CN210314439U - A kind of stone coal vanadium ore maturation production equipment - Google Patents
A kind of stone coal vanadium ore maturation production equipment Download PDFInfo
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- CN210314439U CN210314439U CN201921215291.0U CN201921215291U CN210314439U CN 210314439 U CN210314439 U CN 210314439U CN 201921215291 U CN201921215291 U CN 201921215291U CN 210314439 U CN210314439 U CN 210314439U
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- 239000003245 coal Substances 0.000 title claims abstract description 74
- 239000004575 stone Substances 0.000 title claims abstract description 74
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 49
- 229910052720 vanadium Inorganic materials 0.000 title claims description 39
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 title claims description 39
- 230000035800 maturation Effects 0.000 title claims 11
- 238000003756 stirring Methods 0.000 claims abstract description 139
- 239000007788 liquid Substances 0.000 claims abstract description 65
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 41
- 238000002156 mixing Methods 0.000 claims abstract description 32
- 239000000463 material Substances 0.000 claims abstract description 31
- 238000010438 heat treatment Methods 0.000 claims abstract description 27
- 239000002253 acid Substances 0.000 claims abstract description 23
- 239000003595 mist Substances 0.000 claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000000428 dust Substances 0.000 claims abstract description 18
- 239000002002 slurry Substances 0.000 claims description 26
- 238000010521 absorption reaction Methods 0.000 claims description 15
- 238000009826 distribution Methods 0.000 claims description 12
- 230000008878 coupling Effects 0.000 claims description 10
- 238000010168 coupling process Methods 0.000 claims description 10
- 238000005859 coupling reaction Methods 0.000 claims description 10
- 239000000945 filler Substances 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 21
- 230000008569 process Effects 0.000 abstract description 12
- 238000010924 continuous production Methods 0.000 abstract description 3
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 238000001723 curing Methods 0.000 description 37
- 239000007789 gas Substances 0.000 description 15
- 238000012856 packing Methods 0.000 description 11
- 238000002386 leaching Methods 0.000 description 10
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- 238000006243 chemical reaction Methods 0.000 description 3
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- 239000004744 fabric Substances 0.000 description 3
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- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
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- 239000002994 raw material Substances 0.000 description 2
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- 241000894006 Bacteria Species 0.000 description 1
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- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 229910001579 aluminosilicate mineral Inorganic materials 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
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- 238000012840 feeding operation Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
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- 229910052710 silicon Inorganic materials 0.000 description 1
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- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 235000011149 sulphuric acid Nutrition 0.000 description 1
- 239000001117 sulphuric acid Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Manufacture And Refinement Of Metals (AREA)
Abstract
The utility model relates to a stone coal navajoite curing technical field discloses a stone coal navajoite curing production facility, and it includes: the heating and mixing assembly comprises a box body and a stirring unit; the slurrying assembly comprises a material liquid tank and a slurrying and stirring unit, the material liquid tank is connected with the box body to enable clinker to enter the material liquid tank, a liquid inlet is further formed in the material liquid tank, and the slurrying and stirring unit is configured to stir the clinker and liquid in the material liquid tank; a negative pressure collection assembly comprising at least two gas collection hoods configured to recover acid mist and/or dust. The utility model provides a stone coal navajoite curing production facility has realized the continuous production process of mixing, heating and broken collection of stone coal and concentrated sulfuric acid or stone coal, concentrated sulfuric acid and water through heating mixing subassembly and pulp subassembly, can also realize the collection of produced acid mist and/or dust in the production process through the negative pressure collection subassembly, improves production efficiency, reduces environmental pollution.
Description
Technical Field
The utility model relates to a stone coal navajoite curing technical field especially relates to a stone coal navajoite curing production facility.
Background
Vanadium is a strategic metal and is widely applied in the fields of steel, metallurgy, chemical industry, new energy and the like. The stone coal is black carbonaceous shale, which is formed by piling up the dead low-grade bacteria and algae under the reducing condition. The stone coal usually contains vanadium except silicon, and the stone coal vanadium ore accounts for 30 percent of the total production raw materials of vanadium products in China, and is an important production raw material of vanadium products in China.
