WO2007088937A1 - Metal filtering apparatus - Google Patents
Metal filtering apparatus Download PDFInfo
- Publication number
- WO2007088937A1 WO2007088937A1 PCT/JP2007/051713 JP2007051713W WO2007088937A1 WO 2007088937 A1 WO2007088937 A1 WO 2007088937A1 JP 2007051713 W JP2007051713 W JP 2007051713W WO 2007088937 A1 WO2007088937 A1 WO 2007088937A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- hot water
- unit container
- ceramic tube
- filtration device
- metal
- Prior art date
Links
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 65
- 239000002184 metal Substances 0.000 title claims abstract description 65
- 238000001914 filtration Methods 0.000 title claims abstract description 46
- 239000000919 ceramic Substances 0.000 claims abstract description 73
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 60
- 239000012530 fluid Substances 0.000 claims description 33
- 239000011261 inert gas Substances 0.000 claims description 6
- 238000005086 pumping Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 2
- 239000007789 gas Substances 0.000 abstract description 61
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 abstract description 40
- 229910052786 argon Inorganic materials 0.000 abstract description 20
- 238000004140 cleaning Methods 0.000 abstract description 20
- 239000002344 surface layer Substances 0.000 abstract description 15
- 238000002347 injection Methods 0.000 abstract 5
- 239000007924 injection Substances 0.000 abstract 5
- 229910052782 aluminium Inorganic materials 0.000 description 21
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 21
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 6
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 5
- 229910010271 silicon carbide Inorganic materials 0.000 description 5
- 230000035939 shock Effects 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 230000009257 reactivity Effects 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- -1 for example Inorganic materials 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
- B01D39/2068—Other inorganic materials, e.g. ceramics
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
- B01D29/52—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in parallel connection
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/62—Regenerating the filter material in the filter
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D43/00—Mechanical cleaning, e.g. skimming of molten metals
- B22D43/001—Retaining slag during pouring molten metal
- B22D43/004—Retaining slag during pouring molten metal by using filtering means
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B21/00—Obtaining aluminium
- C22B21/06—Obtaining aluminium refining
- C22B21/064—Obtaining aluminium refining using inert or reactive gases
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B21/00—Obtaining aluminium
- C22B21/06—Obtaining aluminium refining
- C22B21/066—Treatment of circulating aluminium, e.g. by filtration
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/02—Refining by liquating, filtering, centrifuging, distilling, or supersonic wave action including acoustic waves
- C22B9/023—By filtering
-
- 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
Definitions
- the present invention relates to a metal filtering device for filtering molten metal, and is intended to prevent clogging of a ceramic tube as a filter over a long period of time.
- Metals for example, aluminum or aluminum alloy melts are poured into molds to produce desired products. Prior to pouring the molten metal into the bowl during fabrication, the molten metal is filtered with a metal filter to remove inclusions (harmful or unnecessary foreign matter) contained in the molten metal.
- the metal filtration device has a filter cassette equipped with a plurality of filter tubes (ceramic tubes) placed in the unit container, the molten metal is circulated through the unit container, and the molten metal is passed through the ceramic tube. In the surface layer, the inclusions are mainly removed to obtain a clean molten metal.
- Patent Document 1 Japanese Patent Laid-Open No. 4 346629
- the present invention has been made in view of the above situation, and an object of the present invention is to provide a metal filtration device capable of uniformly and easily cleaning a ceramic tube without complicating the structure.
- the metal filtration device of the present invention is provided with a pair of side plates in a unit container, and a long ceramic tube is attached between the pair of side plates.
- a hot water inlet that supplies molten metal in the unit container
- a hot water outlet that discharges the molten metal that has passed through the ceramic tube is provided on the side plate, and a large number of fluid jets to the bottom of the wet container under the ceramic tube
- a fluid ejection plate having holes is provided, and fluid ejection hole force
- Fluid supply means for ejecting fluid is connected to the fluid ejection plate.
- the fluid ejection hole force of the fluid ejection plate ejects fluid, thereby removing inclusions attached to the surface layer of the ceramic tube at the bottom side force of the unit container.
- the metal filtration device of the present invention according to claim 2 is the metal filtration device according to claim 1, wherein the fluid ejection plate has a size covering substantially the entire surface of the ceramic tube disposed on the bottom surface of the unit container. It is a feature.
- the fluid can also be sent by substantially the entire surface force of the bottom surface of the unit container.
- the metal filtration device of the present invention according to claim 3 is the metal filtration device according to claim 2, wherein the plurality of fluid ejection holes of the fluid ejection plate are provided evenly in the vertical and horizontal directions.
- the metal filtering device of the present invention is provided with a pair of side plates in the unit container, and a long ceramic tube is attached between the pair of side plates.
- a pump mechanism that has a hot water inlet that supplies molten metal in the unit container, a hot water outlet that discharges the molten metal that has passed through the ceramic tube is provided on the side plate, and that pumps fluid into the unit container between the hot water outlet and the pair of side plates. It is provided with. [0015] Therefore, the pumping mechanism also pumps the fluid into the unit container by the pumping loca to push in the fluid and remove the inclusions adhering to the surface layer of the ceramic tube.
- the metal filtration device of the present invention according to claim 5 is the metal filtration device according to claim 4, wherein the unit container is provided with a hot water outlet passage connected to the hot water outlet, and the hot water passage is not A piston member for supplying the active gas into the hot water passage and pushing the inert gas supplied into the hot water passage into the unit container is provided to be reciprocally movable.
- the metal filtration device of the present invention is a molten metal device that can easily clean the ceramic tube and easily perform the force without complicating the structure.
- FIG. 1 is a side sectional view of a metal filtering device according to a first embodiment of the present invention.
- FIG. 2 is a view taken along the line II-II in FIG.
- FIG. 3 is a view taken along line III-III in FIG.
- FIG. 4 is a side sectional view of a metal filtering device according to a second embodiment of the present invention.
- FIG. 5 is a view taken along line V—V in FIG.
- FIG. 6 is a view taken along the line VI—VI in FIG.
- FIG. 1 is a side cross-sectional view of a metal filtering device according to a first embodiment of the present invention
- Fig. 2 is a view taken along line II-II in Fig. 1
- Fig. 3 is a line III-III in Fig. 1. Visually shown.
- the metal filtration device 1 is provided with a filter cassette 3 in a unit container 2, and a molten metal (for example, molten aluminum) is supplied from a hot water inlet 4.
- a molten metal for example, molten aluminum
- the rum melt is filtered through the filter cassette 3 and discharged from the tap 5 and sent to the bowl.
- the filter cassette 3 includes a pair of side plates 10 (hot water side plates) and 11 (outlet side plates), and the side plates 10 and 11 are formed of silicon carbide refractory plates. Multiple between side plates 10, 11 This is a long ceramic tube 13 (in the example shown, 28 in 5 stages), and the ceramic tube 13 is formed of an alumina porous tube. Both ends of the ceramic tube 13 are fixed to the side plates 10 and 11, respectively, and the opening end of one side of the ceramic tube 13 (right side in FIG. 1) is fixed to the side plate 11 on the outlet 5 side.
- the ceramic tube 13 is made of alumina or silicon carbide. From the viewpoint of hot strength and aluminum reactivity, a ceramic tube made of an alumina porous tube is preferred.
