Antimony and bismuth efficient separation vacuum furnace for tin smelting

Abstract

The utility model discloses an antimony and bismuth efficient separation vacuum furnace for tin smelting, and relates to the technical field of tin smelting vacuum furnaces. Comprising a furnace body, the bottom of the furnace body is fixedly communicated with a discharging pipe, a pipe body of the discharging pipe is connected with a first material valve, the top of the furnace body is fixedly communicated with an air outlet pipe, one side of the air outlet pipe is connected with an air pump, and a pipe body of the air outlet pipe is connected with an electromagnetic valve. The melting furnace is provided with the feeding assembly, the first vortex heating coil and the condensation assembly, solid tin blocks are melted into liquid through the feeding assembly, the furnace body is vacuumized, molten tin in the liquid state is discharged into the furnace body through the push block, and the molten tin is condensed under the heating of the first vortex heating coil. The antimony and bismuth impurity metals in the uniformly flowing tin mixed solution are heated to a vaporized state, the vaporized antimony and bismuth move upwards through the steam channel, and the antimony and the bismuth are liquefied through the condensation block.

Description

TECHNICAL FIELD

[0001] The utility model relates to tin smelting vacuum furnace technical field, concretely is a kind of tin smelting antimony, bismuth efficient separation vacuum furnace. BACKGROUND

[0002] In traditional tin smelting process, often there is high-antimony crude tin containing antimony, bismuth impurities, the existence of these impurities not only affects the purity of tin, also increases the difficulty and cost of subsequent refining, therefore, how to realize the efficient separation of antimony, bismuth impurities, become the key to improve tin smelting efficiency and product quality.

[0003] Existing separation method is mostly to use chemical method or electrolytic method, but these methods often exist process complex, high energy consumption, environmental pollution and other problems, therefore, it is particularly important to develop a kind of efficient, environmentally friendly tin smelting antimony, bismuth separation technology. UTILITY MODEL CONTENT

[0004] The utility model is to provide a kind of tin smelting antimony, bismuth efficient separation vacuum furnace, to solve the problem raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of tin smelting antimony, bismuth efficient separation vacuum furnace, including furnace body, the bottom of furnace body is fixedly connected with discharge pipe, first material valve is connected on the pipe body of discharge pipe, the top of furnace body is fixedly connected with gas outlet pipe, gas outlet pipe side is connected with gas pump, and the pipe body is connected with solenoid valve;

[0006] A plurality of first uniform material hole plates are fixed in furnace body, first vacuum cavity is set up on the barrel body of furnace body, and first eddy current heating coil is fixed in first vacuum cavity;

[0007] Furnace body top is fixed with feed pipe, and feed assembly is arranged on the side of feed pipe;

[0008] Condensing assembly is arranged on the top of furnace body, and separation pipe is fixedly connected on the top of furnace body, second material valve is connected on the pipe body of separation pipe, and antimony, bismuth mixed liquid condensed into liquid is discharged from furnace body through separation pipe.

[0009] Preferably, the feed assembly includes a feed bucket fixedly connected to the feed pipe, a second vacuum cavity is formed in the barrel body of the feed bucket, a second eddy current heating coil is fixed in the second vacuum cavity, and a material hopper is fixedly connected to the barrel body of the feed bucket on the side of the second eddy current heating coil.

[0010] A hydraulic cylinder is arranged on the side of the feed bucket, the telescopic rod of the hydraulic cylinder is movably penetrated through the feed bucket, and a push block matched with the inner cavity of the feed bucket is fixed to the end of the telescopic rod.

[0011] Preferably, a second uniform material hole plate with a circular truncated cone cross section is fixed in the furnace body, and the second uniform material hole plate is located on the top of the first uniform material hole plate.

[0012] Preferably, the discharge port of the feeding pipe in the furnace body is vertically downward, and the discharge port is located directly above the second uniform material hole plate.

