BE461667A - - Google Patents
Info
- Publication number
- BE461667A BE461667A BE461667DA BE461667A BE 461667 A BE461667 A BE 461667A BE 461667D A BE461667D A BE 461667DA BE 461667 A BE461667 A BE 461667A
- Authority
- BE
- Belgium
- Prior art keywords
- fluid
- coolant
- flotation
- particles
- impurities
- Prior art date
Links
- 239000012530 fluid Substances 0.000 claims description 127
- 238000005188 flotation Methods 0.000 claims description 106
- 239000003921 oil Substances 0.000 claims description 55
- 238000001816 cooling Methods 0.000 claims description 54
- 239000000463 material Substances 0.000 claims description 41
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 40
- 239000012535 impurity Substances 0.000 claims description 39
- 239000002826 coolant Substances 0.000 claims description 38
- 239000002245 particle Substances 0.000 claims description 38
- 239000007787 solid Substances 0.000 claims description 38
- 238000000034 method Methods 0.000 claims description 30
- 239000000839 emulsion Substances 0.000 claims description 27
- 238000003754 machining Methods 0.000 claims description 25
- 239000007788 liquid Substances 0.000 claims description 21
- 239000000344 soap Substances 0.000 claims description 20
- 239000002699 waste material Substances 0.000 claims description 19
- 230000001050 lubricating Effects 0.000 claims description 18
- 238000005352 clarification Methods 0.000 claims description 16
- 239000000203 mixture Substances 0.000 claims description 14
- 238000004140 cleaning Methods 0.000 claims description 13
- 239000006260 foam Substances 0.000 claims description 13
- 238000007792 addition Methods 0.000 claims description 11
- 239000003507 refrigerant Substances 0.000 claims description 11
- 238000005273 aeration Methods 0.000 claims description 10
- 238000003860 storage Methods 0.000 claims description 10
- 239000003795 chemical substances by application Substances 0.000 claims description 8
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 8
- 239000000194 fatty acid Substances 0.000 claims description 8
- 150000004665 fatty acids Chemical class 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 8
- 238000000926 separation method Methods 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 7
- 239000007864 aqueous solution Substances 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 239000002923 metal particle Substances 0.000 claims description 5
- 239000003760 tallow Substances 0.000 claims description 5
- 150000007513 acids Chemical class 0.000 claims description 4
- 238000010908 decantation Methods 0.000 claims description 4
- 230000035943 smell Effects 0.000 claims description 3
- 230000001052 transient Effects 0.000 claims description 3
- 150000002430 hydrocarbons Chemical class 0.000 claims description 2
- 238000007885 magnetic separation Methods 0.000 claims description 2
- 101710024720 CCT5 Proteins 0.000 claims 1
- 101710030983 RNF138 Proteins 0.000 claims 1
- 101710029702 TICAM1 Proteins 0.000 claims 1
- 101710021425 TRIM69 Proteins 0.000 claims 1
- 102100003447 TRIM69 Human genes 0.000 claims 1
- 150000001768 cations Chemical class 0.000 claims 1
- 238000011068 load Methods 0.000 claims 1
- 239000006249 magnetic particle Substances 0.000 claims 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims 1
- 229910052700 potassium Inorganic materials 0.000 claims 1
- 239000011591 potassium Substances 0.000 claims 1
- KEAYESYHFKHZAL-UHFFFAOYSA-N sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 claims 1
- 239000011734 sodium Substances 0.000 claims 1
- 229910052708 sodium Inorganic materials 0.000 claims 1
- 239000011343 solid material Substances 0.000 claims 1
- 238000003756 stirring Methods 0.000 claims 1
- 210000000689 upper leg Anatomy 0.000 claims 1
- 239000003153 chemical reaction reagent Substances 0.000 description 50
- 235000019198 oils Nutrition 0.000 description 50
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 20
- 229910000831 Steel Inorganic materials 0.000 description 15
- 239000010959 steel Substances 0.000 description 15
- 238000011084 recovery Methods 0.000 description 14
- 238000000227 grinding Methods 0.000 description 13
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 12
- 239000010949 copper Substances 0.000 description 12
- 229910052802 copper Inorganic materials 0.000 description 12
- 238000003379 elimination reaction Methods 0.000 description 12
- 229910052742 iron Inorganic materials 0.000 description 10
- 238000000746 purification Methods 0.000 description 10
- 229910052782 aluminium Inorganic materials 0.000 description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminum Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 9
- 239000000470 constituent Substances 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- 239000000047 product Substances 0.000 description 8