- the molten aluminum supplied from the hot water inlet 4 is sent to the outer peripheral surface of the plurality of ceramic tubes 13 in a cylindrical shape, filtered, and sent from the side plate 11 on the hot water outlet 5 side to the hot water outlet 5. Hot water is poured out.
- a gas ejection plate 15 as a fluid ejection plate is provided at the bottom of the unit container 2, and the gas ejection plate 15 has a size over substantially the entire area where the ceramic tube 13 is disposed.
- a large number of gas ejection holes 16 as fluid ejection holes are provided on the upper surface of the gas ejection plate 15, and the gas ejection holes 16 are equally provided vertically and horizontally as shown in FIG. 3. It is also possible to fill the gas ejection holes 16 with porous carbon. By filling the porous carbon, finer bubbles can be ejected.
- the gas ejection plate 15 is, for example, a flat porous plate, and the gas ejection holes 16 are in the shape of a brag.
- the plug-like gas ejection holes 16 can also attach the internal force of the unit container 2, and the gas ejection plate 15 can be reused by replacing the gas ejection holes 16.
- the number and arrangement of the gas ejection holes 16 are arbitrary and are not limited to the illustrated example.
- gas ejection holes 16 located between the ceramic tubes 13 at the lowest level, even though the gas ejection holes 16 may exist immediately below the ceramic tube 13 at the lowest level. May be. Furthermore, gas ejection holes 16 may be located directly below the ceramic tube 13 and between the ceramic tubes 13.
- a cleaning gas supply pipe 17 as a fluid supply means is provided in the vertical direction at the side of the filter cassette 3, and the lower end of the cleaning gas supply pipe 17 is a gas ejection plate. Connected to 15. The upper end of the cleaning gas supply pipe 17 penetrates the lid 18 of the unit container 2 Then, it faces the outside and is connected to a cleaning gas supply source (not shown).
- a cleaning gas supply source not shown.
- argon gas which is an inert gas
- Nitrogen gas can also be used as the cleaning gas.
- argon gas flows from the numerous gas ejection holes 16 through the gas ejection plate 15 into the unit container 2 (inside the filter cassette 3). Will be sent.
- the molten aluminum supplied from the hot water inlet 4 into the filter cassette 3 passes through a complicated flow path formed by a plurality of ceramic tubes 13 and the ceramic tubes 13
- the outer peripheral surface force is also sent to the inside of the cylinder and filtered to remove foreign matter.
- the molten aluminum that has been filtered and is in a normal state is sent to the side plate 11 force outlet 5 on the outlet 5 side and discharged.
- Foreign matter removed during filtration accumulates on the surface layer of the ceramic tube 13, and repeated filtration of the molten aluminum prevents a predetermined flow rate from being secured by foreign matter deposited on the surface layer of the ceramic tube 13. For this reason, the filter cassette 3 is cleaned at predetermined intervals.
- argon gas is supplied from the cleaning gas supply pipe 17 at a predetermined pressure, and the argon gas is directed to the ceramic tube 13 from the many gas ejection holes 16 via the gas ejection plate 15. Erupt.
- the argon gas becomes a large number of minute bubbles, removes foreign matter deposited on the surface of the ceramic tube 13, and lifts up the foreign matter. Since the gas ejection plate 15 has a size covering almost the entire surface of the ceramic tube 13 and the gas ejection holes 16 are evenly provided in the vertical and horizontal directions, bubbles of argon gas are evenly distributed over the entire ceramic tube 13. Is sent, and the ceramic tube 13 is cleaned. For this reason, the flow rate of the molten aluminum is ensured, and desired filtration can be carried out over a long period of time.
- the surface layer can be evenly cleaned with respect to the plurality of ceramic tubes 13, and the plurality of ceramic tubes 13 can be cleaned without complicating the structure.
- the metal filtration device 1 can be made uniformly and easily.
- the ceramic tube 13 is made of a material having excellent thermal shock resistance, and is fixed to the side plates 10 and 11 so as to absorb the thermal shock.
- the gas ejection plate 15 is also made of a material with excellent thermal shock resistance. Examples of the material having a high thermal shock resistance characteristic value include silicon nitride-based fine ceramics, silicon nitride-bonded silicon carbide, and carbon.
- FIGS. 4 to 6 A second embodiment of the present invention will be described based on FIGS. 4 to 6.
- FIG. 4 is a side cross-sectional view of a metal filtration device according to a second embodiment of the present invention
- Fig. 5 is a view taken along line V-V in Fig. 4
- Fig. 6 is VI-VI in Fig. 4.
- a line arrow view is shown.
- the metal filtration device 21 is provided with a filter cassette 23 in a unit container 22, and a molten metal (for example, molten aluminum) is supplied from a hot water inlet 24.
- a molten metal for example, molten aluminum
- the molten aluminum supplied from the hot water inlet 24 is filtered through the filter cassette 23, discharged from the hot water outlet 25, and sent to the bowl.
- the unit container 22 is provided with a hot water passage 26 connected to the hot water outlet 25, and the hot water passage 26 is provided with a pump mechanism 27 that pumps argon gas as a fluid into the unit container 22.
- the hot water inlet 24 and the hot water outlet 25 are provided on one side wall portion of the unit container 22.
- the filter cassette 23 includes a pair of side plates 30 (a hot water side plate and a hot water side plate) 31 and the side plates 30 and 31 are formed of a silicon carbide refractory plate.
- a plurality of long ceramic tubes 33 (18 in four stages in the illustrated example) are provided between the side plates 30 and 31, and the ceramic tube 33 is formed of an alumina porous tube. Both ends of the ceramic tube 33 are fixed to the side plates 30 and 31, respectively, and the opening end of one side of the ceramic tube 33 (the left side in FIG. 4) is fixed to the side plate 30 on the hot water inlet 24 and outlet 25 side. .
- the ceramic tube 33 is made of alumina or silicon carbide. From the viewpoints of hot strength and aluminum reactivity, a ceramic tube made of an alumina porous tube is preferred.
- the molten aluminum supplied to the inside of the unit container 22 from the hot water inlet 24 is also sent to the cylindrical inside through the outer peripheral surface force of the plurality of ceramic tubes 33 and filtered, and passes through the hot water passage 26 from the side plate 30.
- the hot water is sent to the hot water outlet 25 and discharged.
- the pump mechanism 27 that pumps argon gas into the unit container 22 in the hot water passage 26.
- the pump mechanism 27 includes a piston member 35 that slides (upward and downward in FIG. 4) in a hot water supply passage 26 as a cylinder.
- the piston member 35 includes a shaft portion 36 that is supported by a support plate 37.
- the piston member 35 and the support plate 37 can be moved up and down (reciprocated) by an actuator (not shown).
- the piston member 35 and the support plate 37 are moved to the hot water passage 26 on the upper side of the hot water outlet 25 at the time of filtering the molten aluminum.
- the support plate 37 may be fixed to the hot water passage 26 on the upper side of the hot water outlet 25 and the piston member 35 may be moved up and down.
- the shaft portion 36 of the piston member 35 is disposed through the support hole 52 of the heating lid 51, and the shaft portion 36 is slidable on the support portion 53 provided in the support hole 52. It is supported by.
- the shaft portion 36 is hollow, and argon gas is supplied from the hollow portion through the piston member 35 into the hot water passage 26.
- the piston member 35 and the support plate 37 at the time of cleaning are moved to the hot water passage 26 below the hot water outlet 25.
