Side-blowing smelting and electrothermal reduction integrated furnace

Abstract

The utility model relates to a side-blowing smelting and electrothermal reduction integrated furnace, which comprises a first furnace body, a second furnace body and a second furnace body, an electrothermal cavity is defined by the first furnace body, the first furnace body is provided with an electrode device extending into the electrothermal cavity, and the first furnace body is provided with a first feeding pipe and a first flue gas discharge port which are communicated with the electrothermal cavity; a side blowing cavity is defined by the second furnace body, the second furnace body is provided with a side blowing tuyere communicated with the side blowing cavity, a second feeding pipe and a second smoke discharging opening, oxygen or oxygen-enriched air or fuel is blown into the side blowing cavity from the side blowing tuyere so as to heat materials in the side blowing cavity, the first furnace body is connected with the second furnace body, and the second furnace body is connected with the second furnace body. The electric heating cavity is communicated with the side blowing cavity, at least one of the first furnace body and the second furnace body is provided with a slag outlet, and at least one of the first furnace body and the second furnace body is provided with a discharging port. Therefore, the side-blowing smelting and electrothermal reduction integrated furnace has the advantages of being capable of saving energy, wide in application range and capable of reducing loss of valuable metal.

Description

Technical Field

[0001] The utility model relates to the technical field of metallurgical equipment, in particular to a side-blowing smelting and electric-heat reduction integrated furnace. Background Art

[0002] The pyrometallurgical zinc smelting thermoelectric furnace is generally a vertical structure with a circular or rectangular top view. Several working electrodes are installed on the top cover. The main defect of the vertical electric furnace is that the pressure-bearing capacity of the top cover is insufficient, which makes it easy to cause top impact accidents. Utility Model Content

[0003] The utility model aims to solve one of the technical problems in the related art at least to a certain extent. To this end, the embodiment of the utility model provides a side-blowing smelting and electric-heat reduction integrated furnace.

[0004] The side-blowing smelting and electric heat reduction integrated furnace of the embodiment of the utility model comprises:

[0005] a first furnace body, wherein the first furnace body defines an electric heating cavity, the first furnace body is provided with an electrode device extending into the electric heating cavity, the electrode device is used to heat the material in the electric heating cavity, and the first furnace body is provided with a first feeding pipe and a first smoke exhaust port communicating with the electric heating cavity;

[0006] The second furnace body defines a side blowing chamber, and the second furnace body is provided with a side blowing air port connected to the side blowing chamber, a second feeding pipe and a second smoke exhaust port, and oxygen or oxygen-enriched air or fuel is blown into the side blowing chamber from the side blowing air port to heat the material in the side blowing chamber, wherein the first furnace body is connected to the second furnace body, the electric heating chamber is connected to the side blowing chamber, at least one of the first furnace body and the second furnace body is provided with a slag outlet, and at least one of the first furnace body and the second furnace body is provided with a material outlet.

[0007] Therefore, the side-blowing smelting and electric heat reduction integrated furnace according to the embodiment of the utility model has the advantages of saving energy, wide application range and reducing the loss of valuable metals.

[0008] In some embodiments, a support member is provided on the circumference of the second furnace body, and the support member is connected to the outer side surface of the second furnace body so as to support the second furnace body;

[0009] The lower part of the electric heating chamber is communicated with the lower part of the side blowing chamber.

[0010] In some embodiments, each of the first furnace body and the second furnace body includes a shell located on the outside and a refractory material layer located on the inside;

[0011] The upper portion of the first end of the electrothermal chamber in the length direction is separated from the upper portion of the third end of the side-blowing chamber in the length direction by a partition wall;

[0012] The lower portion of the first end of the electric heating chamber in the length direction is communicated with the lower portion of the third end of the side blowing chamber in the length direction.

[0013] In some embodiments, the length directions of the electric heating chamber and the side blowing chamber are both in the first direction, the end of the electric heating chamber adjacent to the side blowing chamber in the first direction is the first end, the end of the electric heating chamber away from the side blowing chamber in the first direction is the second end, the end of the side blowing chamber adjacent to the electric heating chamber in the first direction is the third end, and the end of the side blowing chamber away from the electric heating chamber in the first direction is the fourth end;

[0014] On a cross section perpendicular to the first direction, the outer peripheral contour of the projection of the electrothermal cavity is a circle;

[0015] The second furnace body is provided with a plurality of side blowing vents on at least one side in the second direction, and any two of the first direction, the second direction and the up-down direction are perpendicular to each other;

[0016] The thickness direction of the partition wall is the first direction.

[0017] In some embodiments, the first smoke exhaust port is opened at the upper portion of the second end of the electrothermal chamber;

[0018] The first furnace body is provided with a first exhaust port, a second exhaust port and a third exhaust port on at least one side in the second direction, and the first exhaust port, the second exhaust port and the third exhaust port are arranged in sequence from top to bottom;

[0019] There are a plurality of the electrode devices and a plurality of the first feeding pipes, and the plurality of the electrode devices and the plurality of the first feeding pipes are alternately arranged in sequence on the top of the first furnace body in the first direction;

[0020] The second furnace body is provided with a plurality of side blowing vents spaced apart in the first direction on both sides of the second direction;

[0021] The partition wall is a water-cooled partition wall;

[0022] The distance between two adjacent ones of the plurality of side blowing vents of the second furnace body on one side of the second direction in the first direction is greater than or equal to 0.6 m and less than or equal to 1 m;

[0023] The distance between the side blowing port on one side of the second furnace body in the second direction and the side blowing port on the other side in the second direction is greater than or equal to 2 meters and less than or equal to 3.5 meters;

[0024] The ratio of the height dimension to the width dimension of the side blowing cavity is greater than or equal to 1.4 and less than or equal to 1.8.

