A device for preparing concrete aggregate by using vanadium-titanium smelting slag

Abstract

The application discloses a kind of equipment for preparing concrete aggregate by vanadium-titanium smelting slag, belongs to concrete aggregate production technical field, to solve the problem of complex production process of concrete aggregate in prior art, higher cost.This equipment of the application includes connecting groove, forming die, guide rail, air supply unit, spraying unit, discharge unit, crushing unit and grading unit;Forming die is placed on guide rail and is slidably connected with guide rail, connecting groove, air supply unit, spraying unit and discharge unit are sequentially arranged above guide rail along the sliding direction of forming die, and the discharge end of discharge unit is sequentially connected with crushing unit and grading unit.The application can be used for the preparation of concrete aggregate.

Description

Technical Field

[0001] This invention belongs to the field of concrete aggregate production technology, and in particular relates to a device for preparing concrete aggregate using vanadium-titanium smelting slag. Background Technology

[0002] In existing technologies, from the perspective of solid waste utilization, concrete aggregates are usually prepared using vanadium-titanium smelting slag (titanium dioxide content greater than 20%). The specific preparation process is as follows:

[0003] Liquid vanadium-titanium smelting slag is poured hot into a treatment pit through a slag pot. Water is supplied to the treatment pit (i.e., water spraying) to cool it, resulting in slag blocks. After crushing and grading, concrete aggregate (e.g., crushed stone and sand) is obtained.

[0004] However, this method involves the transportation of high-temperature liquid vanadium-titanium smelting slag (around 1400℃), which is quite dangerous. In addition, the processing pit is large in volume, occupies a large area, and requires a large amount of water, resulting in a complex production process for concrete aggregates and higher costs. Summary of the Invention

[0005] Based on the above analysis, the present invention aims to provide a device for preparing concrete aggregate using vanadium-titanium smelting slag, in order to solve the problems of complex production process and high cost of concrete aggregate in the prior art.

[0006] The objective of this invention is mainly achieved through the following technical solutions.

[0007] This invention provides a device for preparing concrete aggregate using vanadium-titanium smelting slag, including a connecting trough, a forming mold, a guide rail, an air supply unit, a spraying unit, a discharge unit, a crushing unit, and a grading unit.

[0008] The forming mold is placed on the guide rail and slidably connected to the guide rail. The connecting groove, air supply unit, spraying unit and discharge unit are arranged in sequence above the guide rail along the sliding direction of the forming mold. The discharge end of the discharge unit is connected to the crushing unit and the grading unit in sequence.

[0009] Furthermore, the equipment features slag dumping mode, air cooling mode, spraying mode, and material discharge mode.

[0010] Furthermore, when the equipment is in slag discharge mode, the slag discharge port of the vanadium-titanium smelting furnace is directly connected to the forming mold through a connecting groove;

[0011] When the equipment is in air-cooled mode, the forming mold is located below the air supply unit, and the air outlet of the air supply unit faces the vanadium-titanium smelting slag inside the forming mold.

[0012] When the equipment is in spray mode, the forming mold is located below the spray unit, and the water outlet of the spray unit faces the vanadium-titanium smelting slag inside the forming mold.

[0013] When the equipment is in discharge mode, the forming mold is located below the discharge unit.

[0014] Furthermore, the air supply unit includes a main air duct and multiple branch air ducts connected to the main air duct.

[0015] Furthermore, the axis of the branch duct is perpendicular to the axis of the main duct;

[0016] Multiple branch ducts are evenly arranged along the axial direction of the main duct.

[0017] Furthermore, the spray unit includes a main water pipe and multiple spray nozzles connected to the main water pipe.

[0018] Furthermore, multiple spray nozzles are evenly arranged along the axial direction of the main water pipe.

[0019] Furthermore, the molding die includes a mold base, a cooling straight pipe, and a cooling baffle. The cooling straight pipe is located in the mold base and its axis is perpendicular to the bottom wall of the mold base. The top of the cooling straight pipe is closed and the bottom is open. The cooling baffle is located in the cooling straight pipe and is arranged along the axis of the cooling straight pipe. There is a gap between the top of the cooling baffle and the top of the cooling straight pipe, dividing the tube heat straight pipe into an inlet rectangular pipe, a top connecting pipe, and an outlet rectangular pipe connected in sequence.