- argon gas which is an inert gas, but also nitrogen gas can be used.
- argon gas By sending argon gas from the shaft 36, argon gas is supplied into the hot water passage 26, and by reciprocatingly sliding the piston member 35, the argon gas supplied into the hot water passage 26 is moved into the unit container 22. It is pumped (in the filter cassette 23).
- the molten aluminum supplied from the hot water inlet 24 into the filter cassette 23 passes through a complicated flow path formed by a plurality of ceramic tubes 33, and the outer periphery of the ceramic tube 33 Surface force is also sent to the inside of the cylinder and filtered to remove inclusions.
- the molten aluminum that has been filtered and cleaned is sent from the side plate 30 on the outlet 25 side to the outlet 25 through the outlet passage 26 and discharged.
- the piston member 35 and the support plate 37 are moved to the hot water passage 26 above the hot water outlet 25, the piston member 35 and the support plate 37 are not hindered from discharging the molten aluminum.
- Inclusions removed during the filtration are deposited on the surface layer of the ceramic tube 33.
- a predetermined flow rate can be secured by the inclusions deposited on the surface layer of the ceramic tube 33. Disappear. For this reason, the filter cassette 23 is cleaned at predetermined intervals.
- the piston member 35 and The support plate 37 is moved to the hot water outlet passage 26 below the hot water outlet 25, and argon gas is supplied from the shaft portion 36 of the pump mechanism 27 to supply argon gas into the hot water outlet passage 26, and the piston member 35 is slid back and forth.
- the argon gas supplied into the hot water outlet passage 26 is pumped into the unit container 22.
- the molten aluminum inside the ceramic tube 33 moves, a back flow phenomenon occurs inside the ceramic tube 33, and inclusions deposited on the surface layer of the ceramic tube 33 rise.
- the surface layer of the ceramic tube 33 is cleaned, the flow rate of the molten aluminum is ensured, and the flow rate can be secured over a long period of time.
- the surface layer of the plurality of ceramic tubes 33 can be evenly cleaned, and the plurality of ceramic tubes 33 can be cleaned without complicating the structure.
- the molten metal device 21 can be made uniformly and easily.
- the present invention can be used in the industrial field of metal filtration devices for filtering molten metal.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Inorganic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Ceramic Engineering (AREA)
- Acoustics & Sound (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Filtering Materials (AREA)
- Filtration Of Liquid (AREA)
- Continuous Casting (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
A metal filtering apparatus that without complex structuring, permits uniform easy cleaning of multiple ceramic tubes. A pair of side boards (10, 11) are provided in unit container (2). Multiple lengthy ceramic tubes (13) are fitted between the pair of side boards (10, 11). The bottom of the unit container (2) under the ceramic tubes (13) is fitted with gas injection plate (15) having a multiplicity of gas injection apertures (16). By injection of argon gas through the gas injection apertures (16) of the gas injection plate (15), there is accomplished removing of inclusions adhering to the surface layer of the ceramic tubes (13) from the bottom side of the unit container (2).
Description
明 細 書 Specification
金属濾過装置 Metal filtration device
技術分野 Technical field
[0001] 本発明は、金属溶湯の濾過を行う金属濾過装置に関し、フィルタであるセラミツクチ ユーブの目詰まりを長期にわたり防止するように企図したものである。 [0001] The present invention relates to a metal filtering device for filtering molten metal, and is intended to prevent clogging of a ceramic tube as a filter over a long period of time.
背景技術 Background art
[0002] 金属、例えば、アルミニウムやアルミニウム合金の溶湯を铸型に注湯して所望の铸 造品を铸造している。铸造に際し铸型に金属溶湯を注湯する前に、金属溶湯を金属 濾過装置で濾過し、溶湯中に含まれて ヽる介在物(有害又は不必要な異物)を除去 している。金属濾過装置は、複数のフィルターチューブ (セラミックチューブ)を備えた フィルタカセットをユニット容器内に配し、ユニット容器に金属溶湯を流通させ、セラミ ックチューブに金属溶湯を通すことにより、表面濾過でセラミックチューブの表層部で 主に介在物を除去して清浄な金属溶湯を得て 、る。 [0002] Metals, for example, aluminum or aluminum alloy melts are poured into molds to produce desired products. Prior to pouring the molten metal into the bowl during fabrication, the molten metal is filtered with a metal filter to remove inclusions (harmful or unnecessary foreign matter) contained in the molten metal. The metal filtration device has a filter cassette equipped with a plurality of filter tubes (ceramic tubes) placed in the unit container, the molten metal is circulated through the unit container, and the molten metal is passed through the ceramic tube. In the surface layer, the inclusions are mainly removed to obtain a clean molten metal.
[0003] このような金属濾過装置にあっては、介在物がセラミックチューブの表層付近に堆 積し長期の使用により目詰まりをおこしてしまう。このため、従来から、セラミックチュー ブの目詰まりを抑制するための洗浄の技術が種々提案されて!、る(例えば、特許文 献 1参照)。 In such a metal filtration device, inclusions accumulate near the surface layer of the ceramic tube and become clogged due to long-term use. For this reason, various cleaning techniques for suppressing clogging of ceramic tubes have been proposed in the past (for example, see Patent Document 1).
[0004] 従来の洗浄技術は、金属溶湯を逆流させてセラミックチューブの表層付近に堆積し た異物を除去するようにしている。また、洗浄ガスを送ってフィルタを洗浄する技術も 提案されている。 [0004] In the conventional cleaning technique, a metal melt is caused to flow backward to remove foreign matter deposited near the surface layer of the ceramic tube. A technique for cleaning the filter by sending cleaning gas has also been proposed.
[0005] しかし、金属溶湯を逆流させる場合、逆流のための圧力を抑制するために、異物の 詰まりが生じた個別のセラミックチューブに対して金属溶湯を逆流させることが行われ ているが、介在物除去の操作を頻繁に行う必要があり、効率が非常に悪くなつてしま う。また、洗浄ガスを送る場合、複数のセラミックチューブに対して洗浄ガスを均等に 送る必要がある力 技術が確立されて ヽな 、のが実情である。 [0005] However, when the molten metal is made to flow backward, in order to suppress the pressure for the flowing backward, the molten metal is made to flow backward against the individual ceramic tube where the clogging of foreign matter has occurred. The object removal operation must be performed frequently, and the efficiency will be very poor. In addition, in the case of sending cleaning gas, it is a fact that a force technology that needs to send cleaning gas evenly to multiple ceramic tubes has been established.
[0006] 特許文献 1 :特開平 4 346629号公報 [0006] Patent Document 1: Japanese Patent Laid-Open No. 4 346629
発明の開示
発明が解決しょうとする課題 Disclosure of the invention Problems to be solved by the invention
[0007] 本発明は上記状況に鑑みてなされたもので、構造を複雑にすることなくセラミツクチ ユーブの洗浄を均一にしかも容易に行うことができる金属濾過装置を提供することを 目的とする。 [0007] The present invention has been made in view of the above situation, and an object of the present invention is to provide a metal filtration device capable of uniformly and easily cleaning a ceramic tube without complicating the structure.
