CN114733607A - Preparation equipment and preparation method for molten steel refining agent - Google Patents
Preparation equipment and preparation method for molten steel refining agent Download PDFInfo
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- CN114733607A CN114733607A CN202210373833.7A CN202210373833A CN114733607A CN 114733607 A CN114733607 A CN 114733607A CN 202210373833 A CN202210373833 A CN 202210373833A CN 114733607 A CN114733607 A CN 114733607A
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- refining agent
- molten steel
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 37
- 239000010959 steel Substances 0.000 title claims abstract description 37
- 238000007670 refining Methods 0.000 title claims abstract description 26
- 238000002360 preparation method Methods 0.000 title claims abstract description 21
- 238000000227 grinding Methods 0.000 claims abstract description 62
- 238000005245 sintering Methods 0.000 claims abstract description 39
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 25
- 238000007599 discharging Methods 0.000 claims abstract description 22
- 238000001354 calcination Methods 0.000 claims abstract description 9
- 238000011084 recovery Methods 0.000 claims abstract description 8
- 230000009471 action Effects 0.000 claims abstract description 7
- 238000009826 distribution Methods 0.000 claims abstract description 7
- 238000009825 accumulation Methods 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 134
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 20
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 16
- 238000003825 pressing Methods 0.000 claims description 14
- 239000002994 raw material Substances 0.000 claims description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 10
- 239000000428 dust Substances 0.000 claims description 10
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 235000017550 sodium carbonate Nutrition 0.000 claims description 8
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 8
- 238000004140 cleaning Methods 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 claims description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 5
- 229910052681 coesite Inorganic materials 0.000 claims description 5
- 229910052593 corundum Inorganic materials 0.000 claims description 5
- 229910052906 cristobalite Inorganic materials 0.000 claims description 5
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 5
- 239000000377 silicon dioxide Substances 0.000 claims description 5
- 235000012239 silicon dioxide Nutrition 0.000 claims description 5
- 229910052682 stishovite Inorganic materials 0.000 claims description 5
- 229910052905 tridymite Inorganic materials 0.000 claims description 5
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 5
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 4
- 235000019738 Limestone Nutrition 0.000 claims description 4
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 4
- 229910000323 aluminium silicate Inorganic materials 0.000 claims description 4
- DLHONNLASJQAHX-UHFFFAOYSA-N aluminum;potassium;oxygen(2-);silicon(4+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[Al+3].[Si+4].[Si+4].[Si+4].[K+] DLHONNLASJQAHX-UHFFFAOYSA-N 0.000 claims description 4
- 239000000440 bentonite Substances 0.000 claims description 4
- 229910000278 bentonite Inorganic materials 0.000 claims description 4
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 4
- 230000003139 buffering effect Effects 0.000 claims description 4
- 239000011575 calcium Substances 0.000 claims description 4
- 229910052791 calcium Inorganic materials 0.000 claims description 4
- 235000010216 calcium carbonate Nutrition 0.000 claims description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 4
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 4
- 239000006028 limestone Substances 0.000 claims description 4
- 239000011591 potassium Substances 0.000 claims description 4
- 229910052700 potassium Inorganic materials 0.000 claims description 4
- 239000002918 waste heat Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000004615 ingredient Substances 0.000 claims description 3
- 230000009467 reduction Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 239000000779 smoke Substances 0.000 claims description 3
- 238000009423 ventilation Methods 0.000 claims description 3
- 238000012216 screening Methods 0.000 claims description 2
- 238000011946 reduction process Methods 0.000 claims 1
- 238000000034 method Methods 0.000 description 11
- 229910052742 iron Inorganic materials 0.000 description 8
- 239000000047 product Substances 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 229910000805 Pig iron Inorganic materials 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 238000003723 Smelting Methods 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 238000005272 metallurgy Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229920006052 Chinlon® Polymers 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C7/00—Crushing or disintegrating by disc mills
- B02C7/02—Crushing or disintegrating by disc mills with coaxial discs
- B02C7/08—Crushing or disintegrating by disc mills with coaxial discs with vertical axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
