CN114053739A - Evaporation and deslagging device and method for refined vanadium-removing slurry - Google Patents
Evaporation and deslagging device and method for refined vanadium-removing slurry Download PDFInfo
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- CN114053739A CN114053739A CN202111446031.6A CN202111446031A CN114053739A CN 114053739 A CN114053739 A CN 114053739A CN 202111446031 A CN202111446031 A CN 202111446031A CN 114053739 A CN114053739 A CN 114053739A
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- 238000001704 evaporation Methods 0.000 title claims abstract description 98
- 230000008020 evaporation Effects 0.000 title claims abstract description 93
- 239000002002 slurry Substances 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000000428 dust Substances 0.000 claims abstract description 50
- 239000002893 slag Substances 0.000 claims abstract description 42
- 230000007246 mechanism Effects 0.000 claims abstract description 27
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 20
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000007599 discharging Methods 0.000 claims abstract description 16
- 239000002912 waste gas Substances 0.000 claims abstract description 9
- 238000007670 refining Methods 0.000 claims abstract description 5
- 238000009434 installation Methods 0.000 claims abstract description 4
- 239000013049 sediment Substances 0.000 claims abstract description 4
- 239000007789 gas Substances 0.000 claims description 29
- 238000001514 detection method Methods 0.000 claims description 20
- 230000008569 process Effects 0.000 claims description 13
- 238000003756 stirring Methods 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 11
- 230000001681 protective effect Effects 0.000 claims description 7
- 238000012544 monitoring process Methods 0.000 claims description 3
- 230000004044 response Effects 0.000 claims description 2
- 238000001914 filtration Methods 0.000 claims 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 9
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 230000001502 supplementing effect Effects 0.000 abstract description 2
- 229910001873 dinitrogen Inorganic materials 0.000 abstract 1
- 238000000605 extraction Methods 0.000 abstract 1
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 description 6
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 238000005660 chlorination reaction Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005272 metallurgy Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000004408 titanium dioxide Substances 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/30—Accessories for evaporators ; Constructional details thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/02—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area using chambers or hoods covering the area
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G23/00—Compounds of titanium
- C01G23/02—Halides of titanium
- C01G23/022—Titanium tetrachloride
- C01G23/024—Purification of tetrachloride
Abstract
The invention provides a refining vanadium-removing mud evaporation slag-discharging device, comprising: the slurry evaporation furnace comprises an evaporation furnace main body and a dust hood arranged below the evaporation furnace main body, wherein the contact surface of the evaporation furnace main body and the dust hood allows dust to pass through, the dust hood is connected to a waste gas treatment mechanism through a negative pressure suction pipeline, and a negative pressure generation mechanism is arranged on the negative pressure suction pipeline; and a receiving hopper selectively and hermetically mounted below the slurry evaporation furnace; the bottom of the slurry evaporation furnace is provided with a selectively opened feed opening, and the receiving hopper is communicated with the evaporation furnace main body through the opened feed opening in an installation state. The device is through setting up the suction hood, connecing the hopper in mud evaporation furnace below, handles vanadium-containing mud with the help of negative pressure dust extraction and nitrogen gas pressure supplementing device, has effectively avoided the dust to spill the environmental pollution who causes and has improved the security of arranging the sediment. The invention also provides a slag discharging method using the device.
Description
Technical Field
The invention belongs to the technical field of metallurgy and chemical industry, and particularly relates to an evaporation slag discharging device for refining vanadium-removing mud and a method for discharging slag by using the device.
Background
At present, titanium tetrachloride is mainly used as a raw material in industry to prepare titanium dioxide and titanium sponge by a chlorination method. The main production methods at home and abroad comprise boiling chlorination and molten salt chlorination, titanium tetrachloride is generated by the reaction of titanium dioxide-containing raw materials and chlorine at high temperature, and the titanium tetrachloride generated by the reaction also has more impurities, mainly VOCl3、FeCl3The titanium tetrachloride slurry is treated by a slurry evaporation furnace in part of titanium tetrachloride industry, so that the titanium tetrachloride can be recovered, and the resource waste is reduced; secondly, the effective components in the dust can be reused. The temperature of the ore pulp slag of the evaporation furnace is high, dust is easy to generate in the discharging process, and some high-temperature slag containing combustible media can be combusted in the discharging process. In the prior art, an open type slag discharging mode is usually adopted, dust and high-temperature slag combustion cannot be effectively avoided, and dust is easy to scatter and overflow to cause environmental pollution; and when slag blocks the slag discharge port, the slag needs to be dredged manually, and safety accidents are easy to happen during the operation of personnel.