課題を解決するための手段 Means for solving the problem
[0008] 上記目的を達成するための請求項 1に係る本発明の金属濾過装置は、ユニット容 器内に一対の側板を設け、一対の側板の間に長尺状のセラミックチューブを取り付 け、ユニット容器内に金属溶湯を供給する入湯口を設け、セラミックチューブを通過し た金属溶湯を排出する出湯口を側板に設け、セラミックチューブの下側におけるュ- ット容器の底部に多数の流体噴出孔を有する流体噴出プレートを備え、流体噴出孔 力 流体を噴出させるための流体供給手段を流体噴出プレートに接続したことを特 徴とする。 [0008] In order to achieve the above object, the metal filtration device of the present invention according to claim 1 is provided with a pair of side plates in a unit container, and a long ceramic tube is attached between the pair of side plates. There is a hot water inlet that supplies molten metal in the unit container, a hot water outlet that discharges the molten metal that has passed through the ceramic tube is provided on the side plate, and a large number of fluid jets to the bottom of the wet container under the ceramic tube A fluid ejection plate having holes is provided, and fluid ejection hole force Fluid supply means for ejecting fluid is connected to the fluid ejection plate.
[0009] このため、流体噴出プレートの流体噴出孔力 流体を噴出させることで、ユニット容 器の底部側力 セラミックチューブの表層に付着した介在物を除去する。 [0009] For this reason, the fluid ejection hole force of the fluid ejection plate ejects fluid, thereby removing inclusions attached to the surface layer of the ceramic tube at the bottom side force of the unit container.
[0010] そして、請求項 2に係る本発明の金属濾過装置は、請求項 1に記載の金属濾過装 置において、流体噴出プレートは、ユニット容器の底面のセラミックチューブの配置 部位の略全面にわたる大きさであることを特徴とする。 [0010] Then, the metal filtration device of the present invention according to claim 2 is the metal filtration device according to claim 1, wherein the fluid ejection plate has a size covering substantially the entire surface of the ceramic tube disposed on the bottom surface of the unit container. It is a feature.
[0011] このため、ユニット容器の底面の略全面力も流体を送ることができる。 [0011] For this reason, the fluid can also be sent by substantially the entire surface force of the bottom surface of the unit container.
[0012] また、請求項 3に係る本発明の金属濾過装置は、請求項 2に記載の金属濾過装置 において、流体噴出プレートの多数の流体噴出孔は、縦横で均等に設けられている ことを特徴とする。 [0012] Further, the metal filtration device of the present invention according to claim 3 is the metal filtration device according to claim 2, wherein the plurality of fluid ejection holes of the fluid ejection plate are provided evenly in the vertical and horizontal directions. Features.
[0013] このため、縦横で均等に設けられた多数の流体噴出孔力 流体を噴出することで ユニット容器内に均等に流体を送ることができる。 [0013] For this reason, a large number of fluid ejection hole forces provided evenly in the vertical and horizontal directions By ejecting the fluid, the fluid can be uniformly fed into the unit container.
[0014] 上記目的を達成するための請求項 4に係る本発明の金属濾過装置は、ユニット容 器内に一対の側板を設け、一対の側板の間に長尺状のセラミックチューブを取り付 け、ユニット容器内に金属溶湯を供給する入湯口を設け、セラミックチューブを通過し た金属溶湯を排出する出湯口を側板に設け、出湯口から一対の側板の間における ユニット容器内に流体を圧送するポンプ機構を備えたことを特徴とする。
[0015] このため、ポンプ機構により出湯ロカもユニット容器内に流体を圧送することで、流 体を押し込んでセラミックチューブの表層に付着した介在物を除去する。 [0014] In order to achieve the above object, the metal filtering device of the present invention according to claim 4 is provided with a pair of side plates in the unit container, and a long ceramic tube is attached between the pair of side plates. A pump mechanism that has a hot water inlet that supplies molten metal in the unit container, a hot water outlet that discharges the molten metal that has passed through the ceramic tube is provided on the side plate, and that pumps fluid into the unit container between the hot water outlet and the pair of side plates. It is provided with. [0015] Therefore, the pumping mechanism also pumps the fluid into the unit container by the pumping loca to push in the fluid and remove the inclusions adhering to the surface layer of the ceramic tube.
[0016] そして、請求項 5に係る本発明の金属濾過装置は、請求項 4に記載の金属濾過装 置において、ユニット容器には出湯口につながる出湯通路が設けられ、出湯通路に は、不活性ガスを出湯通路内に供給すると共に出湯通路内に供給された不活性ガ スをユニット容器内に押し込むピストン部材が往復移動自在に設けられていることを 特徴とする。 [0016] The metal filtration device of the present invention according to claim 5 is the metal filtration device according to claim 4, wherein the unit container is provided with a hot water outlet passage connected to the hot water outlet, and the hot water passage is not A piston member for supplying the active gas into the hot water passage and pushing the inert gas supplied into the hot water passage into the unit container is provided to be reciprocally movable.
[0017] このため、不活性ガスを押し込むことでセラミックチューブの表層に付着した介在物 を除去する。 [0017] Therefore, inclusions adhering to the surface layer of the ceramic tube are removed by pushing an inert gas.
発明の効果 The invention's effect
[0018] 本発明の金属濾過装置は、構造を複雑にすることなくセラミックチューブの洗浄を 均一にし力も容易に行うことができる金属溶湯装置となる。 [0018] The metal filtration device of the present invention is a molten metal device that can easily clean the ceramic tube and easily perform the force without complicating the structure.
図面の簡単な説明 Brief Description of Drawings
[0019] [図 1]本発明の第 1実施形態例に係る金属濾過装置の側断面図である。 FIG. 1 is a side sectional view of a metal filtering device according to a first embodiment of the present invention.
[図 2]図 1中の Π— II線矢視図である。 FIG. 2 is a view taken along the line II-II in FIG.
[図 3]図 1中の III III線矢視図である。 FIG. 3 is a view taken along line III-III in FIG.
[図 4]本発明の第 2実施形態例に係る金属濾過装置の側断面図である。 FIG. 4 is a side sectional view of a metal filtering device according to a second embodiment of the present invention.
[図 5]図 4中の V— V線矢視図である。 FIG. 5 is a view taken along line V—V in FIG.
[図 6]図 4中の VI— VI線矢視図である。 FIG. 6 is a view taken along the line VI—VI in FIG.
発明を実施するための最良の形態 BEST MODE FOR CARRYING OUT THE INVENTION
[0020] 図 1には本発明の第 1実施形態例に係る金属濾過装置の側断面、図 2には図 1中 の II II線矢視、図 3には図 1中の III III線矢視を示してある。 [0020] Fig. 1 is a side cross-sectional view of a metal filtering device according to a first embodiment of the present invention, Fig. 2 is a view taken along line II-II in Fig. 1, and Fig. 3 is a line III-III in Fig. 1. Visually shown.
[0021] 金属濾過装置 1は、ユニット容器 2内にフィルタカセット 3が備えられ、入湯口 4から 金属溶湯 (例えば、アルミニウム溶湯)が供給される。入湯口 4から供給されたアルミThe metal filtration device 1 is provided with a filter cassette 3 in a unit container 2, and a molten metal (for example, molten aluminum) is supplied from a hot water inlet 4. Aluminum supplied from entrance 4
-ゥム溶湯はフィルタカセット 3を流通することで濾過されて出湯口 5から出湯され铸 型に送られる。 The rum melt is filtered through the filter cassette 3 and discharged from the tap 5 and sent to the bowl.