- 239000011780 sodium chloride Substances 0.000 description 8
- 239000000126 substance Substances 0.000 description 8
- 238000005520 cutting process Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 239000007789 gas Substances 0.000 description 7
- 238000005096 rolling process Methods 0.000 description 7
- 150000003839 salts Chemical class 0.000 description 7
- CSCPPACGZOOCGX-UHFFFAOYSA-N acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 6
- 150000002739 metals Chemical class 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 239000002904 solvent Substances 0.000 description 6
- 229910000906 Bronze Inorganic materials 0.000 description 5
- 238000005296 abrasive Methods 0.000 description 5
- 239000010974 bronze Substances 0.000 description 5
- 230000000249 desinfective Effects 0.000 description 5
- 239000011521 glass Substances 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 238000005461 lubrication Methods 0.000 description 5
- 239000004576 sand Substances 0.000 description 5
- 239000010802 sludge Substances 0.000 description 5
- VZGDMQKNWNREIO-UHFFFAOYSA-N Carbon tetrachloride Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 238000005553 drilling Methods 0.000 description 4
- 229920001971 elastomer Polymers 0.000 description 4
- 239000003925 fat Substances 0.000 description 4
- 239000010419 fine particle Substances 0.000 description 4
- 239000004519 grease Substances 0.000 description 4
- 238000003801 milling Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000006011 modification reaction Methods 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 230000000737 periodic Effects 0.000 description 4
- 239000005060 rubber Substances 0.000 description 4
- 239000000725 suspension Substances 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- 241000894006 Bacteria Species 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 125000000129 anionic group Chemical group 0.000 description 3
- 230000001580 bacterial Effects 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 3
- 230000000875 corresponding Effects 0.000 description 3
- 239000010730 cutting oil Substances 0.000 description 3
- -1 etc. Substances 0.000 description 3
- 239000000314 lubricant Substances 0.000 description 3
- 239000010687 lubricating oil Substances 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 238000005554 pickling Methods 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 206010000496 Acne Diseases 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N HCl Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 241000282941 Rangifer tarandus Species 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 230000003213 activating Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 150000004985 diamines Chemical class 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- WSFSSNUMVMOOMR-UHFFFAOYSA-N formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 125000005456 glyceride group Chemical group 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 239000003350 kerosene Substances 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 238000005555 metalworking Methods 0.000 description 2
- 239000002480 mineral oil Substances 0.000 description 2
- 230000000414 obstructive Effects 0.000 description 2
- 235000019645 odor Nutrition 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- JUJWROOIHBZHMG-UHFFFAOYSA-N pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- 238000010079 rubber tapping Methods 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 239000006228 supernatant Substances 0.000 description 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 239000000080 wetting agent Substances 0.000 description 2
- 101710034857 ATIC Proteins 0.000 description 1
- 241001519451 Abramis brama Species 0.000 description 1
- 241000238876 Acari Species 0.000 description 1
- 229920001342 Bakelite® Polymers 0.000 description 1
- 210000000941 Bile Anatomy 0.000 description 1
- 210000000988 Bone and Bones Anatomy 0.000 description 1
- 229910001369 Brass Inorganic materials 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate dianion Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 241000283153 Cetacea Species 0.000 description 1
- 235000008592 Colubrina texensis Nutrition 0.000 description 1
- 206010010071 Coma Diseases 0.000 description 1
- ARUVKPQLZAKDPS-UHFFFAOYSA-L Copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 1
- 206010011224 Cough Diseases 0.000 description 1
- RPNUMPOLZDHAAY-UHFFFAOYSA-N DETA Chemical compound NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 description 1
- LQZZUXJYWNFBMV-UHFFFAOYSA-N Dodecanol Chemical compound CCCCCCCCCCCCO LQZZUXJYWNFBMV-UHFFFAOYSA-N 0.000 description 1
- 235000019749 Dry matter Nutrition 0.000 description 1
