Feeding device for ferrovanadium smelting furnace, ferrovanadium smelting system and method

Abstract

The present invention discloses a feeding device for a ferrovanadium smelting furnace, a ferrovanadium smelting system and a method. The feeding device comprises: a feeding bin for containing ferrovanadium smelting raw materials; a feeding channel, one end of which is connected to the feeding bin, and the other end of which is used to cooperate with the smelting furnace; a first control bin for containing aluminum; a second control bin for containing vanadium oxide; a chute, one end of which is connected to the first control bin and the second control bin, and the other end of which is connected to the feeding channel. The present invention can achieve maximum recovery of vanadium resources and further improve the quality qualification rate of ferrovanadium products.

Description

Technical Field

[0001] The invention relates to the technical field of metallurgy, and in particular to a charging device for a ferrovanadium smelting furnace, a ferrovanadium smelting system and a method. Background Art

[0002] In the process of smelting ferrovanadium by the aluminothermic method, it is difficult to control both the vanadium content in the smelting slag and the product quality. It is necessary to reduce the vanadium content in the smelting slag to increase the vanadium resource yield, but it is difficult to ensure that the quality of the ferrovanadium products is qualified (for example, the aluminum content in the ferrovanadium product will be too high). At present, there is no better smelting control technology. Summary of the invention

[0003] The main purpose of the present invention is to provide a charging device for a ferrovanadium smelting furnace, a ferrovanadium smelting system and a method to solve the problem that it is difficult to control both the vanadium content in the smelting slag and the product quality.

[0004] According to one aspect of the present invention, a feeding device for a ferrovanadium smelting furnace is proposed, comprising: a feeding bin for containing ferrovanadium smelting raw materials; a feeding channel, one end of which is connected to the feeding bin, and the other end of which is used to cooperate with the smelting furnace; a first control bin for containing aluminum; a second control bin for containing vanadium oxide; a chute, one end of which is connected to the first control bin and the second control bin, and the other end of which is connected to the feeding channel.

[0005] According to one embodiment of the present invention, the feeding device also includes: two vibrating feeding parts, which are respectively arranged in the first control bin and the second control bin; two weighing parts, which are respectively arranged in the first control bin and the second control bin and are located below the vibrating feeding parts; a remote control part, which is communicatively connected with the vibrating feeding part and the weighing part, and is configured to control the vibrating feeding part to feed or stop feeding based on the expected feeding amount and the measurement value of the weighing part.

[0006] According to one embodiment of the present invention, the slide pipe is provided with a valve, and the remote control unit is configured to control the valve to open based on the fact that the detected value of the vanadium content in the smelting slag is not within a preset range.

[0007] According to one embodiment of the present invention, the remote control unit is configured as follows: based on the detection value of the vanadium content in the smelting slag being greater than the maximum value of a preset range, controlling the vibration unloading unit in the first control bin to unload materials; based on the detection value of the vanadium content in the smelting slag being less than the minimum value of the preset range, controlling the vibration unloading unit in the second control bin to unload materials.

[0008] According to one embodiment of the present invention, the other end of the slide pipe is welded to the feed channel.

[0009] According to another aspect of the present invention, a ferrovanadium smelting system is provided, comprising a smelting furnace and the charging device.

[0010] According to another aspect of the present invention, a ferrovanadium smelting method is proposed, comprising: adding ferrovanadium smelting raw materials into a smelting furnace for smelting; during the smelting process, sampling and detecting the vanadium content in the smelting slag; adding aluminum into the smelting furnace based on the vanadium content being greater than a maximum value of a preset range; and adding vanadium oxide into the smelting furnace based on the vanadium content being less than a minimum value of the preset range.

[0011] According to one embodiment of the present invention, the sampling and testing is performed multiple times during the smelting process, and the sampling and testing is performed once at a preset time interval.

[0012] According to one embodiment of the present invention, the vanadium oxide is flake vanadium.

