Process air injection pressure regulation system in multi-lance top-blowing refining process

Abstract

The present invention provides a process air injection pressure regulation system for a multi-lance top-blowing refining process, comprising: a first process air duct for inputting process air; an air inlet device, one end of the air inlet device connected to the first process air duct for receiving process air and controlling the process air output at a preset pressure; a second process air duct, one end of the second process air duct connected to the other end of the air inlet device for transmitting process air; a pressure regulating device, one end of the pressure regulating device connected to the other end of the second process air duct for regulating the pressure of the process air; and a third process air duct, one end of the third process air duct connected to the other end of the pressure regulating device, the other end of which is connected to the lances of a multi-lance top-blowing refining furnace for transmitting process air regulated by the pressure regulating device to the lances. This system optimizes smelting indicators, increases the flexibility of process air injection pressure, and correspondingly improves smelting efficiency, facilitating widespread promotion and use.

Description

Technical Field

[0001] The present invention relates to the technical field of copper smelting, and in particular to a process air blowing pressure regulating system in a multi-lance top-blowing blowing process. Background Art

[0002] Multi-lance top-blowing converting technology is a key step in the copper smelting process. It boasts advantages such as low flue gas volume, high sulfur dioxide concentration, minimal investment in subsequent flue gas treatment systems, zero low-altitude pollution, and stable continuous operation. As a result, it has been widely promoted and applied.

[0003] In existing multi-lance top-blowing converting technology, all physical and chemical reactions require intense agitation by process air to complete heat and mass transfer. The process air pressure is a core parameter of multi-lance top-blowing converting technology, crucially affecting the converting results. During copper smelting, parameters such as melt splashing intensity, copper grade and sulfur content in blister copper, and converting energy consumption all vary with process air pressure.

[0004] However, the flexibility of the process air blowing pressure in the existing multi-lance top-blowing blowing process is poor, resulting in low smelting efficiency, which is not conducive to large-scale promotion and use. Summary of the Invention

[0005] Based on this, the purpose of the present invention is to provide a process air blowing pressure regulating system in a multi-lance top-blowing refining process to solve the problem of poor flexibility of process air blowing pressure in the prior art.

[0006] A process air injection pressure regulating system for a multi-lance top-blowing refining process is applied to the multi-lance top-blowing refining process, comprising:

[0007] The first process air duct is used to input process air;

[0008] an air intake device, one end of which is in communication with the first process air duct, for receiving the process air and controlling the process air to be output at a preset pressure;

[0009] a second process air duct, one end of which is connected to the other end of the air inlet device and is used to transmit the process air;

[0010] a pressure regulating device, one end of which is connected to the other end of the second process air duct, for regulating the pressure of the process air;

[0011] A third process air duct, one end of the third process air duct is connected to the other end of the pressure regulating device, and the other end of the third process air duct is connected to the spray gun of the multi-spray gun top-blowing refining furnace, for transmitting the process air regulated by the pressure regulating device to the spray gun.

[0012] The beneficial effect of the present invention is that by connecting the first process air duct, the air intake device, the second process air duct, the pressure regulating device and the third process air duct together in sequence, when in use, the air intake device can pressurize the process air input by the first process air duct to a preset pressure and output it to the second process air duct, and the second process air duct transmits the process air processed by the air intake device to the pressure regulating device. At this time, the pressure regulating device can adjust the pressure of the received process air to the required value according to different working conditions encountered in actual production and output it to the spray gun of the multi-lance top-blowing refining furnace through the third process air duct, thereby improving the mass transfer and reaction process of the process air in the multi-lance top-blowing refining process, optimizing the smelting indicators, improving the flexibility of the process air blowing pressure, and correspondingly improving the smelting efficiency, which is conducive to large-scale promotion and use.

[0013] Preferably, the air intake device includes a first blower, and the pressure regulating device includes a first air duct valve and a pressure regulating valve group connected in sequence from left to right, the first air duct valve is used to adjust the opening and closing of the second process air duct, and the pressure regulating valve group is used to adjust the pressure of the process air after passing through the first blower.

[0014] Preferably, the first process air duct is provided in plurality, the second process air duct is provided in plurality, the air intake device includes a plurality of second blowers, the pressure regulating device includes a plurality of second air duct valves, the number of the first process air duct, the second process air duct, the second blowers and the second air duct valves corresponds one to one, one end of each of the second blowers is connected to the first process air duct, and the other end is connected to the second process air duct, the other end of each of the second process air ducts is connected to the second air duct valve, and multiple second blowers are connected in parallel, and the second air duct valve is used to adjust the opening and closing of the second process air duct.

