A tin concentrate recyclable smelting system and processing technology thereof

Abstract

The invention discloses a tin concentrate recyclable smelting system and a processing technology thereof, and belongs to the technical field of tin concentrate processing. The invention comprises a smelting electric furnace, an electrode rod synchronous replacement device on the top of the smelting electric furnace, and a tin liquid treatment device after the smelting electric furnace smelts and discharges, wherein: the tin liquid treatment device comprises a sedimentation tank and a static forming tank, the sedimentation tank is arranged at the bottom of the discharge port of the smelting electric furnace, and an overflow port is opened at the top of the sedimentation tank and connected to the static forming tank; the electrode rod synchronous replacement device comprises a support platform and a tin concentrate transfer mechanism and an electrode rod lifting mechanism fixed on the support platform, after the furnace body of the smelting electric furnace passes through the support platform, its furnace top protrudes from the support platform; the electrode rod lifting mechanism is symmetrically arranged vertically around the furnace top; the furnace top surrounding the middle opening of the furnace top is also provided with symmetrically distributed electrode rod insertion ports, and when the material is fed through the middle opening, the material falls relatively evenly between the electrode rods, thereby achieving the technical effect of balanced heating of the material.

Description

Technical Field

[0001] The invention relates to the technical field of tin concentrate processing, and more specifically to a tin concentrate recyclable smelting system and a processing technology thereof. Background Art

[0002] In a smelting electric furnace used to produce tin, ferroalloys, silicon, pig iron, etc., consumable electrode rods are used, generally carbon electrodes, which are immersed in the charge during the operation of the smelting electric furnace. The electrode is clamped by an electrode clamp. The working current is passed to the electrode clamp and then to the electrode. The electrode is adjusted up and down in the vertical direction by a hydraulic cylinder to maintain a preset electrode current or a preset resistance value. The above-mentioned electrode clamp system also includes a device for making the electrode slide through the electrode clamp to compensate for the consumption of the electrode. The electrode rods used in the tin concentrate electric furnace are located at the top of the smelting electric furnace. They are consumables and need to be replaced frequently. Due to the large weight of the electrode rods, a crane is required for lifting during the replacement process. However, ordinary crane-lifting installation is difficult to align with the installation port, resulting in poor installation efficiency. Moreover, interference collisions are prone to occur, resulting in electrode rod loss and safety risks. When feeding the existing tin concentrate electric furnace, the concentrate is generally transported to the feed port on the furnace top by a conveyor. In order to facilitate feeding, the feed port is generally opened on one side of the furnace top. This causes a technical problem of uneven feeding of the concentrate in the electric furnace after feeding, which in turn leads to uneven heating of the concentrate and different degrees of consumption of the electrode rods. To solve this problem, technicians generally open more symmetrically distributed feed ports on the side of the furnace top and feed from multiple feed ports at the same time. However, this method of solving the problem often increases the installation cost and production cost of the feeding.

[0003] In the smelting furnace used to produce tin, the tin concentrate powder is in a fluid state after smelting in the smelting furnace. Due to the different components in the liquid, the density is naturally different. Among them, the metal component mainly composed of tin has a larger density. After the fluid flows out of the smelting furnace, the tin slag and the tin liquid are generally separated by the principle of static stratification due to different densities.

[0004] In the existing tin concentrate electric furnace tin concentrate, when the tin slag after layering is recycled, the cooled tin slag needs to be split due to its large volume, which is time-consuming and labor-intensive, and cannot be recycled, resulting in low production efficiency. In addition, when the fluid flows out of the smelting electric furnace, the smoke and dust in the furnace also overflows, causing a certain degree of environmental pollution. Summary of the invention

[0005] 1. Technical problem to be solved by the invention

[0006] Aiming at the problem that uneven feeding of existing tin concentrate electric furnace leads to uneven temperature rise of concentrate, unbalanced smelting, and balanced temperature rise of materials is affected when discharging and cooling tin slag back into the furnace, the present invention designs a tin concentrate recyclable smelting system and its processing technology. The tin slag is cooled and crushed in a static forming pool, and is fed together with other tin concentrate through the middle opening of the furnace top in time. Electrode rods are symmetrically inserted around the middle opening, so as to achieve the purpose of balanced temperature rise of materials and smelting of concentrate.

[0007] 2. Technical solution

[0008] In order to achieve the above object, the technical solution provided by the present invention is:

[0009] A tin concentrate recyclable smelting system, comprising a smelting electric furnace, an electrode rod synchronous replacement device on the top of the smelting electric furnace, and a tin liquid treatment device after smelting and discharging from the smelting electric furnace, wherein: the tin liquid treatment device comprises a sedimentation tank and a static forming tank, the sedimentation tank is arranged at the bottom of the discharge port of the smelting electric furnace, and an overflow port is opened at the top of the sedimentation tank and connected to the static forming tank; the tin slag on the upper layer of the sedimentation tank flows into the static forming tank through its overflow port, and the refined tin liquid on the lower layer is transported to the next process through its bottom outlet; the electrode rod synchronous replacement device comprises a support platform and a tin concentrate transfer mechanism and an electrode rod lifting mechanism fixed on the support platform, and after the furnace body of the smelting electric furnace passes through the support platform, its furnace top protrudes from the support platform; the The electrode rod lifting mechanism is symmetrically arranged vertically around the furnace top; symmetrically distributed electrode rod insertion openings are also provided on the furnace top surrounding the central opening of the furnace top, and when the material is fed through the central opening, it can fall relatively evenly between the electrode rods, thereby achieving the technical effect of balanced heating of the material; the feeding end of the tin concentrate transfer mechanism is transversely fixed to the supporting platform through its bracket, and the dropping opening of the discharging end is sealed and connected with the central opening of the furnace top; the electrode rod lifting mechanism inserts the electrode rod into the electrode rod insertion opening of the furnace top; the tin slag in the static forming pool is crushed after forming, and returned to the smelting electric furnace for recycling through the tin concentrate transfer mechanism, and while the tin slag is returned in time, excessive loss of heat in the tin slag is also avoided.