[0013] According to the ferrovanadium smelting method of the embodiment of the present invention, during the smelting process, aluminum or vanadium oxide can be added for dynamic regulation according to the vanadium content in the smelting slag, ensuring that various indicators of the ferrovanadium smelting process are controlled, achieving maximum recovery of vanadium resources, and further improving the quality qualification rate of ferrovanadium products.

[0014] According to the feeding device for ferrovanadium smelting furnace according to the embodiment of the present invention, by adding structures such as a chute, a first control chamber and a second control chamber on the basis of the existing feeding equipment, dynamic control can be achieved by adding aluminum or vanadium oxide during the ferrovanadium smelting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 A schematic diagram of a ferrovanadium smelting system according to an embodiment of the present invention is shown, wherein a charging device for a ferrovanadium smelting furnace is shown;

[0017] Figure 2 A flow chart of a ferrovanadium smelting method according to an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0018] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the embodiments of the present invention are further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0019] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are for distinguishing two non-identical entities with the same name or non-identical parameters. It can be seen that "first" and "second" are only for the convenience of expression and should not be understood as limitations on the embodiments of the present invention. The subsequent embodiments will not explain this one by one.

[0020] Figure 1 FIG. 1 is a schematic diagram of a ferrovanadium smelting system 1 according to an embodiment of the present invention. Figure 1 As shown, the ferrovanadium smelting system 1 includes a smelting furnace 2 and a charging device 3 for the smelting furnace 2, and the smelting furnace 2 can be a tilting furnace. The charging device 3 includes: a charging bin 10, which is used to contain ferrovanadium smelting raw materials; a feeding channel 20, one end of which is connected to the charging bin 10, and the other end of which is used to cooperate with the smelting furnace 2; a first control bin 30, which is used to contain aluminum; a second control bin 32, which is used to contain vanadium oxide; and a chute 40, one end of which is connected to the first control bin 30 and the second control bin 32, and the other end of which is connected to the feeding channel 20.

[0021] According to the feeding device for ferrovanadium smelting furnace according to the embodiment of the present invention, by adding structures such as a chute, a first control chamber and a second control chamber on the basis of the existing feeding equipment, dynamic control can be achieved by adding aluminum or vanadium oxide during the ferrovanadium smelting process.

[0022] The feeding bin 10 may include two bins, one for containing lime and the other for containing a mixture containing vanadium oxide, aluminum and iron. The feed channel 20 may be arranged vertically, the chute 40 may be arranged obliquely, and the other end of the chute 40 may be connected to the middle and lower part of the feed channel 20. The other end of the chute 40 is welded to the feed channel 20 to ensure the sealing of the connection and prevent material leakage. A connecting hole is provided on the feed channel 20, and the other end of the chute 40 is welded to the connecting hole. The first control bin 30 may contain aluminum particles, and the second control bin 32 may contain vanadium flakes.

[0023] In an embodiment of the present invention, the feeding device 3 also includes: two vibrating feeding parts, which are respectively arranged in the first control bin 30 and the second control bin 32; two weighing parts 34, which are respectively arranged in the first control bin 30 and the second control bin 32, and are located below the vibrating feeding parts; a remote control part, which is communicated with the vibrating feeding part and the weighing part 34, and is configured to: control the vibrating feeding part to feed or stop feeding based on the expected feeding amount and the measurement value of the weighing part 34.

[0024] By setting the remote control unit, the quantitative addition of aluminum or vanadium oxide can be remotely controlled. The remote control unit controls the vibrating unloading unit to unload or stop unloading based on the expected amount of feed and the measured value of the weighing unit 34. When the measured value of the weighing unit 34 is less than the expected amount of feed, the remote control unit controls the vibrating unloading unit to continue unloading until the measured value of the weighing unit 34 is equal to the expected amount of feed, and the remote control unit controls the vibrating unloading unit to stop unloading. Thus, based on such a feedback control method, the automatic addition of the expected amount of aluminum or vanadium oxide is achieved. The weighing unit 34 can be tilted so that the material on the weighing unit 34 falls into the chute 40, and then the material enters the feed channel 20 along the chute 40, and then enters the smelting furnace 2. The weighing unit 34 can be set at the connection between the bottom of the first control bin 30 or the second control bin 32 and the chute 40. The weighing unit 34 can be an electronic scale.