[0015] Preferably, the air intake device includes a plurality of third blowers, the pressure regulating device includes a plurality of third air duct valves, the plurality of third blowers and the plurality of third air duct valves are connected in series and arranged at intervals, a fourth air duct valve is provided between adjacent third blowers and the third air duct valves, one end of the fourth air duct valve is connected between the adjacent third blower and the third air duct valve, and the other end is connected to the third process air duct.

[0016] Preferably, the air intake device includes a fourth blower, and the fourth blower includes an impeller, and the rotation speed of the impeller is adjustable.

[0017] Preferably, the air intake device includes a fifth blower, the inlet of the fifth blower is provided with a guide vane, the outlet of the fifth blower is provided with a vent valve group, and the guide vane and the vent valve group are both used to adjust the pressure of the process air generated by the fifth blower.

[0018] Preferably, the pressure of the process air varies in the range of 0.1 MPa to 0.8 MPa.

[0019] Preferably, the first process air duct, the second process air duct and the third process air duct all adopt an integrally formed structure.

[0020] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A structural block diagram of a process air injection pressure regulating system for a multi-lance top-blowing refining process according to a first embodiment of the present invention;

[0022] Figure 2 A schematic structural diagram of a process air injection pressure regulating system in a multi-lance top-blowing refining process according to a second embodiment of the present invention;

[0023] Figure 3 A schematic structural diagram of a process air injection pressure regulating system for a multi-lance top-blowing refining process according to a third embodiment of the present invention;

[0024] Figure 4 A schematic structural diagram of a process air injection pressure regulating system for a multi-lance top-blowing refining process according to a fourth embodiment of the present invention;

[0025] Figure 5 A schematic structural diagram of a process air injection pressure regulating system in a multi-lance top-blowing refining process provided by a sixth embodiment of the present invention.

[0026] The following specific embodiments will further illustrate the present invention in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0027] To facilitate understanding of the present invention, the present invention will be described more fully below with reference to the accompanying drawings. The drawings illustrate several embodiments of the present invention. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present invention.

[0028] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used in this specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0030] See also Figure 1 , shown is a process air blowing pressure regulating system in a multi-lance top-blowing refining process in the first embodiment of the present invention, comprising: a first process air duct 10, an air intake device 20, a second process air duct 30, a pressure regulating device 40 and a third process air duct 50.

[0031] The process air injection pressure regulating system in the multi-lance top-blowing refining process is applied to the multi-lance top-blowing refining process, including:

[0032] The first process air duct 10 is used to input process air;

[0033] An air inlet device 20, one end of which is connected to the first process air duct 10, for receiving process air and controlling the process air to be output at a preset pressure;

[0034] A second process air duct 30, one end of which is connected to the other end of the air inlet device 20 for transmitting process air;

[0035] A pressure regulating device 40, one end of which is connected to the other end of the second process air duct 30, for regulating the pressure of the process air;

[0036] The third process air duct 50 has one end connected to the other end of the pressure regulating device 40 , and the other end of the third process air duct 50 is connected to the spray gun of the multi-lance top-blowing refining furnace, and is used to transmit the process air regulated by the pressure regulating device 40 to the spray gun.

[0037] In this embodiment, if Figure 1As shown, it should be noted that the first process air duct 10, the air intake device 20, the second process air duct 30, the pressure regulating device 40 and the third process air duct 50 are connected in series from left to right. Specifically, one end of the first process air duct 10 is connected to the outside air, and the other end is connected to the air intake device 20. When the air intake device 20 is working, the air intake device 20 can generate a large suction force to suck the outside air into the first process air duct 10 and form process air in the first process air duct 10. The above-mentioned process air is transmitted to the air intake device 20 through the first process air duct 10. It can be understood that in this embodiment, the air intake device 20 has a certain pressurizing function, and a certain pressure value is preset in the air intake device 20. When the above-mentioned process air flows to the interior of the air intake device 20, the air intake device 20 can immediately pressurize the above-mentioned process air to the preset value and output it to the second process air duct 30.