[0020] Furthermore, the equipment also includes a circulating water tank and connecting water pipes. The connecting water pipes include symmetrically arranged water supply rectangular pipes and drainage rectangular pipes, which together form a rectangular connecting water pipe. The inlet end of the water supply rectangular pipe is connected to the outlet of the circulating water tank, and the outlet end of the water supply rectangular pipe is sealed to the inlet rectangular pipe. The inlet end of the drainage rectangular pipe is sealed to the outlet rectangular pipe, and the outlet end of the drainage rectangular pipe is connected to the inlet of the circulating water tank.

[0021] Furthermore, the equipment also includes a water supply magnetic sleeve and a water supply magnetic ring. The bottom of the cooling straight pipe protrudes from the bottom of the mold base. The water supply magnetic ring is located at the bottom of the mold base. The bottom of the cooling straight pipe passes through the bottom of the mold base and the water supply magnetic ring and protrudes from the water supply magnetic ring. The water supply sealing sleeve is fitted onto the outer wall of the connecting water pipe and is slidably connected to the connecting water pipe.

[0022] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0023] A) The equipment for preparing concrete aggregate using vanadium-titanium smelting slag provided by the present invention directly connects the slag discharge port of the vanadium-titanium smelting furnace to the molding mold through a connecting groove, so that the liquid vanadium-titanium smelting slag can be directly poured into the molding mold and then directly carried out in subsequent processing. There is no need to transport the high-temperature liquid vanadium-titanium smelting slag, thereby effectively improving the processing safety of liquid vanadium-titanium smelting slag and simplifying the processing flow.

[0024] B) The equipment for preparing concrete aggregate using vanadium-titanium smelting slag provided by the present invention arranges the connecting trough, air supply unit, spraying unit and discharge unit in sequence above the guide rail along the sliding direction of the forming mold, and performs slag dumping, air cooling, spray cooling and unloading of liquid vanadium-titanium smelting slag in sequence, realizing continuous production of concrete aggregate, eliminating the need for a large treatment pit, effectively reducing water consumption, thereby reducing wastewater generation and effectively reducing the production cost of concrete aggregate.

[0025] C) The equipment for preparing concrete aggregate using vanadium-titanium smelting slag provided by this invention has an air supply unit that promotes crystallization on the surface of medium-titanium vanadium-titanium smelting slag in the molding die, forming a slag shell. This avoids thermal stress causing the slag shell to crack. This slag shell can serve as an isolation layer, preventing subsequent spraying water from directly contacting the liquid vanadium-titanium smelting slag in the molding die and producing water-quenched slag (with lower strength and more pores). This ensures the density and high strength of the obtained aggregate. The spraying unit can achieve effective heat transfer between the spraying water and the liquid vanadium-titanium smelting slag under the slag shell through the slag shell. With the slag shell as the base layer, a crystallization layer is formed layer by layer downwards, ensuring the uniformity of crystallization of the formed solid slag block. This ensures the density and high strength of the obtained particles.

[0026] D) The equipment for preparing concrete aggregate using vanadium-titanium smelting slag provided by the present invention, while performing spray cooling, supplies cooling water into the cooling straight pipe. The cooling water flows through the liquid inlet rectangular pipe, the top connecting pipe and the liquid outlet rectangular pipe. Heat is transferred between the cooling straight pipe wall and the liquid vanadium-titanium smelting slag inside the forming mold of medium-titanium type vanadium-titanium smelting slag. At the same time, the spray water transfers heat through the slag shell and the liquid vanadium-titanium smelting slag inside the forming mold of medium-titanium type vanadium-titanium smelting slag. Thus, heat exchange can be achieved simultaneously from the surface and interior of the liquid vanadium-titanium smelting slag, improving the uniformity and efficiency of cooling.

[0027] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages may become apparent from the description or be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained through the embodiments described and the accompanying drawings, which are particularly pointed out. Attached Figure Description

[0028] The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Throughout the drawings, the same reference numerals denote the same parts.

[0029] Figure 1 This is a schematic diagram of the equipment for preparing concrete aggregate using vanadium-titanium smelting slag provided in Embodiment 1 of the present invention.

[0030] Figure 2 This is a schematic diagram of the equipment for preparing concrete aggregate using vanadium-titanium smelting slag, provided in Embodiment 1 of the present invention, in slag-discharging mode.

