Solid waste salt continuous refining furnace

Abstract

The present invention provides a continuous blowing furnace for solid waste salt, comprising an outer furnace body, an inner furnace body 1 eccentrically arranged in the outer furnace body, a main chamber formed between the outer furnace body and the inner furnace body 1, an inner furnace body 2 rotatably arranged on the outer periphery of the inner furnace body 1, a plurality of isolation components spaced at intervals on the outer periphery of the inner furnace body 2, and the plurality of isolation components dividing the main chamber into a plurality of sub-chambers. The present invention is provided with an outer furnace body, an isolation component, an inner furnace body 1 eccentrically arranged with the outer furnace body, and an inner furnace body 2 rotatably matched with the inner furnace body 1. Since the isolation component separates the sub-chambers from each other, when the sub-chamber is rotated to be no longer connected to the feed port 1, the gas flow inside the sub-chamber will tend to be stable, and the waste salt metal powder will gather under the action of its own gravity. When the sub-chamber is rotated to be connected to the feed port 2, oxygen-enriched air enters the interior of the inner furnace body 1 through the feed port 2 under the action of the gas pressure difference, thereby significantly improving the blowing efficiency of the blowing furnace.

Description

Technical Field

[0001] The invention relates to the field of metallurgy, in particular to a continuous blowing furnace for solid waste salt. Background Art

[0002] Converting is a method of metal smelting and recycling. For example, Chinese patent publication CN112577314B discloses a horizontal converter for continuous copper matte converting. Powdered waste salt and oxygen-enriched air are fed into the converting furnace. The powdered waste salt is heated, converting it from a solid to a liquid state. Non-metallic components (sulfides, amides, etc.) in the waste salt transform into gases at high temperatures, while other insoluble materials form scum that floats in the converting furnace. After the gases are exhausted and the scum is removed, the remaining liquid in the converting furnace is the recoverable metal.

[0003] In order to feed the powdered waste salt material and oxygen-enriched air into the refining furnace, the existing technology usually uses a blower to continuously blow the powdered waste salt material and oxygen-enriched air into the refining furnace. However, under the action of the airflow of the blower, a large amount of powdered waste salt material and oxygen-enriched air will form turbulence in the upper area of ​​the refining furnace and cannot fall into the liquid molten pool in the lower part of the refining furnace. As a result, the liquid metal in the liquid molten pool cannot fully contact and react with the oxygen-enriched air. At the same time, the time required for melting the waste salt powder is also increased accordingly, resulting in a decrease in the refining efficiency of the refining furnace. Summary of the Invention

[0004] Based on this, it is necessary to provide a solid waste salt continuous blowing furnace to address the problems existing in the current blowing furnace, so that the oxygen-rich air entering the blowing furnace can fully contact and react with the liquid metal in the liquid molten pool. At the same time, the waste salt metal powder entering the blowing furnace can also fall into the liquid metal molten pool more quickly and be heated and melted, thereby improving the blowing efficiency of the blowing furnace.

[0005] The above purpose is achieved through the following technical solutions:

[0006] Solid waste salt continuous converting furnace, including:

[0007] outer furnace body;

[0008] An inner furnace body 1 is eccentrically arranged in the outer furnace body, and a main chamber is formed between the outer furnace body and the inner furnace body 1;

[0009] An inner furnace body 2 is rotatably arranged on the outer periphery of the inner furnace body 1, and a plurality of isolation components are evenly spaced on the outer periphery of the inner furnace body 2. The plurality of isolation components divide the main chamber into a plurality of sub-chambers. The volumes of the plurality of sub-chambers are variable, and the blown material can enter from the position where the volume of the sub-chamber is maximum and enter into the interior of the inner furnace body 1 from the position where the volume of the sub-chamber is minimum.

[0010] In one embodiment, the isolation assembly includes a fixed frame, a sliding frame and an elastic member. The sliding frame is slidably matched with the fixed frame, and the sliding frame can slide along the radial direction of the inner furnace body. The elastic member is arranged between the sliding frame and the fixed frame, and the elastic member is used to keep the sliding frame in contact with the inner wall of the outer furnace body.