[0025] In some embodiments, the bottom surface of the side-blowing chamber is located above the bottom surface of the electric-heating chamber, or the bottom surface of the side-blowing chamber is coplanar with the bottom surface of the electric-heating chamber;

[0026] The size of the side blowing chamber in the up-down direction is greater than or equal to the size of the electric heating chamber in the up-down direction;

[0027] There are multiple second feeding pipes, and the multiple second feeding pipes are located above the second furnace body. The smoke exhaust port is located above the second furnace body.

[0028] In some embodiments, on a cross section perpendicular to the first direction, a projection of the side blowing chamber includes a first portion, a second portion and a third portion from bottom to top, and the first portion, the second portion and the third portion form an oblong structure;

[0029] The outer contour of the first part is a semicircle, the center position of the first part is located at the upper edge of the outer contour of the first part, the center position of the first part is the same as the center position of the projection of the electrothermal cavity on the cross section perpendicular to the first direction, and the diameter size of the first part is the same as the diameter size of the projection of the electrothermal cavity on the cross section perpendicular to the first direction, so that the bottom surface of the side-blowing cavity is coplanar with the bottom surface of the electrothermal cavity;

[0030] The outer periphery of the second portion is a rectangle, and the size of the second portion in the second direction is the same as the diameter of the projection of the electrothermal cavity on a cross section perpendicular to the first direction;

[0031] The outer contour of the third part is semicircular, the center of the third part is located at the lower edge of the outer contour of the third part, and the diameter of the third part is the same as the diameter of the projection of the electrothermal cavity on the cross section perpendicular to the first direction;

[0032] The support member includes a plurality of columns extending in the up-down direction, the tops of the columns on both sides of the second furnace body in the second direction are connected, and the plurality of columns are sandwiched on both sides of the second furnace body in the second direction;

[0033] The fourth end of the second furnace body is provided with a fourth discharge port and a fifth discharge port, and the fourth discharge port is located above the fifth discharge port.

[0034] In some embodiments, the second furnace body comprises a furnace cylinder, wherein the furnace cylinder comprises a refractory material layer located on the inner side and a furnace cylinder shell located on the outer side;

[0035] The support member includes a support frame and a plurality of elastic members, the elastic members can be elastically deformed, one end of the elastic member is adjacent to the support frame, and the other end of the elastic member is connected to the furnace shell.

[0036] In some embodiments, the furnace shell includes a first shell plate, a second shell plate and a third shell plate, the first shell plate is located on the side of the refractory material layer of the furnace that is away from the first furnace body in the first direction, and the thickness direction of the first shell plate is the first direction, the second shell plate and the third shell plate are located on both sides of the refractory material layer of the furnace in the second direction, and the thickness direction of the second shell plate and the thickness direction of the third shell plate are both the second direction;

[0037] Each of the first shell plate, the second shell plate and the third shell plate is connected to at least one of the elastic members, and the elastic member can push each of the first shell plate, the second shell plate and the third shell plate to move along the direction of the refractory material layer adjacent to the furnace; the second furnace body includes a furnace body water jacket located above the furnace body;

[0038] The support member includes a plurality of support rods, one end of each support rod is connected to the support member, and the other end of each support rod is connected to the furnace body water jacket.

[0039] In some embodiments, the first furnace body is provided with a first cooling spray device for spraying the outer surface thereof, and / or the first furnace body is provided with a molten steel jacket for cooling the first furnace body, and a cooling fluid can be introduced into the molten steel jacket;

[0040] The outer side of the second furnace body is provided with a second cooling spray device for spraying the outer surface thereof, and / or the second furnace body is provided with a slag line water jacket and a tuyere water jacket. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a schematic diagram of a side-blowing smelting and electric-thermal reduction integrated furnace according to an embodiment of the utility model.

[0042] Figure 2 It is a side view of a side-blowing smelting and electric-thermal reduction integrated furnace according to an embodiment of the utility model.

[0043] Figure 3 It is a schematic diagram of a second furnace body according to an embodiment of the utility model.

[0044] Figure 4 It is a schematic diagram of a side-blowing smelting and electric-thermal reduction integrated furnace according to another embodiment of the utility model.

[0045] Figure 5 It is a side view of a side-blowing smelting and electric-thermal reduction integrated furnace according to another embodiment of the utility model.

[0046] Figure 6 It is a schematic diagram of a second furnace body according to another embodiment of the utility model.