[0031] Figure 3 This is a schematic diagram of the equipment for preparing concrete aggregate using vanadium-titanium smelting slag, provided in Embodiment 1 of the present invention, in air-cooled mode.

[0032] Figure 4 This is a schematic diagram of the equipment for preparing concrete aggregate using vanadium-titanium smelting slag, provided in Embodiment 1 of the present invention, in spray mode.

[0033] Figure 5 This is a schematic diagram of the equipment for preparing concrete aggregate using vanadium-titanium smelting slag, provided in Embodiment 1 of the present invention, in the discharge mode.

[0034] Figure label:

[0035] 1-Connecting groove; 2-Guide rail; 3-Main air duct; 4-Branch air duct; 5-Main water pipe; 6-Spray nozzle; 7-Mold base; 8-Cooling straight pipe; 9-Cooling baffle; 10-Circulating water tank; 11-Connecting water pipe; 12-Water supply magnetic suction sleeve; 13-Water supply magnetic suction ring; 14-Discharge push plate; 15-Vertical reciprocating driver; 16-Rotating magnetic suction sleeve; 17-Rotating magnetic suction ring. Detailed Implementation

[0036] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0037] Example 1

[0038] This embodiment provides a device for preparing concrete aggregates using vanadium-titanium smelting slag. See [link to documentation]. Figure 1 It includes a connecting groove 1, a forming mold, a guide rail 2, an air supply unit, a spraying unit, a discharge unit, a crushing unit, and a grading unit. The forming mold is placed on the guide rail 2 and is slidably connected to the guide rail 2. The connecting groove 1, the air supply unit, the spraying unit, and the discharge unit are arranged sequentially above the guide rail 2 along the sliding direction of the forming mold. The discharge end of the discharge unit is sequentially connected to the crushing unit and the grading unit.

[0039] The above-mentioned equipment has slag discharge mode, air cooling mode, spray mode and material discharge mode, as detailed below:

[0040] When the equipment is in slag discharge mode, see Figure 2 The slag discharge port of the vanadium-titanium smelting furnace is directly connected to the forming mold through the connecting groove 1, and the vanadium-titanium smelting furnace slag is introduced into the forming mold through the connecting groove 1.

[0041] When the device is in air-cooled mode, see Figure 3 The forming mold is located below the air supply unit, and the air outlet of the air supply unit faces the vanadium-titanium smelting slag inside the forming mold.

[0042] When the equipment is in spray mode, see Figure 4 The molding die is located below the spray unit, and the outlet of the spray unit faces the vanadium-titanium smelting slag inside the molding die.

[0043] When the equipment is in discharge mode, see Figure 5 The forming mold is located below the discharge unit.

[0044] In practice, the working process of the equipment for preparing concrete aggregate using vanadium-titanium smelting slag is as follows:

[0045] Liquid vanadium-titanium smelting slag discharged from the slag outlet of the vanadium-titanium smelting furnace is guided into the forming mold through the connecting groove 1; the forming mold is driven to slide along the guide rail 2, so that the forming mold is located below the air supply unit, and the forming mold stops sliding; the air supply unit is turned on, and cooling air is sprayed onto the surface of the liquid vanadium-titanium smelting slag in the forming mold, so that a slag shell is formed on the surface of the liquid vanadium-titanium smelting slag in the forming mold, while the interior of the medium-titanium type vanadium-titanium smelting slag in the forming mold remains liquid vanadium-titanium smelting slag; the forming mold slides along the guide rail 2, so that... The forming mold is located below the spraying unit, and the forming mold stops sliding. The spraying unit is turned on, and spray water is sprayed onto the surface of the slag shell. Heat is transferred between the slag shell and the liquid vanadium-titanium smelting slag inside the medium-titanium type vanadium-titanium smelting slag in the forming mold, which cools the liquid vanadium-titanium smelting slag inside the forming mold, causing the liquid vanadium-titanium smelting slag inside the forming mold to completely solidify, resulting in solid slag blocks. The solid slag blocks are then crushed and graded to obtain concrete aggregate.

[0046] It should be noted that the above-mentioned equipment for preparing concrete aggregate using vanadium-titanium smelting slag is particularly suitable for the treatment of medium-titanium vanadium-titanium smelting slag, in which the mass percentage of titanium dioxide is less than 12%, for example, 8% to 12%.