[0011] In one embodiment, an inner furnace body 3 is rotatably arranged inside the inner furnace body 1, and the inner furnace body 3 is used to accommodate liquid blown material. The inner furnace body 3 includes a first part, a second part and a third part. The first part and the third part are cylindrical, the second part is an inclined grid plate, and the second part is fixedly arranged between the first part and the third part in a circumferential arrangement. A slag discharge port is provided at one end of the third part away from the second part, and the slag discharge port is used to discharge slag on the surface of the liquid blown material. When the second part rotates, it can guide the slag to move to the area where the slag discharge port is located.

[0012] In one embodiment, an exhaust mechanism is provided at one end of the third portion away from the second portion, and the exhaust mechanism is used to discharge waste gas generated during the blowing process.

[0013] In one embodiment, the exhaust mechanism includes a sealing ring and a fixed ring. The diameter of the fixed ring is smaller than the diameter of the sealing ring. The sealing ring and the fixed ring are fixedly connected. The fixed ring is fixedly set on the inner wall of the outer furnace body. The sealing ring abuts and rotates with the outer end face of the third part. The end face of the third part is provided with an air outlet groove, and an exhaust port is provided on the upper part of the sealing ring and in the area where the air outlet groove is located.

[0014] In one embodiment, a waste gas collection pipe is provided on the top of the outer furnace body, and the waste gas collection pipe is connected to a waste gas treatment system for treating the waste gas discharged from the exhaust port.

[0015] In one embodiment, a support frame is provided at the outer lower end of the outer furnace body.

[0016] In one embodiment, a power component 1 is provided outside the inner furnace body 3, and the power component 1 is used to drive the inner furnace body 3 to rotate circumferentially.

[0017] In one embodiment, a power assembly 2 is provided outside the inner furnace body 2, and the power assembly 2 is used to drive the inner furnace body 2 to rotate circumferentially.

[0018] The beneficial effects of the present invention are:

[0019] The present invention is provided with an outer furnace body, an isolation component, an inner furnace body 1 eccentrically arranged with the outer furnace body, and an inner furnace body 2 rotatably matched with the inner furnace body 1. The main chamber between the outer furnace body and the inner furnace body 1 is divided into a plurality of sub-chambers which are not connected to each other by the isolation component. When the sub-chamber is rotated to be not connected with the feed port 1, the gas flow inside the sub-chamber will tend to be stable, and the waste salt metal powder will gather under the action of its own gravity. When the sub-chamber is rotated to be connected with the feed port 2, the oxygen-enriched air enters the inner furnace body 1 through the feed port 2 under the action of the gas pressure difference, and the waste salt metal powder falls into the inner furnace body 1 through the feed port 2 under the action of its own gravity. Therefore, the oxygen-enriched air can fully contact and react with the liquid metal in the liquid molten pool, and at the same time, the waste salt metal powder can also fall into the liquid metal molten pool to be heated and melted, thereby significantly improving the blowing efficiency of the blowing furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of the solid waste salt continuous blowing furnace of the present invention;

[0021] Figure 2 This is a schematic diagram of the front view of the continuous blowing furnace for solid waste salt according to the present invention;

[0022] Figure 3 for Figure 2 AA cross-sectional view structural diagram;

[0023] Figure 4 for Figure 3 A magnified schematic diagram of the structure at point B in the middle;

[0024] Figure 5 It is a schematic diagram of a half-section perspective view of a continuous blowing furnace for solid waste salt according to the present invention;

[0025] Figure 6 for Figure 5 A magnified schematic diagram of the structure at point C in the middle;

[0026] Figure 7 This is a schematic structural diagram of the inner furnace body three in the continuous blowing furnace for solid waste salt of the present invention.

[0027] in:

[0028] 100, outer furnace body; 110, main chamber; 120, feed port 1; 200, inner furnace body 1; 210, feed port 2; 300, inner furnace body 2; 400, isolation component; 410, fixed frame; 420, sliding frame; 430, elastic member; 500, inner furnace body 3; 510, first part; 520, second part; 530, third part; 531, slag discharge port; 532, air outlet groove; 600, exhaust mechanism; 610, sealing ring; 611, exhaust port; 620, fixed ring; 700, exhaust gas collection pipe; 800, support frame; 900, power component 1; 910, gear ring 1; 920, motor 1; 1000, power component 2; 1010, gear ring 2; 1020, motor 2. Implementation Method

[0029] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0030] The serial numbers assigned to components herein, such as "first," "second," etc., are used solely to distinguish the objects being described and do not convey any sequential or technical meaning. References to "connection" and "coupling" herein, unless otherwise specified, include both direct and indirect connections (couplings). In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like, indicating positions or relationships, are based on those shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They are not intended to indicate or imply that the device or element referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present invention.

