill rods (1-4) and the plowing and breaking integrated teeth (1-6) to descend, and the main beam (1-1) drives a plurality of the first drill rods (1-4) and the plowing and breaking integrated teeth (1-6) to move horizontally through a pile of metallurgical slag in a solid-liquid mixed state on a fixed granulation tank, and the solid metallurgical slag larger than a gap between any two adjacent first drill rods (1-4) is selected through the first drill rods (1-4); Step S12, crushing the solid metallurgical slag: the first auxiliary beam (1-2) drives the first drill rod (1-4) and the plowing and breaking integrated teeth (1-6) to move up and down to crush the selected solid metallurgical slag; Step S13, liquid metallurgical slag is dispersed: the first auxiliary beam (1-2) drives the plurality of the first drill rods (1-4) and the plowing and breaking integrated teeth (1-6) to descend, and the main beam (1-1) drives the plurality of the first drill rods (1-4) and the plowing and breaking integrated teeth (1-6) to move horizontally, and step S13 is repeatedly performed until the liquid metallurgical slag is dispersed and solidified; Step S14, slag discharge: the first auxiliary beam (1-2) drives a plurality of the first drill rods (1-4) and the plowing and breaking integrated teeth (1-6) to descend, the second auxiliary beam (1-3) drives a plurality of the second drill rods (1-5) and the plowing and breaking integrated teeth (1-6) to descend, and the main beam (1-1) drives the first drill rods (1-4) and the second drill rods (1-5) to push the granulated metallurgical slag out of the fixed granulation tank.

10. A highly efficient and energy-saving selective hot metallurgical slag granulation process, characterized in that: The process is applied to the selective hot metallurgical slag granulation equipment according to claim 8, and the process comprises the following steps: Step S21, separating the solid metallurgical slag from the liquid metallurgical slag: the first auxiliary beam (1-2) drives the plurality of first drill rods (1-4) and the plowing and breaking integrated teeth (1-6) to descend, the reciprocating translational granulation trough (2) drives the metallurgical slag pile in a solid-liquid mixed state thereon to pass through the plurality of first drill rods (1-4) and the plowing and breaking integrated teeth (1-6), and the plurality of first drill rods (1-4) select the solid metallurgical slag that is larger than the gap between any two adjacent first drill rods (1-4); Step S22, crushing the solid metallurgical slag: the first auxiliary beam (1-2) drives the first drill rod (1-4) and the plowing and breaking integrated teeth (1-6) to move up and down to crush the selected solid metallurgical slag; Step S23, liquid metallurgical slag is dispersed: the first auxiliary beam (1-2) drives the first drill rods (1-4) and the plowing and breaking integrated teeth (1-6) to descend, the reciprocating translational granulation tank reciprocates horizontally, and step S23 is repeatedly performed until the liquid metallurgical slag is dispersed, separated and solidified; Step S24, slag discharge: the first sub-beam (1-2) drives a plurality of the first drill rods (1-4) and the plowing and breaking integrated teeth (1-6) to descend, the second sub-beam (1-3) drives a plurality of the second drill rods (1-5) and the plowing and breaking integrated teeth (1-6) to descend, the reciprocating translational granulation trough moves horizontally, and the granulated metallurgical slag is pushed out of the reciprocating translational granulation trough by the first drill rod (1-4) and the second drill rod (1-5).

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