[0047] Compared with the prior art, the equipment for preparing concrete aggregate using vanadium-titanium smelting slag provided in this embodiment, on the one hand, directly connects the slag discharge port of the vanadium-titanium smelting furnace to the molding mold through the connecting groove 1, so that the liquid vanadium-titanium smelting slag can be directly poured into the molding mold and then directly carried out subsequent processing. There is no need to transport the high-temperature liquid vanadium-titanium smelting slag, thereby effectively improving the processing safety of liquid vanadium-titanium smelting slag and simplifying the processing flow.

[0048] On the other hand, the connecting trough 1, the air supply unit, the spraying unit and the discharge unit are sequentially arranged above the guide rail 2 along the sliding direction of the forming mold, so as to sequentially dump the liquid vanadium-titanium smelting slag, air cool, spray cool and discharge it, so as to realize the continuous production of concrete aggregate, without the need for a large treatment pit, and can effectively reduce water consumption, thereby reducing wastewater generation and effectively reducing the production cost of concrete aggregate.

[0049] Specifically, the air supply unit promotes crystallization on the surface of the medium-titanium vanadium-titanium smelting slag in the molding die, forming a slag shell. This prevents thermal stress from causing the slag shell to crack. This slag shell acts as an isolation layer, preventing the subsequent spray water from directly contacting the liquid vanadium-titanium smelting slag in the molding die and producing water-quenched slag (with lower strength and more pores). This ensures the density and high strength of the obtained aggregate. The spray unit enables effective heat transfer between the spray water and the liquid vanadium-titanium smelting slag under the slag shell through the slag shell. With the slag shell as the base layer, a crystallization layer is formed layer by layer downwards, ensuring the uniformity of crystallization of the formed solid slag block. This ensures the density and high strength of the obtained particles.

[0050] Specifically, the structure of the air supply unit includes a main air duct 3 and multiple branch air ducts 4 connected to the main air duct 3. The axial direction of the branch air ducts 4 is perpendicular to the axial direction of the main air duct 3, and the multiple branch air ducts 4 are evenly arranged along the axial direction of the main air duct 3.

[0051] Specifically, the structure of the spray unit includes a main water pipe 5 and multiple spray nozzles 6 connected to the main water pipe 5. The multiple spray nozzles 6 are evenly arranged along the axial direction of the main water pipe 5.

[0052] Considering that spray cooling can only transfer heat from above the molding die, through the slag shell and the liquid vanadium-titanium smelting slag in the molding die, it may result in a slow cooling rate and poor cooling uniformity of the liquid vanadium-titanium smelting slag. Therefore, the structure of the molding die specifically includes a mold base 7, a cooling straight pipe 8, and a cooling baffle 9. The cooling straight pipe 8 is located inside the mold base 7 and its axis is perpendicular to the bottom wall of the mold base 7. For example, the axis of the cooling straight pipe 8 is arranged in the vertical direction. The top of the cooling straight pipe 8 is closed and the bottom is open. The cooling baffle 9 is located in the cooling straight pipe 8 and is arranged along the axis of the cooling straight pipe 8. There is a gap between the top of the cooling baffle 9 and the top of the cooling straight pipe 8, dividing the tube heat straight pipe into an inlet rectangular pipe, a top connecting pipe, and an outlet rectangular pipe connected in sequence.

[0053] In this way, while spray cooling is being carried out, cooling water is supplied to the cooling straight pipe 8. The cooling water flows through the liquid inlet rectangular pipe, the top connecting pipe and the liquid outlet rectangular pipe. Through the pipe wall of the cooling straight pipe 8, heat is transferred to the liquid vanadium-titanium smelting slag inside the medium-titanium type vanadium-titanium smelting slag in the molding mold. At the same time, the spray water transfers heat through the slag shell to the liquid vanadium-titanium smelting slag inside the medium-titanium type vanadium-titanium smelting slag in the molding mold. This enables heat exchange from both the surface and the interior of the liquid vanadium-titanium smelting slag, improving the uniformity and efficiency of cooling.