[0047] Reference numerals:

[0048] 1. first furnace body, 11. electric heating chamber, 12. electrode device, 13. first feeding pipe, 14. first smoke exhaust port, 15. first exhaust port, 16. second exhaust port, 17. third exhaust port, 19. fourth furnace plate, 191. arch hole;

[0049] 2. second furnace body, 21. side blowing chamber, 211. first part, 212. second part, 213. third part, 22. side blowing air port, 23. second feeding pipe, 24. second smoke discharge port, 25. fourth discharge port, 26. fifth discharge port, 27. sixth discharge port, 28. seventh discharge port, 29. eighth discharge port;

[0050] 3. Partition wall, 31. Hearth, 311. First shell plate, 312. Second shell plate, 313. Third shell plate, 32. First furnace plate, 33. Second furnace plate, 34. Third furnace plate, 35. Slag line water jacket, 36. Tuyere water jacket;

[0051] 4. upright column, 41. support frame, 42. support rod, 43. elastic member. DETAILED DESCRIPTION

[0052] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but cannot be understood as limiting the present invention.

[0053] The following describes the side-blowing smelting and electric heat reduction integrated furnace according to the embodiment of the utility model with reference to the accompanying drawings. Figures 1 to 6 As shown, the side-blowing smelting and electric heat reduction integrated furnace according to an embodiment of the utility model includes a first furnace body 1 and a second furnace body 2.

[0054] The first furnace body 1 defines an electric heating chamber 11, and an electrode device 12 extending into the electric heating chamber 11 is provided on the first furnace body 1. The electrode device 12 is used to heat the material in the electric heating chamber 11, and the first furnace body 1 is provided with a first feeding pipe 13 and a first fume exhaust port 14 connected to the electric heating chamber 11. Specifically, materials can be added to the electric heating chamber 11 through the first feeding pipe 13, and the heat source of the first furnace body 1 is the electrode device 12. After the electrode device 12 is powered on, it can heat the material in the electric heating chamber 11, and the fume generated in the electric heating chamber 11 can be discharged from the first fume exhaust port 14. A reducing agent or a sulfiding agent is added to the electric heating chamber 11 to participate in the reduction or sulfidation reaction of the molten pool.

[0055] The second furnace body 2 defines a side blowing chamber 21, and the second furnace body 2 is provided with a side blowing port 22, a second feeding pipe 23, and a second fume exhaust port 24 connected to the side blowing chamber 21. Oxygen or oxygen-enriched air or fuel is blown into the side blowing chamber 21 from the side blowing port 22 to achieve heating of the material in the side blowing chamber 21. Specifically, materials (including self-heating materials and non-self-heating materials) can be added to the side blowing chamber 21 through the second feeding pipe 23, and the oxygen-enriched air supplied from the side blowing port 22 reacts with the self-heating materials, or the fuel supplied from the side blowing port 22 reacts with the non-self-heating materials. The fume generated in the side blowing chamber 21 can be discharged from the second fume exhaust port 24, and the prepared raw materials are added to the side blowing chamber 21 to participate in the self-heating or non-self-heating reaction of the molten pool.

[0056] The first furnace body 1 is connected to the second furnace body 2, the electric heating chamber 11 is connected to the side blowing chamber 21, at least one of the first furnace body 1 and the second furnace body 2 is provided with a slag outlet, and at least one of the first furnace body 1 and the second furnace body 2 is provided with a material outlet. In other words, the molten metal in the electric heating chamber 11 and the side blowing chamber 21 can flow to each other, the slag produced in the electric heating chamber 11 and the side blowing chamber 21 can be discharged from the slag outlet, and the molten metal in the electric heating chamber 11 and the side blowing chamber 21 can be discharged from the material outlet.

[0057] According to the embodiment of the utility model, the electric heating chamber 11 of the side-blowing smelting and electric heat reduction integrated furnace is connected with the side-blowing chamber 21, and the second furnace body 2 (side-blowing chamber 21) has good metallurgical dynamic conditions, and the slag and metal (not out of the furnace) produced by the intensified smelting process can be introduced into the first furnace body 1 (electric heating chamber 11) for electric heating depletion and sedimentation. Taking advantage of the characteristics of the electric heating chamber 11 that the molten pool is easy to replenish heat, relatively calm, and has weak stirring, a reducing agent can be added to the electric heating chamber 11. While using the reducing agent to deplete the valuable metals chemically lost in the slag, the valuable metals physically lost in the slag are efficiently precipitated, and the amount of valuable metals taken away by the discharged slag is reduced as much as possible, thereby increasing the amount of metal recovery.

[0058] The first furnace body 1 is connected to the second furnace body 2, so that the floor space is small and the height difference is small, which reduces the construction investment of the furnace body itself and the factory building. The electric heating chamber 11 is connected to the side blowing chamber 21, which reduces the operation of melt discharge and addition, and has a high production operation rate, which can reduce the consumption of operators and corresponding tools; at the same time, it eliminates the temperature drop of the melt in the chute, reduces the consumption of electric energy during separate depletion, and thus saves energy.

[0059] According to the embodiment of the utility model, the first furnace body 1 of the side-blown smelting and electric thermal reduction integrated furnace is connected to the second furnace body 2, and the first furnace body 1 and the second furnace body 2 have different smelting temperatures. The first furnace body 1 and the second furnace body 2 can be used to strengthen the smelting of materials such as sulfide ores or oxide ores of copper, lead, zinc, nickel, tin, and antimony. It can also be used for the strengthened smelting of various materials such as copper slag, nickel slag, red mud, solid waste, laterite, vanadium-titanium magnetite, electroplating sludge, secondary lead-containing miscellaneous materials (lead slag, battery lead paste, etc.), secondary zinc-containing miscellaneous materials (zinc leaching slag, steel plant ash, etc.), and secondary rare and precious miscellaneous materials (anode mud, antimony slag, etc.), and has a wide range of uses.

