Ib txoj kev npaj rau cordierite lub teeb yuag refractory cib, tus cwj pwm nyob rau hauv hais tias nws siv 40-85 wt% ntxeem tau cordierite ceramic hais, 3-12 wt% magnesite hmoov, 6-24 wt% Al (OH) 3 hmoov, thiab 6-24 wt% raw cov ntaub ntawv silica 10% silica bins. cov ntaub ntawv, nplawm tusyees, thiab mechanically nias rau hauv cov duab; Tom qab ntawd lub cev zoo li lub cev qhuav ntawm 110℃rau 8-36 teev, thiab tom qab ntawd kub-tso ntawm 1300-1410℃rau 2-10 teev kom tau txais cordierite lightweight refractory cib; Txoj kev npaj ntawm porous cordierite ceramic hais yog: sib tov 8-12 wt% coal gangue hmoov, 33-37 wt% Al (OH) 3 hmoov, 8-12 wt% talc hmoov, 13-17 wt% magnesite hmoov, thiab 28-32 wt% silica hmoov, ntxiv rau *** 3-12 dej sib tov saum toj no; Tom qab ntawd lub cev zoo li lub cev qhuav ntawm 110℃rau 8-36 teev, thiab tom qab ntawd kub-tso ntawm 1300-1400℃rau 1-6 teev rau sinter, yog li tau txais cov porous cordierite ceramics; *** tsoo cov ntxeem tau cordierite ceramics rau hauv cov khoom me dua 8 hli kom tau cov ntxeem tau cordierite ceramics.
Kev tsim kho yuav raug piav qhia ntxiv hauv qab no ua ke nrog cov cim tshwj xeeb, yam tsis txwv qhov kev tiv thaiv: Txhawm rau kom tsis txhob rov ua dua, txoj kev npaj ntawm porous cordierite ceramic particles nyob rau hauv qhov tshwj xeeb embodiment yog piav raws li hauv qab no, thiab yuav tsis rov ua dua hauv cov piv txwv: Txoj kev npaj ntawm porous cordierite ceramic particles 8% yog raws li nram no: 33 ~ 37wt% ntawm Al (OH) 3 hmoov, 8 ~ 12wt% ntawm talc hmoov, 13 ~ 17wt% magnesite hmoov, thiab 28 ~ 32wt% silica hmoov, thiab ntxiv 3 ~ 12wt% dej rau qhov sib tov thiab do sib npaug, *** ces zoo li qub; Tom qab ntawd qhuav lub cev zoo li ntawm 110℃rau 8 ~ 36 teev, thiab tom qab ntawd sinter nws ntawm 1300 ~ 1400℃rau 1 ~ 6 teev kom tau porous cordierite ceramics. *** Rhuav cov ntxeem tau cordierite ceramics rau cov khoom me dua 8 hli kom tau cov porous cordierite ceramics.
Piv txwv 1: Ib qho cordierite lightweight refractory cib thiab nws txoj kev npaj. Thaum pib, 50-76 wt% ntxeem tau cordierite ceramic hais, 6-10 wt% magnesite hmoov zoo, 12-20 wt% Al (OH) 3 hmoov zoo, thiab 12-20 wt% silica hmoov zoo yog siv los ua raw khoom, nrog rau ntxiv 3-8 wt% *** pulp khib nyiab ntxiv. Cov sib tov yog nplawm tusyees thiab ces nias rau hauv cov duab nyob rau hauv ib tug siab ntawm 50-100 MPa. Lub cev molded ces qhuav ntawm 110℃rau 8-16 teev, ua raws li los ntawm kev khaws cia kub ntawm 1340-1380℃rau 3-6 teev, kom tau cov cordierite lightweight refractory cib. Hauv qhov piv txwv no: qhov loj me ntawm cov hmoov zoo magnesite yog tsawg dua 50 μm; qhov loj me me ntawm Al (OH) 3 hmoov zoo yog tsawg dua 50 μm; qhov me me ntawm silica hmoov zoo yog tsawg dua 25 μm; pom meej porosity ntawm porous cordierite ceramic hais yog 35-40%, nrog rau qhov nruab nrab pore txoj kab uas hla ntawm 10-20 μm; particle loj faib piv ntawm porous cordierite ceramic hais yog raws li nram no: 8-5 hli nyiaj rau 6-12 wt% ntawm raw khoom; 5-3 hli tso nyiaj rau 18-24 wt% ntawm cov khoom siv raw; 3-1 hli tso nyiaj rau 18-24 wt% ntawm cov khoom siv raw; tsawg dua 1 hli tso nyiaj rau 8-16 wt% ntawm cov khoom siv raw. Lub cordierite lub teeb yuag refractory cib npaj hauv qhov piv txwv no muaj qhov pom meej porosity ntawm 30-38%; qhov nruab nrab pore txoj kab uas hla ntawm 10-20 μm; qhov ceev ntawm 1.56-1.65 g / cm3; thiab compressive zog ntawm chav tsev kub ntawm 60-80 MPa.
