Coke Ovhiri Silica Brick

Coke hovhoni silica zvidhinha zvinofanirwa kuve acid acid inodzora zvinhu zvakaumbwa nedombo rechikero, cristobalite uye diki diki rekusara kwequartz negirazi chikamu.

1. Izvo zvinyorwa zvesilicon dioxide zvinopfuura 93%. Iyo chaiyo density iri 2.38g / cm3. Iyo ine kuramba kweacid slag kukukurwa. Yakakwirira yepamusoro tembiricha simba. Yekutanga tembiricha yekutakura mutoro ndeye 1620 – 1670 ℃. Izvo hazvizoremara mushure mekushandisa kwenguva refu pane tembiricha yakakwira. Iko hakuna kazhinji kushanduka kwekristaro pamusoro pe600 ° C. Diki tembiricha yekuwedzera yekuwedzera. Yakakwira yekupisa yekuvhunduka kuramba. Pazasi pe600 ℃, iyo kristaro fomu inochinja zvakanyanya, iro vhoriyamu rinochinja zvakanyanya, uye iko kupisa kwekushisa kunoramba kuchikura. Natural silica inoshandiswa seyakagadzirwa mbichana, uye huwandu hwakafanira hwemamineralizer inowedzerwa kusimudzira kushandurwa kwe quartz mumuviri mutema kuita phosphorite. Zvishoma nezvishoma zvinodzidziswa pa1350 kusvika 1430 ℃ mukuderedza mhepo.

2. Inonyanya kushandiswa yekamuri yekutsiva uye rusvingo rwekupatsanura yemukati yemoto wecoke ovhini, iyo inogadziridza uye slag kamuri yesimbi inogadzira yakavhurika-choto chevira, iyo inowira moto, girazi rinonyungudika bira, iyo yekupisa moto zvishandiso uye maceramics, nezvimwewo nezvimwe zvinotakura zvikamu. Iyo inoshandiswawo kune yakakwira-tembiricha inoremedza-inotakura zvikamu zveanopisa mabota emoto uye acid yakavhurika-mazaya echoto matenga.

3. Izvo zvinhu zve silika zvidhinha ndeye quartzite sechinhu chisina kugadzirwa, ichiwedzera shoma shoma ye mineralizer. Kana ichinge yadzvanywa pakudziya kwakanyanya, ayo mamineral akaumbwa anoumbwa ne tridymite, cristobalite uye girazi rakaumbwa pakakwirira tembiricha. Yayo AiO2 yemukati inopfuura 93%. Pakati pezvakaraswa zvakanaka zvidhinha zvesilica, zvemukati tridymite ndiyo yepamusoro, kuverenga makumi mashanu kubva muzana kusvika makumi masere muzana; cristobalite yechipiri, kuverenga chete 50% kusvika 80%; uye zvirimo zvequartz uye girazi chikamu chinodzikira pakati pe10% ne30%.

4. Izvo zvinhu zve silika zvidhinha zvakagadzirwa ne quartzite, yakawedzerwa neiyo shoma shoma ye mineralizer, uye yakadzvanywa pakupisa kwakanyanya. Kuumbwa kwayo kwemaminerari ndeye tridymite, cristobalite uye girazi rakaumbwa patembiricha yakakwira. Yayo SiO2 yezvinyorwa Pamusoro pe93%.

5. Silica zvidhinha iacidic refractory zvinhu, zvine yakasimba kupokana neacidic slag kukukurwa, asi kana yakanyatso shatiswa nealkaline slag, inokanganisika zviri nyore nemaoididhi senge Al2O3, uye ine yakanakira kuramba maoididhi akadai iCaO, FeO , uye Fe2O3. bonde.

6. Kukosha kukuru kwemutoro kwakadzikama kwekudziya kwakasimba uye kudzikisira kwakadzika, kazhinji pakati pa1690-1730 ℃, iyo inoganhurira mashandiro ayo.

Silica zvidhinha-zvepanyama zvivakwa

1. Acid-base kuramba

Silica zvidhinha zvine acidic zvinokanganisa zvinhu zvine yakasimba kupokana neasidhi slag kukukurwa, asi kana zvanyatsoshatiswa nealkal slag, zvinokuvadzwa zviri nyore nemaoididhi senge AI2O3, uye zvine kumira zvakanaka kune oxides senge CaO, FeO, uye Fe2O3.