[0060] Therefore, the side-blowing smelting and electric heat reduction integrated furnace according to the embodiment of the utility model has the advantages of saving energy, wide application range and reducing the loss of valuable metals.

[0061] like Figures 1 to 6 As shown, in some embodiments, each of the first furnace body 1 and the second furnace body 2 includes a shell located on the outside and a refractory material layer located on the inside. For example, the refractory material layer located on the inside of the first furnace body 1 is a refractory brick. The inner wall surface of the refractory material layer in the first furnace body 1 defines at least part of the electric heating cavity 11, and the inner wall surface of the refractory material layer in the second furnace body 2 defines at least part of the side blowing cavity 21.

[0062] The upper part of the first end of the length direction of the electric heating chamber 11 is separated from the upper part of the third end of the length direction of the side blowing chamber 21 by the partition wall 3. The lower part of the first end of the length direction of the electric heating chamber 11 is connected to the lower part of the third end of the length direction of the side blowing chamber 21. Specifically, the lower part of the electric heating chamber 11 is connected to the lower part of the side blowing chamber 21. The length directions of the electric heating chamber 11 and the side blowing chamber 21 are both the first direction, and the end of the electric heating chamber 11 adjacent to the side blowing chamber 21 in the first direction is the first end, and the end of the electric heating chamber 11 away from the side blowing chamber 21 in the first direction is the second end. The end of the side blowing chamber 21 adjacent to the electric heating chamber 11 in the first direction is the third end, and the end of the side blowing chamber 21 away from the electric heating chamber 11 in the first direction is the fourth end. The first furnace body 1 and the second furnace body 2 are connected in the first direction.

[0063] Any two of the first direction, the second direction and the up-down direction are perpendicular to each other, the first direction may be the front-to-back direction, the second direction may be the left-to-right direction, and the front-to-back direction, the left-to-right direction and the up-to-down direction are indicated by arrows in the figure. For example, the length directions of the electric heating chamber 11 and the side blowing chamber 21 are both the front-to-back direction, the first furnace body 1 is located at the front side of the second furnace body 2, the rear end of the electric heating chamber 11 is the first end, and the front end of the electric heating chamber 11 is the second end. The front end of the side blowing chamber 21 is the third end, and the rear end of the side blowing chamber 21 is the fourth end.

[0064] In some embodiments, the partition wall 3 is a water-cooled partition wall, and the thickness direction of the partition wall 3 is the first direction.

[0065] like Figure 2 and Figure 5 As shown, in some embodiments, on a cross section perpendicular to the first direction, the outer peripheral contour of the projection of the electric heating cavity 11 is circular. Specifically, the first furnace body 1 is a cylindrical furnace body, and the electric heating cavity 11 is a cylindrical cavity extending along the first direction. For example, on a cross section perpendicular to the front-back direction, the outer peripheral contour of the projection of the electric heating cavity 11 is circular.

[0066] like Figure 1 and Figure 4 As shown, in some embodiments, the first smoke exhaust port 14 is opened at the upper part of the second end of the electric heating chamber 11. For example, the first smoke exhaust port 14 is opened at the upper part of the front end of the electric heating chamber 11, and the first smoke exhaust port 14 is used to discharge zinc-containing smoke.

[0067] The first furnace body 1 is provided with a first discharge port 15, a second discharge port 16 and a third discharge port 17 on at least one side in the second direction, and the first discharge port 15, the second discharge port 16 and the third discharge port 17 are arranged in sequence from top to bottom. Specifically, the first discharge port 15 is a high-position slag discharge port for discharging slag, and the first discharge port 15 is used to discharge high-position slag. The second discharge port 16 is a low-position slag discharge port or matte port, and the second discharge port 16 is used to discharge low-position slag or matte. The third discharge port 17 is located at the bottom and is used to discharge molten metal. For example, the first discharge port 15, the second discharge port 16 and the third discharge port 17 are located below the slag liquid surface.

[0068] like Figure 1 and Figure 4 As shown, there are multiple electrode devices 12 and multiple first feeding pipes 13, and the multiple electrode devices 12 and multiple first feeding pipes 13 are alternately arranged in the first direction on the top of the first furnace body 1. For example, the multiple electrode devices 12 and multiple first feeding pipes 13 are alternately arranged in the front-to-back direction on the top of the first furnace body 1.

[0069] like Figure 1 and Figure 4As shown, the second furnace body 2 is provided with a plurality of side blowing vents 22 on at least one side in the second direction. Specifically, the second furnace body 2 is provided with a plurality of side blowing vents 22 spaced apart in the first direction on both sides in the second direction. For example, the second furnace body 2 is provided with a plurality of side blowing vents 22 spaced apart in the front-rear direction on both sides in the left-right direction. The side blowing vents 22 are provided at the lower part of the second furnace body 2.