Therefore, how to ensure the environmental protection and the safety of the evaporation and slag discharge process of the refined vanadium-removing mud becomes a problem to be solved urgently in the technical field of metallurgy and chemical industry.
BRIEF SUMMARY OF THE PRESENT DISCLOSURE
In order to solve the technical problem, the invention provides an evaporation deslagging device for refining vanadium-removing mud. The invention also provides an evaporation deslagging method for the refined vanadium-removing mud by using the deslagging device.
According to the present invention, there is provided an evaporation and slag discharge apparatus for refining vanadium-removing slurry, comprising:
the slurry evaporation furnace comprises an evaporation furnace main body and a dust hood arranged below the evaporation furnace main body, wherein the contact surface of the evaporation furnace main body and the dust hood allows dust to pass through, the dust hood is connected to the waste gas treatment mechanism through a negative pressure suction pipeline, and a negative pressure generation mechanism is arranged on the negative pressure suction pipeline; and
the receiving hopper is selectively and hermetically arranged below the slurry evaporation furnace;
the bottom of the slurry evaporation furnace is provided with a selectively opened feed opening, and the receiving hopper is communicated with the evaporation furnace main body through the opened feed opening in an installation state.
According to one embodiment of the invention, the contact surface is spherical.
According to one embodiment of the invention, a filter device is arranged on the negative pressure suction pipeline between the dust hood and the negative pressure generating mechanism.
According to one embodiment of the invention, a stirring device is arranged in the evaporation furnace main body.
According to one embodiment of the invention, the evaporation furnace main body is connected to a protective gas source through a gas inlet pipeline, and a first valve which can be selectively opened and closed is arranged on the gas inlet pipeline.
According to one embodiment of the invention, the evaporation furnace main body is connected to the exhaust gas treatment mechanism through an exhaust pipe, and the exhaust pipe is provided with a second valve which can be selectively opened and closed.
According to an embodiment of the invention, the slag discharge device further comprises a lifting device supporting the hopper and carrying the hopper towards or away from the slurry evaporation furnace.
According to one embodiment of the present invention, the evaporation furnace main body is provided with a liquid level detection device and a pressure detection device.
According to the invention, the evaporation deslagging method of the refined vanadium-removing mud is provided, the method uses the deslagging device to carry out deslagging, and comprises the following steps:
placing a receiving hopper on a lifting device, and driving the lifting device to carry the receiving hopper to move towards a slurry evaporation furnace so as to enable the receiving hopper to be in sealed connection with the slurry evaporation furnace;
step two, ensuring that the first valve and the second valve are closed, starting the negative pressure generating mechanism and the stirring device, and opening the feed opening for feeding;
step three, after the blanking is finished, closing the blanking port, closing the negative pressure generating mechanism and the stirring device, and opening a second valve to discharge residual waste gas; and
and fourthly, driving the lifting device to carry the receiving hopper to move away from the slurry evaporation furnace, and removing the receiving hopper to discharge slag.
According to one embodiment of the invention, the step two comprises monitoring the feeding process at least partially based on the detection result of the liquid level detection device, wherein, in response to the detection result showing that the feeding is blocked, the first valve is opened to introduce the protective gas so as to increase the pressure in the slurry evaporation furnace.
By adopting the technical scheme, the evaporation and deslagging device for the refined vanadium-removing mud is characterized in that the dust hood and the receiving hopper are arranged below the mud evaporation furnace, and the vanadium-containing mud is treated by means of the negative pressure dust collection device and the nitrogen pressure supplementing device, so that on one hand, smoke generated in the slag discharging process is absorbed by the negative pressure dust collection device, and the smoke is prevented from overflowing; on the other hand, the pressure in the evaporation furnace is supplemented by nitrogen, when the blanking port is blocked, the vanadium slag is discharged to the receiving hopper through the pressure, the environmental pollution caused by dust overflow is effectively avoided, and the slag discharging safety is improved. In addition, nitrogen is used as protective gas, so that the vanadium slag can be effectively prevented from burning in the slag discharge process.