[0054] Understandably, in order to supply cooling water to the cooling straight pipe 8, the above-mentioned equipment also includes a circulating water tank 10 and a connecting water pipe 11. The connecting water pipe 11 includes a symmetrically arranged water supply rectangular pipe and a drain rectangular pipe, which together form a rectangular connecting water pipe 11. The inlet end of the water supply rectangular pipe is connected to the outlet of the circulating water tank 10, and the outlet end of the water supply rectangular pipe is sealed to the inlet rectangular pipe. The inlet end of the drain rectangular pipe is sealed to the outlet rectangular pipe, and the outlet end of the drain rectangular pipe is connected to the inlet of the circulating water tank 10.

[0055] In this way, through the specific structure of the connecting water pipe 11, a sealed connection between the cooling straight pipe 8 and the connecting water pipe 11 can be achieved, thereby enabling the supply of cooling water.

[0056] To prevent water leakage during water supply, the above-mentioned equipment also includes a water supply magnetic sleeve 12 and a water supply magnetic ring 13. The bottom of the cooling straight pipe 8 protrudes from the bottom of the mold base 7. The water supply magnetic ring 13 is located at the bottom of the mold base 7. The bottom of the cooling straight pipe 8 passes through the bottom of the mold base 7 and the water supply magnetic ring 13 and protrudes from the water supply magnetic ring 13. The water supply sealing sleeve is fitted on the outer wall of the connecting water pipe 11 and is slidably connected to the connecting water pipe 11.

[0057] When the molding die moves to the bottom of the spray unit, and the cooling straight pipe 8 corresponds to the position of the connecting water pipe 11, the water supply magnetic sleeve 12 is energized and magnetically attracted to the water supply magnetic ring 13, causing the water supply magnetic sleeve 12 to move towards the cooling straight pipe 8 and be fitted at the connection between the cooling straight pipe 8 and the connecting water pipe 11, thus achieving a sealed connection between the two and preventing water leakage during the water supply process.

[0058] To facilitate the demolding of solid slag blocks, cooling straight pipe 8 can be used to achieve rapid demolding of solid slag blocks. Specifically, the inner cavity of the forming mold is cubic, the outer wall of the cooling straight pipe 8 is threaded, and the outer wall of the threaded structure is cylindrical. The above-mentioned discharge unit includes a discharge push plate 14 and a discharge reciprocating motor. The output end of the discharge reciprocating motor is connected to the discharge push plate 14.

[0059] When demolding and unloading are required, the cooling straight pipe 8 is rotated. Due to the presence of the threaded structure and the internal limit of the cubic cavity of the forming mold, the solid slag can only move upward, thereby detaching from the cavity of the forming mold and achieving demolding. Then, the unloading reciprocating motor is turned on, and the unloading reciprocating motor drives the discharge push plate 14 to push the solid slag away from the top of the forming mold, so that the solid slag falls into the crushing component for crushing.

[0060] It is understandable that in order to drive the rotation of the cooling straight tube 8, the above-mentioned device also includes a vertical reciprocating driver 15. When the molding die moves to the top of the discharge unit, the output shaft of the vertical reciprocating driver 15 is fixedly connected to the bottom of the cooling straight tube 8. The vertical reciprocating driver 15 is used to drive the cooling straight tube 8 to rotate, thereby realizing the demolding of the solid slag block.

[0061] In order to avoid interference with the output shaft of the vertical reciprocating drive 15 during the movement of the molding die, the above-mentioned device also includes a rotating magnetic sleeve 16 and a rotating magnetic ring 17. It should be noted that the water supply magnetic ring 13 and the rotating magnetic ring 17 can be the same annular structure. The magnetic sleeve is sleeved on the outer wall of the output shaft of the vertical reciprocating drive 15 and is slidably connected to the output shaft. The cross-sectional shape of the inner wall of the magnetic sleeve and the cross-sectional shape of the output shaft of the vertical reciprocating drive 15 are both rectangular.

[0062] Thus, when the molding die moves to the bottom of the discharge unit, and the position of the cooling straight pipe 8 corresponds to the output shaft of the vertical reciprocating driver 15, the rotating magnetic sleeve 16 is energized and magnetically attracted to the rotating magnetic ring 17, causing the rotating magnetic sleeve 16 to move towards the cooling straight pipe 8 and be fitted onto the bottom of the cooling straight pipe 8, thereby achieving a fixed connection between the cooling straight pipe 8 and the output shaft of the vertical reciprocating driver 15.