- B01J2/14—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic in rotating dishes or pans
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C7/00—Crushing or disintegrating by disc mills
- B02C7/11—Details
- B02C7/14—Adjusting, applying pressure to, or controlling distance between, discs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C7/00—Crushing or disintegrating by disc mills
- B02C7/11—Details
- B02C7/16—Driving mechanisms
-
- 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
- B08B15/04—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area from a small area, e.g. a tool
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/076—Use of slags or fluxes as treating agents
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a preparation device and a preparation method for a molten steel refining agent, which belong to the technical field of molten steel refining agents and comprise a grinding device, wherein a lower end pipeline of the grinding device is connected with a disk granulator, one end of the disk granulator is provided with a sintering machine, two ends of the sintering machine are respectively provided with a conveying belt, and the upper end of a calcining area of the sintering machine is provided with a heat recovery box; the feed distributing assembly is used for distributing and discharging the feed balls, the feed balls enter the feed distributing barrel from the feed hole and fall onto the buffer cushion, the buffer cushion has buffer force under the elastic action of the reset spring, the feed balls cannot deform when falling, then the feed balls roll in the feed distributing chute and are discharged from the feed hole, the feed distribution is uniform, and the accumulation is avoided.
Description
Technical Field
The invention belongs to the technical field of molten steel refining agents, and particularly relates to preparation equipment and a preparation method for a molten steel refining agent.
Background
The steel smelting is a general term of steel and iron metallurgy process. Iron produced industrially is classified into pig iron (containing carbon at 2% or more) and steel (containing carbon at less than 2%) according to the carbon content.
Most of modern iron making adopts blast furnace iron making, and a direct reduction iron making method and an electric furnace iron making method are respectively adopted. The steel-making is mainly made by using pig iron smelted by blast furnace, sponge iron smelted by direct reduction iron-making method and waste steel as raw materials and smelting into steel by different methods. The basic production process is that iron ore is smelted into pig iron in an iron-smelting furnace, then the pig iron is used as raw material, and is smelted into steel by different methods, and then the steel is casted into steel ingot or continuous casting billet.
The prior art has the following problems: when the existing preparation equipment for the molten steel refining agent is used, raw materials cannot be adjusted when being ground, and different grinding fineness cannot be adjusted; the materials granulated by the granulator are inconvenient to feed, and are easy to deform, so that the quality is influenced; no cleaning component is arranged in front of the sintering machine, so that impurities exist on the surface area of the granulated product, and sintering is influenced.
Disclosure of Invention
To solve the problems raised in the background art described above. The invention provides a preparation device for a molten steel refining agent, which has the characteristics of adjustable grinding, convenient blanking and portable ash removal.
The invention also aims to provide a preparation method of the preparation equipment for the molten steel refining agent.
In order to achieve the purpose, the invention provides the following technical scheme: a preparation device for a steel liquid refining agent comprises a grinding device, wherein a lower end pipeline of the grinding device is connected with a disc granulator, one end of the disc granulator is provided with a sintering machine, two ends of the sintering machine are respectively provided with a conveying belt, the upper end of a calcining area of the sintering machine is provided with a heat recovery box, the upper end of the heat recovery box is provided with a vent pipe, and the other end of the vent pipe extends into a front-end drying area of the sintering machine;
the grinding device comprises an electric telescopic rod, a grinding box, a feeding hole, a lower film pressing roller, a discharging hole, an upper grinding roller, a driving motor, a fixing frame and supporting legs, wherein the electric telescopic rod is arranged at the upper end of the grinding box, the fixing frame is arranged at the lower end of the electric telescopic rod, the driving motor is arranged inside the fixing frame, the upper grinding roller is arranged in a rotating shaft of the driving motor, the lower film pressing roller is arranged at the bottom inside the grinding box, the discharging hole is formed in the middle of the bottom of the grinding box, the feeding hole is formed in the side edge of the grinding box, and the supporting legs are arranged on the periphery of the bottom of the grinding box.
