Copper-containing solid waste ball pressing forming system

Abstract

The invention provides a copper-containing solid waste ball pressing forming system which comprises a material mixing belt, a stirring machine, a feeding belt, a ball pressing machine and a rotatable sieve plate which are sequentially connected, the ball pressing machine is provided with a feeding hopper allowing materials to enter and a discharging opening allowing balls to be guided out, and the rotatable sieve plate is rotatably arranged and is provided with a material outlet. When the rotatable sieve plate inclines, the higher end of the rotatable sieve plate is connected with the discharge port, and when the rotatable sieve plate is vertical, the rotatable sieve plate is separated from the discharge port; the device further comprises a ball outlet belt and a material returning belt. The rotatable screen plate comprises a pair of mounting plates, the two mounting plates are oppositely arranged, a rotating shaft is fixedly mounted between the two mounting plates, a transverse plate is further fixedly connected between the two mounting plates, a plurality of chutes parallel to the mounting plates are formed in the transverse plate, a long-strip-shaped screen frame is arranged in each chute in the length direction of the chute, and a cover plate is further fixedly connected between the two mounting plates. On the premise that raw materials are not wasted, the problem that in the prior art, due to the fact that part of balls are insufficient in strength in ball pressing machining, the balls are prone to being damaged in the transferring process is solved.

Description

Technical Field

[0001] The invention relates to the technical field of harmless treatment equipment for copper-containing solid waste, and in particular to a copper-containing solid waste pelletizing system. Background Art

[0002] In the process of treating copper-containing solid waste, a briquetting machine can generally be used to mix the copper-containing solid waste with other auxiliary materials (such as coal slag, clay, etc.) and press them into spheres, and then further smelt them to recover the valuable metal copper contained therein (other valuable metals such as iron may also be recovered at the same time). A brick-making machine can also be used to press the copper-containing solid waste and other auxiliary materials into bricks, but the spherical products are smaller in volume and larger in surface area than brick products, which helps to increase the smelting reaction rate. In the prior art, the briquetting machine includes mechanical or hydraulic forming. During operation, the material is evenly fed into the forming area through a feeding system, and then pressure is applied to the material through a hydraulic or mechanical pressure device to form it into a sphere in the mold. The formed sphere is separated from the mold by a demolding mechanism, and then transferred to the next step for drying to ensure its shape and strength. Under the same conditions, the denser the sphere and the more uniform the composition, the higher the quality of the formed sphere. For example, a Chinese invention application with publication number CN115320163A provides a ball press machine, including a main device, wherein a ball press box is arranged inside the main device, a material distribution box is fixedly connected to the bottom surface of the ball press box, a feed hopper is fixedly connected to the upper surface of the ball press box, an adjusting rotating plate is movably connected to the bottom end of the feed hopper, and a collecting hopper is fixedly connected to the bottom surface of the inner wall of the material distribution box. The invention collects the slag falling on the waste conveyor belt into the collecting hopper under the conveyance of the waste conveyor belt, and starts the driving motor at the top of the auger conveying assembly to drive the auger blades in the auger conveying assembly to rotate, and the slag stored in the collecting hopper is conveyed to the top of the auger conveying assembly, and then it is collected again into the ball press box under the guidance of the auger conveying pipe, and mixed with other raw materials to extrude coke balls, thereby achieving the effects of automatic cleaning, automatic collection and automatic feeding of waste slag. However, the pressure in the actual ball pressing process is lower than that in the brick making process. In the actual processing process, some raw materials may not be filled enough into the balls, resulting in insufficient pressing strength of the balls. Ultimately, some balls are easily damaged by impact during transportation. The damaged balls are easily exploded when entering the furnace for smelting and are carried away by the flue gas, resulting in a waste of resources. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a copper-containing solid waste pelletizing system, which solves the problem in the prior art that some pellets are insufficiently strong, resulting in the pellets being easily damaged during transportation.