[0010] A further technical solution is that the sedimentation tank corresponds to the smelting electric furnace one by one, and the sedimentation tanks are arranged in pairs on both sides of the static forming tank and are symmetrically distributed. Such a static forming tank can correspond to multiple pairs of smelting electric furnaces, thereby improving the utilization rate of the static forming tank and improving production efficiency. The bottom of the static forming tank is provided with multiple forming blind holes for forming tin slag forming ingots. The forming blind holes naturally divide the tin slag to avoid the secondary division of the formed tin slag, thereby saving time and effort and being able to achieve the purpose of rapid recycling; the electrode rod synchronous replacement device also includes a tin concentrate lifting mechanism, which is generally an auger conveyor. The bottom feed port of the tin concentrate lifting mechanism is connected to the tin concentrate temporary storage bin, and the upper discharge port is connected to the feed end of the tin concentrate transfer mechanism; there are three electrode rod lifting mechanisms, which are arranged in the shape of finished products around the furnace top; the electrode rod lifting mechanism includes a vertical fixed frame, a lifting arm, a winch and a pulley mechanism; the electrode rod lifting mechanism is fixed to the support platform through its vertical fixed frame. There is no need to set up multiple tin concentrate lifting mechanisms. One tin concentrate lifting mechanism connected to a tin concentrate transfer mechanism can achieve the purpose of feeding the material through the opening in the middle of the furnace top; there is no need to set up multiple electrode rod lifting mechanisms. Three "T"-shaped arrangements can achieve the purpose of balanced heating of the material.

[0011] A further technical solution is that the formed blind hole is a frustum or cone shape, and the tin slag formed ingot after forming also has a corresponding frustum or cone shape. The formed blind hole is similar to a mold, which is convenient for demoulding, and a handle rod is pre-installed inside to facilitate lifting out of the formed blind hole after forming; the vertical fixed frame includes vertical pillars and support guide columns inside the pillars, and also includes a lifting arm laterally fixedly connected to the top of the pillars and the support guide columns; the pillars and the support guide columns are fixedly connected to the supporting platform; one end of the lifting arm is fixedly connected to a guide frame that is slidably connected to the support guide column, and the other end is fixedly connected to an electrode rod fixing piece; the pulley mechanism includes fixed pulley one, fixed pulley two and fixed pulley three, and a fixed pulley parallel to the fixed pulley three, which are arranged and fixed in sequence on the upper surface of the lifting arm. The fixed pulley four of the series also includes a movable pulley one fixed on the upper surface of the lifting arm, and the lifting arms close to the pulleys two and three are respectively perforated with through holes one and two; the winch is fixed to the lower outer side of the pillar, and the free end of its traction rope is sequentially passed around the fixed pulley one, the fixed pulley four, downwardly passed through the through hole two, then passed around the movable pulley one, upwardly passed through the through hole two, then passed around the fixed pulley three, the fixed pulley two, and then passed through the through hole one downward, and then fixedly connected to the guide frame, fixed to the support platform through a stable vertical fixing frame, the cooperation of the support guide column and the guide frame of the vertical guided lifting, and the cooperation of the winch-type lifting arm with the fixed pulley and the movable pulley in the pulley mechanism, so as to achieve the technical effect of accurately aligning the installation port to install the electrode rod and improving the replacement efficiency.

[0012] Further technical solution: The pulley mechanism further includes a fixed pulley five near the second through hole and a movable pulley two juxtaposed with the movable pulley one on the upper surface of the lifting arm. The fixed pulley five and the fixed pulley three are arranged on both sides of the second through hole. The free end of the towing rope sequentially bypasses the fixed pulley one, the fixed pulley four, passes downward through the second through hole, then bypasses the movable pulley one, passes upward through the second through hole, then bypasses the fixed pulley five, passes downward through the second through hole, bypasses the movable pulley two, passes upward through the second through hole, then bypasses the fixed pulley three, the fixed pulley two, and then passes downward through the first through hole and is fixedly connected to the guiding frame. The two movable pulleys cooperate to make the operation more labor-saving and effectively increase the lifting weight.

[0013] Further technical solution: The longitudinal cross-section of the handle rod is in the shape of a cross. The forming blind holes are of the same size and are evenly distributed in the static forming pool. When the tin dross is formed, the combination degree between the tin dross forming ingot and the handle rod is improved. When the tin dross forming ingot is in a frustum shape, the length of the bottom cross bar of the handle rod can be the same as or slightly smaller than the bottom circle diameter of the frustum, and the combination degree is higher. The wheel directions of the fixed pulley five and the fixed pulley three are perpendicular to each other, which can effectively avoid the mutual interference caused by the four-strand towing rope formed after winding.

[0014] Further technical solution: The handle rod is a tripod, and the structure is relatively stable, which can effectively prevent the handle rod from being knocked down when the tin dross fluid flows into the forming blind hole after the handle rod is pre-placed in the forming blind hole. The electrode rod fixing part is a single-slit or double-slit half sleeve, which is detachable and convenient for installing and disassembling the electrode rod. A sealing ring is fixedly connected to the bottom end surface of the half sleeve to prevent the mine dust from overflowing.

[0015] Further technical solution: It further includes an exhaust gas and dust treatment device. The exhaust gas and dust treatment device includes a reciprocating movable cover, an exhaust mechanism, and a dust collection cover covering the sedimentation tank. The reciprocating movable cover covers the upper part of the static forming pool, and a ventilation pipe is connected and fixed to the top of the reciprocating movable cover. The exhaust mechanism is horizontally fixed between the two smelting electric furnaces and includes a horizontal gas collecting main pipe and an exhaust pipe. The gas collecting main pipe is communicated with both the ventilation pipe and the exhaust pipe. The soot is discharged and treated through the exhaust mechanism, such as being discharged to a bag dust removal device or a desulfurization device for treatment. The top of the dust collection cover is externally connected to a ventilation pipe. Above the inner side of the sedimentation tank and respectively near both ends of the gas collecting main pipe, the gas collecting main pipe is provided with a first gas collecting branch pipe. The exhaust pipe is connected to the middle of the gas collecting main pipe, and a second gas collecting branch pipe and a third gas collecting branch pipe are respectively provided between each first gas collecting branch pipe and the exhaust pipe, realizing full-closed management of the discharging to avoid the soot from overflowing and polluting the environment.