Furthermore, the lower end inclination angle of the upper grinding roller is consistent with the inclination angle of the inner wall of the lower film pressing roller.
Further, the discharging pipe of the disc granulator is provided with a material distributing assembly, the material distributing assembly comprises a material distributing cylinder, a material distributing chute, a material discharging hole, a reset spring, a material distributing block, a buffering cushion and a material feeding hole, wherein the material distributing block is arranged at the bottom inside the material distributing cylinder, a plurality of penetrating material discharging holes are uniformly formed in the middle of the material distributing block, the material feeding hole is formed in the upper end of the material distributing cylinder, and the material distributing chute is formed in two sides of the upper end of the material distributing block.
Furthermore, a buffer block is arranged at one end, far away from the feeding hole, of the material distribution chute.
Furthermore, a collecting cylinder is arranged in the middle of the upper end of the collecting plate, a dust screen is arranged at the upper end of the inner part of the collecting cylinder, a plurality of air inlets are uniformly formed in the lower end of the collecting plate, and an exhaust fan is arranged in the middle of the collecting plate.
Furthermore, the dust screen is connected with the inner wall of the collecting cylinder in a buckling mode, and a sealing gasket is arranged at the joint of the dust screen and the collecting cylinder.
Furthermore, a collecting ring is arranged in the collecting cylinder, and the lower end of the collecting ring is of an inclined structure.
Further, the preparation method of the preparation equipment of the molten steel refining agent comprises the following steps:
proportioning raw materials: the steel liquid refining agent comprises the following ingredients: 55-60% of volcanic aluminosilicate raw material (wherein the mass fraction of SiO2 accounts for 74%, Al2O3 accounts for 13%, Na2O + K2O accounts for 6%, and the balance is others), 20-25% of soda ash (the content of Na2CO3 is more than 95%), 15-20% of potassium feldspar, (the content of potassium is 9-12%), 15-20% of limestone (the content of CaCO3 maxing is more than 90%), 8-10% of refined iron powder (the content of Fe2O3 is more than 80%), and 3% of calcium-based bentonite;
mixing and grinding: the proportioned and mixed raw materials enter a grinding box from a feeding hole, an electric telescopic rod extends to drive a fixing frame to move downwards, a driving motor rotates to drive an upper grinding roller to rotate, the upper grinding roller and a lower film pressing roller are matched to grind the mixed materials, the mixed materials are ground until the residue on a target standard screen is less than percent, and the ground materials are discharged from a discharging hole;
mixing and granulating: discharging the ground material from a discharge port, adding 8-10% of water, and feeding the material into a disc granulator to form material balls with the diameter of about 8-12 mm;
fourthly, separating materials and cleaning ash: the material ball is distributed and discharged through the distributing assembly, enters the distributing barrel from the feeding hole and falls on the buffer cushion, the buffer cushion has buffer force under the elastic action of the reset spring, so that the material ball cannot deform when falling, then rolls through the distributing chute and is discharged from the discharging hole, the distribution is uniform, and the accumulation is avoided; the exhaust fan rotates to suck, so that sundries around the material balls are sucked into the collecting barrel and are intercepted by the dustproof net, and the sundries fall into the collecting ring;
sintering the product: the material balls after material distribution and ash removal are conveyed into a sintering machine through a conveying belt, waste heat smoke is conveyed through a vent pipe, the material balls are dried from room temperature to 300-400 ℃, the drying is kept for about 25-30 minutes, then the material balls enter a sintering region at 1050-1200 ℃ for sintering, the sintering time is 15-20 minutes, then ventilation cooling is carried out, namely heat exchange air enters a calcining section for about 30 minutes, the whole sintering cooling process is about 70-80 minutes, the sintering material is crushed and ground, the 150-mesh standard sieve residue is less than 20%, and the finished product is prepared.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the fixing frame is driven to move downwards by the extension of the electric telescopic rod, the driving motor rotates to drive the upper grinding roller to rotate, and the upper grinding roller and the lower film pressing roller are matched to grind a mixture, so that the grinding diameter is adjustable, different grinding requirements are met, and the use portability is improved;