[0013] Preferably, the condensing assembly comprises a condensing block with a circular truncated cone cross section, a steam passage is formed in the middle of the condensing block, a cooling cavity is formed in the condensing block, refrigerant inlet pipes and refrigerant outlet pipes are respectively fixed on the two sides of the furnace body and are in communication with the cooling cavity, and a refrigeration box is connected between the refrigerant inlet pipes and the refrigerant outlet pipes.

[0014] Preferably, a heat insulation plate is fixed to the bottom of the condensing block.

[0015] Preferably, a slope is formed on the bottom of the furnace body.

[0016] Compared with the prior art, the beneficial effects of the present application are:

[0017] The tin smelting antimony and bismuth efficient separation vacuum furnace is provided with a furnace body, a gas outlet pipe and an electromagnetic valve, air and impurities in the furnace body can be effectively removed through vacuumizing, so that oxidation, metamorphism or pollution of tin ore in the heating process is prevented, the quality stability of the material is ensured, in addition, since the air in the furnace body is extracted, heat can more concentratedly act on the material, heat loss is reduced, and the heating efficiency can be significantly improved.

[0018] Meanwhile, the feeding assembly, the first vortex heating coil and the condensing assembly are arranged, solid tin blocks are melted into liquid state through the feeding assembly, the furnace body is extracted to vacuum, tin molten liquid in liquid state is discharged into the furnace body through the push block, antimony and bismuth impurity metals in the uniformly flowing tin mixed liquid are heated to vaporization state under the heating of the first vortex heating coil, the vaporized antimony and bismuth move upward through the steam passage, the antimony and bismuth are liquefied through the condensing block, after the separation is completed, the second material valve and the first material valve are opened, and the antimony and bismuth solutions and the purified tin solution are collected, respectively, the device has the advantages of simple process, low energy consumption and small environmental pollution. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a left side view of the present application;

[0020] Figure 2 It is a sectional view of the present application;

[0021] Figure 3 It is a half sectional view of the present application.

[0022] In the diagram: 1. Furnace body; 101. Slope; 2. Discharge pipe; 3. First material valve; 4. Gas outlet pipe; 5. Solenoid valve; 6. Feed pipe; 7. Feed assembly; 701. Feed hopper; 702. Material hopper; 703. Second eddy current heating coil; 704. Hydraulic cylinder; 705. Push block; 8. First material leveling plate; 9. Second material leveling plate; 10. First eddy current heating coil; 11. Separation pipe; 12. Second material valve; 131. Condensate block; 132. Steam passage; 133. Cooling chamber; 134. Refrigerant inlet pipe; 135. Insulation plate. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] The vacuum furnace in this scheme is used in the tin smelting process to separate antimony and bismuth impurities from high-antimony crude tin containing antimony and bismuth impurities.

[0025] like Figures 1-3 As shown, this utility model provides a technical solution: a high-efficiency vacuum furnace for separating antimony and bismuth in tin smelting, including a cylindrical furnace body 1 and a controller. A discharge pipe 2 is fixedly connected to the bottom of the furnace body 1, and a first material valve 3 is connected to the pipe body of the discharge pipe 2. To facilitate the discharge of purified tin, a slope 101 is formed at the bottom of the furnace body 1. An exhaust pipe 4 is fixedly connected to the top of the furnace body 1, and an air pump is connected to one side of the exhaust pipe 4. A solenoid valve 5 is connected to the pipe body of the exhaust pipe 4. After the air pump is started, the furnace body 1 is evacuated.

[0026] It is understandable that vacuuming can effectively remove air and impurities from the furnace body 1, thereby preventing the tin ore from oxidizing, deteriorating or becoming contaminated during the heating process, ensuring the stability of the material quality. In addition, since the air in the furnace body 1 is extracted, the heat can be applied to the material more concentratedly, reducing heat loss and significantly improving heating efficiency.