[0016] According to a further technical solution, sliders are fixed on the front and rear side walls of the reciprocating hood, and the bottom of the reciprocating hood sinks into the bottom of the static forming pool and is close to the forming blind hole; a guide rail that cooperates with the slider is fixed on the pool edge of the static forming pool, and the reciprocating hood plays a role of sealing and scraping materials during the reciprocating motion on the guide rail, that is, the smoke and dust generated during the static process is sealed in the reciprocating hood and then discharged through the ventilation pipe on the top. During the discharge process, the tin slag in the forming blind hole is also cooled and formed, and the reciprocating hood moves During the process, the tin slag fluid can also be scraped into the forming blind hole. It is for this reason that the bottom of the reciprocating cover is sunk to the bottom of the static forming pool and close to the forming blind hole to facilitate scraping. After all, if it is just to prevent smoke and dust from polluting the environment, there is no need to sink the bottom of the reciprocating cover. The bottom of the reciprocating cover can be slid on the guide rail; a rolling rail member rollingly connected to the support guide column is fixed in the guide frame, so that the guide frame drives the lifting arm to upgrade from sliding to rolling, and the lifting of the lifting arm is more convenient and efficient.

[0017] A further technical solution is that the rolling rail member includes a connecting shaft connecting two opposite frame plates of the guide frame in the guide frame, and a rotating wheel sleeved on both ends of the connecting shaft, which converts sliding into rolling, saving time and effort; ventilation holes are opened on the left and right side walls of the reciprocating hood, and the ventilation holes are opened and closed by cooperating sliding doors. After the smoke and dust treatment is completed, the cold air is inhaled to accelerate the forming of tin slag into tin slag forming ingots; the bottom of the slider is rotatably connected to a roller; the bottom of the dust collecting hood is symmetrically fixed with an elastic mechanism, so that there is a certain margin when the top ventilation pipe is connected to the gas collecting branch pipe, thereby improving the versatility of the dust collecting hood.

[0018] A processing technology of a tin concentrate recyclable smelting system, comprising the following steps:

[0019] S1. Synchronous replacement of electrode rods: On the top of the smelting electric furnace, the electrode rods are synchronously replaced through the electrode rod synchronous replacement device;

[0020] S2, discharge: discharge the smelted fluid in the smelting furnace into the sedimentation tank and let it stand, then open the overflow port, the tin slag on the upper layer flows into the static forming tank, and the refined tin liquid on the lower layer is transported to other processes through the bottom outlet;

[0021] S3, standing: the tin slag is distributed to the forming blind hole (31) and is standing to form;

[0022] S4, return material: the tin slag is crushed after being formed and returned to the smelting furnace for recycling through the tin concentrate transfer mechanism;

[0023] S5. Exhaust: During the molding process, open the exhaust pipe to discharge the smoke and dust.

[0024] A processing technology for a tin concentrate recyclable smelting system, wherein a reciprocating cover reciprocates on a static forming pool, and a ventilation pipe is alternately connected with a second gas collecting branch pipe and a third gas collecting branch pipe, so as to separate tin slag and tin liquid in a smelting electric furnace on both sides of the static forming pool and form the separated tin slag in the static forming pool.

[0025] 3. Beneficial effects

[0026] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0027] (1) The tin concentrate recyclable smelting system of the present invention has electrode rods symmetrically arranged around the central opening of the furnace roof. When the material is fed through the central opening, it can fall between the electrode rods in a relatively balanced manner, thereby achieving the technical effect of balanced heating and smelting of the material; the smoke and dust generated by the overflow of the smelting electric furnace and the formation of tin slag are discharged externally through the exhaust mechanism, such as being discharged to a bag dust removal device or a desulfurization device for treatment, and then the tin slag is naturally divided through the forming blind holes, avoiding the secondary division of the formed tin slag, thereby achieving the purpose of saving time and labor and improving production efficiency, saving energy and reducing consumption, and avoiding environmental pollution;

[0028] (2) The tin concentrate recyclable smelting system of the present invention, the electrode rod synchronous replacement device, the tin liquid treatment device and the waste gas and waste dust treatment device cooperate to avoid environmental pollution while timely recycling the tin slag, thereby achieving the technical effects of reducing heat loss, material balanced temperature smelting and improving production efficiency;

[0029] (3) The tin concentrate recyclable smelting system of the present invention can discharge smoke and dust, and can also make reciprocating motion on the static forming pool, so as to be alternately used by the smelting electric furnaces on both sides of the static forming pool, thereby improving their utilization efficiency; it can also evenly scrape the fluid tin slag into the forming blind hole, thereby increasing the speed of tin slag entering the mold, and achieving unexpected technical effects; there is no need to set up multiple tin concentrate lifting mechanisms, and one tin concentrate lifting mechanism is connected to a tin concentrate transfer mechanism to achieve the purpose of feeding the material through the opening in the middle of the furnace top; there is no need to set up multiple electrode rod lifting mechanisms, and three electrode rods are arranged in a herringbone shape to achieve the purpose of balanced temperature smelting of the material;

[0030] (4) In the tin concentrate recyclable smelting system of the present invention, the ventilation opening is opened and closed by a sliding door provided in cooperation. After the smoke and dust treatment is completed, the cold air is inhaled to accelerate the forming of the tin slag into a tin slag forming ingot; the roller converts the sliding reciprocating movement of the reciprocating movable cover into rolling reciprocating movement, which saves time and labor;

[0031] (5) The recyclable smelting system for tin concentrate of the present invention has an external branch pipe on the gas collecting main pipe. Cooperating with the reciprocating motion of the reciprocating movable hood, it realizes full-closed management of the discharge of the electric furnace, avoiding the overflow of soot and dust and polluting the environment. Moreover, by means of the overflow port at the upper part of the sedimentation tank, the fluid-state tin slag is directly flowed to the static forming tank for forming. Cooperating with the electric furnaces on both sides, continuous cyclic production of the static forming tank can be achieved;

[0032] (6) For the recyclable smelting system for tin concentrate of the present invention, the handle rod is convenient for being lifted out from the forming blind hole after forming. The longitudinal cross-section of the handle rod is in a "plus" shape, which improves the bonding degree between the formed tin slag and the handle rod when the tin slag is formed;

[0033] (7) The recyclable smelting system for tin concentrate of the present invention is fixed to the working surface by a stable double-column vertical fixing frame. Through the cooperation of the vertically-guided lifting support guide column and the guide frame, the support guide column also has the dual effects of support and guidance; and through the cooperation of the winch-type lifting arm and the fixed pulley and movable pulley in the pulley mechanism, the technical effects of accurately aligning the installation port to install the electrode rod and improving the replacement efficiency are achieved; in the pulley mechanism, the double movable pulleys and the fixed pulley cooperate with each other, making the operation more labor-saving and effectively improving the lifting weight; the fixed pulley five and the fixed pulley three are in a mutually perpendicular state, and one of the two pulleys is vertical and the other is horizontal, which can effectively avoid the mutual interference caused by the 4-strand traction ropes formed after the double movable pulleys are wound; moreover, the split sleeve-type electrode rod fixing part is detachable, which is convenient for installing and disassembling the electrode rod;

[0034] (8) In the recyclable smelting system for tin concentrate of the present invention, the rolling rail member upgrades the lifting of the guide frame driving the lifting arm from sliding to rolling, making the lifting of the lifting arm more convenient and efficient; the rolling rail member with the symmetrically distributed connecting shafts and rotating wheels makes the rolling friction force evenly distributed, making the lifting of the lifting arm more efficient and labor-saving, and improving the service life of the lifting arm; the stepped rotating wheel has steps stuck on the side of the support guide column, which also plays a guiding role while rolling.