2. the material ball distributing device has the advantages that the material ball is distributed and discharged through the material distributing assembly, the material ball enters the material distributing barrel from the material inlet hole and falls on the buffer cushion, the buffer cushion has buffer force under the elastic action of the reset spring, so that the material ball cannot deform when falling, then the material ball rolls through the material distributing chute and is discharged from the material outlet hole, the material distribution is uniform, and the accumulation is avoided;
3. the dust cleaning device is provided with the dust cleaning component, the exhaust fan rotates to suck, so that sundries around the material balls are sucked into the collecting barrel and intercepted through the dust screen, the sundries fall into the collecting ring, and the sintering is prevented from being influenced by the sundries.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view of a grinding box of the present invention;
FIG. 3 is a perspective view of the polishing apparatus of the present invention;
FIG. 4 is a cross-sectional view of a dispensing assembly of the present invention;
FIG. 5 is a cross-sectional view of the ash removal assembly of the present invention;
in the figure: 1. a grinding device; 11. an electric telescopic rod; 12. grinding a box; 13. a feed inlet; 14. pressing the film roller; 15. a discharge port; 16. an upper grinding roller; 17. a drive motor; 18. a fixed mount; 19. supporting legs; 2. a disk pelletizer; 3. a material distributing component; 31. a material separating barrel; 32. a material distributing chute; 33. a buffer block; 34. a blanking hole; 35. a return spring; 36. a material distributing block; 37. a cushion pad; 38. a feed port; 4. a conveyor belt; 5. sintering machine; 6. a heat recovery tank; 7. a breather pipe; 8. a soot cleaning assembly; 81. a dust screen; 82. a collection canister; 83. a collection plate; 84. an air inlet; 85. an exhaust fan; 86. and a collecting ring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides the following technical solutions: a preparation device for a molten steel refining agent comprises a grinding device 1, wherein a lower end pipeline of the grinding device 1 is connected with a disc granulator 2, one end of the disc granulator 2 is provided with a sintering machine 5, two ends of the sintering machine 5 are respectively provided with a conveying belt 4, the upper end of a calcining area of the sintering machine 5 is provided with a heat recovery box 6, the upper end of the heat recovery box 6 is provided with a vent pipe 7, and the other end of the vent pipe 7 extends into a front end drying area of the sintering machine 5;
Further, in the invention, the lower end of the upper grinding roller 16 is inclined at the same angle with the inner wall of the lower film pressing roller 14,
by adopting the technical scheme, the upper grinding roller 16 and the lower film pressing roller 14 are ensured to be stably matched, and the grinding quality is ensured.
Further, the material distributing assembly 3 is arranged on the material discharging pipe of the disc granulator 2, the material distributing assembly 3 comprises a material distributing cylinder 31, a material distributing chute 32, a material discharging hole 34, a return spring 35, a material distributing block 36, a cushion pad 37 and a material feeding hole 38, wherein the material distributing block 36 is arranged at the bottom inside the material distributing cylinder 31, a plurality of penetrating material discharging holes 34 are uniformly arranged in the middle of the material distributing block 36, the material feeding hole 38 is arranged at the upper end of the material distributing cylinder 31, the material distributing chute 32 is arranged on two sides of the upper end of the material distributing block 36,
through adopting above-mentioned technical scheme, the material ball gets into from feed port 38 and divides in the feed cylinder 31, on the blotter 37 that falls, the blotter 37 has the cushion effect under reset spring 35 puts into the elastic action, can not warp when making the material ball fall, then the material ball rolls in through dividing material spout 32, discharges from feed opening 34, divides the material evenly, avoids piling up.
Further, in the invention, one end of the material dividing chute 32 far away from the material inlet 38 is provided with a buffer block 33,
through adopting above-mentioned technical scheme, buffer block 33 cushions, avoids the material ball to warp.