The existing method for extracting vanadium from stone coal vanadium ore mainly comprises two main types: roasting and acid leaching. The traditional vanadium extraction method of stone coal vanadium ore is a sodium roasting method, the production process of the method is simple, the process technology is mature, but the problems of low vanadium resource recovery rate, large three-waste discharge capacity and the like exist, and the existing national environmental protection discharge standard is difficult to meet. The acid leaching method mainly comprises a direct acid leaching method and a sulfuric acid curing method, and has the advantages of energy saving, cleanness, avoidance of the problems of a large amount of waste gas and the like generated by the traditional roasting method, and good application prospect. The direct acid leaching method is only suitable for treating weathered stone coal, and the vanadium extraction difficulty is high for primary stone coal mainly containing mica aluminosilicate minerals, and the sulfuric acid curing method can effectively treat the stone coal and improve the leaching rate of vanadium.
Chinese patent CN105483398A proposes a vanadium-containing mineral curing vanadium extraction method, firstly, stone coal is crushed and ground to 5mm, 8% of water, 1% of phosphoric acid and 16% of concentrated sulfuric acid are respectively added, curing is carried out for 24h at 105 ℃, the clinker liquid-solid ratio is 2:1, leaching is carried out for 2h, and the leaching rate of vanadium is more than 85%. Chinese patent CN102912123A proposes a method for decomposing stone coal vanadium ore by sulfuric acid curing, firstly grinding stone coal to-74 μm, then adding 3% -8% of water, 3% -8% of sodium sulfate and 15% -30% of concentrated sulfuric acid, finally utilizing concentrated sulfuric acid to release heat when meeting water, preserving heat and curing for 12-48 h, leaching clinker at 85-100 ℃ for 2-10 h, wherein the liquid-solid ratio of the clinker is 1.5:1-3:1, and the leaching rate of vanadium is more than 80%.
Chinese patent CN205368457U provides a concentrated sulfuric acid curing method draws portable compounding cloth system of mineral composition, including dry material conveying part, portable compounding portion and water, sour access portion, utilize current equipment, the technique is through the combination, processing, reform transform in order to provide one kind and carry out the transfer of material in certain space, the batching, mix, and the portable compounding cloth system of timely cloth in the compounding, the time of mixture exposure in the atmosphere has been shortened, make the hydration heat of concentrated sulfuric acid fully utilized, it is even to have the stirring material, advantages such as heat preservation transport, the control problem of curing process is not solved.
At present, the sulfuric acid curing process is intermittent operation, the production process conditions are difficult to control, and the production efficiency is low. But also can not effectively collect acid mist generated in the curing process of the stone coal and the sulfuric acid, thereby not only wasting the sulfuric acid, but also being easy to pollute the environment. Therefore, there is a need for a stone coal curing apparatus to solve the above problems.
SUMMERY OF THE UTILITY MODEL
Based on above, an object of the utility model is to provide a stone coal navajoite curing production facility can effectively collect the acid mist that stone coal and sulphuric acid curing process produced.
In order to achieve the purpose, the utility model adopts the following technical proposal:
a stone coal vanadium ore curing production equipment comprises:
the heating and mixing assembly comprises a box body and a stirring unit positioned in the box body, wherein the stirring unit is configured to mix, heat and crush stone coal and concentrated sulfuric acid or the stone coal, the concentrated sulfuric acid and water into clinker and extrude the clinker;
the slurrying assembly comprises a material liquid tank and a slurrying and stirring unit, the material liquid tank is connected with the box body to enable the clinker to enter the material liquid tank, a liquid inlet for adding liquid is further formed in the material liquid tank, and the slurrying and stirring unit is configured to stir the clinker and the liquid in the material liquid tank;
a negative pressure collection assembly comprising at least two gas collection hoods, wherein one of the gas collection hoods is disposed opposite the slurrying assembly and one of the gas collection hoods is disposed opposite the tank, the gas collection hoods configured to recover acid mist and/or dust.
As an optimal selection scheme of stone coal navajoite curing production facility, be equipped with the hybrid chamber and the heating chamber that each other do not communicate in the box, the heating chamber is followed hybrid chamber circumference distributes, be equipped with on the box with first charge door, second charge door, third charge door and the gas vent of hybrid chamber intercommunication, still be equipped with on the box with the add inlet and the discharge port of heating chamber intercommunication, add the inlet with the discharge port is configured into respectively and adds and discharge heat medium is situated between.
As an optimal scheme of stone coal navajoite curing production facility, first charge door, the second charge door, the third charge door reaches the gas vent all is located the upper surface of box, the gas collecting channel is located the top of box just is just right first charge door, the second charge door, the third charge door reaches the gas vent sets up.