[0063] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A device for preparing concrete aggregate using vanadium-titanium smelting slag, characterized in that, It includes a connecting groove, a forming mold, a guide rail, an air supply unit, a spraying unit, a discharge unit, a crushing unit, and a grading unit; the forming mold is placed on the guide rail and slidably connected to the guide rail, the connecting groove, the air supply unit, the spraying unit, and the discharge unit are sequentially arranged above the guide rail along the sliding direction of the forming mold, and the discharge end of the discharge unit is sequentially connected to the crushing unit and the grading unit; The molding die includes a die base and a cooling straight pipe. The cooling straight pipe is located inside the die base and its axis is perpendicular to the bottom wall of the die base. The top of the cooling straight pipe is closed, and the bottom is open. The equipment also includes a connecting water pipe, a water supply magnetic sleeve, and a water supply magnetic ring. The connecting water pipe includes a symmetrically arranged water supply rectangular pipe and a drain rectangular pipe. The water supply rectangular pipe and the drain rectangular pipe form a rectangular connecting water pipe. The outlet end of the water supply rectangular pipe is sealed to the inlet rectangular pipe, and the inlet end of the drain rectangular pipe is sealed to the outlet rectangular pipe. The cooling straight pipe... The bottom of the cooling straight pipe protrudes from the bottom of the mold base. The water supply magnetic ring is located at the bottom of the mold base. The bottom of the cooling straight pipe penetrates the bottom of the mold base and the water supply magnetic ring and protrudes from the water supply magnetic ring. The water supply sealing sleeve is fitted onto the outer wall of the connecting water pipe and is slidably connected to the connecting water pipe. When the molding mold moves to the bottom of the spray unit, the position of the cooling straight pipe corresponds to that of the connecting water pipe. Then, the water supply magnetic sleeve is energized and magnetically attracted to the water supply magnetic ring, causing the water supply magnetic sleeve to move towards the cooling straight pipe and fit onto the connection between the cooling straight pipe and the connecting water pipe. The inner cavity of the molding die is cubic in shape, and the outer wall of the cooling straight pipe is threaded. The outer wall of the threaded structure is cylindrical. When demolding and unloading, rotating the cooling straight pipe causes the solid slag to move only upward and detach from the inner cavity of the molding die. The molding die also includes a cooling baffle, which is disposed in the cooling straight pipe and arranged along the axial direction of the cooling straight pipe. There is a gap between the top of the cooling baffle and the top of the cooling straight pipe, dividing the pipe heat straight pipe into an inlet rectangular pipe, a top connecting pipe and an outlet rectangular pipe connected in sequence. The device also includes a circulating water tank, with the inlet end of the water supply rectangular pipe connected to the outlet of the circulating water tank, and the outlet end of the drainage rectangular pipe connected to the inlet of the circulating water tank.

2. The equipment for preparing concrete aggregate using vanadium-titanium smelting slag according to claim 1, characterized in that, The equipment has slag dumping mode, air cooling mode, spraying mode and material discharge mode.

3. The equipment for preparing concrete aggregate using vanadium-titanium smelting slag according to claim 2, characterized in that, When the equipment is in slag discharge mode, the slag discharge port of the vanadium-titanium smelting furnace is directly connected to the forming mold through a connecting groove; When the equipment is in air-cooled mode, the molding die is located below the air supply unit, and the air outlet of the air supply unit faces the vanadium-titanium smelting slag inside the molding die. When the equipment is in spray mode, the molding die is located below the spray unit, and the water outlet of the spray unit faces the vanadium-titanium smelting slag inside the molding die. When the equipment is in discharge mode, the molding die is located below the discharge unit.

4. The equipment for preparing concrete aggregate using vanadium-titanium smelting slag according to claim 1, characterized in that, The air supply unit includes a main air duct and multiple branch air ducts connected to the main air duct.

5. The equipment for preparing concrete aggregate using vanadium-titanium smelting slag according to claim 4, characterized in that, The axis of the branch duct is perpendicular to the axis of the main duct. Multiple branch ducts are evenly arranged along the axial direction of the main duct.

6. The equipment for preparing concrete aggregate using vanadium-titanium smelting slag according to claim 1, characterized in that, The spray unit includes a main water pipe and multiple spray nozzles connected to the main water pipe.

7. The equipment for preparing concrete aggregate using vanadium-titanium smelting slag according to claim 6, characterized in that, Multiple spray nozzles are evenly arranged along the axial direction of the main water pipe.

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