[0027] Several vertically distributed first uniform material perforated plates 8 made of heat-conducting material are fixed inside the furnace body 1. A first vacuum chamber is opened on the barrel of the furnace body 1. A first eddy current heating coil 10 is fixed inside the first vacuum chamber. The arrangement of the first uniform material perforated plates 8 enables the material heated into liquid to be uniformly discharged through the discharge holes of the first uniform material perforated plates 8, thereby improving the gasification efficiency of antimony and bismuth impurities, and improving the purification efficiency and purification effect.

[0028] In order to further improve the purification efficiency and effect, the second uniform hole plate 9 with a circular truncated cone cross section is fixed in the furnace body 1, the second uniform hole plate 9 is located at the top of the first uniform hole plate 8 and vertically downward from the discharge port of the feeding pipe 6 in the furnace body 1, and the discharge port is located directly above the second uniform hole plate 9, so that the liquid tin mixed liquid can uniformly fall to the first uniform hole plate 8 through the discharge hole of the second uniform hole plate 9, thereby further improving the purification efficiency and effect.

[0029] The feeding pipe 6 is fixed at the top of the furnace body 1, and the feeding pipe 6 is provided with a feeding assembly 7 on one side.

[0030] As shown in Figure 2 , the feeding assembly 7 comprises a feeding barrel 701 fixedly communicated with the feeding pipe 6, a second vacuum cavity is formed in the barrel body of the feeding barrel 701, a second vortex heating coil 703 is fixed in the second vacuum cavity, a material hopper 702 is fixedly communicated with the barrel body of the feeding barrel 701 on the side of the second vortex heating coil 703, a hydraulic cylinder 704 is arranged on one side of the feeding barrel 701, the telescopic rod of the hydraulic cylinder 704 is movably penetrated through the feeding barrel 701, and a push block 705 matched with the inner cavity of the feeding barrel 701 is fixed at the end of the telescopic rod.

[0031] The solid tin blocks enter the feeding barrel 701 through the material hopper 702, the material is pushed into the feeding barrel 701 at the second vortex heating coil 703 by the push block 705, and the material becomes liquid after being heated, and the liquid tin melt is discharged into the furnace body 1 through the feeding pipe 6 under the continuous pushing of the push block 705.

[0032] In order to realize the cooling and collection of antimony and bismuth, a condensing assembly is arranged at the top of the furnace body 1, a separation pipe 11 is fixedly communicated with the top of the furnace body 1, a second material valve 12 is connected to the pipe body of the separation pipe 11, and the antimony and bismuth mixed liquid condensed into liquid is discharged from the furnace body 1 through the separation pipe 11.

[0033] As shown in Figure 2 and Figure 3 , the condensing assembly comprises a condensing block 131 with a circular truncated cone cross section, a heat insulation plate 135 is fixed to the bottom of the condensing block 131, a steam passage 132 is formed in the middle of the condensing block 131, a cooling cavity 133 is formed in the condensing block 131, refrigerant inlet pipes 134 and refrigerant outlet pipes are fixed on both sides of the furnace body 1 and communicated with the cooling cavity 133, a refrigeration box is connected between the refrigerant inlet pipes 134 and the refrigerant outlet pipes, and the cooling liquid flowing in the refrigerant inlet pipes 134, the refrigerant outlet pipes and the cooling cavity 133 is preferably refrigeration oil.

[0034] It needs to know that the heating temperature of the first eddy current heating coil 10 and the second eddy current heating coil 703 is different, the tin block is heated into liquid state by the second eddy current heating coil 703, and the antimony and bismuth impurity metals in the tin mixed solution are heated to the gasification state by the first eddy current heating coil 10.