[0038] In this embodiment, it is understood that the air intake device 20 initially pressurizes the process air received from the first process air duct 10 to a constant pressure before transmitting it to the second process air duct 30. The process air flowing out of the air intake device 20 then flows through the second process air duct 30 to the pressure regulating device 40. In this embodiment, it should be noted that the pressure regulating device 40 is capable of adjusting the pressure of the received process air within a preset range. Specifically, in this embodiment, the pressure of the process air ranges from 0.1 MPa to 0.8 MPa. Finally, the pressure regulating device 40 transmits the adjusted process air through the third process air duct 50 to the lances of the multi-lance top-blowing converting furnace for continued copper smelting.

[0039] In this embodiment, the aforementioned approach allows the process air pressure to be adjusted to suit different actual blowing conditions during multi-lance top-blowing blowing, enabling the blowing process to be performed consistently and efficiently. Furthermore, in this embodiment, the first process air duct 10, the second process air duct 30, and the third process air duct 50 all utilize an integrally molded structure, facilitating their production and installation, as well as the implementation of the system.

[0040] In specific implementation, the first process air duct 10, the air intake device 20, the second process air duct 30, the pressure regulating device 40 and the third process air duct 50 are connected together in sequence. When in use, the air intake device 40 can pressurize the process air input by the first process air duct 10 to a preset pressure and output it to the second process air duct 30. The second process air duct 30 transmits the process air processed by the air intake device 20 to the pressure regulating device 40. At this time, the pressure regulating device 40 can adjust the pressure of the received process air to the required value according to different working conditions encountered in actual production and output it to the spray gun of the multi-lance top-blowing refining furnace through the third process air duct 50, so as to improve the mass transfer and reaction process of the process air in the multi-lance top-blowing refining process, optimize the smelting indicators, improve the flexibility of the process air blowing pressure, and correspondingly improve the smelting efficiency, which is conducive to large-scale promotion and use.

[0041] It should be noted that the above implementation process is only to illustrate the feasibility of the present application, but this does not mean that the process air blowing pressure regulation system in the multi-lance top-blowing refining process of the present application has only the above-mentioned only implementation process. On the contrary, as long as the process air blowing pressure regulation system in the multi-lance top-blowing refining process of the present application can be implemented, it can be included in the feasible implementation plan of the present application.

[0042] In summary, the process air injection pressure regulation system in the multi-lance top-blowing refining process in the above-mentioned embodiments of the present invention improves the mass transfer and reaction process of the process air in the multi-lance top-blowing refining process, optimizes the smelting indicators, improves the flexibility of the process air injection pressure, and correspondingly improves the smelting efficiency, which is conducive to large-scale promotion and use.

[0043] See also Figure 2 , which shows a process air injection pressure regulating system in a multi-lance top blowing process in a second embodiment of the present invention, specifically:

[0044] In this embodiment, it should be noted that the air intake device 20 includes a first blower 21, and the pressure regulating device 40 includes a first air duct valve 41 and a pressure regulating valve group 42 connected in sequence from left to right. When in use, the first air duct valve 41 is used to adjust the opening and closing of the second process air duct 30, and the pressure regulating valve group 42 is used to adjust the pressure of the process air after passing through the first blower 21.

[0045] In this embodiment, the first blower 21 can pressurize the process air input from the first process air duct 10 to a certain value within a preset range. Specifically, in this embodiment, the preset pressure value range of the first blower 21 is 0.1MPa to 0.8MPa. When in use, the opening and closing of the first air duct valve can be adjusted according to actual needs, or the pressure regulating valve group 42 can be used to adjust the pressure of the process air output from the first blower 21, so that the refining process can be carried out continuously in an efficient environment, thereby improving the flexibility of the process air blowing pressure.

[0046] It should be noted that the implementation principle and some technical effects of the device provided in the second embodiment of the present invention are the same as those of the first embodiment. For the sake of brief description, for matters not mentioned in this embodiment, reference may be made to the corresponding content in the first embodiment.

[0047] See also Figure 3 , shown is a process air injection pressure regulating system in a multi-lance top blowing process in a third embodiment of the present invention, specifically:

[0048] In this embodiment, it should be noted that, a plurality of first process air ducts 10 are provided, a plurality of second process air ducts 30 are provided, the air intake device 20 includes a plurality of second blowers 22, and the pressure regulating device 40 includes a plurality of second air duct valves 43. During installation, the number of first process air ducts 10, second process air ducts 30, second blowers 22 and second air duct valves 43 corresponds one to one. Specifically, one end of each second blower 22 is connected to the first process air duct 10, and the other end is connected to the second process air duct 30. The other end of each second process air duct 30 is connected to the second air duct valve 43, and multiple second blowers 22 are connected in parallel, wherein the second air duct valve 43 is used to adjust the opening and closing of the second process air duct 30.