[0022] フィルタカセット 3は、一対の側板 10 (入湯側側板)、 11 (出湯側側板)を備え、側板 10、 11は炭化珪素質耐火物プレートで形成されている。側板 10、 11の間には複数
本(図示例では 5段で 28本)の長尺状のセラミックチューブ 13が設けられ、セラミック チューブ 13はアルミナ質ポーラスチューブで形成されている。セラミックチューブ 13 の両端はそれぞれ側板 10、 11に固定され、セラミックチューブ 13の一方(図 1中右 側)の開口端部が出湯口 5側の側板 11に固定されて 、る。 [0022] The filter cassette 3 includes a pair of side plates 10 (hot water side plates) and 11 (outlet side plates), and the side plates 10 and 11 are formed of silicon carbide refractory plates. Multiple between side plates 10, 11 This is a long ceramic tube 13 (in the example shown, 28 in 5 stages), and the ceramic tube 13 is formed of an alumina porous tube. Both ends of the ceramic tube 13 are fixed to the side plates 10 and 11, respectively, and the opening end of one side of the ceramic tube 13 (right side in FIG. 1) is fixed to the side plate 11 on the outlet 5 side.
[0023] セラミックチューブ 13としては、アルミナ質、炭化珪素質のものが挙げられる力 熱 間強度ゃ耐アルミ反応性の観点から、アルミナ質ポーラスチューブ製のセラミックチュ ーブが好ましい。 [0023] The ceramic tube 13 is made of alumina or silicon carbide. From the viewpoint of hot strength and aluminum reactivity, a ceramic tube made of an alumina porous tube is preferred.
[0024] 入湯口 4から供給されたアルミニウム溶湯は、複数本のセラミックチューブ 13の外周 面力 筒状の内部に送られて濾過され、出湯口 5側の側板 11から出湯口 5に送られ て出湯される。 [0024] The molten aluminum supplied from the hot water inlet 4 is sent to the outer peripheral surface of the plurality of ceramic tubes 13 in a cylindrical shape, filtered, and sent from the side plate 11 on the hot water outlet 5 side to the hot water outlet 5. Hot water is poured out.
[0025] 一方、ユニット容器 2の底部には流体噴出プレートとしてのガス噴出プレート 15が 設けられ、ガス噴出プレート 15はセラミックチューブ 13の配置部位の略全面にわたる 大きさになっている。ガス噴出プレート 15の上面には多数の流体噴出孔としてのガス 噴出孔 16が設けられ、ガス噴出孔 16は、図 3に示すように、縦横で均等に設けられ ている。尚、ガス噴出孔 16にポーラスのカーボンを埋めることも可能である。ポーラス のカーボンを埋めることで、より微細な泡を噴出させることができる。 On the other hand, a gas ejection plate 15 as a fluid ejection plate is provided at the bottom of the unit container 2, and the gas ejection plate 15 has a size over substantially the entire area where the ceramic tube 13 is disposed. A large number of gas ejection holes 16 as fluid ejection holes are provided on the upper surface of the gas ejection plate 15, and the gas ejection holes 16 are equally provided vertically and horizontally as shown in FIG. 3. It is also possible to fill the gas ejection holes 16 with porous carbon. By filling the porous carbon, finer bubbles can be ejected.
[0026] ガス噴出プレート 15は、例えば、平板状のポーラス板であり、ガス噴出孔 16はブラ グ状とされている。そして、プラグ状のガス噴出孔 16はユニット容器 2の内部力も取り 付けが可能で、ガス噴出孔 16を交換することによりガス噴出プレート 15は再利用可 能となっている。 [0026] The gas ejection plate 15 is, for example, a flat porous plate, and the gas ejection holes 16 are in the shape of a brag. The plug-like gas ejection holes 16 can also attach the internal force of the unit container 2, and the gas ejection plate 15 can be reused by replacing the gas ejection holes 16.
[0027] また、ガス噴出孔 16の数や配置は任意であり、図示例に限定されるものではない。 [0027] The number and arrangement of the gas ejection holes 16 are arbitrary and are not limited to the illustrated example.
例えば、図に示すように、最下段にあるセラミックチューブ 13の直下にガス噴出孔 16 が存在してもよぐ最下段にあるセラミックチューブ 13同士の間に位置してガス噴出 孔 16が存在してもよい。更に、セラミックチューブ 13の直下及びセラミックチューブ 1 3同士の間のそれぞれに位置してガス噴出孔 16が存在してもよい。 For example, as shown in the figure, there may be gas ejection holes 16 located between the ceramic tubes 13 at the lowest level, even though the gas ejection holes 16 may exist immediately below the ceramic tube 13 at the lowest level. May be. Furthermore, gas ejection holes 16 may be located directly below the ceramic tube 13 and between the ceramic tubes 13.
[0028] 図 2に示すように、フィルタカセット 3の側部には流体供給手段としての洗浄ガス供 給管 17が上下方向にそれぞれ設けられ、洗浄ガス供給管 17の下端はガス噴出プレ ート 15に接続されている。洗浄ガス供給管 17の上端はユニット容器 2の蓋 18を貫通
して外部に臨み、図示しない洗浄ガス供給源に接続される。洗浄ガス供給管 17に送 られる流体としての洗浄ガスは、例えば、不活性ガスであるアルゴンガスが使用され る。洗浄ガスとしては窒素ガスを用いることも可能である。 As shown in FIG. 2, a cleaning gas supply pipe 17 as a fluid supply means is provided in the vertical direction at the side of the filter cassette 3, and the lower end of the cleaning gas supply pipe 17 is a gas ejection plate. Connected to 15. The upper end of the cleaning gas supply pipe 17 penetrates the lid 18 of the unit container 2 Then, it faces the outside and is connected to a cleaning gas supply source (not shown). For example, argon gas, which is an inert gas, is used as the cleaning gas as a fluid sent to the cleaning gas supply pipe 17. Nitrogen gas can also be used as the cleaning gas.
[0029] 洗浄ガス供給管 17にアルゴンガスを供給することにより、ガス噴出プレート 15を介 して多数のガス噴出孔 16からアルゴンガスがユニット容器 2内(フィルタカセット 3内) に多数の気泡となって送られる。 [0029] By supplying argon gas to the cleaning gas supply pipe 17, argon gas flows from the numerous gas ejection holes 16 through the gas ejection plate 15 into the unit container 2 (inside the filter cassette 3). Will be sent.
[0030] 上述した金属濾過装置 1では、入湯口 4からフィルタカセット 3内に供給されたアル ミニゥム溶湯は、複数本のセラミックチューブ 13で形成された複雑な流路を通過する と共にセラミックチューブ 13の外周面力も筒状の内部に送られて濾過されて異物が 除去される。濾過されて正常な状態となったアルミニウム溶湯は出湯口 5側の側板 11 力 出湯口 5に送られて出湯される。濾過に際して除去された異物はセラミックチュー ブ 13の表層に堆積し、アルミニウム溶湯の濾過が繰り返されると、セラミックチューブ 13の表層に堆積した異物により所定の流量が確保できなくなる。このため、所定の期 間毎にフィルタカセット 3の洗浄が行われる。 In the metal filtration device 1 described above, the molten aluminum supplied from the hot water inlet 4 into the filter cassette 3 passes through a complicated flow path formed by a plurality of ceramic tubes 13 and the ceramic tubes 13 The outer peripheral surface force is also sent to the inside of the cylinder and filtered to remove foreign matter. The molten aluminum that has been filtered and is in a normal state is sent to the side plate 11 force outlet 5 on the outlet 5 side and discharged. Foreign matter removed during filtration accumulates on the surface layer of the ceramic tube 13, and repeated filtration of the molten aluminum prevents a predetermined flow rate from being secured by foreign matter deposited on the surface layer of the ceramic tube 13. For this reason, the filter cassette 3 is cleaned at predetermined intervals.