[0004] According to an embodiment of the present invention, a copper-containing solid waste ball forming system comprises a mixing belt, a mixer, a feeding belt, a ball press, and a rotatable screen plate connected in sequence, wherein the ball press is provided with a feeding hopper for material entry and a discharging port for ball outlet, the rotatable screen plate is rotatably arranged, when the rotatable screen plate is tilted, its higher end is connected to the discharging port, and when the rotatable screen plate is vertical, it is separated from the discharging port; it also comprises a ball discharging belt for receiving balls from the rotatable screen plate; it also comprises a return belt for receiving balls vertically from the rotatable belt; The spherical body comes from the discharge port when it is straight, and the end of the return belt away from the discharge port also has a vertical projection on the feed belt; the rotatable screen plate includes a pair of mounting plates, the two mounting plates are opposite to each other and a rotating shaft is fixedly installed between each other, a cross plate is also fixedly connected between the two mounting plates, a plurality of chutes parallel to the mounting plates are arranged on the cross plate, a long strip screen frame is arranged in each chute along its length direction, a cover plate is also fixedly connected between the two mounting plates, the cover plate is arranged parallel to the cross plate and a soft curtain is also installed on the cover plate and located between the cover plate and the cross plate.

[0005] In the above embodiment, when the molding quality of the balls discharged from the ball press outlet meets the requirements, the screen plate can be rotated and tilted, and the balls directly enter between the cross plate and the cover plate, and then the screened materials fall onto the ball outlet belt through the chute after screening, and then are sent to the drying process through the ball outlet belt. Some unqualified balls before meeting the requirements fall directly onto the return belt and return to the ball press for re-pressing. When the subsequent molding quality is reduced, the screen plate can be rotated to vertical, and the operation is repeated to ensure that the final dried balls always have qualified molding quality. At the same time, unqualified balls can also be smoothly returned for re-pressing without wasting raw materials. This solves the problem in the prior art that some balls are not strong enough in the ball pressing process, which makes the balls easily damaged during transportation.

[0006] Furthermore, it also includes a raw material bin and an auxiliary material bin, and the raw material bin and the auxiliary material bin are respectively connected to the mixing belt.

[0007] Furthermore, a mounting frame is provided on the cover plate, and the soft curtain includes a mounting portion clamped with the mounting frame and a soft curtain portion connected with the mounting portion, and an accommodating piece which can be partially accommodated in each chute is also provided at one end of the soft curtain portion away from the mounting portion.

[0008] Furthermore, the mounting portion includes a horizontal connecting plate and a vertical connecting plate which is combined with the horizontal connecting plate to form a T-shape. The vertical connecting plate passes through the mounting frame and is connected to the soft curtain portion by bolts.

[0009] Furthermore, a reinforcement sleeve which is clamped with the installation frame is wrapped around the outside of the vertical connection plate.

[0010] Further, the reinforcement sleeve portion extends between the transverse plate and the cover plate.

[0011] Furthermore, the width of one end of the reinforcing sleeve away from the transverse plate is greater than that of the other end and the reinforcing sleeve also abuts against the transverse connecting plate.

[0012] Furthermore, the vertical connecting plate and the cover plate form an angle of 45°-60°.

[0013] Further, the soft curtains include 1-3 curtains arranged from high to low.

[0014] Furthermore, the width of the screen frame is 0.6-0.9 times the length of the minor axis of the sphere.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The setting of the rotatable screen plate can make all the balls with unqualified molding quality return to be pressed again, thereby effectively ensuring the molding quality of the molded balls, not wasting raw materials, and solving the problem that some balls are not strong enough in the existing ball pressing process, which makes the balls easily damaged during transportation;

[0017] At the same time, the chute on the rotatable screen plate and the long screen frame in the chute play a role in size screening, ensuring that unqualified balls with small sizes cannot reach the ball outlet belt, thereby ensuring the uniformity of the size of the final balls. In this way, the drying process and the transportation process can be kept uniform, reducing the breakage rate of the balls, and thus reducing the chance of damaged balls entering the furnace for smelting and being easily exploded and carried away by the flue gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention;

[0019] Figure 2 A schematic diagram of the local structure of an embodiment of the present invention Figure 1 ;

[0020] Figure 3 A schematic diagram of the local structure of an embodiment of the present invention Figure 2 ;

[0021] Figure 4 It is a schematic diagram of a top view of the structure of a horizontal plate according to an embodiment of the present invention;

[0022] Figure 5 It is a schematic diagram of the partial structure of the chute and the soft curtain according to an embodiment of the present invention;