Piv txwv 2: Ib qho cordierite lightweight refractory cib thiab nws txoj kev npaj. Thaum pib, 50-76 wt% ntxeem tau cordierite ceramic hais, 6-10 wt% magnesite hmoov zoo, 12-20 wt% Al(OH) 3 hmoov zoo, thiab 12-20 wt% silica hmoov zoo yog siv los ua raw khoom, nrog rau ntxiv 5-10% silica wt ntxiv. Cov sib tov yog stirred tusyees thiab ces nias-tsim nyob rau hauv ib tug siab ntawm 80-120 MPa. Lub cev molded yog ces qhuav ntawm 110℃rau 12-20 teev, thiab tom qab ntawd kub-kho ntawm 1370-1410℃rau 4-8 teev kom tau lub cordierite lightweight refractory cib. Hauv qhov piv txwv no: qhov loj me ntawm magnesite hmoov zoo yog tsawg dua 74 μm; qhov me me ntawm Al (OH) 3 hmoov zoo yog tsawg dua 88 μm; qhov me me ntawm silica hmoov zoo yog tsawg dua 44 μm; silica sol concentration yog 25-30 wt%; pom meej porosity ntawm porous cordierite ceramic hais yog 38-46%, nrog rau qhov nruab nrab pore txoj kab uas hla ntawm 20-30 μm; qhov loj me me ntawm cov porous cordierite ceramic hais yog raws li hauv qab no: 8-5 hli nyiaj rau 6-12 wt% ntawm cov khoom siv raw; 5-3 hli tso nyiaj rau 18-24 wt% ntawm cov khoom siv raw; 3-1 hli tso nyiaj rau 18-24 wt% ntawm cov khoom siv raw; tsawg dua 1 hli tso nyiaj rau 8-16 wt% ntawm cov khoom siv raw. Lub cordierite lub teeb yuag refractory cib npaj hauv qhov piv txwv no muaj qhov pom meej porosity ntawm 38-46%; qhov nruab nrab pore txoj kab uas hla ntawm 20-30 μm; qhov ceev ntawm 1.40-1.56 g / cm3; thiab compressive zog ntawm chav tsev kub ntawm 40-60 MPa.
Piv txwv 3: Ib qho cordierite lightweight refractory cib thiab nws txoj kev npaj. Thaum pib, 40-60 wt% ntxeem tau cordierite ceramic hais, 8-12 wt% magnesite hmoov zoo, 16-24 wt% Al(OH) 3 hmoov zoo, thiab 16-24 wt% silica hmoov zoo yog siv los ua raw cov ntaub ntawv, nrog rau *** 3-5% silica wt thiab cov kua qaub ntxiv rau cov khoom siv raw. Cov sib tov yog stirred tusyees thiab ces nias-tsim nyob rau hauv ib tug siab ntawm 50-80 MPa. Lub cev molded yog ces qhuav ntawm 110℃rau 24-36 teev, thiab tom qab ntawd kub-kho ntawm 1320-1380℃rau 5-10 teev kom tau cov cordierite lightweight refractory cib. Hauv qhov piv txwv no: qhov loj me ntawm magnesite hmoov zoo yog tsawg dua 88 μm; qhov me me ntawm Al (OH) 3 hmoov zoo yog tsawg dua 88 μm; qhov me me ntawm silica hmoov zoo yog tsawg dua 88 μm; qhov concentration ntawm silica sol yog 20-25 wt%; pom meej porosity ntawm porous cordierite ceramic hais yog 45-55%, nrog rau qhov nruab nrab pore txoj kab uas hla ntawm 15-25 μm; particle loj faib piv ntawm ntxeem tau cordierite ceramic hais yog raws li nram no: 5-3 hli nyiaj rau 15-22 wt% ntawm raw khoom; 3-1 hli tso nyiaj rau 15-22 wt% ntawm cov khoom siv raw; tsawg dua 1 hli tso nyiaj rau 10-16 wt% ntawm cov khoom siv raw. Lub cordierite lub teeb yuag refractory cib npaj hauv qhov piv txwv no muaj qhov pom tseeb porosity ntawm 46-54%; qhov nruab nrab pore txoj kab uas hla ntawm 15-25 μm; qhov ceev ntawm 1.29-1.40 g / cm3; thiab compressive zog ntawm chav tsev kub ntawm 25-55 MPa.