[0031] フィルタカセット 3の洗浄に際しては、洗浄ガス供給管 17からアルゴンガスを所定圧 力で供給し、ガス噴出プレート 15を介して多数のガス噴出孔 16からアルゴンガスを セラミックチューブ 13に向けて噴出させる。アルゴンガスは多数の微小な気泡となつ てセラミックチューブ 13の表層に堆積した異物を除去し、異物を浮き上がらせる。ガ ス噴出プレート 15はセラミックチューブ 13の配置部位の略全面にわたる大きさになつ ており、ガス噴出孔 16は縦横で均等に設けられているため、セラミックチューブ 13の 全体にわたり均等にアルゴンガスの気泡が送られ、セラミックチューブ 13の洗浄が実 施される。このため、アルミニウム溶湯の流量が確保され、所望の濾過を長期にわた り実施することができる。 When cleaning the filter cassette 3, argon gas is supplied from the cleaning gas supply pipe 17 at a predetermined pressure, and the argon gas is directed to the ceramic tube 13 from the many gas ejection holes 16 via the gas ejection plate 15. Erupt. The argon gas becomes a large number of minute bubbles, removes foreign matter deposited on the surface of the ceramic tube 13, and lifts up the foreign matter. Since the gas ejection plate 15 has a size covering almost the entire surface of the ceramic tube 13 and the gas ejection holes 16 are evenly provided in the vertical and horizontal directions, bubbles of argon gas are evenly distributed over the entire ceramic tube 13. Is sent, and the ceramic tube 13 is cleaned. For this reason, the flow rate of the molten aluminum is ensured, and desired filtration can be carried out over a long period of time.
[0032] 従って、上述した金属濾過装置 1では、複数本のセラミックチューブ 13に対して均 等に表層の洗浄を行うことができ、構造を複雑にすることなく複数のセラミックチュー ブ 13の洗浄を均一にしかも容易に行うことができる金属濾過装置 1とすることができ る。 Therefore, in the metal filtration device 1 described above, the surface layer can be evenly cleaned with respect to the plurality of ceramic tubes 13, and the plurality of ceramic tubes 13 can be cleaned without complicating the structure. The metal filtration device 1 can be made uniformly and easily.
[0033] 尚、アルゴンガスは常温で供給されると、急冷によりセラミックチューブ 13に熱応力
が働く。このため、セラミックチューブ 13は耐熱衝撃性に優れた材質が使用されると 共に、側板 10、 11への固定も熱衝撃を吸収する構造とされている。また、ガス噴出プ レート 15も耐熱衝撃性に優れた材質が使用される。耐熱衝撃性の特性値が高い材 料としては、例えば、窒化珪素系のファインセラミックス、窒化珪素結合炭化珪素質、 カーボン等が挙げられる。 [0033] When argon gas is supplied at room temperature, thermal stress is applied to the ceramic tube 13 by rapid cooling. Work. For this reason, the ceramic tube 13 is made of a material having excellent thermal shock resistance, and is fixed to the side plates 10 and 11 so as to absorb the thermal shock. The gas ejection plate 15 is also made of a material with excellent thermal shock resistance. Examples of the material having a high thermal shock resistance characteristic value include silicon nitride-based fine ceramics, silicon nitride-bonded silicon carbide, and carbon.
[0034] 図 4乃至図 6に基づいて本発明の第 2実施形態例を説明する。 A second embodiment of the present invention will be described based on FIGS. 4 to 6.
[0035] 図 4には本発明の第 2実施形態例に係る金属濾過装置の側断面、図 5には図 4中 の V—V線矢視、図 6には図 4中の VI— VI線矢視を示してある。 [0035] Fig. 4 is a side cross-sectional view of a metal filtration device according to a second embodiment of the present invention, Fig. 5 is a view taken along line V-V in Fig. 4, and Fig. 6 is VI-VI in Fig. 4. A line arrow view is shown.
[0036] 金属濾過装置 21は、ユニット容器 22内にフィルタカセット 23が備えられ、入湯口 2 4から金属溶湯 (例えば、アルミニウム溶湯)が供給される。入湯口 24から供給された アルミニウム溶湯はフィルタカセット 23を流通することで濾過されて出湯口 25から出 湯され铸型に送られる。ユニット容器 22には出湯口 25につながる出湯通路 26が設 けられ、出湯通路 26にはユニット容器 22内に流体としてのアルゴンガスを圧送する ポンプ機構 27が備えられて 、る。入湯口 24及び出湯口 25はユニット容器 22の一方 側の側壁部に設けられて 、る。 [0036] The metal filtration device 21 is provided with a filter cassette 23 in a unit container 22, and a molten metal (for example, molten aluminum) is supplied from a hot water inlet 24. The molten aluminum supplied from the hot water inlet 24 is filtered through the filter cassette 23, discharged from the hot water outlet 25, and sent to the bowl. The unit container 22 is provided with a hot water passage 26 connected to the hot water outlet 25, and the hot water passage 26 is provided with a pump mechanism 27 that pumps argon gas as a fluid into the unit container 22. The hot water inlet 24 and the hot water outlet 25 are provided on one side wall portion of the unit container 22.
[0037] フィルタカセット 23は、一対の側板 30 (入湯側側板、出湯側側板)、 31を備え、側 板 30、 31は炭化珪素質耐火物プレートで形成されている。側板 30、 31の間には複 数本(図示例では 4段で 18本)の長尺状のセラミックチューブ 33が設けられ、セラミツ クチューブ 33はアルミナ質ポーラスチューブで形成されて!ヽる。セラミックチューブ 3 3の両端はそれぞれ側板 30、 31に固定され、セラミックチューブ 33の一方(図 4中左 側)の開口端部が入湯口 24及び出湯口 25側の側板 30に固定されて 、る。 [0037] The filter cassette 23 includes a pair of side plates 30 (a hot water side plate and a hot water side plate) 31 and the side plates 30 and 31 are formed of a silicon carbide refractory plate. A plurality of long ceramic tubes 33 (18 in four stages in the illustrated example) are provided between the side plates 30 and 31, and the ceramic tube 33 is formed of an alumina porous tube. Both ends of the ceramic tube 33 are fixed to the side plates 30 and 31, respectively, and the opening end of one side of the ceramic tube 33 (the left side in FIG. 4) is fixed to the side plate 30 on the hot water inlet 24 and outlet 25 side. .
[0038] セラミックチューブ 33としては、アルミナ質、炭化珪素質のものが挙げられる力 熱 間強度ゃ耐アルミ反応性の観点から、アルミナ質ポーラスチューブ製のセラミックチュ ーブが好ましい。 [0038] The ceramic tube 33 is made of alumina or silicon carbide. From the viewpoints of hot strength and aluminum reactivity, a ceramic tube made of an alumina porous tube is preferred.
