Zinc ingot casting excess material recovery system and method and application of zinc ingot casting excess material recovery system and method in non-magnetic metal sand mold casting

Abstract

The invention relates to a zinc ingot pouring excess material recycling system and method and application in non-magnetic metal sand mold pouring, the recycling system comprises a mixed material washing device, a gulch-gold separation device and a water-sand separation device, a discharge port of a mixed material roller of the mixed material washing device is connected and communicated with one end of a protective cover of the gulch-gold separation device through a flange, and the other end of the protective cover of the water-sand separation device is connected and communicated with the water-sand separation device; the separator is wrapped by a groove-shaped protective plate of the gulch-gold separation device, a material guide plate is arranged at the bottom of one end of the separator, and a material conveying pipe extends to the position above one end of a filter plate of the water-sand separation device; the recycling method comprises the steps of S1, material and equipment preparation, S2, material mixing, S3, material stirring and gulch-gold separation, and S4, sand-water separation. The zinc ingot casting excess material recovery system and the recovery method are used for recovering excess material metal and molding sand in non-magnetic metal sand mold casting in the non-magnetic metal sand mold casting. And excess materials generated in the sand casting process of zinc ingots can be conveniently recycled.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of material classification recycling, in particular to a zinc ingot pouring residual material recycling system and method. BACKGROUND

[0002] In the smelting process of zinc ingot, the last zinc ingot forming is usually completed by pouring. As a traditional pouring process, sand mold pouring has the advantages of wide material source, low cost, wide use, short molding cycle, high production efficiency, high casting quality, and fast heat dissipation. When zinc ingot is poured by sand mold, some molten slag or residual material is mixed in the sand. On the one hand, it is not convenient to model the sand again, and on the other hand, it is easy to cause loss of zinc ingot material. Therefore, the mixed material in the sand needs to be separated and then reused. In the prior art, an application with the application publication number CN 111957886 A and the application name A comprehensive recycling process based on foundry waste sand is disclosed. The application discloses that the metal residues in the sand are usually separated by magnetic attraction. An application with the application publication number CN 112475224 A and the application name A high-efficiency separation and recovery device for foundry sand discloses that the sand is crushed by a crushing device, then washed by spraying, and finally dried and adjusted by a drying and adjusting device before being reused.

[0003] However, when zinc ingot and aluminum ingot are poured by sand mold casting, the metal residues are aluminum and zinc, which cannot be attracted by magnetism. Moreover, when the sand is crushed by a crushing device, if the metal remains in the sand, on the one hand, the crushing device will be damaged, and on the other hand, the metal will be ground into the sand, which is not convenient for separation. Therefore, the existing sand separation and recovery device is not suitable for the sand used for pouring aluminum ingot. SUMMARY

[0004] To solve or partially solve the problems in the related art, the present application provides a zinc ingot pouring residual material recycling system and method, and application in non-magnetic metal sand mold pouring, which can conveniently recycle the residual material generated in the sand mold casting process of zinc ingot.

[0005] The present application discloses a zinc ingot pouring residual material recycling system, which comprises: A mixing and water washing device is used for water washing of sand and gold mixed material, which comprises a water pipe, a water pump, a support, a mixing drum, and a hopper. The mixing drum driven by a motor is rotatably connected to the support. One end of the mixing drum is provided with an inlet and connected to a hopper. The other end of the mixing drum is provided with an outlet. The water outlet of the water pipe is opposite to the hopper. The water pipe is connected to the water pump and communicated to a water source. Sand gold separation device, sand gold separation device includes: The material guide device includes a groove-shaped guard plate, a material falling port, a material blocking plate, a material guide plate, and a material conveying pipe. The separator includes a cover, a connecting shaft, a spiral plate, and a first filter screen. The water-sand separation device includes a filter plate, and the filter plate is provided with a plurality of water leakage holes at one end. The discharge port of the mixing drum is connected to one end of the cover through a flange and is communicated, the groove-shaped guard plate is wrapped around the separator, and the material guide plate is arranged at the bottom of one end of the separator.

[0006] Optionally, the first separation device is used for initially separating the sand and metal materials, a mesh screen is used as the first separation device to preliminarily separate the sand and metal, and the separated sand and metal mixture is conveyed to the hopper.