[0023] Figure 6 It is an enlarged schematic diagram of the structure of the cover plate and the soft curtain according to an embodiment of the present invention;

[0024] Figure 7 for Figure 6 A is an enlarged schematic diagram of the local structure at center A;

[0025] In the above drawings:

[0026] Raw material bin 1, auxiliary material bin 2, conveyor belt 3, mixing belt 4, mixer 5, feed belt 6, ball press 7, feed hopper 8, sphere 9, discharge belt 10, rotating screen plate 11, ball discharge belt 12, return belt 13, mounting plate 14, rotating shaft 15, horizontal plate 16, chute 17, screen frame 18, cover plate 19, soft curtain 20, mounting part 21, soft curtain part 22, accommodating piece 23, horizontal connecting plate 24, vertical connecting plate 25, bolt 26, reinforcement sleeve 27. DETAILED DESCRIPTION

[0027] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0029] In an exemplary embodiment, Figure 1-5As shown, the present embodiment provides a copper-containing solid waste ball forming system, which includes a raw material bin 1 and an auxiliary material bin 2, the raw material bin 1 and the auxiliary material bin 2 are respectively connected to a mixing belt 4 through a conveyor belt 3, a mixer 5 is arranged below the end of the mixing belt 4, the raw material and the auxiliary material are sent to the mixer 5 through the mixing belt 4 for mixing, and then discharged to a feeding belt 6, a ball press 7 is arranged below the end of the feeding belt 6, and the ball press 7 is provided with a feeding hopper 8 for material to enter and a discharge port for ball 9 to be discharged, the mixed material enters the feeding hopper 8 through the feeding belt 6, and then After that, the balls enter the ball press machine 7 for pressing and forming, and then fall onto the discharge belt 10 below, and then pass through the discharge belt 10 to be led out to the discharge port. A rotatable screen plate 11 is also provided below the discharge port (i.e. below the discharge end of the discharge belt 10). The rotatable screen plate 11 is rotatably provided. When the rotatable screen plate 11 is tilted, its higher end is connected with the discharge port, and the balls 9 led out of the discharge port enter the rotatable screen plate 11. When the rotatable screen plate 11 is vertical, it is separated from the discharge port, and the balls 9 led out of the discharge port do not enter the rotatable screen plate 11. A rotatable screen plate 11 is also provided below the discharge port. There is a ball discharging belt 12 for receiving the balls 9 after being screened by the rotatable screen plate 11; a return belt 13 is also provided below the rotatable screen plate 11 for receiving the balls 9 from the discharging port when the rotatable belt is vertical, and the end of the return belt 13 away from the discharging port also has a vertical projection on the feeding belt 6, so that the balls 9 that have not entered the rotatable screen plate 11 are returned to the feeding belt 6, and at the same time, the unqualified balls 9 after being screened by the rotatable screen plate 11 can also fall on the return belt 13; the rotatable screen plate 11 includes a pair of mounting plates 14, the two mounting plates 14 are provided with a plurality of mounting plates 14, and the two mounting plates 14 are provided with a plurality of mounting plates 14. The mounting plates 14 are opposed to each other and a rotating shaft 15 is fixedly installed between each other (a driving motor is arranged outside the two mounting plates 14 to drive the rotating shaft 15 to realize rotation), a transverse plate 16 is also fixedly connected between the two mounting plates 14, and a plurality of chutes 17 parallel to the mounting plates 14 are arranged on the transverse plate 16, and a long strip screen frame 18 is arranged in each chute 17 along its length direction, and a cover plate 19 is also fixedly connected between the two mounting plates 14, the cover plate 19 is arranged parallel to the transverse plate 16, and a soft curtain 20 located between the cover plate 19 and the transverse plate 16 is also installed on the cover plate 19.

