Isitini Coke Oven Silica Brick

Izitini ze-coke oven silica kufanele zibe yizinto zokwakha i-asidi ezakhiwe ngamatshe esikalini, i-cristobalite nenani elincane le-quartz esalayo nesigaba sengilazi.

1. Okuqukethwe kwe-silicon dioxide kungaphezu kwama-93%. Ubuningi beqiniso ngu-2.38g / cm3. Inokumelana nokuguguleka kwe-acid slag. Amandla aphezulu okushisa aphezulu. Ukushisa kokuqala kokuthanjiswa komthwalo kungu-1620 – 1670 ℃. Ngeke ikhubazeke ngemuva kokusebenzisa isikhathi eside ekushiseni okuphezulu. Ngokuvamile akukho ukuguqulwa kwekristalu okungaphezu kuka-600 ° C. I-coefficient yokwanda kokushisa okuncane. High ezishisayo ukushaqeka ukumelana. Ngaphansi kuka-600 ℃, ifomu le-crystal lishintsha kakhulu, ivolumu iyashintsha kakhulu, futhi ukumelana nokushaqeka okushisayo kuya kuba kubi kakhulu. I-silica yemvelo isetshenziswa njengempahla eluhlaza, futhi kufakwa inani elifanele le-mineralizer ukukhuthaza ukuguqulwa kwe-quartz emzimbeni oluhlaza kube yi-phosphorite. Kudutshulwe kancane ngo-1350 kuya ku-1430 ℃ ekwehliseni umoya.

2. Isetshenziselwa ikakhulukazi igumbi lokupheka nodonga lokwahlukanisa ikamelo lomlilo lehhavini le-coke, i-regenerator negumbi le-slag lesithando somlilo esivulekileyo sokwenza insimbi, isithando somlilo, isithando somlilo sengilazi, isithando sokudubula se-Refractory izinto zokwakha nobumba, njll. Nezinye izingxenye ezithwala umthwalo. Ibuye isetshenziselwe izingxenye ezinokushisa okuphezulu okushisa umthwalo wezitofu eziqhumayo ezishisayo kanye nophahla lweziko lomlilo ovulekile.

3. Okwenziwe ngezitini ze-silica yi-quartzite njengempahla eluhlaza, engeza inani elincane le-mineralizer. Lapho idutshulwa ngokushisa okuphezulu, ukwakheka kwayo kwamaminerali kuqukethe i-tridymite, i-cristobalite nengilazi eyakhiwe ngokushisa okuphezulu. Okuqukethwe kwayo kwe-AiO2 kungaphezu kwama-93%. Phakathi kwezitini ze-silica ezikhishwe kahle, okuqukethwe kwe-tridymite kuphakeme kakhulu, kubalwa u-50% kuya ku-80%; I-cristobalite ingeyesibili, kubalwa kuphela u-10% kuye ku-30%; futhi okuqukethwe kwesigaba se-quartz nesengilazi kuyashintshashintsha phakathi kuka-5% no-15%.

4. Izinto ezenziwe ngezitini ze-silica zenziwe nge-quartzite, engezwe ngenani elincane le-mineralizer, futhi yadutshulwa ngokushisa okuphezulu. Ukwakhiwa kwayo kwamaminerali yi-tridymite, i-cristobalite ne-glassy eyakhiwe ngokushisa okuphezulu. Okuqukethwe kwayo kwe-SiO2 Ngaphezu kwama-93%.

5. Isitini se-Silica siyinto ekhombayo ene-asidi, enokumelana okuqinile nokuguguleka kwe-slag, kepha uma ikonakaliswe kakhulu yi-alkaline slag, yonakaliswa kalula ngama-oxide anjenge-Al2O3, futhi inokumelana okuhle nama-oxide anjenge-ICaO, FeO , kanye no-Fe2O3. ucansi.

6. Okubi kakhulu ngomthwalo wukuqina okuphansi kokushisa nokushisa okuphansi, imvamisa phakathi kuka-1690-1730 ℃, okubeka umkhawulo kububanzi besicelo sayo.

Izakhiwo zezitini zesilica

1. Ukumelana ne-acid-base

Izitini ze-Silica ziyizinto zokwenziwa ezinokuqina okune-asidi enokumelana okuqinile nokuguguleka kwe-acid slag, kepha uma ikonakaliswe kakhulu yi-alkaline slag, ilimala kalula ngama-oxide anjenge-AI2O3, futhi inokumelana okuhle nama-oxide anjengeCaO, FeO, neFe2O3.