[0025] The remote control unit can obtain the desired amount of aluminum or vanadium oxide, and the desired amount can be directly provided by the operator to the remote control unit. Alternatively, the operator can provide the remote control unit with a detection value of vanadium content in the smelting slag, and the remote control unit calculates the corresponding desired amount according to the detection value of vanadium content in the smelting slag.

[0026] In an embodiment of the present invention, the slide pipe 40 is provided with a valve 42, and the remote control unit is configured to control the valve 42 to open based on the fact that the detected value of the vanadium content in the smelting slag is not within a preset range.

[0027] When the vanadium content in the smelting slag is within the preset range, it is not necessary to add aluminum or vanadium oxide for regulation. At this time, the valve 42 can remain closed to prevent the materials in the first control bin 30 and the second control bin 32 from accidentally falling. When the vanadium content in the smelting slag is not within the preset range, it is necessary to add aluminum or vanadium oxide for regulation. At this time, the control valve 42 is opened to facilitate the material to enter the smelting furnace 2 through the chute 40. The preset range can be 1.0wt%-2.0wt%. The vanadium content can be TV (total vanadium) content.

[0028] In an embodiment of the present invention, the remote control unit is configured as follows: based on the detection value of the vanadium content in the smelting slag being greater than the maximum value of a preset range, controlling the vibrating unloading unit in the first control bin 30 to unload materials; based on the detection value of the vanadium content in the smelting slag being less than the minimum value of the preset range, controlling the vibrating unloading unit in the second control bin 32 to unload materials.

[0029] When the vanadium content detection value in the smelting slag is greater than the maximum value of the preset range, the vanadium content in the smelting slag is too high and the vanadium resource utilization rate is low. At this time, aluminum is added to promote the recovery of vanadium and reduce the vanadium content in the smelting slag. When the vanadium content detection value in the smelting slag is less than the minimum value of the preset range, the vanadium content in the smelting slag is too low, the aluminum content in the ferrovanadium product will be too high, and the quality of the ferrovanadium product is unqualified. At this time, vanadium oxide is added to promote the consumption of aluminum, reduce the aluminum content in the ferrovanadium product, and ensure the quality of the ferrovanadium product. The vanadium content detection value and the preset range can be provided to the remote control unit, and the remote control unit determines whether aluminum or vanadium oxide should be added for regulation, and automatically controls the corresponding vibrating unloading unit to unload, thereby enabling remote automatic control and saving manpower.

[0030] Figure 2 FIG. 2 is a flow chart showing a ferrovanadium smelting method according to an embodiment of the present invention. Figure 2 As shown, the ferrovanadium smelting method includes:

[0031] Step S1, adding ferrovanadium smelting raw materials into a smelting furnace for smelting;

[0032] Step S2, during the smelting process, sampling and detecting the vanadium content in the smelting slag;

[0033] Step S3, adding aluminum into the smelting furnace based on the vanadium content being greater than a maximum value within a preset range;

[0034] Step S4: based on the vanadium content being less than the minimum value of the preset range, adding vanadium oxide into the smelting furnace, wherein the vanadium oxide may be flake vanadium.

[0035] When the vanadium content is greater than the maximum value of the preset range, the vanadium content in the smelting slag is too high and the utilization rate of vanadium resources is low. At this time, aluminum is added to promote the recovery of vanadium and reduce the vanadium content in the smelting slag. When the vanadium content is less than the minimum value of the preset range, the vanadium content in the smelting slag is too low, the aluminum content in the ferrovanadium product will be too high, and the quality of the ferrovanadium product is unqualified. At this time, vanadium oxide is added to promote the consumption of aluminum, reduce the aluminum content in the ferrovanadium product, and ensure the quality of the ferrovanadium product. The preset range can be 1.0wt%-2.0wt%. The amount of aluminum or vanadium oxide added can be determined based on the vanadium content obtained by sampling and testing.