[0035] (9) For the recyclable smelting system for tin concentrate of the present invention, one static forming tank can correspond to multiple pairs of smelting electric furnaces, improving the utilization rate of the static forming tank and the production efficiency; the sizes of the forming blind holes can be designed to be the same, which is convenient for batch processing. Description of the Drawings

[0036] Figure 1 It is a schematic structural diagram of the recyclable smelting system for tin concentrate of the present invention;

[0037] Figure 2 It is a schematic structural diagram of the electrode rod synchronous replacement device in the present invention;

[0038] Figure 3 It is a schematic structural diagram of the tin concentrate transfer mechanism in the present invention;

[0039] Figure 4 A schematic diagram of the structure of the electrode rod lifting mechanism in the present invention;

[0040] Figure 5 for Figure 4 The schematic diagram of the structure after the enlargement of A in the middle;

[0041] Figure 6 It is a structural schematic diagram of the electrode rod lifting mechanism in Example 3;

[0042] Figure 7 Schematic diagram of the lifting state of the electrode rod in the present invention

[0043] Figure 8 It is a schematic structural diagram of the tin liquid processing device in the present invention;

[0044] Fig. 9 for Figure 8 The enlarged schematic diagram of point B in FIG.

[0045] Fig.10 A schematic diagram of the structure of the dust collecting hood in the present invention;

[0046] Fig.11 It is a schematic diagram of the structure of the tin slag forming ingot with a handle after forming;

[0047] Fig.12 This is a schematic diagram of the structure of the preferred tin slag forming ingot with a handle bar after forming in Example 3;

[0048] Fig.13 This is a schematic diagram of the structure of a preferred handle bar in Example 3;

[0049] Fig.14 This is a schematic diagram of the structure of the handle bar in Example 4.

[0050] In the figure: 1-smelting electric furnace; 2-electrode rod synchronous replacement device; 3-tin liquid treatment device; 4-waste gas and dust treatment device; 5-reciprocating cover; 6-exhaust mechanism; 7-dust collection cover; 11-discharging port; 20-electrode rod lifting mechanism; 21-vertical fixed frame; 22-lifting arm; 23-winding machine; 24-pulley mechanism; 25-support platform; 26-electrode rod; 28-tin concentrate lifting mechanism; 29-tin concentrate transfer mechanism; 32-sedimentation tank; 33-static molding tank; 34-tin slag molding ingot; 51-slider; 52-vent; 53-sliding door; 55-ventilation pipe; 56-roller; 61-gas collecting main pipe; 63-exhaust pipe; 71-ventilation pipe; 72-elastic mechanism; 21 1-lifting arm; 212-pillar; 213-supporting guide column; 221-guide frame; 222-electrode rod fixing piece; 223-rolling rail piece; 224-sealing ring; 231-traction rope; 241-fixed pulley one; 242-fixed pulley two; 243-fixed pulley three; 244-fixed pulley four; 245-fixed pulley five; 246-movable pulley one; 247-movable pulley two; 291-bracket; 292-feeding port; 321-overflow port; 331-molded blind hole; 332-guide rail; 341-handle bar; 611-gas collecting branch pipe one; 612-gas collecting branch pipe two; 613-gas collecting branch pipe three; 2111-through hole one; 2112-through hole two; 2231-rotating wheel; 2232-connecting shaft. DETAILED DESCRIPTION

[0051] In order to further understand the content of the present invention, the present invention is described in detail in conjunction with the accompanying drawings.

[0052] Example 1

[0053] The tin concentrate smelting system of this embodiment can be circulated, such as Figure 1 As shown, it includes a smelting electric furnace 1, an electrode rod synchronous replacement device 2 on the top of the smelting electric furnace 1 and a tin liquid treatment device 3 after smelting the material discharged from the smelting electric furnace 1, wherein: Figure 1 and 8 As shown, the tin liquid processing device 3 includes a sedimentation tank 32 and a static forming tank 33. The sedimentation tank 32 is arranged at the bottom of the discharge port 11 of the smelting electric furnace 1. The upper part of the sedimentation tank 32 is opened with an overflow port 321 connected to the static forming tank 33. The tin slag on the upper layer of the sedimentation tank 32 flows into the static forming tank 33 through its overflow port 321, and the refined tin liquid on the lower layer is transported to the next process through its bottom outlet; Figure 2As shown, the electrode rod synchronous replacement device 2 includes a support platform 25 and a tin concentrate transfer mechanism 29 and an electrode rod lifting mechanism 20 fixed on the support platform 25. After the furnace body of the smelting electric furnace 1 passes through the support platform 25, its furnace top protrudes from the support platform 25; the electrode rod lifting mechanism 20 is symmetrically arranged vertically around the furnace top; symmetrically distributed electrode rod insertion openings are also opened on the furnace top around the middle opening of the furnace top, and when the material is fed through the middle opening, it can fall relatively evenly between the electrode rods, thereby achieving the technical effect of balanced heating of the material; as shown in FIG. Figure 2 , 3 As shown, the feed end of the tin concentrate transfer mechanism 29 is transversely fixed on the support platform 25 through its bracket 291, and the discharge port 292 of the discharge end is sealed and connected to the middle opening of the furnace roof; the electrode rod lifting mechanism 20 inserts the electrode rod 26 into the electrode rod insertion port of the furnace roof; the tin slag in the static forming pool 33 is crushed after forming and returned to the smelting electric furnace 1 through the tin concentrate transfer mechanism 29 for recycling. Moreover, the timely return of the tin slag also avoids excessive heat loss in the tin slag. Figure 1 , 8As shown, the sedimentation tank 32 corresponds to the smelting electric furnace 1 one by one, and the sedimentation tanks 32 are arranged in pairs on both sides of the static forming tank 3 and are symmetrically distributed. Such a static forming tank can correspond to multiple pairs of smelting electric furnaces, thereby improving the utilization rate of the static forming tank and improving production efficiency. The bottom of the static forming tank 33 is provided with a plurality of forming blind holes 331 for forming tin slag forming ingots 34. The forming blind holes 331 naturally divide the tin slag to avoid the secondary division of the formed tin slag, thereby saving time and effort and being able to achieve the purpose of rapid recycling; the electrode rod synchronous replacement device 2 also includes a tin concentrate lifting mechanism 28, which is generally an auger conveyor. The bottom feed port of the tin concentrate lifting mechanism 28 is communicated with the tin concentrate temporary storage bin, and the upper discharge port is communicated with the feed end of the tin concentrate transfer mechanism 29; the electrode rod lifting mechanism 20 is three, and the finished product is arranged around the furnace top in the shape of a Chinese character, and the three electrode rods arranged in the shape of a Chinese character are connected to the tin concentrate storage bin. The electrode rod lifting mechanism 20 can install the three electrode rods 26 and fix the electrode rods 26 on the furnace roof as a fixing device of the electrode rods 26. When the electrode rods 26 reach their service life and become waste electrode rods 26, the three electrode rod lifting mechanisms 20 lift the three waste electrode rods 26 at the same time, dismantle the waste electrode rods 26, and then replace the new electrode rods 26 with new ones and insert them into the electrode rod insertion port, so that the replacement efficiency is high. In this way, the three electrode rod lifting mechanisms 20 can play a dual role of fixing the electrode rods 26 after replacement, and cooperate with the auger-type conveyor for dropping materials at the middle opening on the furnace roof to achieve the technical effect of balanced heating and smelting of materials; the electrode rod lifting mechanism 20 includes a vertical fixing frame 21, a lifting arm 22, a winch 23 and a pulley mechanism 24; the electrode rod lifting mechanism 20 is fixed on the support platform 25 through its vertical fixing frame 21. There is no need to set up multiple tin concentrate lifting mechanisms 28. One tin concentrate lifting mechanism 28 connected to one tin concentrate transfer mechanism 29 can achieve the purpose of feeding the material through the opening in the middle of the furnace top; there is no need to set up multiple electrode rod lifting mechanisms 20. Three of them are arranged in a herringbone shape to achieve the purpose of balanced heating of the material.