2. Ukunwebeka

Ukuqhutshwa kokushisa kwezitini ze-silica kuyanda ngokwanda kokushisa okusebenzayo ngaphandle kokuncipha okusalile. Ngesikhathi senqubo yehhavini, ivolumu yezitini ze-silica iyanda ngokwanda kwezinga lokushisa. Enqubeni yehhavini, ukunwetshwa okuphezulu kwezitini ze-silica kwenzeka phakathi kuka-100 no-300 ℃, futhi ukunwetshwa ngaphambi kuka-300 about cishe kungama-70% kuye kuma-75% wokunwetshwa okuphelele. Isizathu ukuthi i-SiO2 inezindawo ezine zenguquko ye-crystal form engu-117 ℃, 163 ℃, 180 ~ 270 ℃ no-573 ℃ kunqubo yehhavini. Phakathi kwabo, ukunwetshwa kwevolumu okubangelwa yi-cristobalite kukhulu kakhulu phakathi kuka-180 ~ 270 ℃.

3. Ukushisa kwe-Deformation ngaphansi komthwalo

Ukushisa okuphezulu kwe-deformation ngaphansi komthwalo kuyinzuzo yezitini ze-silica. Kusondele endaweni encibilikayo ye-tridymite ne-cristobalite, ephakathi kuka-1640 no-1680 ° C.

4. Ukuqina kokushisa

Amaphutha amakhulu ezitini ze-silica ukuzinza okuphansi kokushisa nokuqina okuphansi, imvamisa phakathi kuka-1690 no-1730 ° C, okhawula ibanga lesicelo sabo. Ukhiye wokunquma ukuzinza okushisayo kwezitini ze-silica ukuminyana, okungenye yezinkomba ezibalulekile zokunquma ukuguqulwa kwe-quartz. Ukwehla kwesibalo sesitina se-silica, kugcwalisa ngokwedlulele ukuguqulwa kukalamula, futhi kuncane ukwanda kwensalela ngesikhathi senqubo yehhavini.

5.Izindaba zezitini ze-Silica ezidinga ukunakwa

1. Lapho ukushisa okusebenzayo kungaphansi kuka-600 ~ 700 ℃, ivolumu yesitini se-silica ishintsha kakhulu, ukusebenza kokumelana nokubanda nokushisa okusheshayo akukuhle, nokuzinza okushisayo akukuhle. Uma ihhavini le-coke lisebenza kulokhu kushisa isikhathi eside, ukwakhiwa kwamatshe kuyophuka kalula.

2. Ukusebenza Izakhiwo zomzimba zezitini ze-coke oven silica:

(1) Izinga lokushisa elinciphisa umthwalo liphezulu. Izitini ze-coke oven silica zingamelana nomthwalo oshukumisayo wemoto yokulayisha amalahle ophahleni lwesithando ngaphansi kokushisa okuphezulu, futhi ingasetshenziswa isikhathi eside ngaphandle kokukhubazeka;

(2) Ukuqhuba okuphezulu kokushisa. I-coke yenziwa ngokukhipha amalahle egumbini lokupheka ngokushisa okushisayo ezindongeni zekamelo lomlilo, ngakho-ke izitini ze-silica ezisetshenziselwa ukwakha izindonga zekamelo lomlilo kufanele zibe nokushisa okuphezulu okuphezulu. Ebangeni lokushisa kwekamelo lomlilo le-coke oven, izitini ze-silica zinokuqhutshwa okuphezulu kokushisa kunezitini zobumba nezitini eziphakeme ze-alumina. Uma kuqhathaniswa nezitini ezijwayelekile ze-coke oven silica, ukuqhutshwa okushisayo kwezitini eziminyene ze-coke oven silica kungakhuphuka ngo-10% kuye ku-20%;

(3) Good ezishisayo ukushaqeka ukumelana at lokushisa eliphezulu. Ngenxa yokushaja kanye nokupheka ngezikhathi ezithile kuhhavini le-coke, izinga lokushisa kwezitini ze-silica ezinhlangothini zombili zodonga lwegumbi lomlilo lishintsha kakhulu. Ububanzi bokuguquguquka kokushisa kokusebenza okujwayelekile ngeke kubangele imifantu emikhulu nokuxebuka kwezitini ze-silica, ngoba ngaphezulu kuka-600 ℃, izitini ze-coke oven silica zinokumelana okuhle kokushiswa kokushisa;

(4) Ivolumu esitebeleni lokushisa okuphezulu. Ezitini ze-silicon ezinokuguqulwa okuhle kwe-crystal form, i-quartz esele ayidluli ku-1%, futhi ukunwetshwa ngesikhathi sokushisa kugxilwe ngaphambi kuka-600C, bese ukunwetshwa kwehla kancane. Ngesikhathi sokusebenza okujwayelekile kwehhavini le-coke, izinga lokushisa alihli ngaphansi kuka-600 ° C, futhi ukwakhiwa kwamatshe ngeke kuguquke kakhulu, futhi ukuzinza nokuqina kwamatshe kungagcinwa isikhathi eside.