[0031] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0032] like Figure 1-Figure 7As shown, the solid waste salt continuous refining furnace includes an outer furnace body 100, an inner furnace body 200 is eccentrically arranged inside the outer furnace body 100, a main chamber 110 is formed between the outer furnace body 100 and the inner furnace body 1 200, an inner furnace body 2 300 is rotatably arranged on the periphery of the inner furnace body 1 200, and a plurality of isolation components 400 are equidistantly arranged on the periphery of the inner furnace body 2 300, when the inner furnace body 2 300 rotates, the isolation components 400 can rotate synchronously with the inner furnace body 2 300, and the plurality of isolation components 400 divide the main chamber 110 into a plurality of sub-chambers, and since the inner furnace body 200 is eccentrically arranged inside the outer furnace body 100, the isolation components 400 will cause the volume of the sub-chamber to change during the rotation of the inner furnace body 2 300. The outer furnace body 100 is provided with a first feed port 120, positioned so that each subchamber's volume is maximized when connected to it. The inner furnace body 200 is provided with a second feed port 210, positioned so that each subchamber's volume is minimized when connected to it. A blower (not shown) blows oxygen-enriched air and powdered waste salt material through the first feed port 120 into the connected subchambers. Because the isolation assembly 400 separates the subchambers, when a subchamber is rotated so that it is no longer connected to the first feed port 120, the gas flow within the subchamber stabilizes, and the waste salt metal powder accumulates under its own gravity. When the subchamber is connected to the second feed port 210, the air and powdered material within the subchamber can enter the inner furnace body 200 through the second feed port 210.

[0033] Preferably, the inner furnace body 200 is eccentrically arranged near the upper part of the outer furnace body 100, so that the feed port 210 is located at the upper part of the inner furnace body 200, so that when the sub-chamber is connected to the feed port 210, the waste salt metal powder can enter the inner furnace body 200 through the feed port 210 under the action of its own gravity.

[0034] When in use, start the blower, and under the guidance of the airflow of the blower, the oxygen-enriched air and the powdered waste salt material enter the sub-chamber connected to it from the feed port 120. As the inner furnace body 2 300 rotates slowly clockwise, the volume of the sub-chamber gradually decreases, and the gas pressure inside the sub-chamber gradually increases. When the sub-chamber rotates with the inner furnace body 2 300 to be connected to the feed port 2 210, the gas pressure inside the sub-chamber is greater than the gas pressure inside the inner furnace body 1 200 at this time, so the oxygen-enriched air enters the feed port 120 from the feed port 120. The feed port 210 enters the interior of the inner furnace body 200. In addition, since the feed port 210 is opened at the upper part of the inner furnace body 200, when the sub-chamber is rotated to be connected to the feed port 210, the waste salt metal powder inside it can enter the interior of the inner furnace body 200 from the feed port 210 under the action of gravity, so that the oxygen-rich air can fully contact and react with the liquid metal in the liquid molten pool. At the same time, the waste salt metal powder can also fall into the liquid metal molten pool and be heated and melted, thereby significantly improving the blowing efficiency of the blowing furnace.

[0035] It can be understood that adding materials into the sub-chamber at the maximum volume position of the sub-chamber can enable the sub-chamber to accommodate more oxygen-rich gas and powdered waste salt materials; at the minimum volume position of the sub-chamber, the gas pressure value inside the sub-chamber reaches the maximum value, so that the oxygen-rich air inside the sub-chamber can quickly enter the inner furnace body 200 through the feed port 210.

[0036] In a further embodiment, Figure 3 and Figure 4 As shown, the isolation assembly 400 includes a fixed frame 410, a sliding frame 420 and an elastic member 430. The fixed frame 410 is arranged on the outer peripheral wall of the inner furnace body 300 and extends outward along the radial direction of the inner furnace body 300. The sliding frame 420 slides with the fixed frame 410. The sliding frame 420 can slide along the radial direction of the inner furnace body 300. The elastic member 430 is arranged between the sliding frame 420 and the fixed frame 410. The elastic member 430 is used to make the sliding frame 420 and the inner wall of the outer furnace body 100 Maintaining contact, as the fixed frame 410 rotates synchronously with the inner furnace body 2 300, the sliding frame 420 rotates synchronously with the fixed frame 410, and under the elastic action of the elastic member 430, the sliding frame 420 can always maintain contact with the inner wall of the outer furnace body 100, thereby preventing gas exchange between the two adjacent sub-chambers. Therefore, when a sub-chamber rotates to a point where it is no longer connected to the feed port 120, the airflow within the sub-chamber will tend to stabilize, and the waste salt metal powder will also gather under its own gravity. In other embodiments, the isolation assembly 400 can also be replaced by an elastic plate that can be compressed and deformed along its own axis, or an airbag that can be compressed and deformed along its own axis, which can also prevent the sub-chambers from being connected to each other.

