Anti-blocking system for bottom blowing air brick of copper refining furnace

Abstract

The utility model belongs to the field of pyrometallurgy, and particularly relates to a copper refining furnace bottom blowing air brick anti-blocking system which comprises an air brick, a locking device, a temperature measuring device, a gas input assembly, a process gas source, a standby gas source, a gas source switching device, a blowing blocking device, a controller and an alarm device. The gas input assembly, the blocking blowing device and the gas source switching device are in gas communication through pipelines in sequence, the gas input assembly comprises a gas input pipe and a flow detection device, the blocking blowing device is used for eliminating blocking by changing gas flow when the porous brick is blocked, and the temperature measuring device comprises a temperature thermocouple. And the gas source switching device is used for realizing switching between the process gas source and the standby gas source. According to the scheme, various problems occurring in bottom blowing ventilation of the copper refining furnace can be detected in time, the problem of air brick blockage can be effectively solved, and the situation that the copper refining process effect is affected or even production cannot be achieved due to air brick blockage or excessive erosion is avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to pyrometallurgical field, concretely relates to a copper refining furnace bottom blowing gas permeable brick anti -blocking system. BACKGROUND

[0002] The statements in this section are merely to provide background information related to the technical solutions of the present application and to assist in understanding, and do not necessarily constitute the prior art for the technical solutions of the present application.

[0003] In the field of pyrometallurgical refining, the rotary anode furnace is the main equipment for pyrometallurgical refining. The main task of anode refining is to further remove impurities with strong oxygen combination ability from the crude copper produced in the upstream process through oxidation-reduction operation, and to retain precious metals. The 6-10 gas permeable bricks installed at the bottom of the rotary anode furnace play an important role in the production process. By blowing inert gas through the gas permeable bricks, not only the temperature of the melt is uniform, but also the slag and gas in the melt are effectively floated, and high-grade copper liquid is refined, and the copper liquid is then cast into qualified copper anode plates through the disc casting system.

[0004] The anode furnace refining has five process steps of feeding, oxidation, slagging, reduction, and casting. The gas permeable bricks are arranged in the anode furnace bottom area according to the flow field, and the flow and pressure control of each gas permeable brick in production operation are not the same. In the production process, the copper liquid may penetrate into the pores of the gas permeable brick under the action of static pressure, causing the pores to be blocked and reducing the effective ventilation area of the brick, thereby reducing the effectiveness of the gas permeable brick. In order to prevent the pores of the brick from being completely "filled" and losing the ventilation function, the process gas flow through the gas permeable brick must be within a reasonable range to protect the gas permeable brick.

[0005] In actual production, various factors such as low process gas source pressure and uncontrolled gas supply circuit of the gas permeable brick often cause the bottom blowing gas permeable brick to be blocked. Due to various factors, the service life of the rotary anode furnace gas permeable brick is short, and in addition to excessive loss of plugging, the most common blockage causes the gas permeable brick to lose the bottom blowing function. The plugging of the gas permeable brick that cannot meet the process greatly affects the oxidation-reduction operation efficiency of the rotary anode furnace and increases the production cost. In addition to blockage, if the gas permeable brick is not maintained properly or is not replaced in time, it will also pose a threat to the safe production of the anode furnace. For possible problems of the gas permeable brick, current methods mainly rely on manual observation and manual experience to judge, which has low reliability and cannot be monitored in real time. UTILITY MODEL CONTENTS

[0006] In order to timely find and solve the problem of copper refining furnace bottom blowing gas, and effectively avoid the influence of bottom blowing gas on copper refining process effect and even unable to produce, the application provides a copper refining furnace bottom blowing gas brick anti-blocking system, which comprises: a gas brick, a locking device, a temperature measuring device, a gas input assembly, a process gas source, a backup gas source, a gas source switching device, a blowing and blocking device, a controller and an alarm device, the gas brick is installed on the furnace bottom and comprises a mother brick, a wear-resistant sleeve brick and a porous brick, the mother brick wraps the wear-resistant sleeve brick, the wear-resistant sleeve brick wraps the porous brick, the porous brick is in the shape of a circular truncated cone and the diameter of the lower bottom surface is greater than that of the upper bottom surface, the gas input assembly, the blowing and blocking device and the gas source switching device are sequentially connected in gas communication through pipelines, the gas input assembly is located at the bottom of the porous brick and comprises a gas input pipe and a flow detection device, the flow detection device is used for detecting whether the porous brick is blocked, the blowing and blocking device is used for eliminating the blockage by changing the gas flow when the porous brick is blocked, the locking device is used for fixing the gas input assembly to the bottom of the porous brick, the temperature measuring device comprises a temperature measuring thermocouple which is inserted into the interior of the porous brick, the gas source switching device is connected to the process gas source and the backup gas source and is used for switching between the process gas source and the backup gas source, and the process gas source and the backup gas source are respectively provided with pressure detection devices, and the controller is connected with the temperature measuring device, the flow detection device, the blowing and blocking device, the gas source switching device, the pressure detection device and the alarm device.