[0070] In some embodiments, the distance between two adjacent side blowing vents 22 on one side of the second direction of the second furnace body 2 in the first direction is greater than or equal to 0.6 meters and less than or equal to 1 meter. For example, the distance between two adjacent side blowing vents 22 on the left or right side of the second furnace body 2 in the front-to-back direction is 0.8 meters.

[0071] In some embodiments, the distance between the side blowing vents 22 on one side of the second furnace body 2 in the second direction and the side blowing vents 22 on the other side in the second direction is greater than or equal to 2 meters and less than or equal to 3.5 meters. For example, the distance between the side blowing vents 22 on the left side of the second furnace body 2 and the side blowing vents 22 on the right side in the left-right direction is 3 meters.

[0072] In some embodiments, the ratio of the height dimension to the width dimension of the side blowing chamber 21 is greater than or equal to 1.4 and less than or equal to 1.8. For example, the ratio of the height dimension (dimension in the vertical direction) to the width dimension (dimension in the first direction) of the side blowing chamber 21 is 1.6.

[0073] In some embodiments, a support member is provided on the circumference of the second furnace body 2, and the support member is connected to the outer side of the second furnace body 2 to support the second furnace body 2. Thus, the structural strength of the second furnace body 2 can be improved.

[0074] In some embodiments, the bottom surface of the side blowing chamber 21 is located above the bottom surface of the electric heating chamber 11, or the bottom surface of the side blowing chamber 21 is coplanar with the bottom surface of the electric heating chamber 11. In other words, the height of the bottom surface of the side blowing chamber 21 is greater than or equal to the height of the bottom surface of the electric heating chamber 11. The size of the side blowing chamber 21 in the up-down direction is greater than or equal to the size of the electric heating chamber 11 in the up-down direction.

[0075] In some embodiments, there are multiple second feeding pipes 23, and the multiple second feeding pipes 23 are located above the second furnace body 2, and the second smoke exhaust port 24 is located above the second furnace body 2. Specifically, the multiple second feeding pipes 23 are arranged at intervals in the first direction. For example, the multiple second feeding pipes 23 are arranged at intervals in the front-to-back direction.

[0076] In some embodiments, the first furnace body 1 is provided with a first cooling spray device on its outer surface for spraying, and / or the first furnace body 1 is provided with a molten steel jacket for cooling the first furnace body 1, and a cooling fluid can be passed into the molten steel jacket. In other words, the first furnace body 1 is cooled by at least one of the first cooling spray device and the molten steel jacket. For example, the molten steel jacket can be arranged at the bottom of the first furnace body 1 to protect the bottom of the first furnace body 1 from being corroded by high-temperature copper water or slag. The spray port of the first cooling spray device is located above the first furnace body 1 so as to spray the first furnace body 1. The first cooling spray device and the molten steel jacket can provide cooling and protection for the first furnace body 1.

[0077] In some embodiments, the outer side of the second furnace body 2 is provided with a second cooling spray device for spraying its outer surface, and / or, the second furnace body 2 is provided with a slag line water jacket 35 and a tuyere water jacket 36. That is, the second furnace body 2 is cooled by at least one of the second cooling spray device and the water jacket (the slag line water jacket 35 and the tuyere water jacket 36). For example, the slag line water jacket 35 is provided near the slag line of the second furnace body 2, thereby slowing down the erosion of the bricks near the slag line and extending the life of the furnace body. The tuyere water jacket 36 is provided on the peripheral side of the plurality of side blowing tuyere 22 and is used to protect the structure of the side blowing tuyere 22. The spray port of the second cooling spray device is located above the second furnace body 2 so as to spray the second furnace body 2. The second cooling spray device and the water jacket (the slag line water jacket 35 and the tuyere water jacket 36) can both provide cooling and protection for the second furnace body 2.

[0078] like Figures 1 to 3 As shown, in some embodiments, on a cross section perpendicular to the first direction, the projection of the side blowing chamber 21 includes, from bottom to top, a first portion 211, a second portion 212, and a third portion 213, and the first portion 211, the second portion 212, and the third portion 213 form an oblong structure. For example, on a cross section perpendicular to the front-back direction, the projection of the side blowing chamber 21 includes, from bottom to top, a first portion 211, a second portion 212, and a third portion 213, and the oblong structure is a combined structure with semicircles at both ends and a rectangle in the middle, and the straight sides of the rectangle and the semicircle are connected.

[0079] The outer contour of the first part 211 is semicircular, the center position of the first part 211 is located at the upper edge of the outer contour of the first part 211, and the upper edge of the outer contour of the first part 211 is a straight line. The center position of the first part 211 is the same as the center position of the projection of the electric heating chamber 11 on the cross section perpendicular to the first direction, and the diameter size (linear size) of the first part 211 is the same as the diameter size of the projection of the electric heating chamber 11 on the cross section perpendicular to the first direction, so that the bottom surface of the side blowing chamber 21 is coplanar with the bottom surface of the electric heating chamber 11. In other words, the shape of the cross section of the first part 211 of the side blowing chamber 21 is the same as the shape of the cross section of the lower part of the electric heating chamber 11, and the top surface of the refractory material layer at the bottom of the first furnace body 1 (the bottom surface of the side blowing chamber 21) is coplanar with the top surface of the refractory material layer at the bottom of the second furnace body 2 (the bottom surface of the electric heating chamber 11), so that the structure can be more stable. For example, the refractory material layer in the second furnace body 2 is composed of refractory bricks.