Piv txwv 4: Ib qho cordierite lightweight refractory cib thiab nws txoj kev npaj. Thaum pib, 65-85 wt% ntxeem tau cordierite ceramic hais, 3-7 wt% magnesite hmoov zoo, 6-14 wt% Al (OH) 3 hmoov zoo, thiab 6-14 wt% silica hmoov zoo yog siv los ua raw cov ntaub ntawv, nrog rau ntxiv 5-10 wt% *** ntawv pulp pov tseg. Cov sib tov yog nplawm tusyees thiab ces nias rau hauv cov duab nyob rau hauv ib tug siab ntawm 80-120 MPa. Lub cev molded yog ces qhuav ntawm 110℃rau 12-20 teev, thiab tom qab ntawd kub-kho ntawm 1300-1350℃rau 4-8 teev kom tau lub cordierite lightweight refractory cib. Hauv qhov piv txwv no: qhov loj me ntawm cov hmoov zoo magnesite yog tsawg dua 44 μm; qhov loj me me ntawm Al (OH) 3 hmoov zoo yog tsawg dua 74 μm; qhov me me ntawm silica hmoov zoo yog tsawg dua 44 μm; porous cordierite ceramic hais muaj qhov porosity ntawm 35-42% thiab qhov nruab nrab pore txoj kab uas hla ntawm 10-20 μm; qhov loj me me ntawm cov porous cordierite ceramic hais yog raws li nram no: 5-3 hli nyiaj rau 20-30 wt% ntawm raw cov ntaub ntawv; 3-1 hli tso nyiaj rau 25-30 wt% ntawm cov khoom siv raw; tsawg dua 1 hli tso nyiaj rau 20-25 wt% ntawm cov khoom siv raw. Lub cordierite lub teeb yuag refractory cib npaj hauv qhov piv txwv no muaj qhov porosity ntawm 34-44%; qhov nruab nrab pore txoj kab uas hla ntawm 10-20 μm; qhov ceev ntawm 1.40-1.60 g / cm3; thiab compressive zog ntawm chav tsev kub ntawm 50-70 MPa.
Piv txwv 5: Ib qho cordierite lightweight refractory cib thiab nws txoj kev npaj. Thaum pib, 65-85 wt% porous cordierite ceramic hais, 3-7 wt% magnesite hmoov, 6-14 wt% Al (OH) 3 hmoov, thiab 6-14 wt% silica hmoov yog siv los ua raw khoom, nrog rau ntxiv 6-10 wt% silica sol. Cov sib tov yog stirred tusyees thiab ces nias-tsim nyob rau hauv ib tug siab ntawm 50-80 MPa. Lub cev molded yog ces qhuav ntawm 110℃rau 16-24 teev, thiab tom qab ntawd kub-kho ntawm 1300-1350℃rau 2-6 teev kom tau cov cordierite lightweight refractory cib. Hauv qhov piv txwv no: qhov loj me ntawm cov hmoov magnesite tsawg dua 88 μm; qhov me me ntawm Al (OH) 3 hmoov yog tsawg dua 88 μm; qhov me me ntawm silica hmoov yog tsawg dua 74 μm; silica sol concentration yog 30-35 wt%; pom meej porosity ntawm porous cordierite ceramic hais yog 48-55%, nrog rau qhov nruab nrab pore txoj kab uas hla ntawm 20-30 μm; Qhov loj me me ntawm cov porous cordierite ceramic particles yog raws li nram no: 3-1 mm particles account rau 45-60 wt% ntawm raw cov ntaub ntawv, thiab hais me dua 1 mm account rau 20-25 wt% ntawm raw cov ntaub ntawv. Lub cordierite lub teeb yuag refractory cib npaj hauv qhov piv txwv no muaj qhov pom meej porosity ntawm 46-55%; qhov nruab nrab pore txoj kab uas hla ntawm 20-30 μm; qhov ceev ntawm 1.28-1.34 g / cm3; thiab compressive zog ntawm chav tsev kub ntawm 20-40 MPa.