[0037] In a further embodiment, Figure 3 、 Figure 5 and Figure 7 As shown, an inner furnace body 3 500 is rotatably provided in the inner furnace body 1 200 , and the inner furnace body 1 200 is connected to the inner furnace body 3 500 . The inner furnace body 3 500 is used to accommodate liquid blowing materials. The purpose of the rotation of the inner furnace body 3 500 is to accelerate the mixing of the liquid metal, oxygen-enriched air and waste salt metal powder stored in the inner furnace body 3 500 .

[0038] In a further embodiment, Figure 3 、 Figure 5 and Figure 7 As shown, the inner furnace body 500 comprises a first portion 510, a second portion 520, and a third portion 530. The first and third portions 510 and 530 are cylindrical. The second portion 520 comprises inclined grid plates. The second portion 520 is circumferentially arranged and fixedly disposed between the first and third portions 510 and 530. A slag discharge port 531 is provided at one end of the third portion 530, distal from the second portion 520. The slag discharge port 531 is used to discharge slag from the surface of the liquid blown material. The inclined grid plates in the second portion 520, when rotated, guide the liquid metal toward the slag discharge port 531 through the inclined surface of the inclined grid plates. As a result, slag floating on the surface of the liquid metal is also attracted to the area where the slag discharge port 531 is located by the liquid flow, and then discharged outward through the slag discharge port 531. The circumferential arrangement of the inclined grid plates in the second portion 520 also facilitates the entry of waste salt powder and oxygen-enriched air into the second portion 520.

[0039] In a further embodiment, Figure 5 and Figure 6 As shown, an exhaust mechanism 600 is rotatably provided at one end of the third part 530 away from the second part 520. The exhaust mechanism 600 is used to discharge the exhaust gas generated during the blowing process out of the inner furnace body 500. The exhaust mechanism 600 includes a sealing ring 610 and a fixed ring 620. The diameter of the fixed ring 620 is smaller than the diameter of the sealing ring 610. The sealing ring 610 and the fixed ring 620 are fixedly connected. The fixed ring 620 is fixedly provided on the inner wall of the outer furnace body 100. The sealing ring 610 abuts and rotates with the outer end face of the third part 530. An air outlet groove 532 is provided on the end face of the third part 530. An exhaust port 611 is provided on the upper part of the sealing ring 610 and in the area where the air outlet groove 532 is located. After the waste salt metal powder melts, the waste gases such as sulfides and amides contained in the waste salt separate from the liquid metal inside the molten pool and escape into the upper half of the inner furnace body three 500. Since the gas pressure outside the exhaust port 611 is lower than the gas pressure inside the inner furnace body three 500, the waste gas can be discharged to the outside of the inner furnace body three 500 through the exhaust port 611 opened on the sealing ring 610.

[0040] In one embodiment, Figure 5and Figure 6 As shown, a waste gas collecting pipe 700 is provided at the top of the outer furnace body 100. The waste gas discharged from the exhaust port 611 can enter the waste gas collecting pipe 700 from the external area of ​​the inner furnace body 500 under the guidance of the negative pressure fan. The waste gas collecting pipe 700 is connected to the waste gas treatment system, thereby sending the waste gas to the waste gas treatment system for treatment.

[0041] In one embodiment, Figure 5 As shown, a power assembly 900 is provided on the outside of the inner furnace body 3 500. The power assembly 900 is used to drive the inner furnace body 3 500 to rotate circumferentially. The power assembly 900 includes a gear ring 910 and a motor 920. The gear ring 910 is provided on the outer periphery of the first part 510. The output shaft of the motor 920 is connected to a gear meshing with the gear ring 910, so that the inner furnace body 3 500 can be forced to rotate under the driving action of the motor 920.