[0080] The outer periphery of the second portion 212 is a rectangle, and the size of the second portion 212 in the second direction is the same as the diameter of the projection of the electrothermal chamber 11 on the cross section perpendicular to the first direction. For example, the size of the second portion 212 in the left-right direction is the same as the diameter of the projection of the electrothermal chamber 11 on the cross section perpendicular to the front-back direction.

[0081] The outer contour of the third part 213 is semicircular, the center of the third part 213 is located at the lower edge of the outer contour of the third part 213, and the diameter of the third part 213 is the same as the diameter of the projection of the electric heating chamber 11 on the cross section perpendicular to the first direction.

[0082] The support member includes a plurality of columns 4, which extend in the up-down direction. The tops of the columns 4 on both sides of the second furnace body 2 in the second direction are connected, and the plurality of columns 4 are clamped on both sides of the second furnace body 2 in the second direction. That is, the plurality of columns 4 can support the second furnace body 2 whose internal cavity is an oblong structure. The oblong cross-section side blowing area of ​​the second furnace body 2 has good pressure bearing capacity, and with the help of the clamping of the columns 4 on both sides, its pressure bearing capacity can be further increased. The bottom surface of the side blowing cavity 21 is coplanar with the bottom surface of the electric heating cavity 11, so that the first furnace body 1 and the second furnace body 2 can be seamlessly connected, and the two areas share a unified furnace bottom, which has strong integrity and is also convenient for setting the partition wall 3.

[0083] In some embodiments, the fourth end of the second furnace body 2 is provided with a fourth discharge port 25 and a fifth discharge port 26, and the fourth discharge port 25 is located above the fifth discharge port 26. Specifically, the fourth discharge port 25 is a low-position slag discharge port or matte discharge port, and the fourth discharge port 25 is used to discharge low-position slag or matte. The fifth discharge port 26 is located at the bottom and is used to discharge the molten metal. For example, the rear end of the second furnace body 2 is provided with a fourth discharge port 25 and a fifth discharge port 26, and the fourth discharge port 25 and the fifth discharge port 26 are located below the slag liquid surface.

[0084] like Figures 4 to 6 As shown, in some embodiments, the second furnace body 2 includes a furnace 31, and the furnace 31 includes a refractory material layer located on the inner side and a furnace shell located on the outer side. The furnace shell located on the outer side can support the refractory material layer located on the inner side.

[0085] The support member includes a support frame 41 and a plurality of elastic members 43 . The elastic members 43 can be elastically deformed. One end of the elastic member 43 is adjacent to the support frame 41 , and the other end of the elastic member 43 is connected to the shell of the furnace cylinder 31 .

[0086] Specifically, the shell of the furnace 31 includes a first shell plate 311, a second shell plate 312 and a third shell plate 313. The first shell plate 311 is located on the side of the refractory material layer of the furnace 31 facing away from the first furnace body 1 in the first direction, and the thickness direction of the first shell plate 311 is the first direction. The second shell plate 312 and the third shell plate 313 are located on both sides of the refractory material layer of the furnace 31 in the second direction, and the thickness direction of the second shell plate 312 and the thickness direction of the third shell plate 313 are both in the second direction. For example, the first shell plate 311 is on the rear side of the refractory material layer of the furnace 31, and the thickness direction of the first shell plate 311 is the front-to-back direction. The second shell plate 312 and the third shell plate 313 are located on both sides of the refractory material layer of the furnace 31 in the left-right direction, and the thickness direction of the second shell plate 312 and the thickness direction of the third shell plate 313 are both in the left-right direction. The elastic member 43 is a spring.

[0087] Each of the first shell plate 311, the second shell plate 312 and the third shell plate 313 is connected to at least one elastic member 43, and the elastic member 43 can push each of the first shell plate 311, the second shell plate 312 and the third shell plate 313 to move along the direction of the refractory material layer adjacent to the furnace 31. Thus, each of the first shell plate 311, the second shell plate 312 and the third shell plate 313 can cooperate with the elastic member 43 to support the refractory material layer located on the inner side.

[0088] The second furnace body 2 includes a furnace body water jacket located above the furnace cylinder 31. The support member includes a plurality of support rods 42, one end of the support rod 42 is connected to the support member, and the other end of the support rod 42 is connected to the furnace body water jacket. Specifically, the furnace body water jacket is connected to the furnace cylinder 31 and defines a side blowing chamber 21. The support rod 42 is a rigid rod body and supports the furnace body water jacket.

[0089] like Figure 4 and Figure 6 As shown, the furnace body water jacket includes a first furnace plate 32, a second furnace plate 33 and a third furnace plate 34. The first furnace plate 32 and the second furnace plate 33 are arranged opposite to each other in the second direction, the third furnace plate 34 and the insulation wall 3 are arranged opposite to each other in the first direction, and the insulation wall 3, the first furnace plate 32, the third furnace plate 34 and the second furnace plate 33 are arranged in sequence in the circumferential direction. One end of the support rod 42 is adjacent to the support frame 41, and the other end of the support rod 42 is connected to a corresponding one of the first furnace plate 32, the second furnace plate 33 and the third furnace plate 34.