Piv txwv 6: Ib qho cordierite lightweight refractory cib thiab nws txoj kev npaj. Thaum pib, 50-76 wt% porous cordierite ceramic hais, 6-10 wt% magnesite hmoov zoo, 12-20 wt% Al(OH) 3 hmoov zoo, thiab 12-20 wt% silica hmoov zoo yog siv los ua 3 cov ntaub ntawv raw, nrog rau ntxiv silica . Cov sib tov yog stirred tusyees thiab ces nias rau hauv cov duab nyob rau hauv ib tug siab ntawm 100-150 MPa. Lub cev molded yog ces qhuav ntawm 110℃rau 8-16 teev, ua raws li los ntawm tshav kub preservation ntawm 1360-1410℃rau 6-10 teev, kom tau cov cordierite lightweight refractory cib. Hauv qhov piv txwv no: qhov loj me ntawm magnesite hmoov zoo yog tsawg dua 74 μm; qhov me me ntawm Al (OH) 3 hmoov zoo yog tsawg dua 44 μm; qhov me me ntawm silica hmoov zoo yog tsawg dua 60 μm; silica sol concentration yog 35-40 wt%; pom meej porosity ntawm porous cordierite ceramic hais yog 35-40%, nrog rau qhov nruab nrab pore txoj kab uas hla ntawm 10-20 μm; particle loj faib piv ntawm ntxeem tau cordierite ceramic hais yog raws li nram no: 8-5 hli nyiaj rau 6-12 wt% ntawm raw cov ntaub ntawv; 5-3 hli tso nyiaj rau 18-24 wt% ntawm cov khoom siv raw; 3-1 hli tso nyiaj rau 18-24 wt% ntawm cov khoom siv raw; tsawg dua 1 hli tso nyiaj rau 8-16 wt% ntawm cov khoom siv raw. Lub cordierite lub teeb yuag refractory cib npaj hauv qhov piv txwv no muaj qhov pom meej porosity ntawm 30-35%; qhov nruab nrab pore txoj kab uas hla ntawm 10-20 μm; qhov ceev ntawm 1.60-1.65 g / cm3; thiab compressive zog ntawm chav tsev kub ntawm 70-100 MPa. Qhov tshwj xeeb embodiment no siv cov porous cordierite ceramic particles uas tsim los ntawm cov cuab yeej technology ntawm "A porous cordierite ceramic khoom thiab nws txoj kev npaj (CN201110038289.2)" *** thov los ntawm tus neeg thov. Siv cov porous cordierite ceramic particles ua aggregates, thiab magnesite, Al (OH) 3, thiab silica hmoov zoo li matrix, ib tug ntxeem tau qauv yog tsim nyob rau hauv lub matrix los ntawm tus kheej-decomposition ntawm magnesite thiab Al (OH) 3. Lub MgO thiab Al2O3 generated los ntawm decomposition ntawm magnesite thiab Al (OH) 3 tsim high-purity ntxeem tau cordierite nyob rau hauv situ nrog silica, npaj cordierite lub teeb yuag refractory bricks bonded nrog high-purity ntxeem tau cordierite thiab ntxeem tau cordierite ceramic aggregates.
Txoj kev no ua kom ntseeg tau tias cov khoom npaj muaj ob lub zog siab thiab thermal rwb thaiv tsev, nrog rau cov thermal poob siab zoo heev thiab tsis kam mus rau nruab nrab yaig. Lub ntsiab chemical Cheebtsam ntawm cordierite lub teeb yuag refractory cib npaj nyob rau hauv no embodiment yog MgO, Al2O3, thiab SiO2, nrog rau lub ntsiab crystalline theem yog cordierite. Qhov pom tseeb porosity yog 30 ~ 55%, qhov nruab nrab qhov pore loj yog 10 ~ 30μm, qhov ntom ntom yog 1.28 ~ 1.65 g / cm3, thiab lub zog compressive ntawm chav tsev kub yog 20 ~ 100MPa. Yog li ntawd, qhov tshwj xeeb embodiment nta tswj tau pom meej porosity thiab pore loj ntawm cov aggregate thiab matrix, ib puag ncig tus phooj ywg, thiab cov ntim me me hloov tom qab tua. Lub cordierite lub teeb yuag refractory cib nthuav tawm qhov zoo xws li pom tseeb porosity, me me nruab nrab qhov pore loj, siab zog, tsis tshua muaj thermal conductivity, zoo thermal shock resistance, thiab muaj zog tiv taus rau nruab nrab yaig. Qhov no lub teeb yuag refractory cib yog tsim rau siv raws li *** txheej thiab ua hauj lwm txheej ntawm siab - kub kilns los yog ntim nrog kev khiav hauj lwm kub hauv qab no 1380℃.
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