[0049] In this embodiment, it should be noted that different pressure values ​​are preset inside the plurality of second blowers 22. Specifically, the second blowers 22 can be set to display values ​​such as 0.1 MPa, 0.2 MPa, and 0.3 MPa, respectively. When installing, Figure 3As shown, the second blowers 22 are connected in parallel. In actual operation, when the process air pressure needs to be adjusted from 0.3 MPa gauge to 0.1 MPa gauge, the second blower 22 with an outlet pressure of 0.3 MPa gauge and the corresponding second air duct valve 43 are opened, and the second blower 22 with an outlet pressure of 0.1 MPa gauge and the corresponding second air duct valve 43 are closed, thereby outputting process air with a pressure value of 0.1 MPa. In other cases, if the process air pressure needs to be adjusted to other levels, this can be achieved according to the above principles. Finally, the adjusted process air is transmitted to the lances of the multi-lance top-blowing converting furnace through the third process air duct 50, and copper smelting continues, so that the converting process can be carried out continuously in an efficient environment, improving the flexibility of the process air injection pressure.

[0050] It should be noted that the implementation principle and some technical effects of the device provided in the third embodiment of the present invention are the same as those of the first embodiment. For the sake of brief description, for matters not mentioned in this embodiment, reference may be made to the corresponding content in the first embodiment.

[0051] See also Figure 4 , shown is a process air injection pressure regulating system in a multi-lance top blowing refining process in a fourth embodiment of the present invention, specifically:

[0052] In this embodiment, it should be noted that the air intake device 20 includes multiple third blowers 23, and the pressure regulating device 40 includes multiple third air duct valves 44. During installation, the multiple third blowers 23 and the multiple third air duct valves 44 are connected in series and arranged at intervals. A fourth air duct valve 45 is provided between adjacent third blowers 23 and third air duct valves 44. Specifically, one end of the fourth air duct valve 45 is connected between the adjacent third blowers 23 and the third air duct valve 44, and the other end is connected to the third process air duct 50.

[0053] In this embodiment, it should be noted that different pressure values ​​are preset inside the plurality of third blowers 23. Specifically, the third blowers 23 can be set to have gauge pressures of 0.1 MPa, 0.2 MPa, 0.3 MPa, etc., and when installed, Figure 3As shown, the third blowers 23 are connected in parallel. In actual operation, when the process air pressure needs to be adjusted from 0.3 MPa to 0.2 MPa, the third blower 23 with a gauge pressure of 0.2 MPa and its corresponding third air duct valve 44 and fourth air duct valve 45 are opened, and the last third blower 23 is closed. The remaining third air duct valves 44 and fourth air duct valves 45 are then adjusted accordingly to output process air at a pressure of 0.2 MPa. In other cases, if the process air pressure needs to be adjusted to other levels, this can be achieved using the above principles. Finally, the adjusted process air is transmitted through the third process air duct 50 to the lances of the multi-lance top-blowing converting furnace, where copper smelting continues. This allows the converting process to continue in an efficient environment, improving the flexibility of the process air injection pressure.

[0054] It should be noted that the implementation principle and some technical effects of the device provided in the fourth embodiment of the present invention are the same as those of the first embodiment. For the sake of brief description, for matters not mentioned in this embodiment, reference may be made to the corresponding content in the first embodiment.

[0055] A fifth embodiment of the present invention provides a process air injection pressure regulating system for a multi-lance top-blowing refining process, wherein:

[0056] In this embodiment, it should be noted that the air intake device 20 includes a fourth blower 24, wherein the fourth blower 24 includes an impeller with an adjustable speed. In actual operation, when the gauge pressure of the fourth blower 24 needs to be adjusted from 0.5 MPa to 0.3 MPa, the outlet pressure of the fourth blower 24 can be reduced by reducing the impeller speed of the fourth blower 24, thereby adjusting the pressure of the process air. In other cases, if the process air needs to be adjusted to other levels, this can be achieved according to the above principles. Finally, the adjusted process air is transmitted to the lances of the multi-lance top-blowing converting furnace through the third process air duct 50, and copper smelting continues, so that the converting process can be carried out continuously in an efficient environment, thereby improving the flexibility of the process air injection pressure.