[0036] The sampling test can be performed multiple times during the smelting process, and the sampling test can be performed once every preset time, so as to perform dynamic regulation in the whole smelting process. The number of sampling tests can be determined according to the capacity of the smelting furnace and the amount of vanadium iron smelting raw materials. In some embodiments, sampling tests can be performed three times during the whole smelting process, and after each sampling test, corresponding aluminum addition regulation or vanadium oxide addition regulation is performed according to the detection value.

[0037] The smelting method of the present invention can be used in the refining period of ferrovanadium smelting. According to the TV content of the smelting slag, an appropriate amount of aluminum particles or flake vanadium is added to control the TV content in the smelting slag and the Al content in the product to meet the requirements. The smelting method of the present invention can reduce the generation of high-vanadium smelting slag, optimize the production organization, and greatly improve the first-time qualified rate of ferrovanadium products and the comprehensive yield of vanadium resources.

[0038] A person skilled in the art should understand that the discussion of any of the above embodiments is only exemplary and is not intended to imply that the scope of the disclosure of the embodiments of the present invention (including the claims) is limited to these examples; under the concept of the embodiments of the present invention, the technical features in the above embodiments or different embodiments can also be combined, and there are many other changes in different aspects of the embodiments of the present invention as described above, which are not provided in detail for the sake of simplicity. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present invention should be included in the protection scope of the embodiments of the present invention.

Claims

1. A charging device for a ferrovanadium smelting furnace, characterized in that: include: The charging silo is used to contain raw materials for ferrovanadium smelting; A feed channel, one end of which is connected to the charging bin, and the other end of which is used to cooperate with the smelting furnace; A first control chamber for containing aluminum; a second control chamber for containing vanadium oxide; a slide pipe, one end of which is connected to the first control bin and the second control bin, and the other end of which is connected to the feed channel; The feeding device also includes: Two vibrating material discharge parts are respectively arranged in the first control bin and the second control bin; Two weighing parts are respectively arranged in the first control bin and the second control bin and are located below the vibrating unloading part; The remote control unit is connected to the vibrating feeding unit and the weighing unit in communication, and is configured as follows: Controlling the vibrating unloading part to unload or stop unloading based on the expected feeding amount and the measured value of the weighing part; The remote control unit is configured as follows: Based on the detection value of the vanadium content in the smelting slag being greater than the maximum value of the preset range, controlling the vibrating unloading part in the first control bin to unload the material; Based on the fact that the detected value of the vanadium content in the smelting slag is less than the minimum value of the preset range, the vibrating unloading part in the second control bin is controlled to unload the material.

2. The device according to claim 1, characterized in that The slide pipe is provided with a valve, and the remote control unit is configured as follows: Based on the detection value of the vanadium content in the smelting slag being not within a preset range, the valve is controlled to open.

3. The device according to claim 1, characterized in that The preset range is 1.0wt%-2.0wt%.

4. The device according to claim 1, characterized in that The other end of the slide pipe is welded to the feed channel.

5. A ferrovanadium smelting system, characterized in that: It comprises a smelting furnace and a charging device according to any one of claims 1-4.

6. A ferrovanadium smelting method, characterized in that: The method is carried out using a feeding device as described in any one of claims 1 to 4, comprising: Adding ferrovanadium smelting raw materials into a smelting furnace for smelting; During the smelting process, samples are taken to test the vanadium content in the smelting slag.

7. The method according to claim 6, characterized in that The sampling and testing is performed multiple times during the smelting process, and once at preset time intervals.

8. The method according to claim 6, characterized in that The vanadium oxide is flake vanadium.

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