Further, in the invention, a collecting cylinder 82 is arranged in the middle of the upper end of a collecting plate 83, a dustproof net 81 is arranged at the upper end of the interior of the collecting cylinder 82, a plurality of air inlets 84 are uniformly arranged at the lower end of the collecting plate 83, an exhaust fan 85 is arranged in the middle of the collecting plate 83,
by adopting the technical scheme, the exhaust fan 85 rotates to suck, so that sundries around the material balls are sucked into the collecting cylinder 82 and intercepted by the dustproof net 81.
Further, the dust screen 81 is connected with the inner wall of the collecting cylinder 82 in a buckling way, a sealing gasket is arranged at the joint of the dust screen 81 and the collecting cylinder 82,
by adopting the technical scheme, the device is convenient to disassemble and assemble and convenient to clean sundries.
Further, in the present invention, a collecting ring 86 is provided inside the collecting cylinder 82, a lower end of the collecting ring 86 is provided with an inclined structure,
by adopting the technical scheme, sundries are convenient to collect, and sundry backflow is avoided.
Further, the preparation method of the preparation equipment of the molten steel refining agent comprises the following steps:
proportioning raw materials: the steel liquid refining agent comprises the following ingredients: 55-60% of volcanic aluminosilicate raw material (wherein the mass fraction of SiO2 accounts for 74%, Al2O3 accounts for 13%, Na2O + K2O accounts for 6%, and the balance is others), 20-25% of soda ash (the content of Na2CO3 is more than 95%), 15-20% of potassium feldspar, (the content of potassium is 9-12%), 15-20% of limestone (the content of CaCO3 maxing is more than 90%), 8-10% of refined iron powder (the content of Fe2O3 is more than 80%), and 3% of calcium-based bentonite;
mixing and grinding: the proportioned and mixed raw materials enter a grinding box 12 from a feeding hole 13, an electric telescopic rod 11 extends to drive a fixing frame 18 to move downwards, a driving motor 17 rotates to drive an upper grinding roller 16 to rotate, the upper grinding roller 16 is matched with a lower film pressing roller 14 to grind the mixed materials, the mixed materials are ground to 325 meshes, the standard screen residue is less than 15%, and the ground materials are discharged from a discharging hole 15;
mixing and granulating: discharging the ground material from a discharge port 15, adding 8-10% of water, and feeding the material into a disc granulator 2 to form material balls with the diameter of about 8-12 mm;
fourthly, separating materials and cleaning ash: the material ball is divided and discharged through the material dividing assembly 3, the material ball enters the material dividing barrel 31 from the feeding hole 38 and falls onto the cushion pad 37, the cushion pad 37 has a buffering force under the elastic action of the return spring 35, so that the material ball cannot deform when falling, then rolls through the material dividing chute 32 and is discharged from the discharging hole 34, the material dividing is uniform, and the accumulation is avoided; the exhaust fan 85 rotates to suck, so that sundries around the material balls are sucked into the collecting cylinder 82 and intercepted by the dustproof net 81, and the sundries fall into the collecting ring 86;
sintering the product: the material balls after material distribution and ash removal are conveyed into a sintering machine 5 through a conveying belt 4, waste heat smoke is conveyed through a vent pipe 7, the material balls are dried from room temperature to 300-400 ℃, the drying is kept for about 25-30 minutes, then the material balls enter a calcination interval of 1050-1200 ℃ for sintering, the sintering time is 15-20 minutes, then ventilation cooling is carried out, namely heat exchange air enters a calcination section for about 30 minutes, the whole sintering cooling process is about 70-80 minutes, the sintering material is crushed and ground, the 150-mesh standard screening residual is less than 20%, and the finished product is prepared.