[0030] In the above embodiment, when the molding quality of the balls 9 discharged from the discharge port of the ball press machine 7 meets the requirements, the screen plate 11 can be rotated to be tilted, and the balls 9 directly enter between the cross plate 16 and the cover plate 19, and then the screened materials fall onto the ball outlet belt 12 through the chute 17 after screening, and then are sent to the drying process through the ball outlet belt 12. Some unqualified balls 9 before meeting the requirements fall directly onto the return belt 13, and return to the ball press machine 7 for re-pressing. When the subsequent molding quality is reduced, the screen plate 11 can be rotated to vertical, and the operation is repeated to ensure that the final dried balls 9 always have qualified molding quality. At the same time, unqualified balls 9 can also be smoothly returned for re-pressing without wasting raw materials, which solves the problem that some balls exist in the ball pressing process in the prior art. 9 The problem that the balls 9 are easily damaged during transportation due to insufficient strength; in a more specific solution, the set horizontal plate 16, the two mounting plates 14 and the cover plate 19 are enclosed into a box structure with two ends open, that is, a channel for screening the balls 9. When the rotatable screen plate 11 is tilted, a plurality of chutes 17 arranged in the channel are provided for a single ball 9 to enter and roll obliquely downward. During the rolling process, the balls smaller than the screen frame 18 pass through the screen frame 18 and fall onto the return belt 13 below, return to the feed belt 6, and then re-enter the ball press 7 for pressing. The balls 9 of qualified size pass through the channel smoothly and fall onto the ball outlet belt 12, thereby achieving screening; more specifically, the discharge port can be monitored online (such as the online monitoring video in the prior art) The method combined with the online density detection device (such as the online X-ray density detection device in the prior art) is used to judge whether the molding quality of the ball 9 is qualified (online monitoring can observe the crushing of the ball 9. When the crushing rate is large, the rotatable screen plate 11 is not rotated to tilt. The online density detection device detects the density of the ball 9. If the density does not meet the standard, the rotatable screen plate 11 is not rotated to tilt). In further detail, when the cross plate 16 is tilted, the channel is also tilted, and the soft curtain 20 arranged in the channel forms a certain blocking effect on the ball 9 in the chute 17, thereby preventing the ball 9 from rolling down too quickly. In particular, the soft curtain 20 set can be 1-3, which can be equidistantly arranged from top to bottom, and different numbers and The soft curtains 20 at different positions can adjust the overall speed of the sphere 9 rolling in the channel, so that the screening effect can reach the optimal level; further, the cross-section of the chute 17 is a semicircular arc structure, and a screen frame 18 is arranged at the bottom of the semicircular arc structure. The width of the screen frame 18 can be 0.6-0.9 times the length of the minor axis of the sphere 9 (the sphere 9 after pressing is elliptical). In this way, the final sphere 9 has a better uniformity and maintains a good degree of integrity during the subsequent drying process and transportation process. The best effect is achieved when the width is 0.8 times the length of the minor axis (such as the pressed sphere 9 has a major axis length of 60 mm, a minor axis length of 35 mm, and a width of the screen frame 18 of 28 mm is the best effect).