[0007] In one embodiment, the copper refining furnace bottom blowing gas brick anti-blocking system further comprises a UPS power supply for supplying power to the system when abnormal power failure occurs.

[0008] In one embodiment, the alarm device can alarm in the sound and light mode.

[0009] In one embodiment, the alarm device comprises a touch screen, a multi-color lighthouse and a buzzer.

[0010] In one embodiment, the controller comprises a touch screen, and the blowing and blocking device can automatically control blowing and blocking or manually control blowing and blocking based on the input received by the touch screen.

[0011] In one embodiment, the controller is connected with the temperature measuring device, the flow detection device, the blowing and blocking device, the gas source switching device, the pressure detection device and the alarm device in a wired or wireless mode.

[0012] In one embodiment, the blowing and blocking device comprises a solenoid valve for controlling the opening and closing of the gas delivery pipeline.

[0013] In one embodiment, the temperature measuring device further comprises a temperature display connected with the temperature measuring thermocouple, for displaying the temperature inside the porous brick in real time.

[0014] The application has the following beneficial effects:

[0015] The copper refining bottom blowing gas permeable brick anti-blocking system can timely detect various problems (such as blockage, insufficient gas pressure, abnormal internal temperature of the porous brick, etc.) of the copper refining bottom blowing gas permeable brick, and effectively solve the problem of the blockage of the gas permeable brick through the blowing and blocking device, avoid abnormal wear of the service life of the gas permeable brick, and make the bottom blowing gas permeable brick maintain stable output of the process flow in the whole furnace production, and avoid the situation that the copper refining process effect is affected or even production is impossible due to the blockage or excessive erosion of the bottom blowing gas permeable brick. BRIEF DESCRIPTION OF DRAWINGS

[0016] The embodiments of the application will be further described below with reference to the accompanying drawings, in which:

[0017] Figure 1 is a structural schematic view of a gas permeable brick of a copper refining bottom blowing gas permeable brick anti-blocking system according to an embodiment;

[0018] Figure 2 is a schematic view of part of components of a copper refining bottom blowing gas permeable brick anti-blocking system according to an embodiment; DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the application more clear, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the application and not to limit the application.

[0020] Figure 1 is a structural schematic view of a gas permeable brick of a copper refining bottom blowing gas permeable brick anti-blocking system according to an embodiment, Figure 2 is a schematic view of part of components of a copper refining bottom blowing gas permeable brick anti-blocking system according to an embodiment, and now combined with Figure 1 and Figure 2 The copper refining bottom blowing gas permeable brick anti-blocking system is described. The copper refining bottom blowing gas permeable brick anti-blocking system comprises a gas permeable brick, a locking device, a temperature measuring device, a gas input assembly, a process gas source, a backup gas source, a gas source switching device, a blowing and blocking device, a controller and an alarm device.

[0021] As Figure 1As shown, the air brick is installed on the furnace bottom, including a mother brick, a wear-resistant sleeve brick, and a porous brick, the mother brick wraps the wear-resistant sleeve brick, the wear-resistant sleeve brick wraps the porous brick, the porous brick is in the shape of a circular truncated cone, and the diameter of the lower bottom surface is greater than that of the upper bottom surface. The gas input assembly, the blowing and blocking device, and the gas source switching device are sequentially connected in gas communication through pipelines. The gas input assembly is located at the bottom of the porous brick, and includes a gas input pipe and a flow detection device in the gas input assembly, the flow detection device is used to detect whether the porous brick is blocked. The blowing and blocking device is used to eliminate the blockage by changing the gas flow when the porous brick is blocked. The locking device is used to fix the gas input assembly to the bottom of the porous brick. The temperature measuring device includes a temperature measuring thermocouple, which is inserted into the interior of the porous brick. When the air brick is excessively worn, it will cause abnormal internal temperature, which can be detected by the temperature measuring thermocouple. The gas source switching device is connected to the process gas source and the standby gas source, and is used to switch between the process gas source and the standby gas source. The process gas source and the standby gas source are respectively provided with pressure detection devices. The controller is connected with the temperature measuring device, the flow detection device (located in the gas input assembly), the blowing and blocking device, the gas source switching device, the pressure detection devices (located in the process gas source and the standby gas source), and the alarm device.