As an optimal scheme of stone coal navajoite curing production facility, the stirring unit includes stirring driving piece, shaft coupling, mixing bearing and stirring piece, mixing bearing is fixed in on the box and the cover is located the stirring piece is outside, the stirring driving piece passes through the shaft coupling with the stirring piece is connected and is configured into the drive the stirring piece rotates, the stirring piece is configured into and can stir thick liquids and grog in the mixing chamber.
As a preferred scheme of stone coal navajoite curing production facility, the number of stirring piece is two, two the stirring piece sets up side by side, slurrying stirring unit still includes the stirring gear, the number of stirring gear is two, two stirring gear intermeshing and every stirring gear all is connected with a stirring piece, one of them both ends of stirring gear respectively with stirring piece with the coupling joint.
As a preferred scheme of stone coal navajoite curing production equipment, the junction of stirring piece and box is equipped with sealed box, sealed box locates the both sides of box.
As an optimal selection scheme of stone coal navajoite curing production facility, the stirring unit still includes driving piece, screw rod bearing, screw rod sleeve and screw rod, the screw rod bearing is located the one end of screw rod just the screw rod is established in the screw rod bearing, the bearing sleeve cover is located the other end of screw rod, the driving piece is configured as the drive the screw rod rotates, the telescopic one end of screw rod with the hybrid chamber intercommunication, the other end stretch out the box and with material cistern intercommunication.
As a preferable scheme of the stone coal vanadium ore curing production equipment, the slurry stirring unit comprises a slurry driving member and a slurry stirring member, wherein the slurry driving member is configured to drive the slurry stirring member to stir the clinker and the liquid in the material liquid tank.
As an optimal selection scheme of stone coal navajoite curing production facility, the subassembly is collected to the negative pressure still includes absorption tower and draught fan, supreme first distribution board, first filler, first nozzle, second distribution board, second filler, second nozzle and the defroster of being equipped with in proper order is down followed to the absorption tower, first distribution board with the gas collecting channel intercommunication, the absorption tower bottom is equipped with the circulation groove, first nozzle with the second nozzle all with the circulation groove intercommunication, the draught fan with the defroster intercommunication, the defroster is configured to hold back liquid in the absorption tower and pass through the draught fan is discharged.
As a preferred scheme of stone coal navajoite curing production facility, the negative pressure collection subassembly still includes the circulating pump, the one end of circulating pump with the circulation groove intercommunication, the other end simultaneously with first nozzle with the second nozzle intercommunication.
A stone coal vanadium ore curing production method, which adopts the stone coal vanadium ore curing production equipment according to any one of the above claims, and comprises the following steps:
step one, adding stone coal and concentrated sulfuric acid into the box body, or adding the stone coal, the concentrated sulfuric acid and water into the box body, stirring the stone coal, the concentrated sulfuric acid and the water by the stirring unit to mix and react the stone coal, the concentrated sulfuric acid and the water to form clinker, and extruding the clinker into the clinker groove by the stirring unit;
adding liquid at the liquid inlet, and stirring the clinker and the liquid by the slurrying and stirring unit;
in the first step and the second step, the gas collecting hood which is arranged opposite to the box body and the slurrying assembly collects acid mist and/or dust in real time.
The utility model has the advantages that: the utility model provides a stone coal navajoite curing production facility has realized the continuous production process of mixing, heating and broken collection of stone coal and concentrated sulfuric acid or stone coal, concentrated sulfuric acid and water through heating mixing subassembly and pulp subassembly, can also realize the collection of produced acid mist and/or dust in the production process through the negative pressure collection subassembly, improves production efficiency, reduces environmental pollution.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
FIG. 1 is a schematic diagram of stone coal vanadium ore curing production equipment provided by the embodiment of the invention;
fig. 2 is a schematic diagram of a heating and mixing assembly of a stone coal vanadium ore curing production device provided by the embodiment of the invention.