[0007] Optionally, the mixing drum is arranged in a forward mixing manner and is arranged in a reverse unloading manner, the first filter screen has a pore size that allows only the largest sand particles to pass through, the second filter screen has a pore size that allows only the smallest sand particles to pass through, and a gap is arranged between the second filter screen and the filter plate.

[0008] Optionally, the bottom of the groove-shaped guard plate is arranged in an arc shape that is matched with the separator, an arc-shaped blocking plate is arranged at one end of the cover and is located below the cover, so that the groove-shaped guard plate and the bottom of the separator have a gap, the filter plate and the second filter screen are arranged in an arc shape, and the material guide plate is arranged in an arc shape.

[0009] Optionally, the groove-shaped guard plate includes a bottom arc-shaped plate, a middle vertical plate, and a top inclined plate, and the center of the end of the separator that is away from the material guide plate is located in the middle lower part of the middle vertical plate.

[0010] Optionally, the material guide plate includes an arc-shaped bottom plate and a wing plate, the arc-shaped bottom plate and the wing plate are integrally formed, and the wing plate is fastened and connected to the groove-shaped guard plate through screws.

[0011] Optionally, the first filter screen has a pore size that allows only the largest sand particles to pass through.

[0012] Optionally, the central axis of the separator is arranged at an angle of 15 degrees with the central axis of the bottom arc-shaped plate, the bottom arc-shaped plate near the end of the shroud of the slot-shaped guard plate is a half semicircle, the bottom arc-shaped plate at the other end is a three-fifths circle, the middle vertical plate is triangular, and the top inclined plate is trapezoidal.

[0013] Optionally, the bottom arc-shaped plate of the slot-shaped guard plate near the end of the shroud is constructed with an arc-shaped baffle and located below the shroud, so that the slot-shaped guard plate has a gap with the bottom of the separator.

[0014] Optionally, the connecting shaft is in the shape of a circular tube, the spiral plate is in the shape of a strip with a width consistent with the diameter of the connecting shaft and is spirally fixed to the inside of the connecting shaft, and the spiral plate forms a gap consistent with the diameter of the connecting shaft with the first filter screen on both sides of the connecting shaft.

[0015] Optionally, the mixing drum adopts forward rotation mixing and reverse rotation unloading.

[0016] A zinc ingot pouring residue recycling method, which separates and recycles the sand and metal residues by using the zinc ingot pouring residue recycling system according to any one of the above.

[0017] Optionally, the method comprises the following steps: S1: material and equipment preparation: preparing the material to be separated and recycled, starting the mixing drum, and preparing the water source for flushing; S2: mixing: pouring the sand and metal mixture after the zinc ingot pouring demolding into the hopper, and starting the water pump to flush the mixture while pouring the mixture; S3: mixing and sand-metal separation: after the mixture is mixed in the mixing drum for a period of time, the mixture is transported into the separator for sand, water and metal separation, during the separation, the mixture of water and sand is filtered through the first filter screen and falls into the material guide, which is blocked by the blocking plate and transported to the next stage through the material conveying pipe to obtain the sand-water mixture, the metal residue remains in the first filter screen and falls into the guide plate, which slides into the collection box to obtain the filtered metal; S4: sand-water separation: the sand-water mixture is transported to the filter plate through the material conveying pipe, the water falls into the water tank below the filter plate through the water leakage hole to collect the washing water, and the sand remains on the second filter screen and is collected in the container by manual or setting to obtain the washed sand for use.

[0018] Optionally, the washing water collected in step S4 is transported to a water tank after sedimentation to obtain clean water as flushing water for the next step S2 mixing, and the sediment is dried by natural drying, drying or frying and then mixed with new sand to be used again.

[0019] Optionally, the washed sand collected in step S4 is dried by natural air drying or drying or frying and then used, and whether there is metal in the washed sand is observed or detected by a metal detector, if there is no metal, the washed sand is mixed with new sand and then used again, if there is metal, the metal is screened out and then mixed with new sand and used again.

[0020] Optionally, the use ratio of the new sand, the dried washed sand and the fine sand is 5:3.5:1.5.

[0021] A zinc ingot pouring residue recycling system and a recycling method are applied to non-magnetic metal sand mold pouring, and the zinc ingot pouring residue recycling system and the zinc ingot pouring residue recycling method are used to recycle the metal residue and the sand after the non-magnetic metal is poured in the sand mold.