[0057] It should be noted that the implementation principle and some technical effects of the device provided in the fifth embodiment of the present invention are the same as those of the first embodiment. For the sake of brief description, for matters not mentioned in this embodiment, reference may be made to the corresponding content in the first embodiment.

[0058] See also Figure 5 , which shows a process air injection pressure regulating system in a multi-lance top blowing refining process in a sixth embodiment of the present invention, specifically:

[0059] In this embodiment, it should be noted that the air intake device 20 includes a fifth blower 25. When installed, a guide vane is provided at the inlet of the fifth blower 25, and a vent valve group 60 is provided at the outlet of the fifth blower 25. When in use, the guide vane and the vent valve group 60 are both used to adjust the pressure of the process air generated by the fifth blower 25.

[0060] In this embodiment, it should be noted that when the injection pressure of the process air needs to be adjusted from a gauge pressure of 0.2 MPa to a gauge pressure of 0.25 MPa, it can be achieved by adjusting the guide vanes at the inlet of the fifth blower 25; when the injection pressure of the process air needs to be adjusted from a gauge pressure of 0.25 MPa to 0.1 MPa, it can be achieved by adjusting the vent valve group 60 at the outlet of the fifth blower 25, thereby achieving the adjustment of the pressure of the process air. In other cases, if the process air needs to be adjusted to other sizes, it can be achieved according to the above principles. Finally, the adjusted process air is transmitted to the spray gun of the multi-lance top-blowing refining furnace through the third process air duct 50, and the copper smelting is continued, so that the refining process can be carried out continuously in an efficient environment, thereby improving the flexibility of the process air injection pressure.

[0061] It should be noted that the implementation principle and some technical effects of the device provided in the sixth embodiment of the present invention are the same as those of the first embodiment. For the sake of brief description, for matters not mentioned in this embodiment, reference may be made to the corresponding content in the first embodiment.

[0062] In summary, the process air injection pressure regulation system in the multi-lance top-blowing refining process provided by the present invention improves the mass transfer and reaction process of the process air in the multi-lance top-blowing refining process, optimizes the smelting indicators, improves the flexibility of the process air injection pressure, and correspondingly improves the smelting efficiency, which is conducive to large-scale promotion and use.

[0063] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0064] 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 process air injection pressure regulating system in a multi-lance top-blowing refining process, characterized by: Applied to multi-lance top-blowing refining process, including: The first process air duct is used to input process air; an air intake device, one end of which is in communication with the first process air duct, for receiving the process air and controlling the process air to be output at a preset pressure; a second process air duct, one end of which is connected to the other end of the air inlet device and is used to transmit the process air; a pressure regulating device, one end of which is connected to the other end of the second process air duct, for regulating the pressure of the process air; a third process air duct, one end of which is connected to the other end of the pressure regulating device, and the other end of which is connected to the spray gun of the multi-lance top-blowing converting furnace, for transmitting the process air regulated by the pressure regulating device to the spray gun; The air intake device includes a first blower, and the pressure regulating device includes a first air duct valve and a pressure regulating valve group connected in sequence, the first air duct valve is used to adjust the opening and closing of the second process air duct, and the pressure regulating valve group is used to adjust the pressure of the process air after passing through the first blower; or the air intake device includes multiple third blowers, and the pressure regulating device includes multiple third air duct valves, multiple third blowers and multiple third air duct valves are connected in series and arranged at intervals, and a fourth air duct valve is provided between adjacent third blowers and the third air duct valves, one end of the fourth air duct valve is connected between the adjacent third blower and the third air duct valve, and the other end is connected to the third process air duct.

2. The process air injection pressure regulating system in a multi-lance top-blowing refining process according to any one of claim 1, characterized in that: The air intake device includes a fourth blower, and the fourth blower includes an impeller, and the rotation speed of the impeller is adjustable.

3. The process air injection pressure regulating system in a multi-lance top-blowing blowing process according to any one of claim 1, characterized in that: The air intake device includes a fifth blower, the inlet of the fifth blower is provided with a guide vane, and the outlet of the fifth blower is provided with a vent valve group, and the guide vane and the vent valve group are both used to adjust the pressure of the process air generated by the fifth blower.

4. The process air injection pressure regulating system in a multi-lance top-blowing refining process according to claim 1, characterized in that: The pressure of the process air varies in the range of 0.1 MPa to 0.8 MPa.

5. The process air injection pressure regulating system in a multi-lance top-blowing refining process according to claim 1, characterized in that: The first process air duct, the second process air duct and the third process air duct all adopt an integrated molding structure.

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