Bongata ba lisebelisoa tse tala tsa thepa ea refractory ke tsa lisebelisoa tsa bismuth tseo e seng tsa polasetiki, 'me ho thata ho li etsa lihlahisoa tse felileng ka bobona.Ka hona, hoa hlokahala ho sebelisa setlamo se ka ntle sa tlhaho kapa se tlamellang se tlamang ka tlhaho kapa se kopanyang se kopanyang.Lisebelisoa tse sa tšoaneng tse khethehileng tsa refractory li tlas'a batching e thata le e nepahetseng ho etsa seretse se nang le likaroloana tse lekanang, ho fana ka metsi a tšoanang, polasetiki e itseng le lihlahisoa tse bonolo tsa ho etsa le tse felileng.Hoa hlokahala ho amohela mokhoa oa tlhahiso ka katleho e phahameng, phello e ntle ea ho kopanya le ho kopanya ho loketseng.
(1) Ho bapisa likaroloana
Billet (seretse) e ka etsoa sehlahisoa se nang le bongata bo bongata ka ho fetisisa ka ho khetha motsoako o utloahalang oa likaroloana.Ho ea ka khopolo, ho ile ha lekoa qitikoe e boholo bo le bong ea lisenthimithara tse fapaneng le lisebelisoa tse fapaneng, 'me bongata bo ne bo batla bo tšoana.Leha ho le joalo, porosity e ne e le 38% ± 1%.Ka hona, bakeng sa bolo ea boholo bo le bong, bongata ba eona bo bongata le porosity li ikemela ka boholo ba bolo le thepa ea thepa, 'me li lula li phuthetsoe ka sebopeho sa hexagonal ka nomoro ea khokahano ea 8.
Mokhoa oa theoretical stacking oa karoloana e le 'ngoe ea boholo bo lekanang e na le cube, kholomo e le 'ngoe e oblique, kholomo e kopantsoeng ea oblique, sebopeho sa pyramidal, le tetrahedron.Mekhoa e sa tšoaneng ea stacking ea boholo bo lekanang e bontšoa setšoantšong sa 24. Kamano pakeng tsa mokhoa oa ho beha likaroloana tse le 'ngoe le porosity e bontšoa ho Lethathamo la 2-26.
E le ho eketsa bongata ba lintho tse bonahalang le ho fokotsa porosity, ho sebelisoa sebaka sa boholo bo sa lekanang, ke hore, palo e itseng ea likaroloana tse nyenyane li eketsoa sebakeng se seholo ho eketsa sebopeho sa sphere, le kamano. pakeng tsa molumo o nkiloeng ke sphere le porosity e bontšitsoe tafoleng.2-27.
Ka lisebelisoa tsa clinker, likaroloana tse mahoashe li 4. 5 mm, likaroloana tse bohareng ke 0.7 mm, likaroloana tse ntle ke 0.09 mm, 'me phetoho ea clinker porosity ea clinker e bontšoa ho Setšoantšo sa 2-5.
Ho tloha ho Setšoantšo sa 2-5, likaroloana tse mahoashe ke 55% ~ 65%, likaroloana tse mahareng ke 10% ~ 30%, 'me phofo e ntle ke 15% ~ 30%.Porosity e bonahalang e ka fokotsoa ho 15.5%.Ha e le hantle, metsoako ea thepa e khethehileng ea refractory e ka fetoloa ka mokhoa o nepahetseng ho ea ka thepa ea 'mele le sebōpeho sa likaroloana tsa thepa.
(2) Moemeli oa bonding bakeng sa lihlahisoa tse khethehileng tsa refractory
Ho itšetlehile ka mofuta oa thepa e khethehileng ea refractory le mokhoa oa ho bōpa, li-binders tse ka sebelisoang ke:
(1) Mokhoa oa grouting, gum arabic, polyvinyl butyral, hydrazine methyl cellulose, sodium acrylate, sodium alginate, joalo-joalo.
(2) Mokhoa oa ho peta, ho kenyelletsa le mafura, li-glycols,
Polyvinyl joala, methyl cellulose, starch, dextrin, maltose le glycerin.
(3) Mokhoa oa ente ea boka bo chesang, li-binders ke: boka ba parafine, boka ba linotsi, litlolo: oleic acid, glycerin, stearic acid le tse ling tse joalo.
(4) Mokhoa oa ho lahla, moemeli oa tlamahano: methyl cellulose, ethyl cellulose, cellulose acetate, polyvinyl butyral, joala ea polyvinyl, acrylic;plasticizer: polyethylene glycol, dioctane Phosphoric acid, dibutyl peroxide, joalo-joalo;moemeli ea qhalakanyang: glycerin, oleic acid;solvent: ethanol, acetone, toluene, joalo-joalo.