[0022] The technical scheme provided in the application can include one of the following beneficial effects: The system mixes and washes the materials by the mixing roller to facilitate the cooling and separation of the sand and the metal, then the metal residue and the water-sand mixed material are separated by the separator in the sand-metal separation device and collected, and the water-sand mixed material is transported to the water-sand separation device by the material guide to separate the water and the sand and then reused; Through the design of the system and the use of the method, the sand and the metal are washed once when the non-magnetic metal such as the zinc ingot and the aluminum ingot is poured in the sand mold, the metal residue is recycled, the sand and the metal are separated, other impurities are not introduced, the materials are not lost, the equipment is not damaged, and the separation and recycling of the materials are facilitated; The system and the method can also be applied to the recycling of the residue after the non-magnetic metal is poured in the sand mold.

[0023] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the application. BRIEF DESCRIPTION OF DRAWINGS

[0024] The above and other objects, features and advantages of the present application will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings in which like reference characters refer to like parts throughout the several views, and in which the exemplary embodiments of the present application are shown.

[0025] Figure 1 is a structural schematic diagram of an embodiment of the application; Figure 2 is a front view of a sand-metal separation device according to an embodiment of the application; Figure 3 is a side view of a groove-shaped guard plate according to an embodiment of the application; Figure 4 is a process flow diagram according to an embodiment of the application; Reference signs: 1, base; 2, support; 3, mixing roller; 4, hopper; 5, material guide; 6, separator; 7, filter plate; 51, groove-shaped guard plate, 52, material falling port; 53, material blocking plate; 54, material guide plate; 55, material conveying pipe; 61, shroud; 62, connecting shaft; 63, spiral plate; 64, first filter screen; 71, water leakage hole; 72, second filter screen; 511, bottom arc-shaped plate; 512, middle vertical plate; 513, top inclined plate; 541, wing plate; 542, arc-shaped bottom plate. DETAILED DESCRIPTION

[0026] Embodiments of the present application will be described in more detail with reference to the drawings. Although the embodiments of the present application are shown in the drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that the present application will be thorough and complete, and will fully convey the scope of the present application to those skilled in the art.

[0027] It should be understood that although the terms "first", "second", "third", etc. can be used in this application to describe various information, these information should not be limited by these terms. These terms are only used to distinguish the same type of information from each other. For example, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information without departing from the scope of the present application. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified.

[0028] In the description of the present application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0029] Unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0030] In view of the above problems, the embodiment of the present application provides a zinc ingot pouring residual material recycling system and method and application in non-magnetic metal sand mold pouring. The technical scheme of the embodiment of the present application is described in detail below with reference to the drawings.

[0031] As shown in Figure 1 , Figure 2 and Figure 3 , a zinc ingot pouring residual material recycling system comprises: A mixing and water washing device is used to fully mix and wash the sand mold after the zinc ingot is demolded and some metal residual materials contained in the sand mold, so as to facilitate cooling of the metal residual materials while the sand mold is scattered, and facilitate separation of the sand mold and the metal residual materials. Specifically, the structure comprises a water pipe, a water pump, a support 2, a mixing drum 3, and a hopper 4. The present application first pours a platform 1 on the ground, then places and fixedly sets the support 2 on the platform 1, the support 2 is a support carried by the mixing drum 3 itself, then sets the mixing drum 3 driven to rotate by a motor on the support 2, the mixing drum 3 is provided with an inlet end and an outlet end at both ends thereof through flange connection, the connecting equipment for driving the mixing drum 3 to rotate is also provided at the inlet end and the outlet end, the driving motor is provided at the inlet end, the inlet end is provided with an inlet, a hopper 4 is connected and set at the inlet, the outlet end of the mixing drum 3 is provided with an outlet, the water pipe outlet is arranged opposite to the hopper 4, and the water pipe is connected to the water pump and communicated to a water source, so that the mixed material of the sand mold and the metal can be poured into the mixing drum 3 together with water. The material and water are poured into the mixing drum 3 together, the mixing is realized through rolling of the mixing drum 3, the water washing and cooling and separation of the metal and the sand mold are realized at the same time, and the clumped sand mold is broken through tumbling of the metal, washing of the water flow, and collision of the inner wall of the drum. Accordingly, some protrusions or blocks are preferably arranged in the mixing drum 3 to facilitate impact.