Drawings
FIG. 1 is a schematic view of an evaporative slag removal device for refined vanadium removal sludge according to the present invention;
FIG. 2 is a flow chart of the evaporation and deslagging method of the refined vanadium removal mud according to the invention.
In the figure, the position of the upper end of the main shaft,
100 slurry evaporation furnace, 110 evaporation furnace body, 111 feed opening, 112 high temperature resistant valve, 120 dust hood, 121 first joint part, 130 negative pressure suction pipeline, 131 filter device, 140 negative pressure generating mechanism, 150 stirring device, 160 air inlet pipeline, 161 first valve, 170 exhaust pipeline, 171 second valve, 180 pressure detection device, 190 liquid level detection device, 200 material receiving hopper, 210 second joint part, 300 lifting device, 310 positioning mechanism.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Fig. 1 shows a schematic diagram of an evaporative slag removal device for refined vanadium removal slurry according to the present invention, which generally comprises a slurry evaporation furnace 100 and a receiving hopper 200, wherein the slurry evaporation furnace 100 may have an evaporation furnace main body 110 and a dust hood 120 disposed below the evaporation furnace main body 110, and the dust hood 120 is connected to an exhaust gas treatment mechanism (not shown) through a negative pressure suction pipe 130 provided with a negative pressure generating mechanism 140. The receiving hopper 200 can be selectively and hermetically installed below the slurry evaporation furnace 100, and the bottom of the slurry evaporation furnace 100 is provided with a selectively opened feed opening 111, wherein the receiving hopper 200 is arranged to be communicated with the evaporation furnace main body 110 through the opened feed opening 111 in an installation state, so that vanadium slag in the slurry evaporation furnace 100 falls into the receiving hopper 200 through the feed opening 111. In an embodiment of the present invention, the feeding opening 111 may be a pipe extending through the dust hood 120, and the pipe is preferably provided with a high temperature resistant valve 112, such as a ceramic ball valve, so as to open/close the feeding opening 111 by controlling the high temperature resistant valve 112. Specifically, the dust hood 120 is connected to the evaporation furnace main body 110, for example, in a manner of wrapping a portion of the evaporation furnace main body 110 or in other contact manner, and the contact surface of the dust hood 120 with the evaporation furnace main body 110 may be provided with, for example, a mesh-like structure or other similar structures to allow dust to pass through. Preferably, the contact surface may be a spherical surface with a concave portion facing the main body 110 of the evaporation furnace to obtain a larger contact area, so that the dust hood 120 can sufficiently absorb the dust in the main body 110 of the evaporation furnace. Based on the above structure, when the negative pressure generating mechanism 140 is turned on during the discharging process, negative pressure is generated in the dust hood 120 and dust generated during the discharging process is absorbed, and the dust is discharged to the exhaust gas treatment mechanism through the negative pressure suction pipe 130, thereby preventing the dust from overflowing.
In an embodiment of the present invention, a stirring device 150 may be provided in the evaporation furnace main body 110. This agitating unit 150 can set up to stir the vanadium sediment at the unloading in-process, and the vanadium sediment of being convenient for gets into through feed opening 111 smoothly and connects in the hopper 200. The negative pressure generating means 140 is preferably a centrifugal fan. At least one filter device 131 may be installed to the negative pressure suction duct 130 between the dust hood 120 and the negative pressure generating mechanism 140 to block most of dust in the exhaust gas from passing through. One skilled in the art may periodically clean the filter device 131 to ensure the patency of the negative pressure suction line 130. Subsequently, the exhaust gas containing a small amount of dust involved is discharged to the exhaust gas treatment means via the negative pressure suction duct 130. The waste gas treatment mechanism can be a leaching tower, and dust in gas can be removed after the discharged waste gas is leached. Alternatively, the exhaust gas containing dust can be treated in other ways by those skilled in the art.