[0054] like Figure 8 , 10As shown, it also includes a waste gas and waste dust treatment device 4, which includes a reciprocating cover 5, an exhaust mechanism 6 and a dust collecting cover 7 covering the top of the sedimentation tank 2; the reciprocating cover 5 covers the top of the static forming pool 33, and the top of the reciprocating cover 5 is connected and fixed with a ventilation pipe 55; the exhaust mechanism 6 is transversely fixed between the two smelting electric furnaces 1, including a transverse gas collecting main pipe 61 and an exhaust pipe 63, the gas collecting main pipe 61 is connected with the ventilation pipe 55 and the exhaust pipe 63, and the exhaust mechanism is used to collect the waste gas and waste dust. The smoke is discharged for treatment, for example, to a bag dust removal device or a desulfurization device for treatment; the top of the dust collecting hood 7 is connected to an external ventilation pipe 71; the gas collecting main pipe 61 is provided with a gas collecting branch pipe 1 611 on the upper inner side of the sedimentation tank 2, respectively close to both ends of the gas collecting main pipe 61; the exhaust pipe 63 is connected to the middle of the gas collecting main pipe 61, and a gas collecting branch pipe 2 612 and a gas collecting branch pipe 3 613 are respectively provided between each gas collecting branch pipe 1 611 and the exhaust pipe 63, so as to achieve fully closed management of the discharge and avoid smoke and dust overflow and pollution of the environment.

[0055] The processing technology of the tin concentrate recyclable smelting system of this embodiment comprises the following steps:

[0056] S1, synchronous replacement of electrode rods: on the top of the smelting electric furnace 1, the electrode rods 26 are synchronously replaced by the electrode rod synchronous replacement device 2;

[0057] S2, discharge: discharge the smelted fluid in the smelting furnace 1 into the sedimentation tank 2 and let it stand, then open the overflow port 21, the tin slag on the upper layer flows into the static forming tank 3, and the refined tin liquid on the lower layer is transported to other processes through the bottom outlet;

[0058] S3, statically standing: the tin slag is distributed to the forming blind hole 31 and statically formed;

[0059] S4, return material: the tin slag is crushed after being formed, and returned to the smelting furnace 1 for recycling through the tin concentrate transfer mechanism 29;

[0060] S5. Exhaust: During the molding process, the exhaust pipe 63 is opened to exhaust the smoke and dust therein, for example, to a bag dust removal device or a desulfurization device for treatment, so as to avoid the smoke and dust from polluting the environment.

[0061] Example 2

[0062] The tin concentrate recyclable smelting system of this embodiment has the same basic structure as that of the first embodiment, and the difference and improvement are as follows: the forming blind hole 331 is in the shape of a frustum or cone, and the tin slag forming ingot after forming is also in the shape of a corresponding frustum or cone. The forming blind hole is similar to a mold, which is convenient for demolding, and a handle bar 341 is pre-set inside to facilitate the removal from the forming blind hole after forming; Figure 4As shown, the vertical fixed frame 21 includes a vertical pillar 212 and a guide column 213 inside the pillar 212, and also includes a lifting arm 211 fixedly connected to the top of the pillar 212 and the guide column 213 in a transverse direction; the pillar 212 and the guide column 213 are both fixedly connected to the support platform 25; one end of the lifting arm 22 is fixedly connected to a guide frame 221 that is slidably connected to the guide column 213, and the other end is fixedly connected to an electrode rod fixing piece 222; the pulley mechanism 24 includes a fixed pulley 1 241, a fixed pulley 242 and a fixed pulley 3 243 arranged and fixed on the upper surface of the lifting arm 211 in sequence, and a fixed pulley 4 244 parallel to the fixed pulley 3 243, and also includes a movable pulley 1 246 fixed to the upper surface of the lifting arm 22, close to the pulleys 242 and 243. The lifting arm 211 of the fixed pulley three 243 is respectively pierced with a through hole one 2111 and a through hole two 2112; the winch 23 is fixed to the lower outer side of the pillar 212, and the free end of its traction rope 231 is passed around the fixed pulley one 241, the fixed pulley four 244, downward through the through hole two 2112, then around the movable pulley one 246, upward through the through hole two 2112, then around the fixed pulley three 243, the fixed pulley two 242, and then downward through the through hole one 2111, and then fixedly connected to the guide frame 221, fixed to the support platform through a stable vertical fixing frame, the cooperation of the vertical guided lifting support column and the guide frame, and the cooperation of the winch-type lifting arm with the fixed pulley and the movable pulley in the pulley mechanism, so as to achieve the technical effect of accurately aligning the installation port to install the electrode rod and improving the replacement efficiency.