[0035] For the supplement of the scheme, the solid tin block enters into the feeding barrel 701 through the material hopper 702, the controller controls the hydraulic cylinder 704 to be elongated, the material is pushed into the feeding barrel 701 at the second eddy current heating coil 703 through the push block 705, the material is heated into liquid state through the second eddy current heating coil 703, at this time, the controller controls the air pump to be started, so that the furnace body 1 is extracted to vacuum, under the continuous pushing of the push block 705, the tin molten liquid in liquid state is discharged into the furnace body 1 through the feeding pipe 6, and passes through the second uniform material hole plate 9 and a plurality of first uniform material hole plates 8, at this time, the antimony and bismuth impurity metals in the uniformly flowing tin mixed solution are heated to the vaporization state under the heating of the first eddy current heating coil 10, the vaporized antimony and bismuth move upward through the steam passage 132, due to the low temperature at the top of the condensing block 131, so that the antimony and bismuth are liquefied, the liquefied antimony and bismuth are stored in the cavity formed by the condensing block 131 and the top inner wall of the furnace body 1, when the separation is completed, the second material valve 12 and the first material valve 3 are opened, and the antimony and bismuth solutions and the purified tin solution are collected or reprocessed.

[0036] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the attached embodiments and its equivalents.

Claims

1. A high-efficiency vacuum furnace for separating antimony and bismuth in tin smelting, comprising a furnace body (1), characterized in that: The bottom of the furnace body (1) is fixedly connected to a discharge pipe (2), and a first material valve (3) is connected to the pipe body of the discharge pipe (2). The top of the furnace body (1) is fixedly connected to an air outlet pipe (4), and an air pump is connected to one side of the air outlet pipe (4), and a solenoid valve (5) is connected to its pipe body. Several first uniform material plates (8) are fixed inside the furnace body (1), and a first vacuum chamber is opened on the barrel of the furnace body (1). A first eddy current heating coil (10) is fixed inside the first vacuum chamber. A feed pipe (6) is fixed on the top of the furnace body (1), and a feed assembly (7) is provided on one side of the feed pipe (6). A condensing assembly is provided on the top of the furnace body (1), and a separation pipe (11) is fixedly connected to the top of the furnace body (1). A second material valve (12) is connected to the pipe body of the separation pipe (11). The antimony and bismuth mixture condensed into liquid is discharged from the furnace body (1) through the separation pipe (11).

2. The high-efficiency vacuum furnace for separating antimony and bismuth in tin smelting according to claim 1, characterized in that: The feeding assembly (7) includes a feeding barrel (701) that is fixedly connected to the feeding pipe (6). A second vacuum chamber is provided on the barrel body of the feeding barrel (701). A second eddy current heating coil (703) is fixed in the second vacuum chamber. A material hopper (702) is fixedly connected to the barrel body of the feeding barrel (701) located on one side of the second eddy current heating coil (703). A hydraulic cylinder (704) is provided on one side of the feed hopper (701). The telescopic rod of the hydraulic cylinder (704) moves through the feed hopper (701), and a push block (705) that is adapted to the inner cavity of the feed hopper (701) is fixed at its end.

3. The high-efficiency vacuum furnace for separating antimony and bismuth in tin smelting according to claim 1, characterized in that: The furnace body (1) is fixed with a second material equalization plate (9) having a frustum-shaped cross section. The second material equalization plate (9) is located on top of the first material equalization plate (8).

4. The high-efficiency vacuum furnace for separating antimony and bismuth in tin smelting according to claim 3, characterized in that: The outlet of the feed pipe (6) located inside the furnace body (1) is vertically downward and its outlet is located directly above the second uniform material plate (9).

5. The high-efficiency vacuum furnace for separating antimony and bismuth in tin smelting according to claim 1, characterized in that: The condensing assembly includes a condensing block (131) with a frustum-shaped cross-section. A steam channel (132) is formed in the middle of the condensing block (131). A cooling chamber (133) is provided on the condensing block (131). A refrigerant inlet pipe (134) and a refrigerant outlet pipe, which are connected to the cooling chamber (133), are fixed on both sides of the furnace body (1). A refrigeration box is connected between the refrigerant inlet pipe (134) and the refrigerant outlet pipe.

6. The high-efficiency vacuum furnace for separating antimony and bismuth in tin smelting according to claim 5, characterized in that: A heat insulation plate (135) is fixed to the bottom of the condenser block (131).

7. The high-efficiency vacuum furnace for separating antimony and bismuth in tin smelting according to claim 1, characterized in that: The bottom of the furnace body (1) has a slope (101).

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