[0032] After the shaft mixes and cools the molding sand and metal, they need to be separated. Therefore, this application uses a gold sand separation device, which includes a separator 6 and a feeder 5. The separator 6 includes a protective cover 61, a connecting shaft 62, a spiral plate 63, and a first filter screen 64. The separator 6 is equipped with a cylindrical cover, one end of which is connected to a flange. The flange is fastened to the discharge port of the mixing drum 3. Multiple connecting shafts 62 are fixedly connected to the inner wall of the cover. The outer side of the multiple connecting shafts 62 surrounds the first filter screen 64, and the inner side is connected to the spiral plate 63. This creates a filter screen that can rotate with the mixing drum 3. At the same time, the filter screen, through the spiral plate 63 inside, forms a spiral conveyor channel to facilitate the conveying of metal blocks to the other end. The molding sand and water leak out through the first filter screen 64, leaving only the metal, thus effectively separating the metal from the molding sand and water. During this process, the separated metal slides and falls on the first filter screen 64 during transportation, thus impacting the first filter screen 64 and preventing a large amount of molding sand from becoming entangled on it. The filtered molding sand and water need to be collected, and this application provides a feeder 5 to discharge and transport the filtered molding sand and water. Specifically, the feeder 5 includes a trough-shaped guard plate 51, a discharge port 52, a baffle plate 53, a guide plate 54, and a conveying pipe 55; a baffle plate 53 is provided at one end of the trough-shaped guard plate 51, and a discharge port 52 is constructed at the bottom of the trough-shaped guard plate 51 at one end of the baffle plate 53. The bottom of the discharge port 52 is connected to the conveying pipe 55, and the guide plate 54 is connected above the baffle plate 53. The two ends of the guide plate 54 are connected to the inner wall of the trough-shaped guard plate 51. Thus, the filtered molding sand and water, after being blocked by the baffle plate 53, fall through the discharge port 52 into the conveying pipe 55 and are transported to the next stage for subsequent processing. The metal, as the separator 6 rotates, eventually falls into the guide plate 54 and finally into the collection frame placed below it for collection and later use. Generally, it is remelted and cast again.

[0033] The filtered molding sand and water mixture can be collected and recycled. Therefore, this application provides a water-sand separation device, which includes a filter plate 7. One end of the filter plate 7 is constructed with multiple water leakage holes 71, and a second filter screen 72 is laid on the filter plate 7.

[0034] In this system, the discharge port of the mixing drum 3 is connected to one end of the protective cover 61 via a flange. The trough-shaped protective plate 51 surrounds the separator 6, and the guide plate 54 is located at the bottom of one end of the separator 6. The conveying pipe 55 extends above one end of the filter plate 7. During use, the mixture of casting sand and metal enters the mixing drum 3 along with water in the hopper 4 for mixing, rolling, and washing. Then, it enters the separator 6 from the discharge end of the mixing drum 3 to separate the metal for recycling. The remaining water and molding sand are collected by the guide 5 and transported to the water-sand separation device for water-sand separation and reuse.

[0035] Thus, the system mixes and washes the material by the mixing drum 3 to facilitate the cooling and separation of the sand and metal, and then separates the metal residue and the water-sand mixture by the separator 6 in the sand-metal separation device to collect, and the water-sand mixture is transported to the water-sand separation device by the guide 5 to separate the water and sand for reuse. Through the design of the system, in the sand casting of non-magnetic metals such as zinc ingots and aluminum ingots, the metal residue is conveniently recovered, and the sand and metal are washed once, without introducing other impurities, without losing materials, without damaging the equipment, and facilitating the separation and recovery of various materials.

[0036] In one embodiment, in fact, the temperature of the sand is very high when it is demolded, and there are some large metal residues in the sand, and the system further comprises a first separation device for initially separating the sand and metal, and a mesh screen is used as the first separation device to preliminarily separate the sand and metal, and the separated sand-metal mixture is transported to the hopper 4. Thus, by performing a simple screening before washing, the large metal can be screened out, the material can be cooled, the material will not produce a large amount of steam when it is washed, and the sand mass is kept stable so as not to overheat, and it is more convenient to loosen when it is washed.