[0022] In one embodiment, the air brick needs to have good high-temperature resistance and thermal shock resistance, reduce oxidation and erosion of the air brick during the violent stirring of the copper liquid during oxidation and reduction, and have the characteristics of corrosion resistance, stable operation, good air permeability, long service life, etc. during the whole production process.

[0023] In one embodiment, the copper refining bottom blowing air brick anti-blocking system further includes a UPS power supply, which is used to supply power to the system in the event of abnormal power failure. The copper refining bottom blowing air brick anti-blocking system of the present application is powered by an alternating current power supply during normal operation. In order to protect the air brick in the event of abnormal power failure, when the alternating current power supply is suddenly disconnected, the UPS power supply in the system starts to supply power to the system, maintaining uninterrupted air supply to the bottom blowing air brick. When the alternating current power supply is restored to normal, the UPS power supply is in a charging standby state.

[0024] In one embodiment, the process gas source uses nitrogen gas, and the backup gas source uses compressed air. The pressure detection devices in the process gas source and the backup gas source detect the pressure in the process gas source and the backup gas source respectively, and send the detection results to the controller. When the pressure in the process gas source is low and the pressure in the backup gas source is normal, the controller can control the gas source switching device to switch the gas source to the backup gas source to implement protection, so as to realize automatic switching of the backup gas source when the pressure in the process gas source is low. After switching to the backup gas source, the gas in the backup gas source is used to implement bottom blowing through the gas input assembly, and if the pressure in the process gas source returns to normal, the controller can control the gas source switching device to switch the gas source back to the process gas source.

[0025] In one embodiment, the controller can receive temperature data from the temperature measuring device (i.e. the temperature measuring thermocouple therein), gas flow data from the flow detection device in the gas input assembly, process gas source pressure data from the pressure detection device in the process gas source, and backup gas source pressure data from the pressure detection device in the backup gas source, and instruct the alarm device to alarm when there is an abnormality in these data. The alarm device can alarm using an audible and visual method.

[0026] In one embodiment, the alarm device includes a touch screen, a multi-color beacon, and a buzzer, and alarms by different colored light and sound:

[0027] (1) The device is in normal state, the beacon is green and always on, and the buzzer does not work;

[0028] (2) The gas permeable brick is blocked, the touch screen displays "blocked", the beacon is green and always on, and the buzzer does not work;

[0029] (3) The acquisition signal is lost or out of range, the touch screen displays a fault and prompts to check the range; the beacon is green and always on, and the buzzer does not work;

[0030] (4) The pressure of the process gas source (nitrogen gas) is low, the green light flashes, and the buzzer does not work;

[0031] (5) The backup gas source (compressed air) replaces the process gas source, the yellow light is always on, and the buzzer does not work;

[0032] (6) When the AC power supply is suddenly disconnected, an emergency alarm is sounded, the red light flashes, and the buzzer buzzes;

[0033] (7) The gas permeable brick is excessively worn out, causing abnormal temperature of the brick core, the red light flashes, and the buzzer buzzes.

[0034] In one embodiment, when the flow detection device in the gas input assembly detects that the porous brick is blocked, the controller can instruct the blowout device to eliminate the blockage by changing the gas flow. In one embodiment, the controller includes a touch screen, through which the operator can implement two blowout reviving modes: an automatic control blowout reviving mode and a manual control blowout reviving mode. The automatic control blowout reviving mode is a cyclic, surge-type unblocking according to a system preset flow, pressure curve, and a porous brick state detection during the unblocking interval; if the unblocking is completed, the automatic blowout mode is cancelled; otherwise, the unblocking is repeated according to the reviving blowout curve. In one embodiment, in the automatic control blowout reviving mode, the unblocking is first performed at a high pressure and a large flow, then the unblocking is performed at a process pressure and a large flow after a delay set time, and then the unblocking is restored to a process flow to wait for the detection result; if the unblocking is not completed, the above-mentioned three different blowout flow and pressure are cycled and output. The manual control blowout reviving mode is that the operator implements the porous brick manual blowout by pressing the corresponding button of the touch screen according to the touch screen prompt. In the absence of blockage, the blowout device delivers gas according to the normal process flow.

[0035] In one embodiment, the controller is connected with the temperature measurement device, the flow detection device, the blowout device, the gas source switching device, the pressure detection device, and the alarm device through a wired or wireless manner.