[0090] In some embodiments, a fourth furnace plate 19 is provided at one end of the first furnace body 1 adjacent to the second furnace body 2 in the first direction, and the fourth furnace plate 19 includes an outer shell and a refractory layer located on the inner side. The fourth furnace plate 19 has an arch hole 191 penetrating it along the first direction, the arch hole 191 is connected to the side blowing chamber 21, the bottom surface of the arch hole 191 is coplanar with the bottom surface of the side blowing chamber 21, and the bottom surface of the arch hole 191 is located above the bottom surface of the electric heating chamber 11. The part of the fourth furnace plate 19 located above the arch hole 191 abuts against the partition wall 3. That is, the fourth furnace plate 19 on the first furnace body 1 is provided with an arch hole 191 communicating with the side blowing chamber 21, so as to facilitate the communication between the side blowing chamber 21 and the electric heating chamber 11. For example, the first furnace body 1 is provided with a fourth furnace plate 19 at the rear end, and the fourth furnace plate 19 has an arch hole 191 penetrating it along the front-back direction. The bottom surface of the arch hole 191 is a concave arc surface, and the top surface of the arch hole 191 is a horizontal surface. For example, in a cross section perpendicular to the first direction (front-rear direction), the outer peripheral contour of the projection of the arch hole 191 coincides with the projection of the cross section (groove) of the furnace 31 .

[0091] A portion of the bottom of the partition wall 3 extends into the arch hole 191 and is connected to the top surface of the arch hole 191. For example, the partition wall 3 is an L-shaped structure, and the horizontal section of the bottom of the partition wall 3 extends into the arch hole 191 and supports the upper part of the arch hole 191 of the first furnace body 1.

[0092] In some embodiments, the fourth end of the second furnace body 2 is provided with a sixth discharge port 27, a seventh discharge port 28 and an eighth discharge port 29, and the sixth discharge port 27, the seventh discharge port 28 and the eighth discharge port 29 are arranged in sequence from top to bottom. Specifically, the sixth discharge port 27 is a high-position slag discharge port for discharging slag, and the sixth discharge port 27 is used to discharge high-position slag, and the seventh discharge port 28 is a low-position slag discharge port or matte port, and the seventh discharge port 28 is used to discharge low-position slag or matte. The eighth discharge port 29 is located at the bottom and is used to discharge molten metal. For example, the rear end of the second furnace body 2 is provided with a sixth discharge port 27, a seventh discharge port 28 and an eighth discharge port 29, and the sixth discharge port 27, the seventh discharge port 28 and the eighth discharge port 29 are located below the slag liquid surface.

[0093] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0094] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0095] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0096] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0097] In the present utility model, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0098] Although the above embodiments have been shown and described, it is to be understood that the above embodiments are illustrative and cannot be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.

Claims

1. A side-blowing smelting and electric heat reduction integrated furnace, characterized in that: include: a first furnace body, wherein the first furnace body defines an electric heating cavity, the first furnace body is provided with an electrode device extending into the electric heating cavity, the electrode device is used to heat the material in the electric heating cavity, and the first furnace body is provided with a first feeding pipe and a first smoke exhaust port communicating with the electric heating cavity; The second furnace body defines a side blowing chamber, and the second furnace body is provided with a side blowing air port connected to the side blowing chamber, a second feeding pipe and a second smoke exhaust port, and oxygen or oxygen-enriched air or fuel is blown into the side blowing chamber from the side blowing air port to heat the material in the side blowing chamber, wherein the first furnace body is connected to the second furnace body, the electric heating chamber is connected to the side blowing chamber, at least one of the first furnace body and the second furnace body is provided with a slag outlet, and at least one of the first furnace body and the second furnace body is provided with a material outlet.

2. The side-blowing smelting and electric-heat reduction integrated furnace according to claim 1 is characterized in that: A support member is provided on the circumference of the second furnace body, and the support member is connected to the outer side surface of the second furnace body so as to support the second furnace body; The lower part of the electric heating chamber is communicated with the lower part of the side blowing chamber.

3. The side-blowing smelting and electric-heat reduction integrated furnace according to claim 2 is characterized in that: Each of the first furnace body and the second furnace body includes a shell located on the outside and a refractory material layer located on the inside; The upper portion of the first end of the electrothermal chamber in the length direction is separated from the upper portion of the third end of the side-blowing chamber in the length direction by a partition wall; The lower portion of the first end of the electric heating chamber in the length direction is communicated with the lower portion of the third end of the side blowing chamber in the length direction.

4. The side-blowing smelting and electric-heat reduction integrated furnace according to claim 3 is characterized in that: The length directions of the electric heating chamber and the side blowing chamber are both in the first direction, the end of the electric heating chamber adjacent to the side blowing chamber in the first direction is the first end, the end of the electric heating chamber away from the side blowing chamber in the first direction is the second end, the end of the side blowing chamber adjacent to the electric heating chamber in the first direction is the third end, and the end of the side blowing chamber away from the electric heating chamber in the first direction is the fourth end; On a cross section perpendicular to the first direction, the outer peripheral contour of the projection of the electrothermal cavity is a circle; The second furnace body is provided with a plurality of side blowing vents on at least one side in the second direction, and any two of the first direction, the second direction and the up-down direction are perpendicular to each other; The thickness direction of the partition wall is the first direction.