As further shown in fig. 1, the main body 110 of the mud saver 100 may be connected via a gas inlet line 160 to a source of shielding gas, preferably a safe flame retardant gas such as nitrogen or an inert gas. The gas inlet pipe 160 may be provided with a first valve 161 selectively opened and closed to controllably supply the shielding gas into the main body 110 of the evaporation furnace. On one hand, the protection gas filled in the evaporation furnace main body 110 can effectively prevent the combustible medium in the vanadium slag/dust from burning; on the other hand, when the feed opening 111 is blocked by vanadium slag, the internal air pressure of the evaporation furnace main body 110 can be increased by introducing a large amount of protective gas, so that the vanadium slag blocked at the feed opening 111 is forced to fall into the receiving hopper 200, and manual dredging is not needed. The main body 110 may be further connected to an exhaust gas treatment mechanism through an exhaust duct 170, and a second valve 171 selectively opened and closed is disposed on the exhaust duct 170 to discharge a small amount of dust-containing exhaust gas remaining in the main body 110 after the slag discharge is completed. The air inlet duct 160 and the air outlet duct 170 are preferably disposed at the upper portion of the evaporation furnace main body 110, and those skilled in the art can select other suitable positions according to actual conditions. The evaporation furnace main body 110 may further be provided with an operation parameter detection device such as a liquid level detection device 190, a pressure detection device 180, and the like, for monitoring the operation state of the evaporation furnace main body 110 in real time.
The slag discharging device according to the present invention may further comprise a lifting device 300, such as, but not limited to, a hydraulic lifting device 300. The lifting device 300 may be used to support the hopper 200 and carry the hopper 200 toward or away from the mud-fired furnace 100. In the embodiment shown in fig. 1, the lifting device 300 can carry the hopper 200 to move in the up-down direction in the figure to engage or disengage the hopper 200 with the mud-evaporating furnace 100. The present invention preferably provides a first engagement element 121 and a second engagement element 210 which are respectively arranged on the slurry evaporation furnace 100 and the receiving hopper 200 and are matched with each other to realize the sealing connection of the receiving hopper 200 and the slurry evaporation furnace 100, wherein the first engagement element 121 and the second engagement element 210 are preferably matched with each other to form a concave-convex flange. Thus, the receiving hopper 200 can be moved downward relative to the slurry evaporation furnace 100 to achieve the sealing connection and disconnection between the two. Preferably, the lifting device 300 may be provided with a positioning mechanism 310 such that the second engagement portion of the hopper 200 is properly aligned with the first engagement portion of the mud-evaporating furnace 100 when the hopper is positioned on the lifting device 300. Alternatively, the connection of the receiving hopper 200 to the mud evaporating furnace 100 may be achieved in other ways by those skilled in the art. The sealed connection between the receiving hopper 200 and the slurry evaporation furnace 100 can effectively prevent a small amount of residual dust which is not absorbed by the dust hood 120, such as dust mixed into vanadium slag entering the receiving hopper 200 from the feed opening 111 from overflowing.
FIG. 2 shows a flow chart of the evaporative slag removal method for the refined vanadium removal slurry according to the present invention, which uses the slag removal device as described above, and generally comprises the following steps:
firstly, the receiving hopper 200 is placed on the lifting device 300, and the lifting device 300 is driven to carry the receiving hopper 200 to move towards the slurry evaporation furnace 100, so that the receiving hopper 200 is hermetically connected with the slurry evaporation furnace 100. Wherein an operator may use a mechanical device such as a forklift, robotic arm, etc. to place the receiving hopper 200 on the lifting device 300 and determine the specific location of the receiving hopper 200 on the lifting device 300 via the positioning mechanism 310.
And step two, ensuring that the first valve 161 and the second valve 171 are closed, starting the negative pressure generating mechanism 140 and the stirring device 150, and opening the feed opening 111 for feeding. In the negative pressure environment, the dust lifted by stirring the vanadium slag is sucked into the dust hood 120 and then discharged through the negative pressure suction pipe 130. Meanwhile, vanadium slag enters the receiving hopper 200 through the feed opening 111. In the blanking process, the blanking process can be monitored through the detection result of the liquid level detection device 190. For example, when the liquid level is lowered from the original level value L1 to the target level value L2(L2 may be set to 0), it may be determined that the blanking is completed.
And step three, after the blanking is finished, closing the blanking port 111, closing the negative pressure generating mechanism 140 and the stirring device 150, and opening the second valve 171 to discharge the residual waste gas.
And step four, driving the lifting device 300 to carry the receiving hopper 200 to move away from the slurry evaporation furnace 100, and removing the receiving hopper 200 to discharge slag. Wherein, the receiving hopper 200 can be transported to a vanadium slag stockpiling room for standby.