[0063] Example 3

[0064] The tin concentrate recyclable smelting system of this embodiment has the same basic structure as that of embodiment 2, except that: Figure 6 As shown, the pulley mechanism 24 also includes a fixed pulley 5 245 near the through hole 2112 and a movable pulley 247 on the upper surface of the lifting arm 22 and parallel to the movable pulley 1 246. The fixed pulley 5 245 and the fixed pulley 3 243 are arranged on both sides of the through hole 2112. The free end of the traction rope 231 passes through the fixed pulley 1 241, the fixed pulley 4 244, passes through the through hole 2112 downward, then passes through the movable pulley 1 246, passes through the through hole 2112 upward, then passes through the fixed pulley 5 245, passes through the through hole 2112 downward, passes through the movable pulley 2 247, passes through the through hole 2112 upward, then passes through the fixed pulley 3 243, the fixed pulley 2 242, and passes through the through hole 1 2111 downward, and then is fixedly connected to the guide frame 221. The double movable pulleys work together, making the operation more labor-saving and effectively increasing the lifting weight. Fig.12 , 13As shown, the longitudinal cross-section of the handle rod 341 is in the shape of a Chinese character "shi"; the forming blind holes 331 are of the same size and are evenly distributed in the static forming pool 33, which improves the bonding degree between the slag ingot and the handle rod during slag forming. When the slag ingot is in the shape of a frustum of a cone, the length of the bottom cross bar of the handle rod can be the same as or slightly smaller than the bottom circle diameter of the frustum, and the bonding degree is higher; the wheel directions of the fifth fixed pulley 245 and the third fixed pulley 243 are perpendicular to each other, which can effectively avoid the mutual interference caused by the traction ropes forming 4 strands after winding.

[0065] Embodiment 4

[0066] A tin concentrate recyclable smelting system in this embodiment has the same basic structure as that in Embodiment 3. The differences and improvements are as follows: As Fig.14 shown, the handle rod 341 is a triangular frame with a relatively stable structure, which can effectively prevent the handle rod from being knocked down when the slag fluid flows into the forming blind hole after the handle rod is pre-placed in the forming blind hole; the electrode rod fixing part 222 is a single-slit or double-slit split sleeve, which is detachable and convenient for installing and disassembling the electrode rod 26. The state of the electrode rod 26 being tightened by the split sleeve and ready to be lifted is as Figure 7 shown. It is convenient for installing and disassembling the electrode rod; a sealing ring 224 is fixedly connected to the bottom end surface of the split sleeve to prevent dust from overflowing. Sliders 51 are fixed on the front and rear side walls of the reciprocating movable cover 5, and the bottom of the reciprocating movable cover 5 sinks into the bottom of the static forming pool 33 and is close to the forming blind hole 331; a guide rail 332 cooperating with the slider 51 is fixed on the edge of the static forming pool 33. During the reciprocating movement of the reciprocating movable cover on the guide rail, it plays a role of sealing and scraping materials, that is, the soot generated during the static process is enclosed in the reciprocating movable cover and discharged through the ventilation pipe at the top. During the discharging process, it also plays a role of cooling and forming the slag in the forming blind hole. Moreover, during the movement of the reciprocating movable cover, it can also scrape the slag fluid into the forming blind hole. For this reason, the bottom of the reciprocating movable cover is sunk to the bottom of the static forming pool and is close to the forming blind hole to facilitate scraping. After all, if it is only for preventing soot from polluting the environment, there is no need to sink the bottom of the reciprocating movable cover, and the bottom of the reciprocating movable cover can slide on the guide rail; a rolling rail part 223 that is in rolling connection with the support guide post 213 is fixed in the guide frame 221, which upgrades the lifting of the lifting arm driven by the guide frame from sliding to rolling, and the lifting of the lifting arm is more convenient and efficient.

[0067] In the tin concentrate recyclable smelting system of this embodiment, through the setting of the reciprocating movable cover 5 with a special structure, the reciprocating movable cover 5 does not need to be designed as a full-coverage type covering the static forming pool 33. After all, generally, the smelting electric furnaces 1 on both sides of the static forming pool 33 do not discharge materials at the same time, but generally discharge materials alternately. The reciprocating movable cover 35 only needs to move above the static forming pool 33 at the position of the smelting electric furnace 1 where the material is discharged.

[0068] The processing technology of the tin concentrate recyclable smelting system of this embodiment comprises the following steps:

[0069] S0, synchronous replacement of electrode rods: on the top of the smelting electric furnace 1, the electrode rods 26 are synchronously replaced by the electrode rod synchronous replacement device 2;

[0070] S1, discharge of the left smelting furnace: after the tin concentrate is smelted in the left smelting furnace 1, the dust collecting hood 7 is covered on the sedimentation tank 32, and the gas collecting branch pipe 1 611 is connected to the ventilation pipe 71; after the fluid of the left smelting furnace 1 is discharged into the sedimentation tank 32 and left to stand, the overflow port 321 is opened, and the tin slag on the upper layer of the sedimentation tank 32 flows into the static forming tank 33, and the refined tin liquid on the lower layer is transported to other processes through the bottom outlet; the reciprocating hood 5 is moved to the left and covered on the left part of the static forming tank 33, and the ventilation pipe 55 is connected to the gas collecting branch pipe 2 612, and the discharge is fully closed to avoid spillover and pollution of the environment;

[0071] S2, static: During the movement of the reciprocating cover 5, the tin slag can be scraped and distributed to the forming blind hole 331 for static forming; during the forming process, the exhaust pipe 63 is opened to discharge the smoke and dust therein to the bag filter; after there is no smoke and dust in the reciprocating cover 5, the vent 52 is opened to accelerate the cooling and forming;