(5) Mokhoa oa ente, thermoplastic resin polyethylene, polystyrene, polypropylene, acetyl cellulose, propylene resin, joalo-joalo, e ka boela ea futhumatsa resin e thata ea phenolic;lubricant: asiti ea stearic.
(6) Isostatic pressing method, polyvinyl alcohol, methyl cellulose, sebelisa sulfite pulp waste liquid, phosphate le matsoai a mang a inorganic ha ho etsoa pellets.
(7) Mokhoa oa ho hatisa, methyl cellulose, dextrin, joala ba polyvinyl, metsi a litšila a sulfite pulp, sirapo kapa matsoai a sa tšoaneng a sa tloaelehang;sulfite pulp waste liquid, methyl cellulose, gum arabic, dextrin kapa inorganic le inorganic acid matsoai, joalo ka asiti ea phosphoric kapa phosphates.
(3) Li-admixtures bakeng sa lihlahisoa tse khethehileng tsa refractory
E le hore u ntlafatse thepa e itseng ea lihlahisoa tse khethehileng tsa refractory, laola phetoho ea sebopeho sa kristale ea sehlooho, fokotsa mocheso o tukang oa sehlooho, 'me u kenye motsoako o monyenyane oa thepa.Metsoako ena haholo-holo ke metal oxides, non-metal oxides, rare earth metal oxides, fluorides, borides le phosphates.Ka mohlala, ho eketsa 1% ~ 3% boric acid (H2BO3) ho γ-Al2O3 e ka khothalletsa phetoho.Ho eketsoa ha 1% ho 2% TiO2 ho Al2O3 ho ka fokotsa haholo mocheso oa ho thunya (hoo e ka bang 1600 ° C).Ho eketsoa ha TiO2, Al2O3, ZiO2, le V2O5 ho MgO ho khothalletsa ho hōla ha lijo-thollo tsa cristobalite le ho theola mocheso oa ho chesa sehlahisoa.Ho eketsoa ha CaO, MgO, Y2O3 le lisebelisoa tse ling ho ZrO2 lihlahisoa tse tala li ka etsoa ka tharollo e tiileng ea cubic zirconia e tsitsitseng ho tloha mocheso oa kamore ho ea ho 2000 ° C ka mor'a phekolo e phahameng ea mocheso.
(4) Mokhoa le lisebelisoa tsa ho kopanya
Mokhoa oa ho kopanya o omileng
Motsoako o matla o matla oa countercurrent o hlahisoang ke Shandong Konyle o na le boholo ba 0.05 ~ 30m3, o loketseng ho kopanya mefuta e sa tšoaneng ea phofo, granules, flakes le thepa e tlaase ea viscosity, 'me e na le sesebelisoa sa ho eketsa metsi le ho fafatsa.
2. Mokhoa oa ho kopanya metsi
Ka mokhoa o tloaelehileng oa ho kopanya metsi, metsoako ea lihlahisoa tse sa tšoaneng tse tala li kenngoa ka har'a motsoako oa lipolanete o nang le lesela le sireletsang bakeng sa ho sila hantle.Ka mor'a hore slurry e etsoe, polasetiki le metsoako e meng e kenngoa ho lokisa seretse se teteaneng, 'me motsoako o tsoakane ka ho feletseng ka mochine o otlolohileng oa polanete ea seretse, ebe o granulated le ho omisoa ka se omisang granulation spray.
Motsoako oa lipolanete
3. Mokhoa oa ho kopanya polasetiki
E le ho hlahisa mokhoa o rarahaneng oa ho kopanya haholo bakeng sa sehlahisoa se khethehileng sa refractory se se nang letho se loketseng ho etsa polasetiki kapa ho etsa seretse.Ka mokhoa ona, lisebelisoa tse sa tšoaneng tse tala, li-admixtures, li-plasticizers, le litlolo le metsi li tsoakoa ka ho feletseng holim'a motsoako oa lipolanete, ebe li tsoakoa le ho kopanngoa le motsoako o matla o phahameng ho tlosa lipudula ka har'a seretse.E le ho ntlafatsa polasetiki ea seretse, seretse se kopantsoe le lisebelisoa tsa khale, 'me seretse se kenngoa ho motsoako oa bobeli mochine oa letsopa pele o bōptjoa.Koneile e hlahisa li-mixer tse sebetsang hantle le tse matla joalo ka ha ho bonts'itsoe ka tlase:
Motsoako o sebetsang hantle le o matla
Motsoako oa countercurrent
4. Mokhoa oa ho kopanya o omileng
E loketse mekhoa ea ho kopanya le mongobo o tlase.Tšebeliso ea mokhoa oa ho kopanya o omileng o hlokahalang bakeng sa lihlahisoa tse khethehileng tsa refractory tse entsoeng ke mochine ka metsoako ea granular (lisebelisoa tse mahoashe, tse mahareng le tse ntle tsa mekhahlelo e meraro).Lisebelisoa li etsoa ka motsoako oa lehlabathe, leloala le metsi, motsoako oa lipolanete kapa motsoako o qobelloang.