5. The side-blowing smelting and electric-heat reduction integrated furnace according to claim 4 is characterized in that: The first smoke exhaust port is opened at the upper part of the second end of the electrothermal chamber; The first furnace body is provided with a first discharge port, a second discharge port and a third discharge port on at least one side in the second direction, and the first discharge port, the second discharge port and the third discharge port are arranged in sequence from top to bottom; There are a plurality of the electrode devices and a plurality of the first feeding pipes, and the plurality of the electrode devices and the plurality of the first feeding pipes are alternately arranged in sequence on the top of the first furnace body in the first direction; The second furnace body is provided with a plurality of side blowing vents spaced apart in the first direction on both sides of the second direction; The partition wall is a water-cooled partition wall; The distance between two adjacent ones of the plurality of side blowing vents of the second furnace body on one side of the second direction in the first direction is greater than or equal to 0.6 m and less than or equal to 1 m; The distance between the side blowing port on one side of the second furnace body in the second direction and the side blowing port on the other side in the second direction is greater than or equal to 2 meters and less than or equal to 3.5 meters; The ratio of the height dimension to the width dimension of the side blowing cavity is greater than or equal to 1.4 and less than or equal to 1.

8.

6. The side-blowing smelting and electric-heat reduction integrated furnace according to claim 4, characterized in that: The bottom surface of the side-blowing chamber is located above the bottom surface of the electric-heating chamber, or the bottom surface of the side-blowing chamber is coplanar with the bottom surface of the electric-heating chamber; The size of the side blowing chamber in the up-down direction is greater than or equal to the size of the electric heating chamber in the up-down direction; There are multiple second feeding pipes, and the multiple second feeding pipes are located above the second furnace body. The smoke exhaust port is located above the second furnace body.

7. The side-blowing smelting and electric heat reduction integrated furnace according to claim 6 is characterized in that: On a cross section perpendicular to the first direction, the projection of the side blowing cavity includes a first part, a second part and a third part from bottom to top, and the first part, the second part and the third part form an oblong structure; The outer contour of the first part is a semicircle, the center position of the first part is located at the upper edge of the outer contour of the first part, the center position of the first part is the same as the center position of the projection of the electrothermal cavity on the cross section perpendicular to the first direction, and the diameter size of the first part is the same as the diameter size of the projection of the electrothermal cavity on the cross section perpendicular to the first direction, so that the bottom surface of the side-blowing cavity is coplanar with the bottom surface of the electrothermal cavity; The outer periphery of the second portion is a rectangle, and the size of the second portion in the second direction is the same as the diameter of the projection of the electrothermal cavity on a cross section perpendicular to the first direction; The outer contour of the third part is semicircular, the center of the third part is located at the lower edge of the outer contour of the third part, and the diameter of the third part is the same as the diameter of the projection of the electrothermal cavity on the cross section perpendicular to the first direction; The support member includes a plurality of columns extending in the up-down direction, the tops of the columns on both sides of the second furnace body in the second direction are connected, and the plurality of columns are sandwiched on both sides of the second furnace body in the second direction; The fourth end of the second furnace body is provided with a fourth discharge port and a fifth discharge port, and the fourth discharge port is located above the fifth discharge port.

8. The side-blowing smelting and electric-heat reduction integrated furnace according to claim 6, characterized in that: The second furnace body comprises a furnace, and the furnace comprises a refractory material layer located on the inner side and a furnace shell located on the outer side; The support member includes a support frame and a plurality of elastic members, the elastic members can be elastically deformed, one end of the elastic member is adjacent to the support frame, and the other end of the elastic member is connected to the furnace shell.

9. The side-blowing smelting and electric-heat reduction integrated furnace according to claim 8, characterized in that: The furnace shell comprises a first shell plate, a second shell plate and a third shell plate, wherein the first shell plate is located on the side of the refractory material layer of the furnace that faces away from the first furnace body in the first direction, and the thickness direction of the first shell plate is the first direction, and the second shell plate and the third shell plate are located on both sides of the refractory material layer of the furnace in the second direction, and the thickness direction of the second shell plate and the thickness direction of the third shell plate are both the second direction; Each of the first shell plate, the second shell plate and the third shell plate is connected to at least one of the elastic members, and the elastic member can push each of the first shell plate, the second shell plate and the third shell plate to move along the direction of the refractory material layer adjacent to the furnace; the second furnace body includes a furnace body water jacket located above the furnace body; The support member includes a plurality of support rods, one end of each support rod is connected to the support member, and the other end of each support rod is connected to the furnace body water jacket.

10. The side-blowing smelting and electric-thermal reduction integrated furnace according to any one of claims 1 to 9, characterized in that: The outer side of the first furnace body is provided with a first cooling spray device for spraying the outer surface thereof, and / or the first furnace body is provided with a molten steel jacket for cooling the first furnace body, and a cooling fluid can be passed into the molten steel jacket; The outer side of the second furnace body is provided with a second cooling spray device for spraying the outer surface thereof, and / or the second furnace body is provided with a slag line water jacket and a tuyere water jacket.

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