[0037] In one embodiment, in order to conveniently collect and transport the filtered sand-water mixture, the groove-shaped guard plate 51 in the present application comprises three parts, namely an integrally formed bottom arc-shaped plate 511, a middle vertical plate 512, and a top inclined plate 513, the center of the end of the separator 6 away from the guide plate 54 is located in the middle lower part of the middle vertical plate, so that the groove-shaped guard plate 51 can wrap the separator 6, and the metal blocks will not fall on the first filter screen 64 and splash and pollute the environment when the separator 6 rotates. At the same time, in order to facilitate the collection of the metal blocks, the guide plate 54 comprises an arc-shaped bottom plate 542 and a wing plate 541, the arc-shaped bottom plate 542 and the wing plate 541 are integrally formed, and the wing plate 541 is fastened and connected to the groove-shaped guard plate 51 by screws.

[0038] In one embodiment, in order to avoid the metal falling into the sand in various separations of the metal and the sand and water, the pore size of the first filter screen 64 is only for the largest sand particles to pass through. Similarly, in order to recycle the sand, the pore size of the second filter screen 72 is only for the smallest sand particles to pass through, and a gap is provided between the second filter screen 72 and the filter plate 7 to facilitate filtration.

[0039] In one embodiment, as shown in FIG. 6, the second filter screen 72 is provided with a plurality of holes, and the holes are arranged in a staggered manner. Figure 2 and Figure 3As shown, in order to facilitate the joint use of the separator 6 and the material guide 5 in the sand separation device, the central axis of the separator 6 is arranged at an angle of 15 degrees with the central axis of the bottom arc-shaped plate 511, the bottom arc-shaped plate 511 near one end of the groove-shaped guard plate 51 is a half semicircle, the bottom arc-shaped plate 511 at the other end is a three-fifth circle, the middle vertical plate 512 is triangular, and the top inclined plate 513 is trapezoidal. The bottom arc-shaped plate 511 near one end of the groove-shaped guard plate 51 is constructed with an arc-shaped baffle and located below the guard cover 61, so that the groove-shaped guard plate 51 has a gap with the bottom of the separator 6. In this way, the material guide 5 can wrap the separator 6 to prevent the filtered material from splashing during filtration, while facilitating the transportation of each material.

[0040] In one embodiment, as shown in Figure 2 In order to facilitate the metal block to fall on the first filter screen 64 to form auxiliary vibration and help the sand and water to be filtered to prevent them from being condensed on the first filter screen 64 in a large amount, and to reduce the overall weight of the separator 6 to facilitate rotation, the connecting shaft 62 is arranged in a circular tube shape, the spiral plate 63 is arranged in a strip shape with a width consistent with the diameter of the connecting shaft 62 and is spirally fixed to the inside of the connecting shaft 62, and the spiral plate 63 forms a gap with the first filter screen 64 on both sides of the connecting shaft 62, which is consistent with the diameter of the connecting shaft 62. In this way, the spiral plate 63 arranged in a spiral and the first filter screen 64 form a conveying channel similar to a spiral conveyor, which facilitates the transportation of the metal block in the channel while being blocked by the spiral plate 63, and the metal block falls and hits the first filter screen 64 to form a vibration when it rotates to a high point, thereby facilitating the filtration of water and sand.

[0041] In one embodiment, in order to facilitate the transportation of the material and the sufficient mixing and loosening, the mixing drum 3 adopts forward rotation mixing and reverse rotation unloading mixing and is arranged in an inclined manner, like a mortar mixing tank.

[0042] In some embodiments, the application provides a zinc ingot pouring residual material recycling method, which uses a zinc ingot pouring residual material recycling system according to any one of the above embodiments to separate and recycle the sand and the metal residual.

[0043] In some embodiments, as shown in Figure 4 The zinc ingot pouring residual material recycling method includes the following steps: S1: Material and equipment preparation: prepare the material to be separated and recycled, start the mixing drum 3, and prepare the water source for flushing; the method recycles the sand and the metal residual after the zinc ingot is poured with sand and demolded, and the recycling method uses a bucket to recycle, which facilitates the transportation of the material and the sufficient mixing and loosening. The mixing drum 3 adopts forward rotation mixing and reverse rotation unloading mixing and is arranged in an inclined manner, like a mortar mixing tank, and is initially started in a forward rotation manner.

[0044] S2: Mixing: the mixed material of the zinc ingot to be separated and recovered and the sand after the mold is demolded is poured into the hopper 4, and the water pump is started to flush the mixed material with water while pouring the mixed material, so that the material and water are fully washed, cooled, loosened and separated in the mixing drum 3.