[0036] In one embodiment, the blowout device includes an electromagnetic valve for controlling the opening and closing of the gas delivery pipeline.

[0037] In one embodiment, the temperature measurement device further includes a temperature display connected with the temperature measurement thermocouple, for displaying the temperature inside the porous brick in real time.

[0038] Reference herein to "various embodiments," "some embodiments," "one embodiment," or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. The appearances of the phrase "in various embodiments," "in some embodiments," "in one embodiment," or "in an embodiment" in various places in the specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. It will be appreciated that the particular features, structures, or characteristics described in one embodiment can be combined, in whole or in part, with one or more other embodiments without necessarily being limited to the combination described for the one embodiment. Expressions such as "based on," "applied to," "composed of," or "comprising of" as used herein are intended to be non-exclusive, i.e., to include the stated feature, structure, or characteristic, but not to exclude others. In the present application, some of the schematic operation steps are described in a certain order for the sake of clarity, but it can be understood by those skilled in the art that each of the operation steps is not essential, and some of the steps can be omitted or replaced by other steps. The operation steps also do not have to be executed sequentially as shown, but some of the operation steps can be executed in a different order or in parallel, as long as the new execution manner is not illogical or inoperable.

[0039] Some exemplary embodiments of the present application are described above, and it can be understood that the above embodiments are only used to explain the present application, and do not constitute a limitation on the protection scope of the present application. The features in these embodiments can be recombined in a suitable manner, and the schemes obtained thereby are still within the protection scope of the present application. Based on the above embodiments, all other embodiments obtained by those skilled in the art without making creative efforts, i.e., all modifications, equivalent replacements, and improvements, etc. made within the spirit and principles of the present application, are also within the protection scope of the present application.

Claims

1. A copper refining bottom blown gas brick prevention system, characterized by, The application relates to a transparent gas brick, locking device, temperature measuring device, gas input assembly, process gas source, standby gas source, gas source switching device, blowing and plugging device, controller, alarm device, wherein the transparent gas brick is installed on a furnace bottom and comprises a mother brick, a wear-resistant sleeve brick and a porous brick; the mother brick wraps the wear-resistant sleeve brick, the wear-resistant sleeve brick wraps the porous brick, the porous brick is in the shape of a circular truncated cone and the diameter of the lower bottom surface is larger than that of the upper bottom surface; the gas input assembly, blowing and plugging device and gas source switching device are sequentially connected in gas communication through pipelines; the gas input assembly is located at the bottom of the porous brick and comprises a gas input pipe and a flow detection device; the flow detection device is used for detecting whether the porous brick is blocked; the blowing and plugging device is used for eliminating the blockage by changing the gas flow when the porous brick is blocked; the locking device is used for fixing the gas input assembly to the bottom of the porous brick; the temperature measuring device comprises a temperature measuring thermocouple which is inserted into the interior of the porous brick; the gas source switching device is connected to the process gas source and the standby gas source and is used for switching between the process gas source and the standby gas source; the process gas source and the standby gas source are respectively provided with pressure detection devices; the controller is connected with the temperature measuring device, flow detection device, blowing and plugging device, gas source switching device, pressure detection device and alarm device. The application further comprises a UPS power supply which is used for supplying power to the system when abnormal power failure occurs.

2. The copper refining bottom-blown gas brick prevention system according to claim 1, characterized in that, The alarm device can use an audible and visual method to alarm.

3. The copper refining bottom-blown gas brick prevention system according to claim 1, characterized in that, The alarm device comprises a touch screen, a multi-color lighthouse and a buzzer.

4. The copper refining bottom-blown gas brick prevention system according to claim 3, characterized in that, The controller comprises a touch screen, and the blowing and plugging device can automatically control blowing and plugging or manually control blowing and plugging based on the input received by the touch screen.

5. The copper refining bottom-blown gas brick prevention system according to claim 1, wherein, The controller is connected with the temperature measuring device, flow detection device, blowing and plugging device, gas source switching device, pressure detection device and alarm device in a wired or wireless mode.

6. The copper refining bottom-blown gas brick prevention system of claim 1, wherein, The blowing and plugging device comprises a solenoid valve which is used for controlling the opening and closing of a gas conveying pipeline.

7. The copper refining bottom-blown tuyere anti-blocking system of claim 1, wherein, The temperature measuring device further comprises a temperature display which is connected with the temperature measuring thermocouple and is used for displaying the temperature in the interior of the porous brick in real time.

8. The copper refining bottom-blown gas brick prevention system of claim 1, wherein, ​

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