Oxygen-enriched bottom blowing copper smelting furnace

Abstract

The utility model discloses an oxygen-enriched bottom blowing copper smelting furnace which comprises a copper smelting furnace body and a rotating power mechanism, supporting legs are fixed on the bottom side of the copper smelting furnace body, fixing seats are fixed at the bottom ends of the supporting legs, a feeding port and a smoke outlet are respectively formed in the upper side of the copper smelting furnace body, a burner is arranged at the upper end of the left side of the copper smelting furnace body, and the rotating power mechanism is arranged at the upper end of the right side of the copper smelting furnace body. A discharging opening is formed in the bottom end of the left side of the copper smelting furnace body, and a ventilation opening is formed in the front side of the copper smelting furnace body; the oxygen-enriched bottom blowing copper smelting furnace comprises a copper smelting furnace body, at least three oxygen lances are rotatably connected to the bottom side of the copper smelting furnace body at equal intervals, the rotary oxygen lances are arranged at the bottom end of the copper smelting furnace body at equal intervals, the oxygen lances are rotated through a rotary power mechanism, inclined nozzles are installed at the top ends of the oxygen lances, and when the rotary power mechanism rotates, the oxygen lances and the nozzles can be driven to rotate; the oxygen spraying area is increased, the contact area of oxygen and materials is increased, and the oxidation effect on the materials is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of copper smelting furnaces, and particularly relates to an oxygen-enriched bottom-blown copper smelting furnace. Background Technique

[0002] Flash smelting and bath smelting are two major types of widely used copper pyrometallurgical smelting methods. Bath smelting has been widely used because the raw materials do not need to be deeply dried. For example, the existing Noranda process, Vanyukov process, top-blown submerged lance process, etc. These bath smelting methods have their own advantages and disadvantages. The Noranda process uses a reactor similar to a horizontal converter, and a row of air vents is provided on one side of the reactor. Air or oxygen-enriched air is blown into the reaction vessel through the air vents.

[0003] After retrieval, a patent with the application number 201620577407.5 discloses an oxygen-enriched bottom-blown copper smelting furnace. This patent can automatically control the oxygen output rate of the oxygen lance during the smelting process of the bottom-blown copper smelting reaction vessel by setting an oxygen pressure regulating valve, a solenoid valve, and a motor, and has good safety performance. However, since the oxygen lance is fixed at the bottom of the furnace cavity, the oxygen ejected from the oxygen lance can only reach some of the materials, and the contact area is limited, thereby reducing the oxidation effect on the materials. Content of the Utility Model

[0004] To solve the problems existing in the prior art, the utility model provides an oxygen-enriched bottom-blown copper smelting furnace. By equidistantly arranging rotary oxygen lances at the bottom end of the copper smelting furnace body, and each oxygen lance is rotated by a rotary power mechanism, and an inclined nozzle is installed at the top end of the oxygen lance. When the rotary power mechanism rotates, it can drive the oxygen lance and the nozzle to rotate, increasing the oxygen spraying area and the contact area between oxygen and materials, and ensuring the oxidation effect on the materials.

[0005] To achieve the above object, the utility model provides the following technical solutions:

[0006] An oxygen-enriched bottom-blown copper smelting furnace, comprising a copper smelting furnace body and a rotational power mechanism. Legs are fixed to the bottom side of the copper smelting furnace body, and a fixed seat is fixed to the bottom end of the legs. A feed inlet and a flue gas outlet are respectively opened on the upper side of the copper smelting furnace body. A burner is opened at the upper end on the left side of the copper smelting furnace body, and a discharge port is opened at the bottom end on the left side of the copper smelting furnace body. A ventilation opening is opened on the front side of the copper smelting furnace body. At least three oxygen lances are rotatably connected at equal intervals to the bottom side of the copper smelting furnace body. Nozzles located inside the cavity of the copper smelting furnace body are installed at the top ends of the oxygen lances. The air outlets of the nozzles are all inclined. Rotary joints are installed at the bottom ends of the oxygen lances. Rotational power mechanisms located on the right side of the oxygen lances are provided on the bottom side of the copper smelting furnace body. At least three heat insulation seats are fixedly arranged at equal intervals on the bottom side of the copper smelting furnace body. Servo motors are installed at the bottom ends of the heat insulation seats. A first gear is sleeved on the output shaft of the servo motor. Second gears are sleeved on the sides of the oxygen lances. The first gear and the second gear are meshed. A partition net is arranged at the bottom of the inner cavity of the copper smelting furnace body, and the nozzles are located in the inner cavity at the bottom of the partition net. By equidistantly arranging rotatable oxygen lances at the bottom end of the copper smelting furnace body, and the oxygen lances are respectively rotated by the rotational power mechanism, and inclined nozzles are installed at the top ends of the oxygen lances, the oxygen lances and the nozzles can be driven to rotate when the rotational power mechanism rotates, which increases the oxygen injection area, increases the contact area between oxygen and materials, and ensures the oxidation effect on the materials. By arranging the partition net and the nozzles are located in the inner cavity at the bottom of the partition net, direct contact between the nozzles and the materials is avoided, ensuring the rotational effect of the nozzles. By installing a rotary joint at the bottom of the oxygen lance, the rotational property between the oxygen lance and the oxygen inlet pipe is ensured.

[0007] Further, the nozzle is a ceramic nozzle, which improves the heat resistance of the nozzle.

[0008] Compared with the prior art, the beneficial effects of the present utility model are as follows: By equidistantly arranging rotatable oxygen lances at the bottom end of the copper smelting furnace body, and the oxygen lances are respectively rotated by the rotational power mechanism, and inclined nozzles are installed at the top ends of the oxygen lances, the oxygen lances and the nozzles can be driven to rotate when the rotational power mechanism rotates, which increases the oxygen injection area, increases the contact area between oxygen and materials, and ensures the oxidation effect on the materials. By arranging the partition net and the nozzles are located in the inner cavity at the bottom of the partition net, direct contact between the nozzles and the materials is avoided, ensuring the rotational effect of the nozzles. By installing a rotary joint at the bottom of the oxygen lance, the rotational property between the oxygen lance and the oxygen inlet pipe is ensured. The nozzle is a ceramic nozzle, which improves the heat resistance of the nozzle. Description of the Drawings

[0009] Figure 1 It is a schematic structural diagram of the present utility model.

[0010] Figure 2 It is a schematic structural diagram of the oxygen lance and the nozzle of the present utility model.

[0011] In the figure: 1 copper smelting furnace body, 2 legs, 3 fixed seats, 4 feed inlets, 5 flue gas outlets, 6 burners, 7 rotation power mechanisms, 71 heat insulation seats, 72 servo motors, 73 first gears, 74 second gears, 8 discharge outlets, 9 ventilation openings, 10 oxygen lances, 11 rotary joints, 12 nozzles, 13 partition nets. Specific embodiments

[0012] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0013] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model. Embodiment

[0014] See the attached Figure 1-2As shown in the figure, an oxygen-enriched bottom-blown copper smelting furnace includes a copper smelting furnace body 1 and a rotating power mechanism 7. Legs 2 are fixed to the bottom side of the copper smelting furnace body 1, and a fixed seat 3 is fixed to the bottom end of the legs 2. A feed inlet 4 and a flue gas outlet 5 are respectively opened on the upper side of the copper smelting furnace body 1. A burner 6 is opened at the upper end of the left side of the copper smelting furnace body 1, and a discharge outlet 8 is opened at the bottom end of the left side of the copper smelting furnace body 1. A ventilation opening 9 is opened on the front side of the copper smelting furnace body 1. At least three oxygen lances 10 are rotatably connected to the bottom side of the copper smelting furnace body 1 at equal intervals. Nozzles 12 located in the inner cavity of the copper smelting furnace body 1 are installed at the top ends of the oxygen lances 10. The air outlets of the nozzles 12 are all inclined. Rotary joints 11 are installed at the bottom ends of the oxygen lances 10. A rotating power mechanism is provided on the bottom side of the copper smelting furnace body 1 on the right side of the oxygen lances 10. At least three heat insulation seats 71 are fixedly arranged at equal intervals on the bottom side of the copper smelting furnace body 1. Servo motors 72 are installed at the bottom ends of the heat insulation seats 71. A first gear 73 is sleeved on the output shaft of the servo motor 72. Second gears 74 are sleeved on the sides of the oxygen lances 10. The first gear 73 and the second gear 74 are meshed. A partition net 13 is arranged at the bottom of the inner cavity of the copper smelting furnace body 1. The nozzles 12 are located in the inner cavity at the bottom of the partition net 13. By arranging the rotating oxygen lances 10 at equal intervals at the bottom end of the copper smelting furnace body 1, and the oxygen lances 10 are respectively rotated by the rotating power mechanism 7, and the inclined nozzles 12 are installed at the top ends of the oxygen lances 10. When the rotating power mechanism 7 rotates, it can drive the oxygen lances 10 and the nozzles 12 to rotate, improving the oxygen injection area and the contact area between oxygen and materials, ensuring the oxidation effect on the materials. By arranging the partition net 13 and the nozzles 12 are located in the inner cavity at the bottom of the partition net 13, it avoids the direct contact between the nozzles 12 and the materials, ensuring the rotation effect of the nozzles 12. By arranging the rotary joints 11 at the bottom of the oxygen lances 10, the rotatability of the oxygen lances 10 and the oxygen inlet pipes is ensured.