In the figure:
1-box, 11-mixing chamber, 12-heating chamber, 13-first feeding port, 14-second feeding port, 15-third feeding port, 16-exhaust port, 17-feeding port, 18-exhaust port, 19-thermocouple, 21-stirring driving piece, 211-stirring motor, 212-stirring speed reducer, 22-coupler, 23-stirring bearing, 24-stirring piece, 25-stirring gear, 26-driving piece, 261-motor, 262-speed reducer, 27-screw bearing, 28-screw sleeve, 29-screw, 291-screw, 31-material liquid groove, 311-liquid inlet, 312-pulp discharging port, 321-pulping driving piece, 3211-pulping motor, 3212-pulping speed reducer, 322-slurrying stirring piece, 41-gas collecting hood, 42-absorption tower, 43-induced draft fan, 44-first distribution plate, 45-first filler, 46-first nozzle, 47-second distribution plate, 48-second filler, 49-second nozzle, 410-demister, 411-circulating tank, 412-circulating pump, 5-sealed box body and 6-base.
Detailed Description
In order to make the technical problems, technical solutions and technical effects achieved by the present invention more clear, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The embodiment provides a stone coal vanadium ore curing production device, as shown in fig. 1 and fig. 2, the device includes a heating and mixing assembly, a slurrying assembly and a negative pressure collecting assembly, the heating and mixing assembly includes a box body 1 and a stirring unit located in the box body 1, the stirring unit is configured to mix stone coal and concentrated sulfuric acid or stone coal, concentrated sulfuric acid and water to form slurry, and the slurry is heated and reacted by the stirring unit to form clinker and extrude the clinker. The slurrying component comprises a material liquid tank 31 and a slurrying and stirring unit, wherein the material liquid tank 31 is connected with the box body 1 to enable clinker to enter the material liquid tank 31, a liquid inlet 311 for adding liquid and a slurry discharging port 312 for discharging slurry are further arranged on the material liquid tank 31, and the slurrying and stirring unit is configured to stir the clinker and the liquid in the material liquid tank 31 to enable the clinker and the liquid to be mixed into slurry. The negative pressure collection assembly comprises at least two gas-collecting hoods 41, wherein one gas-collecting hood 41 is arranged opposite to the slurrying assembly, one gas-collecting hood 41 is arranged opposite to the box body 1, and the gas-collecting hoods 41 are configured to recover acid mist and/or dust.
The stone coal navajoite curing production facility that this embodiment provided has realized the continuous production process that stone coal and concentrated sulfuric acid or the mixture, heating and the breakage of stone coal, concentrated sulfuric acid and water were collected through heating mixing assembly and slurrying subassembly, can also realize the collection to the produced acid mist and/or dust in the production process through the negative pressure collection subassembly, improves production efficiency, reduces environmental pollution.
The mixing chamber 11 and the heating chamber 12 which are not communicated with each other are arranged in the box body 1 of the embodiment, as shown in fig. 2, the heating chambers 12 are distributed along the circumference of the mixing chamber 11, the box body 1 is provided with a first feeding port 13, a second feeding port 14, a third feeding port 15 and an exhaust port 16 which are communicated with the mixing chamber 11, as shown in fig. 1, the box body 1 is further provided with an inlet 17 and an outlet 18 which are communicated with the heating chamber 12, and the inlet 17 and the outlet 18 are respectively configured to add and discharge a heat medium. The heating medium is fed in through the feed 17, enters the heating chamber 12 and can be discharged through the discharge 18. The heat medium may be steam or heat transfer oil, and this embodiment is not particularly limited thereto. If the heat conduction oil is adopted as the heat conduction medium, the heat conduction oil is heated in an electric heating mode. In addition, a thermocouple 19 is further provided on the first tank 1, and one end of the thermocouple 19 extends into the mixing chamber 11 and is configured to detect the temperature of the mixing chamber 11.
Further, as shown in fig. 1, the first charging hole 13 of the present embodiment is used for adding stone coal, the second charging hole 14 is used for adding concentrated sulfuric acid, the third charging hole 15 is used for adding water, the exhaust port 16 is used for exhausting gas in the mixing chamber 11, the first charging hole 13, the second charging hole 14, the third charging hole 15 and the exhaust port 16 are all located on the upper surface of the box body 1, and the gas collecting hood 41 is located above the box body 1 and is disposed over the first charging hole 13, the second charging hole 14, the third charging hole 15 and the exhaust port 16.
The stirring unit of this embodiment includes a stirring driving member 21, a coupling 22, a stirring bearing 23 and a stirring member 24, as shown in fig. 2, the stirring bearing 23 is fixed on the box 1 and is sleeved outside the stirring member 24, the stirring driving member 21 of this embodiment is a stirring motor 211 and a stirring speed reducer 212, the stirring driving member 21 is connected with the stirring member 24 through the coupling 22 and is configured to drive the stirring member 24 to rotate, and the stirring member 24 is configured to be capable of stirring the slurry and the clinker in the mixing chamber 11.