[0072] S3, discharging of the right smelting furnace: after the tin concentrate is smelted in the right smelting furnace 1, the dust collecting hood 7 of the right smelting furnace 1 is covered on the sedimentation tank 32 of the right smelting furnace 1, and the gas collecting branch pipe 611 on the side of the right smelting furnace 1 is connected to the ventilation pipe 71; after the fluid of the right smelting furnace 1 is discharged into the corresponding sedimentation tank 32 and left to stand, the overflow port 321 is opened, and the tin slag on the upper layer of the corresponding sedimentation tank 32 flows into the static forming tank 33, and the refined tin liquid on the lower layer is transported to other processes through the bottom outlet; the reciprocating cover 5 is moved to the right and covered on the right part of the static forming tank 33, and the ventilation pipe 55 is connected to the gas collecting branch pipe 613, and the discharging is fully closed to avoid spillover and pollution of the environment;

[0073] S4, standing still: during the movement of the reciprocating cover 5, the tin slag can be scraped and distributed to the forming blind hole 331 for standing still forming; during the forming process, the exhaust pipe 63 is opened to discharge the smoke and dust therein to the bag filter; after there is no smoke and dust in the reciprocating cover 5, the vent 52 is opened to accelerate the cooling and forming;

[0074] S5, demoulding: all the tin slag molding ingots 34 formed in the static molding pool 33 are lifted out of the mold through the molding blind holes 331 through the handle bars 341. Fig.11 As shown;

[0075] S6, recycling: the tin slag is crushed after being formed, and returned to the smelting furnace 1 together with the collected smoke through the tin concentrate transfer mechanism 29 for recycling.

[0076] The tin concentrate recyclable smelting system of this embodiment realizes the separation of tin slag and tin liquid in the smelting electric furnace 1 on both sides of the static forming pool 3 and the forming of the tin slag in the static forming pool 3 through the reciprocating movable cover 5 on the static forming pool 3, and the ventilation pipe 55 is alternately connected with the gas collecting branch pipe 2 612 and the gas collecting branch pipe 3 613.

[0077] Example 5

[0078] The tin concentrate recyclable smelting system of this embodiment has the same basic structure as that of embodiment 4, except that: Figure 5 As shown, the rolling rail member 223 includes a connecting shaft 2232 connecting two opposite frame plates of the guide frame 221 in the guide frame 221, and a rotating wheel 2231 sleeved on both ends of the connecting shaft 2232, which converts sliding into rolling, saving time and effort. The rolling rail members 23 are an even number and are symmetrically distributed in the guide frame 21; the left and right side walls of the reciprocating cover 5 are provided with vents 52, which are opened and closed by a sliding door 53 provided in cooperation. After the smoke and dust treatment is completed, the cold air is inhaled to accelerate the forming of the tin slag into the tin slag forming ingot; as shown in FIG. Fig. 9 As shown, the bottom of the slider 4455 is rotatably connected to a roller 56, which converts sliding into rolling, saving time and effort; Fig.10 As shown, the bottom of the dust collecting cover 7 is symmetrically fixed with an elastic mechanism 72, so that there is a certain margin when the ventilation pipe at the top is connected with the gas collecting branch pipe, thereby improving the versatility of the dust collecting cover. The central section of the rotating wheel 2231 is stepped and the cross section is T-shaped. The step, i.e., the T-head, is stuck on the side of the supporting guide column 2213, and while rolling, it plays a guiding role to prevent the electrode rod 26 from deviating from the mounting hole during installation or removal.

[0079] The present invention and its embodiments are described schematically above, and the description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by it and designs a structural method and an embodiment similar to the technical solution without creativity without departing from the purpose of the invention, they shall all fall within the protection scope of the present invention.

Claims

1. A tin concentrate recyclable smelting system, characterized by: It comprises a smelting electric furnace (1), an electrode rod synchronous replacement device (2) on the top of the smelting electric furnace (1), and a tin liquid treatment device (3) after smelting and discharging of the smelting electric furnace (1), wherein: The tin liquid treatment device (3) comprises a sedimentation tank (32) and a static forming tank (33); the sedimentation tank (32) is arranged at the bottom of the discharge port of the smelting electric furnace (1); an overflow port (321) is opened at the top of the sedimentation tank (32) and connected to the static forming tank (33); the tin slag on the upper layer of the sedimentation tank (32) flows into the static forming tank (33) through its overflow port (321), and the refined tin liquid on the lower layer is transported to the next process through its bottom outlet; The electrode rod synchronous replacement device (2) comprises a support platform (25) and a tin concentrate transfer mechanism (29) and an electrode rod lifting mechanism (20) fixed on the support platform (25). After the furnace body of the smelting electric furnace (1) passes through the support platform (25), its furnace top protrudes from the support platform (25); the electrode rod lifting mechanism (20) is symmetrically arranged vertically around the furnace top; the furnace top surrounding the middle opening of the furnace top is also provided with symmetrically distributed electrode rod insertion openings; the feed end of the tin concentrate transfer mechanism (29) is transversely fixed to the support platform (25) through its bracket (291), and the discharge opening (292) of the discharge end is sealedly connected to the middle opening of the furnace top; the electrode rod lifting mechanism (20) inserts the electrode rod (26) into the electrode rod insertion opening of the furnace top; The tin slag in the static forming pool (33) is formed and crushed, and then returned to the smelting electric furnace (1) through the tin concentrate transfer mechanism (29) for recycling; The invention also comprises a waste gas and waste dust treatment device (4), the waste gas and waste dust treatment device (4) comprising a reciprocating hood (5), an exhaust mechanism and a dust collecting hood (7) covering the top of the sedimentation tank (32); the reciprocating hood (5) covers the top of the static forming tank (33), and the top of the reciprocating hood (5) is connected to and fixed with a ventilation pipe (55); the exhaust mechanism is transversely fixed between the two smelting electric furnaces (1), and comprises a transverse gas collecting main pipe (61) and an exhaust pipe (63), and the gas collecting main pipe (61) is connected to the ventilation pipe (55) and the exhaust pipe (63); the top of the dust collecting hood (7) is externally connected to a ventilation pipe (71), and the exhaust mechanism discharges smoke and dust to a bag dust removal device or a desulfurization device.

2. The tin concentrate recyclable smelting system according to claim 1, characterized in that: The sedimentation tanks (32) correspond to the smelting electric furnaces (1) one by one. The sedimentation tanks (32) are arranged in pairs and symmetrically on both sides of the static forming tank (33). The bottom of the static forming tank (33) is provided with a plurality of forming blind holes (331) for forming tin slag forming ingots (34). The electrode rod synchronous replacement device (2) further comprises a tin concentrate lifting mechanism (28), the bottom feed port of the tin concentrate lifting mechanism (28) being in communication with the tin concentrate temporary storage bin, and the upper discharge port being in communication with the feed end of the tin concentrate transfer mechanism (29); the electrode rod lifting mechanisms (20) are three in number, arranged in the shape of a finished product around the furnace top; the electrode rod lifting mechanisms (20) comprise a vertical fixing frame (21), a lifting arm (22), a winch (23) and a pulley mechanism (24); the electrode rod lifting mechanisms (20) are fixed to a support platform (25) via their vertical fixing frames (21).