The first step to the fourth step describe a slag discharge process, and repeated slag discharge can be realized by repeatedly executing the steps. Preferably, when the detection result of the liquid level detection device 190 indicates that the discharging is blocked, for example, the liquid level keeps the original liquid level value L1 all the time or is only slightly reduced after a period of time, indicating that the discharging opening 111 is blocked, the first valve 161 may be opened to introduce the shielding gas into the slurry evaporation furnace 100, so as to increase the pressure in the slurry evaporation furnace 100, and force the vanadium slag blocked at the discharging opening 111 to fall into the receiving hopper 200. In the embodiment of the invention, the pressure in the slurry evaporation furnace 100 can be increased to 100-400 kPa by introducing the protective gas, and the pressure detection device 180 can be used for detecting the pressure in the slurry evaporation furnace 100 in real time.
The device and the method for evaporating and deslagging the refined vanadium-removing mud are adopted for deslagging, the high-temperature waste gas containing dust can be effectively prevented from overflowing, manual dredging of the feed opening 111 is not needed, automatic operation can be realized through remote control in the deslagging process, and both environment friendliness and safety can be guaranteed.
The above examples only express embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The utility model provides a refine and remove evaporation of vanadium mud sediment device which characterized in that contains:
the slurry evaporation furnace comprises an evaporation furnace main body and a dust hood arranged below the evaporation furnace main body, wherein the contact surface of the evaporation furnace main body and the dust hood allows dust to pass through, the dust hood is connected to a waste gas treatment mechanism through a negative pressure suction pipeline, and a negative pressure generation mechanism is arranged on the negative pressure suction pipeline; and
a receiving hopper selectively sealingly mounted to the underside of the slurry evaporator furnace;
the bottom of the slurry evaporation furnace is provided with a selectively opened feed opening, and the receiving hopper is communicated with the evaporation furnace main body through the opened feed opening in the installation state.
2. The evaporation and slag removal device for the refined vanadium-removing mud of claim 1, wherein the contact surface is a spherical surface.
3. The evaporation and slag removal device for the refined vanadium-removing mud as claimed in claim 1, wherein a filtering device is arranged on the negative pressure suction pipeline between the dust hood and the negative pressure generating mechanism.
4. The evaporation and slag removal device for the refined vanadium-removing mud as claimed in claim 1, wherein a stirring device is arranged in the main body of the evaporation furnace.
5. The refined vanadium-removing mud evaporation slag-discharging device as claimed in claim 1, wherein the evaporation furnace main body is connected to a protective gas source through a gas inlet pipeline, and a first valve which can be selectively opened and closed is arranged on the gas inlet pipeline.
6. The device for refining vanadium-removing mud, evaporating and deslagging according to claim 1, wherein the evaporation furnace main body is connected to the exhaust gas treatment mechanism through an exhaust pipeline, and a second valve which can be selectively opened and closed is arranged on the exhaust pipeline.
7. The apparatus of claim 1, further comprising a lifting device for supporting the receiving hopper and carrying the receiving hopper to move toward or away from the slurry evaporator.
8. The evaporation and slag discharge device for the refined vanadium-removing mud of claim 1, wherein the evaporation furnace main body is provided with a liquid level detection device and a pressure detection device.
9. An evaporation deslagging method for refined vanadium-removing mud, which is characterized in that deslagging is carried out by using the deslagging device of any one of claims 1-8, and comprises the following steps:
placing a receiving hopper on a lifting device, and driving the lifting device to carry the receiving hopper to move towards a slurry evaporation furnace so as to enable the receiving hopper to be in sealed connection with the slurry evaporation furnace;
step two, ensuring that the first valve and the second valve are closed, starting the negative pressure generating mechanism and the stirring device, and opening the feed opening for feeding;
step three, after the blanking is finished, closing the blanking port, closing the negative pressure generating mechanism and the stirring device, and opening the second valve to discharge residual waste gas; and
driving the lifting device to carry the receiving hopper to move away from the slurry evaporation furnace, and removing the receiving hopper to discharge slag.
10. The method of claim 9, wherein the step two comprises monitoring the feeding process at least partially based on the detection result of the liquid level detection device, and wherein in response to the detection result indicating that the feeding is blocked, the first valve is opened to introduce the protective gas to increase the pressure in the slurry evaporation furnace.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115821067A (en) * | 2022-11-30 | 2023-03-21 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for producing vanadium slag by refining vanadium-removing slurry and ore pulp evaporation furnace |
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