Specifically, the stirring members 24 of the present embodiment are Z-shaped stirring members, and the number of the stirring members 24 is two, and the two stirring members 24 are arranged in parallel. Of course, in other embodiments of the present invention, the stirring members 24 may also be sigma-shaped stirring members or stirring members 24 with other shapes, the number of the stirring members 24 is not limited to two in this embodiment, and may also be other numbers, and the shape of the stirring members 24 is specifically set according to actual needs.
Further, as shown in fig. 1 and fig. 2, the slurry stirring unit of this embodiment further includes two stirring gears 25, the number of the stirring gears 25 is two, the two stirring gears 25 are meshed with each other, each stirring gear 25 is connected to one stirring member 24, two ends of one stirring gear 25 are respectively connected to the stirring member 24 and the coupling 22, the two stirring teeth 25 of this embodiment have different sizes, and this arrangement can make the rotation speed and the rotation direction of each stirring member 24 different, and can sufficiently knead, and mix the viscous slurry mixture, and accelerate the aging reaction to make it become clinker. Of course, in other embodiments of the present invention, if the number of the stirring members 24 is at least two, the stirring gear 25 may not be provided at this time, but the number of the stirring driving members 21 is at least two, each stirring driving member 21 is connected to one stirring member 24, that is, one stirring driving member 21 drives one stirring member 24 to rotate, the rotation speed and/or the rotation direction of at least two stirring members 24 may be different, and under the stirring action of the stirring members 24, the thick slurry mixture can be sufficiently kneaded, kneaded and uniformly mixed, so as to accelerate the curing reaction, and the mixture becomes clinker.
In order to avoid the overflow of acid mist, dust, stone coal, water and sulfuric acid in the box body 1, a sealing box body 5 is arranged at the joint of the stirring piece 24 and the box body 1, as shown in fig. 2, the sealing box bodies 5 of the present embodiment are arranged at two sides of the box body 1, the number of the sealing box bodies 5 of the present embodiment is four, two of the sealing box bodies 5 are arranged at one end of the box body 1, and the other two sealing box bodies 5 are arranged at the other end of the box body 1.
The stirring unit of the present embodiment further includes a driving member 26, a screw bearing 27, a screw sleeve 28 and a screw 29, as shown in fig. 1 and fig. 2, the screw bearing 27 is disposed at one end of the screw 29, the screw 29 is disposed in the screw bearing 27, the bearing sleeve is disposed at the other end of the screw 29, a spiral piece 291 is further disposed on the screw 29, the driving member 26 is configured to drive the screw 29 to rotate, one end of the screw sleeve 28 is communicated with the mixing chamber, and the other end of the screw sleeve 28 extends out of the tank 1 and is communicated with the liquid tank 31. The driving member 26 of the present embodiment includes a motor 261 and a speed reducer 262, and the screw 29 may be one screw 29, two screws 29, or three screws 29, but the present embodiment is not particularly limited thereto, and preferably includes two screws 29 and three screws 29. The number of the screws 29 is increased, the larger the contact area between the screws 29 and the slurry and the clinker is, the better the extrusion effect is, and the lump materials can be rapidly crushed and extruded. When the clinker is not required to be extruded, the control screw 29 rotates reversely, and the slurry and the clinker rotate in the mixing cavity 11, so that the kneading effect can be enhanced. When the clinker is required to be extruded, the screw 29 is controlled to rotate in the forward direction, and the clinker is extruded by the screw 29 and the spiral piece 291.
The stone coal vanadium ore curing production equipment of the embodiment further comprises a base 6, as shown in fig. 1, the box body 1 and the driving piece 26 are both arranged on the base 6, and the added base 6 enables the whole stone coal vanadium ore curing production equipment to be more stable and safer in the operation process.
The slurrying-stirring unit of the present embodiment comprises a slurrying driving member 321 and a slurrying stirring member 322, as shown in fig. 1, the slurrying driving member 321 is configured to drive the slurrying stirring member 322 to stir the clinker and the liquid in the clinker tank 31. The slurrying driving member 321 of the embodiment includes a slurrying motor 3211 and a slurrying speed reducer 3212, and clinker discharged from the heating and mixing assembly is added with water in the material liquid tank 31 for pulping, so that waste heat of the clinker can be fully utilized, the temperature of the slurrying process is increased, and leaching of part of vanadium is realized. The clinker discharged by the heating and mixing component in a spiral way is mostly fine powder, and part of coarse materials can be dissolved through the pulping process. The slurried material can be directly conveyed through a pipeline and a pump, so that the problem of dust generated in the powder conveying process is avoided, and continuous operation is realized.