[0045] S3: Mixing and sand-metal separation: after the mixed material is mixed in the mixing drum 3 for a period of time with the rotation of the mixing drum 3, the mixed material is transported into the separator 6 by the reverse rotation of the mixing drum 3 for separation of sand, water and metal. During the separation, the mixture of water and sand is filtered through the first filter screen 64 and falls into the material guide 5, which is blocked by the material blocking plate 53 and is transported to the next stage through the material conveying pipe 55 to obtain the water-sand mixture. The remaining metal material falls into the material guide plate 54 and is collected in the collection box to obtain the filtered metal.

[0046] S4: sand-water separation: the water-sand mixture of sand and water is transported to the filter plate 7 through the material conveying pipe 55, and the water falls into the water tank below the filter plate 7 through the water leakage hole 71 to collect the washing water. The sand is collected in a container by manual or setting to obtain the washed sand for use.

[0047] In the specific implementation process, the washing water collected in step S4 is transported to a water tank after sedimentation to obtain clean water as flushing water for the next step S2 mixing. The sediment is dried naturally or by drying or frying and then mixed with new sand for reuse. At the same time, the washed sand collected in step S4 is dried naturally or by drying or frying for use. By observation or metal detection, if there is no metal, the sand is mixed with new sand for reuse. If there is metal, the metal is screened out and then mixed with new sand for reuse.

[0048] In this way, by using the method combined with the system, the metal residue can be conveniently recovered in the sand casting of non-magnetic metals such as zinc ingots and aluminum ingots, and the sand and metal are washed once. Neither other impurities are introduced nor material is lost, nor is the equipment damaged, and the separation and recovery of various materials are facilitated.

[0049] In an embodiment, the use ratio of new sand, washed sand after drying and fine sand is 5:3.5:1.5. Of course, more practical additives can adjust the ratio appropriately, such as one of 5:4:1, 5:3:2 or 4:4:2.

[0050] In one embodiment, the recycling system and recycling method in the present application are mainly used for recycling the excess material of non-magnetic metals such as zinc ingots and aluminum ingots after sand casting, therefore, the present embodiment provides an application of the zinc ingot casting excess material recycling system and recycling method in the sand casting of non-magnetic metals, and the specific application mode is to recycle the excess material of non-magnetic metals after sand casting by using the recycling system and recycling method in any one of the above embodiments.

[0051] Finally, it should be noted that in this document, relationships such as first and second, and the like, are used merely to distinguish one entity or action from another, without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms including, comprising, or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0052] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, i.e. may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the present embodiment.

[0053] The above has described the embodiments of the present application, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those skilled in the art without departing from the scope and spirit of the described embodiments. The selection of the terms used herein is intended to best explain the principles, practical application or improvement of the technology in the market of the embodiments, or to enable other ordinary skilled persons in the art to understand the embodiments disclosed herein.

Claims

1. A zinc ingot pour heel recovery system characterized by, The application relates to a sand-gold mixing and washing device and a sand-gold separating device. The sand-gold mixing and washing device comprises a water pipe, a water pump, a support (2), a mixing roller (3) and a hopper (4); the mixing roller (3) driven by a motor is arranged on the support (2); one end of the mixing roller (3) is provided with an inlet and connected with the hopper (4); the other end of the mixing roller (3) is provided with an outlet; the water pipe is connected with the water pump and communicated with a water source; and the outlet of the water pipe is arranged opposite to the hopper (4). The sand-gold separating device comprises a material guide (5) and a separator (6). The material guide (5) comprises a groove-shaped guard plate (51), a material falling port (52), a material blocking plate (53), a material guide plate (54) and a material conveying pipe (55); one end of the groove-shaped guard plate (51) is provided with the material blocking plate (53); the bottom of the groove-shaped guard plate (51) at one end of the material blocking plate (53) is structured as the material falling port (52); the bottom of the material falling port (52) is connected with the material conveying pipe (55); the material blocking plate (53) is connected with the material guide plate (54) above; and the material guide plate (54) is connected at both ends on the inner wall of the groove-shaped guard plate (51). The separator (6) comprises a cover (61), a connecting shaft (62), a spiral plate (63) and a first filter screen (64); the separator (6) is provided with a cylindrical cover; one end is structured as a connecting flange; a plurality of connecting shafts (62) are fixedly connected on the inner wall of the cover; the outer side of the connecting shafts (62) is surrounded by the first filter screen (64); and the inner side of the first filter screen (64) is connected with the spiral plate (63). The water-sand separating device comprises a filter plate (7); one end of the filter plate (7) is structured as a plurality of water leakage holes (71); and the filter plate (7) is paved with a second filter screen (72). The outlet of the mixing roller (3) is connected with one end of the cover (61) through a flange and communicated; the groove-shaped guard plate (51) surrounds the separator (6); the material guide plate (54) is arranged at the bottom of one end of the separator (6); and the material conveying pipe (55) extends above one end of the filter plate (7). The first separating device is used for initially separating the sand and metal materials; a mesh screen is used as the first separating equipment to preliminarily separate the sand and metal; and the separated sand-gold mixture is conveyed to the hopper (4).