Mokhoa oa ho kopanya ke ho qala ka ho omisa ho kopanya likarolo tse fapaneng tsa granules, ho eketsa tharollo ea metsi e nang le binder (inorganic kapa organic), 'me u kenye phofo e ntle e tsoakiloeng (ho kenyeletsoa lithuso tsa ho tuka, sesebelisoa sa katoloso, le li-additives tse ling).Moemeli) o kopane hantle.Nako ea ho kopanya ka kakaretso ke 20 ~ 30min.Seretse se tsoakiloeng se lokela ho thibela karohano ea boholo ba likaroloana 'me metsi a lokela ho aroloa ka ho lekana.Haeba ho hlokahala, thepa ea seretse e lokela ho ts'oaroa hantle nakong ea ho bōptjoa.
Mongobo oa seretse se entsoeng ka mochine oa khatiso o laoloa ho 2.5% ho ea ho 4%;mongobo oa sehlahisoa se entsoeng ka seretse se laoloa ho 4.5% ho 6.5%;'me mongobo oa sehlahisoa se bōpiloeng se sisinyehang se laoloa ho 6% ho isa ho 8%.
(1) Ts'ebetso ea tekheniki ea letoto la CMP la li-mixer tsa lipolanete tse sebetsang hantle tse hlahisoang ke Kone.
(2) Ts'ebetso ea tekheniki ea motsoako oa lehlabathe le metsi
5. Mokhoa oa ho kopanya seretse
Mokhoa oa ho kopanya seretse ke oa tlhahiso ea lihlahisoa tse khethehileng tsa ceramic tsa refractory, haholo-holo seretse se entsoeng ka seretse bakeng sa ho etsa ente ea gypsum, ho lahla le ho bopa ka ente.Mokhoa oa ts'ebetso ke ho kopanya lisebelisoa tse fapaneng tse tala, li-reinforcing agents, suspending agents, admixtures le 30% ho isa ho 40% ea metsi a hloekileng ka har'a leloala la bolo (leloala le kopanyang) le lesela le sa senyeheng, ebe le kopanya le ho sila kamora nako e itseng. nako., e entsoeng seretse sa seretse bakeng sa ho bopa.Nakong ea ho etsa seretse, hoa hlokahala ho laola boima ba 'mele le pH ea seretse ho ea ka litšobotsi tsa thepa le litlhoko tsa ho ikhalala ha seretse ka boeona.
Motsoako o matla oa countercurrent
Thepa e ka sehloohong e sebelisoang mokhoeng oa ho kopanya seretse ke leloala la bolo, sekontiri sa moea, ho ntša tšepe e metsi, pompo ea seretse, mochini o hloekisang metsi le tse ling tse joalo.
6. Ho futhumatsa mokhoa oa ho kopanya
Parafine le li-binder tse thehiloeng ho resin ke lintho tse tiileng (kapa viscous) mocheso o tloaelehileng, 'me li ke ke tsa tsoakoa mocheso oa kamore,' me li tlameha ho futhumatsoa le ho tsoakoa.
Parafine e sebelisoa e le setlamo ha ho sebelisoa mokhoa oa ho lahlela lefu le chesang.Hobane ntlha e qhibilihang ea boka ba parafine ke 60~80 °C, boka ba parafine bo futhumatsoa ho feta 100 °C ha bo kopanngoa 'me bo na le mokelikeli o motle.Joale phofo e ntle ea lihlahisoa tse tala e kenngoa ho parafine ea metsi, 'me ka mor'a ho kopanya ka ho feletseng le ho kopanya, thepa e lokiselitsoe.Kaka ea boka e entsoe ka ho chesa ho chesa.
Thepa e ka sehloohong ea ho kopanya bakeng sa ho futhumatsa motsoako ke moferefere o futhumetseng.
Nako ea poso: Oct-20-2018