It should be noted that, in the present embodiment, both the box body 1 and the material liquid tank 31 are closed devices, only the exhaust port 16 on the heating and mixing assembly is left during operation, and acid mist and/or dust may be generated during both the feeding operation and the operation, so that the acid mist and/or dust is collected to realize clean production.
As shown in fig. 1, the negative pressure collecting assembly of this embodiment further includes an absorption tower 42, an induced draft fan 43 and a circulating pump 412, the absorption tower 42 is sequentially provided with a first distribution plate 44, a first filler 45, a first nozzle 46, a second distribution plate 47, a second filler 48, a second nozzle 49 and a demister 410 from bottom to top, the first distribution plate 44 is communicated with the gas collecting hood 41, the bottom of the absorption tower 42 is provided with a circulating tank 411, the first nozzle 46 and the second nozzle 49 are both communicated with the circulating tank 411, the induced draft fan 43 is communicated with the demister 410, and the demister 410 is configured to intercept liquid in the absorption tower 42 and discharge the liquid through the induced draft fan 43. One end of the circulation pump 412 is connected to the circulation tank 411, and the other end is simultaneously communicated with the first nozzle 46 and the second nozzle 49.
Further, the first packing 45 and the second packing 48 are bulk packings such as raschig rings, pall rings, arc saddle rings, and the like, and this embodiment is not particularly limited thereto. The circulating pump 412 sprays the spray liquid from the absorption circulating tank 411 uniformly onto the first packing 45 and the second packing 48 through the first nozzle 46 and the second nozzle 49, and flows downwards along the first packing 45 and the second packing 48, and flows through the gap of the first packing 45 and the gap of the second packing 48 in a reverse flow manner with the acid mist and most of the dust, the spray liquid is fully contacted with the acid mist and most of the dust on the surface of the first packing 45 and the surface of the second packing 48, the acid mist and the spray liquid are subjected to absorption or neutralization reaction, and the dust and liquid drops are condensed, so that the acid mist and most of the dust enter the circulating tank 411 along with the spray liquid, and the spray liquid is recycled. The tail gas is discharged from the exhaust pipeline through the induced draft fan 43 after the spray liquid is intercepted by the demister 410. The first filler 45, the second filler 48 and the first distribution plate 44 are arranged to redistribute the spray liquid, reduce the influence of the wall flow effect of the downward flow of the spray liquid, and realize the full contact and reaction of the acid mist and the dust with the spray liquid.
By adopting the stone coal vanadium ore curing production equipment of the embodiment, the production steps are as follows:
step one, adding stone coal and concentrated sulfuric acid into a box body 1, or adding the stone coal, the concentrated sulfuric acid and water into the box body 1, stirring the stone coal, the concentrated sulfuric acid and the water by a stirring unit to mix and heat the stone coal, the concentrated sulfuric acid and the water to form clinker, and extruding the clinker into a material liquid tank 31 by the stirring unit;
step two, adding liquid into the liquid inlet 311, stirring the clinker and the liquid by a slurry stirring unit, and discharging the stirred cured slurry from a slurry discharge port 312;
wherein, in the first step and the second step, the gas-collecting hood 41 which is arranged opposite to the box body 1 and the slurrying component collects acid mist and/or dust in real time.
It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.
Claims (10)
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| CN201921215291.0U CN210314439U (en) | 2019-07-30 | 2019-07-30 | A kind of stone coal vanadium ore maturation production equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110284013A (en) * | 2019-07-30 | 2019-09-27 | 中国科学院过程工程研究所 | A kind of bone coal navajoite curing production equipment and bone coal navajoite curing production method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110284013A (en) * | 2019-07-30 | 2019-09-27 | 中国科学院过程工程研究所 | A kind of bone coal navajoite curing production equipment and bone coal navajoite curing production method |
| CN110284013B (en) * | 2019-07-30 | 2023-08-29 | 中国科学院过程工程研究所 | Stone coal vanadium ore aging production equipment and stone coal vanadium ore aging production method |
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