2. Kuwanda

Iko kupisa kwekushisa kwesilina zvidhinha kunowedzera pamwe nekuwedzera kwekushanda tembiricha pasina yakasara shrinkage. Munguva yeovheni muitiro, huwandu hwesilina zvidhinha hunowedzera pamwe nekuwedzera kwetembiricha. Mukuita kweovheni, kuwedzera kukuru kwezvidhinha zvesilika kunoitika pakati pezana kusvika mazana matatu ℃, uye kuwedzerwa kusati kwasvika 100 ℃ ingangoita 300% kusvika 300% yekuwedzera kwese. Icho chikonzero ndechekuti SiO70 ine ina kristal fomu shanduko mapoinzi e75 ℃, 2 ℃, 117 ~ 163 ℃ uye 180 ℃ muchoto muitiro. Pakati pavo, kuwedzera kwevhoriyamu kunokonzerwa nekristobalite ndiko kwakakura pakati pe270 ~ 573 ℃.

3. Deformation tembiricha pasi mutoro

Iyo yepamusoro deformation tembiricha pasi pemutoro ndiyo mukana we silica zvidhinha. Iyo iri padhuze nepakagumbuka tridymite uye cristobalite, iri pakati pe1640 na1680 ° C.

4. Kugadzikana kwemafuta

Kukanganisa kukuru kwesilick zvidhinha kwakadzikira kupisa kupisa uye kudzikisira kwakadzika, kazhinji pakati pe1690 na1730 ° C, iyo inogumira yavo yekushandisa renji. Iyo kiyi yekumisikidza kudziya kwekupisa kwesilica zvidhinha ihwohwo hukobvu, chinova chimwe chezvakakosha zviratidzo zvekumisikidza quartz kutendeuka. Iyo yakadzikira kuwanda kwechidhina chesilica, ndiko kuzadza kwakanyanya kushanduka kwesimu, uye zvidiki kuwedzera kwekusara panguva yeovheni.

5. Silica zvidhinha-nyaya dzinoda kutariswa

1. Kana iyo tembiricha iri kushanda yakadzikira pane 600 ~ 700 ℃, huwandu hwesitina yezvidhinha hunoshanduka zvakanyanya, mashandiro ekudzivisa kutonhora nekukurumidza uye kupisa kwakashata, uye kudzikama kwemafuta hakuna kunaka. Kana hovhoni yekokoni ikashanda pane ino tembiricha kwenguva yakareba, iyo masonry inoputswa nyore nyore.

2. Maitiro Ezvinhu zvemuviri wecoke oven silica zvidhinha:

(1) Mutoro unodzikamisa tembiricha wakakwira. Coke hovhoni silica zvidhinha zvinogona kumira zvine simba mutoro wemarasha kurodha mota padenga rechoto pasi pekupisa kwakanyanya, uye inogona kushandiswa kwenguva yakareba isina deformation;

(2) Yakakwira yekushisa conductivity. Coke inogadzirwa nekukochekera marasha mukamuri yekuchekedza nekupisa kwekupisa pamadziro echikamu chemoto, saka zvidhinha zvesilica zvinoshandiswa kuvaka madziro eimba yekutsva inofanirwa kuve neakanyanya kupisa maficha. Mune tembiricha renji yecoke ovhiri yekupisa mukamuri, silica zvidhinha zvine yakanyanya kudziya inoitisa kupfuura ivhu zvidhinha uye yakakwirira alumina zvidhinha. Inofananidzwa neyakajairika coke hovhoni silica zvidhinha, iwo anodziya madhiraivhu edhi coke ovhoni silica zvidhinha inogona kuwedzerwa ne10% kusvika 20%;

(3) Yakanaka yekupisa yekuvhunduka kuramba pakupisa kwakanyanya. Nekuda kwekuchaja nguva nenguva uye kubheka kwehovhoni yekokoreti, tembiricha yesilina zvidhinha pamativi ese eimba yemoto yekamuri inochinja zvakanyanya. Iko tembiricha yekuchinja-chinja kweyakajairika mashandiro haikonzere kwakakomba kutsemuka uye peeling yesilika zvidhinha, nekuti pamusoro pe600 ℃, coke hovhoni silica zvidhinha zvine yakanaka yekupisa yekuvhunduka kuramba;

(4) Yakagadzikana vhoriyamu pakakwirira tembiricha. Mune zvidhinha zvesilicon zvine yakanaka kristaro fomu kutendeuka, iyo yakasara quartz haina kudarika 1%, uye kuwedzerwa panguva yekupisa kunoiswa pamberi pe600C, uyezve iko kuwedzera kunononoka zvakanyanya. Munguva yekujairika kushanda kwehovhoni yecoke, iyo tembiricha haidonhe pasi pe600 ° C, uye masonry haachinje zvakanyanya, uye kudzikama uye kuomarara kwemasoni kunogona kuchengetwa kwenguva yakareba.