[0031] In a further exemplary embodiment, Figure 5-7As shown, a mounting frame is provided on the cover plate 19, and the soft curtain 20 includes a mounting portion 21 clamped with the mounting frame and a soft curtain portion 22 connected to the mounting portion 21, and the end of the soft curtain portion 22 away from the mounting portion 21 is also provided with an accommodating sheet 23 that can be partially accommodated in each chute 17, and the soft curtain portion 22 and the accommodating sheet 23 can be an integrated flexible sheet, such as a flexible rubber skin, and the accommodating sheet 23 is partially pressed into the chute 17, so that it can be more closely contacted with the ball 9 in the chute 17, thereby pressing on the ball 9, providing a rolling-down blocking effect for the ball 9, but not completely The spheres 9 are not blocked, but the speed of the spheres 9 is reduced, the residence time of the spheres 9 in the channel is increased, and at the same time, when some spheres 9 slightly smaller than the screen frame 18 pass through the accommodating sheet 23, they are pressed down by the accommodating sheet 23 and can pass through the screen frame 18, thereby ensuring that the size of the spheres 9 after screening is more uniform; in more detail, the mounting portion 21 includes a horizontal connecting plate 24 and a vertical connecting plate 25 formed in a T shape with the horizontal connecting plate 24, the vertical connecting plate 25 passes through the mounting frame and is connected to the soft curtain portion 22 by bolts 26, so that one end of the soft curtain 20 is provided with a rigid support , the other end provides elastic downward pressure, which cooperates to slow down and press down the ball 9 in the channel, and the T-shaped structural setting can make the connection strength between the soft curtain 20 and the cover plate 19 better to prevent loosening during operation. More specifically, the vertical connecting plate 25 is also wrapped with a reinforcing sleeve 27 that is clamped with the installation frame. The reinforcing sleeve 27 partially extends between the transverse plate 16 and the cover plate 19. The width of one end of the reinforcing sleeve 27 away from the transverse plate 16 is greater than that of the other end and is also against the transverse connecting plate 24. The reinforcing sleeve 27 is large at one end and small at the other end, which is compatible with the installation frame. The frame connection can be tighter, and when the ball 9 rolls downward, a downward dragging effect will be applied to the soft curtain 20. The horizontal connecting plate 24 also presses downward against the reinforcing sleeve 27, indirectly providing a downward pressing and pulling effect on the reinforcing sleeve 27, so that the reinforcing sleeve 27 is more tightly clamped on the installation frame, and finally the installation of the soft curtain 20 is more stable; in particular, the vertical connecting plate 25 and the cover plate 19 form an angle of 45°-60°. This arrangement enables the soft curtain 20 to play an optimal downward pressing and deceleration effect, and at this time the inclination of the horizontal plate 16 is also between 45°-60°.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A copper-containing solid waste pelletizing system, characterized in that: The invention comprises a mixing belt, a mixer, a feeding belt, a ball press, and a rotatable screen plate connected in sequence, wherein the ball press is provided with a feeding hopper for materials to enter and a discharging port for balls to be discharged, the rotatable screen plate is rotatably arranged, and when the rotatable screen plate is tilted, its higher end is connected to the discharging port, and when the rotatable screen plate is vertical, it is separated from the discharging port; it also comprises a ball discharging belt for receiving balls from the rotatable screen plate; it also comprises a return belt for receiving balls from the discharging port when the rotatable belt is vertical, and the return belt The end facing away from the discharge port also has a vertical projection on the feed belt; the rotatable screen plate includes a pair of mounting plates, the two mounting plates are opposite to each other and a rotating shaft is fixedly installed between each other, a cross plate is fixedly connected between the two mounting plates, a plurality of chutes parallel to the mounting plates are arranged on the cross plate, each chute is provided with a long strip screen frame along its length direction, a cover plate is fixedly connected between the two mounting plates, the cover plate is arranged parallel to the cross plate and a soft curtain is installed on the cover plate between the cover plate and the cross plate.

2. The copper-containing solid waste pelletizing system according to claim 1, characterized in that: It also includes a raw material bin and an auxiliary material bin, and the raw material bin and the auxiliary material bin are respectively connected to the mixing belt.

3. The copper-containing solid waste pelletizing system according to claim 1, characterized in that: The cover plate is provided with a mounting frame, the soft curtain comprises a mounting portion clamped with the mounting frame and a soft curtain portion connected with the mounting portion, and an accommodating piece which can be partially accommodated in each of the chutes is further provided at one end of the soft curtain portion away from the mounting portion.

4. The copper-containing solid waste pelletizing system according to claim 3, characterized in that: The mounting portion includes a horizontal connecting plate and a vertical connecting plate which is combined with the horizontal connecting plate to form a T-shape. The vertical connecting plate passes through the mounting frame and is connected to the soft curtain portion by bolts.

5. The copper-containing solid waste pelletizing system according to claim 4, characterized in that: The vertical connection plate is also wrapped with a reinforcement sleeve that is clamped with the installation frame.

6. The copper-containing solid waste pelletizing system according to claim 5, characterized in that: The reinforcement sleeve portion extends between the transverse plate and the cover plate.

7. The copper-containing solid waste pelletizing system according to claim 6, characterized in that: The width of one end of the reinforcing sleeve away from the transverse plate is greater than that of the other end and the reinforcing sleeve also abuts against the transverse connecting plate.

8. The copper-containing solid waste pelletizing system according to any one of claims 4 to 7, characterized in that: The vertical connecting plate and the cover plate form an angle of 45°-60°.

9. The copper-containing solid waste pelletizing system according to claim 1, characterized in that: The soft curtains include 1 to 3 curtains arranged from high to low.

10. The copper-containing solid waste pelletizing system according to claim 1, characterized in that: The width of the screen frame is 0.6-0.9 times the length of the minor axis of the sphere.

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