[0042] In one embodiment, Figure 5 As shown, a power assembly 2 1000 is provided on the outside of the inner furnace body 2 300. The power assembly 2 1000 is used to drive the inner furnace body 2 300 to rotate circumferentially. The power assembly 2 1000 includes a gear ring 2 1010 and a motor 2 1020. The gear ring 2 1010 is provided on the outer periphery of the inner furnace body 2 300. The output shaft of the motor 2 1020 is connected with a gear meshing with the gear ring 2 1010, so that the inner furnace body 2 300 can rotate under the driving action of the motor 2 1020.

[0043] In one embodiment, Figure 1 As shown, a support frame 800 is provided at the outer lower end of the outer furnace body 100 , and the support frame 800 is used to support the outer furnace body 100 and the power assembly 1 900 and the power assembly 2 1000 .

[0044] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0045] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A continuous blowing furnace for solid waste salt, characterized in that: include: outer furnace body; An inner furnace body 1 is eccentrically arranged in the outer furnace body, and a main chamber is formed between the outer furnace body and the inner furnace body 1; An inner furnace body 2 is rotatably arranged on the outer periphery of the inner furnace body 1, and a plurality of isolation components are equidistantly arranged on the outer periphery of the inner furnace body 2. The plurality of isolation components divide the main chamber into a plurality of sub-chambers. The volumes of the plurality of sub-chambers are variable, and the blown material can enter the sub-chamber when the volume of the sub-chamber is maximum and enter the interior of the inner furnace body 1 when the volume of the sub-chamber is minimum; the isolation component includes a fixed frame, a sliding frame and an elastic member, the fixed frame is arranged on the outer peripheral wall of the inner furnace body 2, the sliding frame is slidably matched with the fixed frame, the sliding frame can slide along the radial direction of the inner furnace body 2, the elastic member is arranged between the sliding frame and the fixed frame, and the elastic member is used to keep the sliding frame in contact with the inner wall of the outer furnace body.

2. The solid waste salt continuous blowing furnace according to claim 1, characterized in that: The inner furnace body 3 is rotatably arranged inside the inner furnace body 1, the inner furnace body 1 is connected to the inner furnace body 3, and the inner furnace body 3 is used to accommodate liquid blowing materials.

3. The solid waste salt continuous blowing furnace according to claim 2, characterized in that: The inner furnace body three includes a first part, a second part and a third part. The first part and the third part are cylindrical. The second part is an inclined grid plate. The second part is fixedly arranged between the first part and the third part in a circumferential arrangement. A slag discharge port is provided at one end of the third part away from the second part. The slag discharge port is used to discharge slag on the surface of the liquid blown material. When the inner furnace body three rotates, the second part can guide the slag to move to the area where the slag discharge port is located.

4. The solid waste salt continuous blowing furnace according to claim 3, characterized in that: An exhaust mechanism is provided at one end of the third part away from the second part, and the exhaust mechanism is used to discharge waste gas generated during the blowing process.

5. The solid waste salt continuous blowing furnace according to claim 4, characterized in that: The exhaust mechanism includes a sealing ring and a fixed ring. The diameter of the fixed ring is smaller than that of the sealing ring. The sealing ring and the fixed ring are fixedly connected. The fixed ring is fixedly set on the inner wall of the outer furnace body. The sealing ring abuts and rotates with the outer end face of the third part. The end face of the third part is provided with an air outlet groove. An exhaust port is provided on the upper part of the sealing ring and in the area where the air outlet groove is located.

6. The solid waste salt continuous blowing furnace according to claim 5, characterized in that: A waste gas collecting pipe is provided on the top of the outer furnace body, and the waste gas collecting pipe is connected to the waste gas treatment system for treating the waste gas discharged from the exhaust port.

7. The solid waste salt continuous blowing furnace according to claim 6, characterized in that: A support frame is provided at the outer lower end of the outer furnace body.

8. The solid waste salt continuous blowing furnace according to claim 2, characterized in that: A power component 1 is provided outside the inner furnace body 3, and the power component 1 is used to drive the inner furnace body 3 to rotate circumferentially.

9. The solid waste salt continuous blowing furnace according to claim 1, characterized in that: A power assembly 2 is provided outside the inner furnace body 2, and the power assembly 2 is used to drive the inner furnace body 2 to rotate circumferentially.

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