2. The zinc ingot pouring excess material recovery system according to claim 1, characterized in that: The mixing roller (3) is arranged in a normal mixing mode, reversely unloaded and inclined; the aperture of the first filter screen (64) is only for the largest sand particles of the sand to pass through; the aperture of the second filter screen (72) is only for the smallest sand particles to pass through; and a gap is arranged between the second filter screen (72) and the filter plate (7).

3. The zinc ingot pouring excess material recovery system according to claim 1, characterized in that: The bottom of the groove-shaped guard plate (51) is arranged as an arc shape matched with the separator (6); an arc-shaped blocking plate is arranged at one end of the cover (61) and below the cover (61) so that the bottom of the groove-shaped guard plate (51) and the separator (6) have a gap; the filter plate (7) and the second filter screen (72) are arranged as arc shapes; and the material guide plate (54) is arranged as an arc shape.

4. The zinc ingot pouring excess material recovery system of claim 1, wherein: ​ 5. A method for recovering the excess material of zinc ingot casting, characterized in that the separation and recovery of the sand and metal are performed by using the system for recovering the excess material of zinc ingot casting according to any one of claims 1 to 4.

6. A method of recovering excess material from the casting of zinc ingots according to claim 5, characterised in that: The method comprises the following steps: S1: material and equipment preparation: preparing the material to be separated and recovered, starting the mixing drum (3), and preparing the water source for flushing; S2: mixing: pouring the mixed material of the zinc ingot casting and the sand after demolding into the hopper (4), and starting the water pump to flush the mixed material while pouring; S3: mixing and sand-metal separation: after the mixed material is mixed in the mixing drum (3) for a period of time, the mixed material is transported into the separator (6) for separation of the sand, water, and metal. During the separation, the mixture of water and sand is filtered through the first filter screen (64) and falls into the guide (5) which is blocked by the blocking plate (53) and is transported to the next stage through the conveying pipe (55) to obtain the water-sand mixture, and the metal excess is left in the first filter screen (64) and falls into the guide plate (54) with the rotation of the mixing drum (3), and the filtered metal is obtained by sliding into the collection box through the guide plate (54); S4: sand-water separation: the water-sand mixture of the sand and water is transported to the filter plate (7) through the conveying pipe (55), the water falls into the water tank below the filter plate (7) through the water leakage hole (71) to collect the washing water, and the sand is left on the second filter screen (72) and is collected in the container by manual or setting to obtain the washed sand for use.

7. A method of recovering excess material from the casting of zinc ingots according to claim 6, characterised in that: The washing water collected in step S4 is transported to a water tank after sedimentation to obtain clean water as flushing water for the next step S2 mixing, and the sediment is dried naturally or by drying or frying and then mixed with new sand for reuse.

8. A method of recovering excess material from the casting of zinc ingots according to claim 7, characterised in that: The washed sand collected in step S4 is dried naturally or by drying or frying for reuse, and whether there is metal in it is observed or detected by metal, if there is no metal, it is mixed with new sand for reuse, if there is metal, the metal is screened out and then mixed with new sand for reuse.

9. A method of recovering excess material from a zinc ingot casting according to claim 8, characterized in that: The use ratio of new sand, washed sand after drying, and fine sand is 5:3.5:1.

5.

10. The application of a zinc ingot pouring excess material recovery system and recovery method in non-magnetic metal sand mold pouring, characterized in that: The system for recovering the excess material of zinc ingot casting according to any one of claims 1 to 4 and the method for recovering the excess material of zinc ingot casting according to any one of claims 5 to 9 are used to recover the excess material of non-magnetic metal sand casting.

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