3. The tin concentrate recyclable smelting system according to claim 2, characterized in that: The molded blind hole (331) is in the shape of a frustum or cone, and has a handle bar (341) pre-installed therein; The vertical fixing frame (21) comprises a vertical support column (212) and a supporting guide column (213) inside the support column (212), and also comprises a lifting arm (211) laterally fixedly connected to the top of the support column (212) and the supporting guide column (213); the support column (212) and the supporting guide column (213) are both fixedly connected to the support platform (25); One end of the lifting arm (22) is fixedly connected to a guide frame (221) which is sleeved and slidably connected to a support guide column (213), and the other end is fixedly connected to an electrode rod fixing piece (222); The pulley mechanism (24) comprises a fixed pulley 1 (241), a fixed pulley 2 (242) and a fixed pulley 3 (243) arranged in sequence and fixed on the upper surface of the lifting arm (211), and a fixed pulley 4 (244) arranged in parallel with the fixed pulley 3 (243), and also comprises a movable pulley 1 (246) fixed to the upper surface of the lifting arm (22); the lifting arm (211) near the pulley 2 (242) and the fixed pulley 3 (243) is respectively perforated with a through hole 1 (2111) and a through hole 2 (2112); The winch (23) is fixed to the lower outer side of the support (212), and the free end of the traction rope (231) is passed through the fixed pulley 1 (241), the fixed pulley 4 (244), downward through the through hole 2 (2112), then passed through the movable pulley 1 (246), upward through the through hole 2 (2112), then passed through the fixed pulley 3 (243), the fixed pulley 2 (242), and then passed through the through hole 1 (2111) downward, and then fixedly connected to the guide frame (221).

4. The tin concentrate recyclable smelting system according to claim 3, characterized in that: The pulley mechanism (24) further includes a fixed pulley five (245) near the second through hole (2112) and a movable pulley two (247) juxtaposed with the movable pulley one (246) on the upper surface of the lifting arm (22). The fixed pulley five (245) and the fixed pulley three (243) are respectively arranged on both sides of the second through hole (2112); the free end of the traction rope (231) successively bypasses the fixed pulley one (241), the fixed pulley four (244), passes downward through the second through hole (2112), then bypasses the movable pulley one (246), passes upward through the second through hole (2112), then bypasses the fixed pulley five (245), passes downward through the second through hole (2112), bypasses the movable pulley two (247), passes upward through the second through hole (2112), then bypasses the fixed pulley three (243), the fixed pulley two (242), and then passes downward through the first through hole (2111) and is fixedly connected to the guide frame (221).

5. The tin concentrate recyclable smelting system according to claim 4, characterized in that: The longitudinal cross-section of the handle rod (341) is in the shape of "plus"; the forming blind holes (331) are of the same size and are evenly distributed in the static forming pool (33); the wheel directions of the fixed pulley five (245) and the fixed pulley three (243) are perpendicular to each other.

6. The tin concentrate recyclable smelting system according to claim 4, characterized in that: The handle rod (341) is a tripod; the electrode rod fixing member (222) is a single-slit or double-slit split sleeve; a sealing ring (224) is fixedly connected to the bottom end surface of the split sleeve.

7. The tin concentrate recyclable smelting system according to claim 5, characterized in that: Above the inner side of the sedimentation tank (32), respectively near both ends of the gas collecting main pipe (61), the gas collecting main pipe (61) is provided with a first gas collecting branch pipe (611); the exhaust pipe (63) is connected to the middle of the gas collecting main pipe (61), and a second gas collecting branch pipe (612) and a third gas collecting branch pipe (613) are respectively provided between each first gas collecting branch pipe (611) and the exhaust pipe (63).

8. The tin concentrate recyclable smelting system according to claim 7, characterized in that: Sliders (51) are fixed on the front and rear side walls of the reciprocating movable cover (5). The bottom of the reciprocating movable cover (5) sinks into the bottom of the static forming pool (33) and is close to the forming blind holes (331); guide rails (332) are fixed on the edge of the static forming pool (33) and are arranged in cooperation with the sliders (51). A rolling rail member (223) that is in rolling connection with the support guide post (213) is fixed inside the guide frame (221).

9. The tin concentrate recyclable smelting system according to claim 8, characterized in that: The rolling rail member (223) includes a connecting shaft (2232) inside the guide frame (221) that connects two opposite frame plates of the guide frame (221), and runners (2231) sleeved on both ends of the connecting shaft (2232); ventilation openings (52) are provided on the left and right side walls of the reciprocating movable cover (5), and the ventilation openings (52) are opened and closed by sliding doors (53) arranged in cooperation; the bottom of the slider (51) is rotatably connected with rollers (56); elastic mechanisms (72) are symmetrically fixed at the bottom of the dust collecting cover.

10. A processing technology for the tin concentrate recyclable smelting system according to claim 8, characterized in that: The steps are as follows: S1. Synchronous replacement of electrode rods: At the top of the smelting electric furnace (1), the electrode rods (26) are synchronously replaced through the electrode rod synchronous replacement device (2). S2, discharge: discharge the smelted fluid in the smelting electric furnace (1) into the sedimentation tank (32) and let it stand, then open the overflow port (321), the tin slag on the upper layer flows into the standing forming tank (33), and the refined tin liquid on the lower layer is transported to other processes through the bottom outlet; S3, static: the tin slag is distributed to the forming blind hole (331) and statically formed; S4, recycling: the tin slag is crushed after being formed, and is returned to the smelting furnace (1) through the tin concentrate transfer mechanism (29) for recycling; S5, exhaust: during the molding process, the exhaust pipe (63) is opened to exhaust the smoke and dust therein.

11. The processing technology of the tin concentrate recyclable smelting system according to claim 10, characterized in that: By the reciprocating cover (5) making reciprocating motion on the static forming pool (33), the ventilation pipe (55) is alternately connected with the second gas collecting branch pipe (612) and the third gas collecting branch pipe (613), so as to separate the tin slag and the tin liquid in the smelting electric furnace (1) on both sides of the static forming pool (33) and to form the tin slag in the static forming pool (33) after separation.

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