[0039] 入湯口 24からユニット容器 22の内部に供給されたアルミニウム溶湯は、複数本の セラミックチューブ 33の外周面力も筒状の内部に送られて濾過され、側板 30から出 湯通路 26を通って出湯口 25に送られて出湯される。 [0039] The molten aluminum supplied to the inside of the unit container 22 from the hot water inlet 24 is also sent to the cylindrical inside through the outer peripheral surface force of the plurality of ceramic tubes 33 and filtered, and passes through the hot water passage 26 from the side plate 30. The hot water is sent to the hot water outlet 25 and discharged.
[0040] 一方、出湯通路 26にはユニット容器 22内にアルゴンガスを圧送するポンプ機構 27
が備えられている。ポンプ機構 27はシリンダとしての出湯通路 26内を摺動(図 4中上 下方向)するピストン部材 35を備え、ピストン部材 35には支持板 37に支持される軸 部 36が備えられている。ピストン部材 35及び支持板 37は図示しないァクチユエータ により昇降自在 (往復移動自在)とされている。ピストン部材 35及び支持板 37は、ァ ルミ-ゥム溶湯の濾過時には出湯口 25の上側の出湯通路 26に移動されている。支 持板 37を出湯口 25の上側の出湯通路 26に固定し、ピストン部材 35を昇降させる構 成とすることも可能である。 On the other hand, a pump mechanism 27 that pumps argon gas into the unit container 22 in the hot water passage 26. Is provided. The pump mechanism 27 includes a piston member 35 that slides (upward and downward in FIG. 4) in a hot water supply passage 26 as a cylinder. The piston member 35 includes a shaft portion 36 that is supported by a support plate 37. The piston member 35 and the support plate 37 can be moved up and down (reciprocated) by an actuator (not shown). The piston member 35 and the support plate 37 are moved to the hot water passage 26 on the upper side of the hot water outlet 25 at the time of filtering the molten aluminum. The support plate 37 may be fixed to the hot water passage 26 on the upper side of the hot water outlet 25 and the piston member 35 may be moved up and down.
[0041] 図 4に示すように、ピストン部材 35の軸部 36は加熱蓋 51の支持穴 52を貫通して配 され、軸部 36は支持穴 52に設けられた支持部 53に摺動自在に支持されている。軸 部 36は中空状とされ、中空部からピストン部材 35を通して出湯通路 26内にアルゴン ガスが供給される。洗浄時におけるピストン部材 35及び支持板 37は、出湯口 25の 下側の出湯通路 26に移動されている。 As shown in FIG. 4, the shaft portion 36 of the piston member 35 is disposed through the support hole 52 of the heating lid 51, and the shaft portion 36 is slidable on the support portion 53 provided in the support hole 52. It is supported by. The shaft portion 36 is hollow, and argon gas is supplied from the hollow portion through the piston member 35 into the hot water passage 26. The piston member 35 and the support plate 37 at the time of cleaning are moved to the hot water passage 26 below the hot water outlet 25.
[0042] 尚、不活性ガスであるアルゴンガスに限らず窒素ガスを用いることも可能である。 [0042] Note that not only argon gas, which is an inert gas, but also nitrogen gas can be used.
[0043] 軸部 36からアルゴンガスを送り込むことにより出湯通路 26内にアルゴンガスが供給 され、ピストン部材 35を往復摺動させることにより、出湯通路 26内に供給されたアル ゴンガスがユニット容器 22内(フィルタカセット 23内)に圧送される。 [0043] By sending argon gas from the shaft 36, argon gas is supplied into the hot water passage 26, and by reciprocatingly sliding the piston member 35, the argon gas supplied into the hot water passage 26 is moved into the unit container 22. It is pumped (in the filter cassette 23).
[0044] 上述した金属濾過装置 21では、入湯口 24からフィルタカセット 23内に供給された アルミニウム溶湯は、複数本のセラミックチューブ 33で形成された複雑な流路を通過 すると共にセラミックチューブ 33の外周面力も筒状の内部に送られて濾過されて介 在物が除去される。濾過されて清浄な状態にされたアルミニウム溶湯は出湯口 25側 の側板 30から出湯通路 26を通って出湯口 25に送られて出湯される。この時、ピスト ン部材 35及び支持板 37は出湯口 25の上側の出湯通路 26に移動されているため、 ピストン部材 35及び支持板 37にアルミニウム溶湯の出湯が阻害されることはない。 [0044] In the metal filtration device 21 described above, the molten aluminum supplied from the hot water inlet 24 into the filter cassette 23 passes through a complicated flow path formed by a plurality of ceramic tubes 33, and the outer periphery of the ceramic tube 33 Surface force is also sent to the inside of the cylinder and filtered to remove inclusions. The molten aluminum that has been filtered and cleaned is sent from the side plate 30 on the outlet 25 side to the outlet 25 through the outlet passage 26 and discharged. At this time, since the piston member 35 and the support plate 37 are moved to the hot water passage 26 above the hot water outlet 25, the piston member 35 and the support plate 37 are not hindered from discharging the molten aluminum.
[0045] 濾過に際して除去された介在物はセラミックチューブ 33の表層に堆積し、アルミ- ゥム溶湯の濾過が繰り返されると、セラミックチューブ 33の表層に堆積した介在物に より所定の流量が確保できなくなる。このため、所定の期間毎にフィルタカセット 23の 洗浄が行われる。 [0045] Inclusions removed during the filtration are deposited on the surface layer of the ceramic tube 33. When filtration of the molten aluminum is repeated, a predetermined flow rate can be secured by the inclusions deposited on the surface layer of the ceramic tube 33. Disappear. For this reason, the filter cassette 23 is cleaned at predetermined intervals.
[0046] フィルタカセット 23 (セラミックチューブ 33)の洗浄に際しては、ピストン部材 35及び
支持板 37を出湯口 25の下側の出湯通路 26に移動させ、ポンプ機構 27の軸部 36か らアルゴンガスを送り込むことにより出湯通路 26内にアルゴンガスを供給し、ピストン 部材 35を往復摺動させることにより、出湯通路 26内に供給されたアルゴンガスをュ ニット容器 22内に圧送する。ユニット容器 22内を加圧することにより、セラミックチュ ーブ 33の内部のアルミニウム溶湯が動き、セラミックチューブ 33の内部で逆流現象 が生じてセラミックチューブ 33の表層に堆積した介在物が浮き上がる。これにより、セ ラミックチューブ 33の表層が洗浄された状態になり、アルミニウム溶湯の流量が確保 されて長期にわたり流量を確保することができる。 [0046] When cleaning the filter cassette 23 (ceramic tube 33), the piston member 35 and The support plate 37 is moved to the hot water outlet passage 26 below the hot water outlet 25, and argon gas is supplied from the shaft portion 36 of the pump mechanism 27 to supply argon gas into the hot water outlet passage 26, and the piston member 35 is slid back and forth. By moving it, the argon gas supplied into the hot water outlet passage 26 is pumped into the unit container 22. By pressurizing the inside of the unit container 22, the molten aluminum inside the ceramic tube 33 moves, a back flow phenomenon occurs inside the ceramic tube 33, and inclusions deposited on the surface layer of the ceramic tube 33 rise. As a result, the surface layer of the ceramic tube 33 is cleaned, the flow rate of the molten aluminum is ensured, and the flow rate can be secured over a long period of time.