The working principle and the using process of the invention are as follows: when the invention is used, the proportioning of the steel liquid refining agent is firstly carried out, 55-60% of volcanic aluminosilicate raw material (wherein the mass fraction of SiO2 is 74%, Al2O3 is 13%, Na2O + K2O is 6%, and the rest is the balance), 20-25% of soda ash (the content of Na2CO3 is more than 95%), 15-20% of potassium feldspar, (the content of potassium is 9-12%), 15-20% of limestone (the content of CaCO3 chinlon is more than 90%), 8-10% of fine iron powder (the content of Fe2O3 is more than 80%), and 3% of calcium-based bentonite are carried out; the proportioned and mixed raw materials enter a grinding box 12 from a feeding hole 13, an electric telescopic rod 11 extends to drive a fixing frame 18 to move downwards, a driving motor 17 rotates to drive an upper grinding roller 16 to rotate, the upper grinding roller 16 is matched with a lower film pressing roller 14 to grind the mixed materials, the mixed materials are ground to 325 meshes, the standard screen residue is less than 15%, and the ground materials are discharged from a discharging hole 15; adding 8-10% of water, and making into pellets with diameter of 8-12mm in a disc granulator 2; the material ball is divided and discharged through the material dividing assembly 3, the material ball enters the material dividing barrel 31 from the feeding hole 38 and falls on the cushion pad 37, the cushion pad 37 has a buffering force under the elastic action of the reset spring 35, so that the material ball cannot deform when falling, then the material ball rolls through the material dividing chute 32 and is discharged from the discharging hole 34, the material is divided uniformly, and the accumulation is avoided; the exhaust fan 85 rotates to suck, so that sundries around the material balls are sucked into the collecting cylinder 82 and intercepted by the dustproof net 81, and the sundries fall into the collecting ring 86; the material balls with the separated material and the ash removed are conveyed into a sintering machine 5 through a conveying belt 4, waste heat flue gas is conveyed through a vent pipe 7, the material balls are dried from room temperature to 400 ℃ of temperature of 300-;
the chemical composition of the final product is such that,
SiO2 Na2O + K2O CaO FeO + Fe2O3 Al2O3 balance
42-46％ 20-22％ 13-15％ 9-11％ 7-8％ 6-10％
The method is used for casting and metallurgy processes, plays a role in gathering and purifying non-metallic inclusions in molten steel, realizes high-purity molten steel, and obtains high-quality steel and casting products.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A preparation equipment for molten steel refining agent, which comprises a grinding device (1), and is characterized in that: the lower end pipeline of the grinding device (1) is connected with a disc granulator (2), one end of the disc granulator (2) is provided with a sintering machine (5), two ends of the sintering machine (5) are respectively provided with a conveying belt (4), the upper end of a calcining area of the sintering machine (5) is provided with a heat recovery box (6), the upper end of the heat recovery box (6) is provided with a vent pipe (7), and the other end of the vent pipe (7) extends into a front end drying area of the sintering machine (5);
the grinding device (1) comprises an electric telescopic rod (11), a grinding box (12), a feeding hole (13), a lower film pressing roller (14), a discharging hole (15), an upper grinding roller (16), a driving motor (17), a fixing frame (18) and supporting legs (19), wherein the upper end of the grinding box (12) is provided with an electric telescopic rod (11), the lower end of the electric telescopic rod (11) is provided with a fixed frame (18), a driving motor (17) is arranged inside the fixed frame (18), an upper grinding roller (16) is arranged on a rotating shaft of the driving motor (17), a lower film pressing roller (14) is arranged at the bottom inside the grinding box (12), the grinding device is characterized in that a discharge hole (15) is formed in the middle of the bottom of the grinding box (12), a feed hole (13) is formed in the side edge of the grinding box (12), and supporting legs (19) are arranged on the periphery of the bottom of the grinding box (12).
2. The manufacturing equipment for molten steel refining agent according to claim 1, characterized in that: the lower end inclination angle of the upper grinding roller (16) is consistent with the inclination angle of the inner wall of the lower film pressing roller (14).
3. The manufacturing equipment for molten steel refining agent according to claim 1, characterized in that: the discharging pipe of disc granulator (2) is provided with divides material subassembly (3), divide material subassembly (3) including divide feed cylinder (31), divide material spout (32), unloading hole (34), reset spring (35), distributor block (36), blotter (37) and feed port (38), wherein, the inside bottom that divides feed cylinder (31) is provided with distributor block (36), evenly be provided with a plurality of unloading holes (34) that run through in the middle of distributor block (36), the upper end that divides feed cylinder (31) is provided with feed port (38), the upper end both sides of distributor block (36) are provided with divides material spout (32).