[0015] The nozzle 12 is a ceramic nozzle, which improves the heat resistance of the nozzle 12.

[0016] Working principle: The crushed and ground copper ore is added into the copper smelting furnace body 1 through the feed inlet 4. At this time, the copper ore falls above the partition net 13. The external oxygen inlet pipes are respectively installed on the rotary joints 11, ensuring the rotatability of the oxygen lances 10 and the oxygen inlet pipes. The oxygen inlet pipes transport oxygen into the oxygen lances 10 and finally spray it out through the nozzles 12. At the same time, the servo motor 72 rotates through the first gear 73 and the second gear 74, thereby driving the oxygen lances 10 and the nozzles 12 to rotate, improving the oxygen injection area and the contact area between oxygen and materials, ensuring the oxidation effect on the materials. By arranging the partition net 13 and the nozzles 12 are located in the inner cavity at the bottom of the partition net 13, it avoids the direct contact between the nozzles 12 and the materials, ensuring the rotation effect of the nozzles 12. The oxygen entering the copper smelting furnace body 1 reacts with the copper ore to form oxides. Then the servo motor 72 stops running, and the burner 6 provides heat for the smelting furnace body 1 to smelt the oxidized copper ore.

[0017] The foregoing has shown and described the basic principles, main features, and advantages of the present utility model. For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced by the present utility model, and any reference signs in the claims should not be regarded as limiting the claims involved.

[0018] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An oxygen-enriched bottom-blown copper smelting furnace, comprising a copper smelting furnace body and a rotating power mechanism. Legs are fixed to the bottom side of the copper smelting furnace body, and a fixed seat is fixed to the bottom ends of the legs. A feed inlet and a flue gas outlet are respectively formed in the upper side of the copper smelting furnace body. A burner is formed in the upper left end of the copper smelting furnace body, and a discharge outlet is formed in the lower left end of the copper smelting furnace body. A ventilation opening is formed in the front side of the copper smelting furnace body, and it is characterized in that: At least three oxygen lances are rotatably connected at equal intervals to the bottom side of the copper smelting furnace body. Nozzles located inside the cavity of the copper smelting furnace body are installed at the top ends of the oxygen lances. The air outlets of the nozzles are all inclined. Rotary joints are installed at the bottom ends of the oxygen lances. Rotating power mechanisms located on the right side of the oxygen lances are provided on the bottom side of the copper smelting furnace body. At least three heat insulation seats are fixedly arranged at equal intervals on the bottom side of the copper smelting furnace body. Servo motors are installed at the bottom ends of the heat insulation seats. A first gear is sleeved on the output shaft of the servo motor. Second gears are sleeved on the sides of the oxygen lances. The first gear and the second gear are meshed. A partition net is arranged at the bottom of the inner cavity of the copper smelting furnace body. The nozzles are located in the inner cavity at the bottom of the partition net.

2. The oxygen-enriched bottom-blown copper smelting furnace according to claim 1, wherein: The nozzle is a ceramic nozzle.

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