[0047] 尚、ピストン部材 35の往復摺動によりユニット容器 22内(フィルタカセット内)に圧力 をかける構成としてもよいが、ピストン部材 35と本体(出湯通路 26)とに高いシール性 が要求されるため、ピストン部材 35の最下部面に小さな空気孔を多数設け、空気孔 力ものアルゴンガスのガス圧によりユニット容器 22内に圧力を加える構成とすることが 望ましい。 [0047] Although a configuration may be adopted in which pressure is applied to the unit container 22 (inside the filter cassette) by reciprocating sliding of the piston member 35, high sealing performance is required for the piston member 35 and the main body (tapping passage 26). Therefore, it is desirable to provide a structure in which a large number of small air holes are provided in the lowermost surface of the piston member 35 and the pressure is applied in the unit container 22 by the gas pressure of argon gas having a high air hole capacity.
[0048] 従って、上述した金属濾過装置 21では、複数本のセラミックチューブ 33に対して均 等に表層の洗浄を行うことができ、構造を複雑にすることなく複数のセラミックチュー ブ 33の洗浄を均一にしかも容易に行うことができる金属溶湯装置 21とすることができ る。 [0048] Therefore, in the metal filtration device 21 described above, the surface layer of the plurality of ceramic tubes 33 can be evenly cleaned, and the plurality of ceramic tubes 33 can be cleaned without complicating the structure. The molten metal device 21 can be made uniformly and easily.
[0049] 尚、上述した各実施形態例では、金属溶湯としてアルミニウム溶湯を濾過する金属 濾過装置を例に挙げて説明したが、アルミニウム合金溶湯や亜鉛溶湯等の他の金属 溶湯を濾過する金属濾過装置とすることが可能である。 [0049] In each of the above-described embodiments, the description has been given by taking as an example a metal filtration device that filters molten aluminum as the molten metal, but metal filtration that filters other molten metal such as molten aluminum alloy or molten zinc. It can be a device.
産業上の利用可能性 Industrial applicability
[0050] 本発明は、金属溶湯の濾過を行う金属濾過装置の産業分野で利用することができ る。
[0050] The present invention can be used in the industrial field of metal filtration devices for filtering molten metal.
Claims
[1] ユニット容器内に一対の側板を設け、一対の側板の間に長尺状のセラミックチュー ブを取り付け、ユニット容器内に金属溶湯を供給する入湯口を設け、セラミックチュー ブを通過した金属溶湯を排出する出湯口を側板に設け、セラミックチューブの下側に おけるユニット容器の底部に多数の流体噴出孔を有する流体噴出プレートを備え、 流体噴出孔から流体を噴出させるための流体供給手段を流体噴出プレートに接続し たことを特徴とする金属濾過装置。 [1] A pair of side plates is provided in the unit container, a long ceramic tube is attached between the pair of side plates, a hot water inlet for supplying the molten metal is provided in the unit container, and the molten metal passes through the ceramic tube. Provided with a fluid outlet plate having a number of fluid ejection holes at the bottom of the unit container at the bottom of the ceramic tube, and fluid supply means for ejecting fluid from the fluid ejection holes. A metal filtration device characterized by being connected to an ejection plate.
[2] 請求項 1に記載の金属濾過装置において、 [2] In the metal filtration device according to claim 1,
流体噴出プレートは、ユニット容器の底面のセラミックチューブの配置部位の略全 面にわたる大きさである The fluid ejection plate has a size that covers almost the entire area of the ceramic tube at the bottom of the unit container.
ことを特徴とする金属濾過装置。 A metal filtration device characterized by that.
[3] 請求項 2に記載の金属濾過装置において、 [3] In the metal filtration device according to claim 2,
流体噴出プレートの多数の流体噴出孔は、縦横で均等に設けられている ことを特徴とする金属濾過装置。 A metal filtration device characterized in that a large number of fluid ejection holes of the fluid ejection plate are provided uniformly in the vertical and horizontal directions.
[4] ユニット容器内に一対の側板を設け、一対の側板の間に長尺状のセラミックチュー ブを取り付け、ユニット容器内に金属溶湯を供給する入湯口を設け、セラミックチュー ブを通過した金属溶湯を排出する出湯口を側板に設け、出湯口側力 一対の側板 の間におけるユニット容器内に流体を圧送するポンプ機構を備えたことを特徴とする 金属濾過装置。 [4] A pair of side plates is provided in the unit container, a long ceramic tube is attached between the pair of side plates, a hot water inlet for supplying the molten metal is provided in the unit container, and the molten metal that has passed through the ceramic tube is provided. A metal filtration device comprising a pump mechanism for providing a hot water outlet for discharging water to a side plate and pumping a fluid into a unit container between the hot water outlet side force pair of side plates.
[5] 請求項 4に記載の金属濾過装置において、 [5] In the metal filtration device according to claim 4,
ユニット容器には出湯口につながる出湯通路が設けられ、出湯通路には、不活性 ガスを出湯通路内に供給すると共に出湯通路内に供給された不活性ガスをユニット 容器内に押し込むピストン部材が往復移動自在に設けられて 、る The unit container is provided with a hot water passage connected to the hot water outlet, and a piston member for supplying the inert gas into the hot water passage and pushing the inert gas supplied into the hot water passage into the unit container reciprocates in the hot water passage. It is provided movably
ことを特徴とする金属濾過装置。
A metal filtration device characterized by that.
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JP2006-027694 | 2006-02-03 | ||
JP2006027694A JP5185502B2 (en) | 2006-02-03 | 2006-02-03 | Metal filtration device |
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WO2007088937A1 true WO2007088937A1 (en) | 2007-08-09 |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2015008660A1 (en) * | 2013-07-19 | 2015-01-22 | 三井金属鉱業株式会社 | Apparatus for installing metal melt filtration unit |
CN110923464A (en) * | 2019-11-27 | 2020-03-27 | 湖州神龙铝业有限公司 | High-efficient ground aluminium ingot production is with aluminium liquid filtration purification device |
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JP5779389B2 (en) | 2011-04-22 | 2015-09-16 | 三井金属鉱業株式会社 | Metal melt filter |
JP7510030B1 (en) | 2023-11-30 | 2024-07-02 | 三井金属鉱業株式会社 | Molten metal filtration unit and molten metal filtration device having said filtration unit |
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JPH04198433A (en) * | 1990-11-29 | 1992-07-17 | Mitsui Mining & Smelting Co Ltd | Method for removing clogging of filtering unit in filtering apparatus for molten metal |
JPH05195096A (en) * | 1992-01-21 | 1993-08-03 | Mitsui Mining & Smelting Co Ltd | Filtering device using plate-like filter |
JPH073348A (en) * | 1993-06-18 | 1995-01-06 | Mitsui Mining & Smelting Co Ltd | Device for filtering molten metal |
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WO2015008660A1 (en) * | 2013-07-19 | 2015-01-22 | 三井金属鉱業株式会社 | Apparatus for installing metal melt filtration unit |
CN110923464A (en) * | 2019-11-27 | 2020-03-27 | 湖州神龙铝业有限公司 | High-efficient ground aluminium ingot production is with aluminium liquid filtration purification device |
CN110923464B (en) * | 2019-11-27 | 2021-08-27 | 沈阳市东盛金属制品有限公司 | High-efficient ground aluminium ingot production is with aluminium liquid filtration purification device |
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