- 229920001875 Ebonite Polymers 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 208000010201 Exanthema Diseases 0.000 description 1
- 208000008454 Hyperhidrosis Diseases 0.000 description 1
- 206010022114 Injury Diseases 0.000 description 1
- 241000158728 Meliaceae Species 0.000 description 1
- VOEYXMAFNDNNED-UHFFFAOYSA-N Metolcarb Chemical compound CNC(=O)OC1=CC=CC(C)=C1 VOEYXMAFNDNNED-UHFFFAOYSA-N 0.000 description 1
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
- 206010037844 Rash Diseases 0.000 description 1
- 108060000361 SCNN1A Proteins 0.000 description 1
- 210000003491 Skin Anatomy 0.000 description 1
- 208000006641 Skin Disease Diseases 0.000 description 1
- 241000779819 Syncarpia glomulifera Species 0.000 description 1
- 241000270666 Testudines Species 0.000 description 1
- 241000746181 Therates Species 0.000 description 1
- 229940036248 Turpentine Drugs 0.000 description 1
- 150000001242 acetic acid derivatives Chemical class 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000001476 alcoholic Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- 230000000844 anti-bacterial Effects 0.000 description 1
- 230000000111 anti-oxidant Effects 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 235000006708 antioxidants Nutrition 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 239000003899 bactericide agent Substances 0.000 description 1
- 239000004637 bakelite Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 230000001680 brushing Effects 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 125000004432 carbon atoms Chemical group C* 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000003750 conditioning Effects 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 150000001879 copper Chemical class 0.000 description 1
- QPLDLSVMHZLSFG-UHFFFAOYSA-N copper oxide Chemical class [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 1
- PTVDYARBVCBHSL-UHFFFAOYSA-N copper;hydrate Chemical compound O.[Cu] PTVDYARBVCBHSL-UHFFFAOYSA-N 0.000 description 1
- VUSWCWPCANWBFG-UHFFFAOYSA-N cyclohex-3-ene-1-carboxylic acid Chemical compound OC(=O)C1CCC=CC1 VUSWCWPCANWBFG-UHFFFAOYSA-N 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000005137 deposition process Methods 0.000 description 1
- 230000001627 detrimental Effects 0.000 description 1
- 201000009910 diseases by infectious agent Diseases 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- TWFQJFPTTMIETC-UHFFFAOYSA-N dodecan-1-amine;hydron;chloride Chemical compound [Cl-].CCCCCCCCCCCC[NH3+] TWFQJFPTTMIETC-UHFFFAOYSA-N 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000010685 fatty oil Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 230000002458 infectious Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000003137 locomotive Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 239000006148 magnetic separator Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 150000002830 nitrogen compounds Chemical group 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000010665 pine oil Substances 0.000 description 1
- 239000001739 pinus spp. Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229920000768 polyamine Polymers 0.000 description 1
- 229920001098 polystyrene-block-poly(ethylene/propylene) Polymers 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- OZAIFHULBGXAKX-UHFFFAOYSA-N precursor Substances N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 150000003222 pyridines Chemical class 0.000 description 1
- 239000003247 radioactive fallout Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Inorganic materials [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 1
- 238000001577 simple distillation Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 231100000046 skin rash Toxicity 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 150000003871 sulfonates Chemical class 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 230000035900 sweating Effects 0.000 description 1
- 239000003784 tall oil Substances 0.000 description 1
- 230000002588 toxic Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 238000007514 turning Methods 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 239000008158 vegetable oil Substances 0.000 description 1
- 238000005491 wire drawing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D19/00—Degasification of liquids
- B01D19/02—Foam dispersion or prevention
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/02—Froth-flotation processes
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Lubricants (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE461667A true BE461667A (fi) |
Family
ID=114268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE461667D BE461667A (fi) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE461667A (fi) |
-
0
- BE BE461667D patent/BE461667A/fr unknown
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