4. The manufacturing equipment for molten steel refining agent according to claim 1, characterized in that: one end of the material distributing chute (32) far away from the feeding hole (38) is provided with a buffer block (33).
5. The manufacturing equipment for molten steel refining agent according to claim 1, characterized in that: be provided with collecting vessel (82) in the middle of the upper end of collecting plate (83), the inside upper end of collecting vessel (82) is provided with dust screen (81), the lower extreme of collecting plate (83) evenly is provided with a plurality of inlet ports (84), the centre of collecting plate (83) is provided with air exhauster (85).
6. The manufacturing equipment for molten steel refining agent according to claim 1, characterized in that: the dustproof net (81) is connected with the inner wall of the collecting cylinder (82) in a buckling mode, and a sealing gasket is arranged at the joint of the dustproof net (81) and the collecting cylinder (82).
7. The manufacturing equipment for molten steel refining agent according to claim 1, characterized in that: the collecting cylinder (82) is internally provided with a collecting ring (86), and the lower end of the collecting ring (86) is of an inclined structure.
8. The manufacturing apparatus for a molten steel refining agent according to any one of claims 1 to 7, wherein: the preparation method of the steel liquid refining agent preparation equipment comprises the following steps:
proportioning raw materials: the steel liquid refining agent comprises the following ingredients: 55-60% of volcanic aluminosilicate raw material (wherein the mass fraction of SiO2 accounts for 74%, Al2O3 accounts for 13%, Na2O + K2O accounts for 6%, and the balance is others), 20-25% of soda ash (the content of Na2CO3 is more than 95%), 15-20% of potassium feldspar, (the content of potassium is 9-12%), 15-20% of limestone (the content of CaCO3 maxing is more than 90%), 8-10% of refined iron powder (the content of Fe2O3 is more than 80%), and 3% of calcium-based bentonite;
mixing and grinding: the proportioned and mixed raw materials enter a grinding box (12) from a feeding hole (13), an electric telescopic rod (11) extends to drive a fixing frame (18) to move downwards, a driving motor (17) rotates to drive an upper grinding roller (16) to rotate, the upper grinding roller (16) is matched with a lower film pressing roller (14) to grind the mixed materials, the mixed materials are ground to 325 meshes, the allowance of a standard sieve is less than 15%, and the ground materials are discharged from a discharging hole (15);
mixing and granulating: discharging the ground material from a discharge hole (15), adding 8-10% of water, and feeding the material into a disc granulator (2) to form material balls with the diameter of about 8-12 mm;
fourthly, separating materials and cleaning ash: the material balls are divided and discharged through the material dividing assembly (3), the material balls enter the material dividing barrel (31) from the feeding hole (38) and fall onto the cushion pad (37), the cushion pad (37) has a buffering force under the elastic action of the reset spring (35) so that the material balls cannot deform when falling, then the material balls roll through the material dividing chute (32) and are discharged from the discharging hole (34), the material dividing is uniform, and the accumulation is avoided; the exhaust fan (85) rotates to suck, so that sundries around the material balls are sucked into the collecting cylinder (82) and are intercepted by the dustproof net (81), and the sundries fall into the collecting ring (86);
sintering the product: the material balls after material distribution and ash removal are conveyed into a sintering machine (5) through a conveying belt (4), waste heat smoke is conveyed through a vent pipe (7) to enable the material balls to be dried from room temperature to 300-400 ℃, the drying is kept for about 25-30 minutes, then the material balls enter a calcination interval with the temperature of 1050-1200 ℃ for sintering, the sintering time is 15-20 minutes, then the ventilation and temperature reduction are carried out, namely heat exchange air enters a calcination section for about 30 minutes, the whole sintering and temperature reduction process is about 70-80 minutes, the sintering material is crushed and ground, the 150-mesh standard screening residual is less than 20%, and the finished product is obtained.
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