Coke Oven Silica Brick

Izitena ze-coke ze-silica izitena kufuneka zibe zizinto ezinqabileyo ze-asidi ezenziwe ngamatye esikali, i-cristobalite kunye nenani elincinci le-quartz eseleyo kunye nesigaba seglasi.

1. Umxholo we-silicon dioxide ungaphezulu kwama-93%. Ubuninzi benyani yi-2.38g / cm3. Inokuchasana nokhukuliseko lwe-asidi ye-slag. Amandla aphezulu obushushu aphezulu. Amaqondo okuqala okuthamba komthwalo yi-1620 ～ 1670 ℃. Ayizukukhubazeka emva kokusetyenziswa kwexesha elide kubushushu obuphezulu. Ngokuqhelekileyo akukho kuguqulwa kwekristale ngaphezulu kwama-600 ° C. Umlingani omncinci wokwanda kobushushu. Ukumelana ukothuka High thermal. Ngaphantsi kwe-600 ℃, ifom yekristale iyatshintsha ngakumbi, ivolumu iyatshintsha kakhulu, kwaye ukuxhathisa kukothuka okufudumeleyo kuya kusiba kubi. I-silica yendalo isetyenziswa njengempahla eluhlaza, kunye nenani elifanelekileyo le-mineralizer yongezwa ukukhuthaza ukuguqulwa kwe-quartz emzimbeni oluhlaza ibe yi-phosphorite. Icothwe kancinci nge-1350 ukuya kwi-1430 ℃ ekwehliseni umoya.

2. Isetyenziselwa igumbi lokucofa kunye nodonga lwesahlulo segumbi lokutsha le-coke, umvuseleli kunye negumbi le-slag elenza isithando somlilo esivuthayo, iziko lokunyibilikisa iziko, iglasi lokunyibilikisa iziko, izinto kunye neekeramiki, njalo njalo. Isetyenziselwa iindawo ezinobushushu obuphezulu bokuthwala izitovu ezishushu kunye ne-asidi evulekileyo yophahla lomlilo.

3. Izinto zezitena ze-silica yi-quartzite njengezinto ezingavuthiyo, ukongeza inani elincinci le-mineralizer. Xa igxothwa kubushushu obuphezulu, ukwenziwa kwayo kwezimbiwa kwenziwa nge-tridymite, cristobalite kunye neglasi eyenziwe kubushushu obuphezulu. Umxholo wayo we-AiO2 ungaphezulu kwama-93%. Phakathi kwezitena ze-silica ezikhutshwe kakuhle, umxholo we-tridymite ngowona uphezulu, ubala i-50% ukuya kwi-80%; I-cristobalite yesibini, i-10% ukuya kwi-30% kuphela; kwaye umxholo wequartz kunye nesigaba seglasi sitshintsha phakathi kwe-5% kunye ne-15%.

4. Izinto eziphathekayo zezitena ze-silica zenziwe nge-quartzite, yongezwa ngexabiso elincinci le-mineralizer, kwaye lidutshulwa kwiqondo eliphezulu. Ukubumba kwayo izimbiwa yi-tridymite, i-cristobalite kunye neglasi eyenziwe ngobushushu obuphezulu. Umxholo wayo weSiO2 ungaphezulu kwama-93%.

5. Isitena sesilica sisixhobo esine-asidi esichasayo, esikwaziyo ukumelana nokhukuliseko lwe-slag ene-asidi, kodwa xa lonakaliswe ngamandla yi-alkaline slag, lonakaliswa lula zii-oxides ezinje nge-Al2O3, kwaye inokuchasana kakuhle ne-oxides ezinje nge-ICaO, FeO , kunye neFe2O3. ngesondo.

6. Owona mqobo mkhulu kulomthwalo kukuphazamiseka okuzinzileyo kunye nokuphinda ubenakho ukuphinda ubambe, ngokubanzi phakathi kwe-1690-1730 ℃, ethintela umda kuluhlu lwesicelo sayo.

Iipropathi zesitena-zomzimba

1. Ukuchasana kwesiseko se-Acid

Izitena zeSilica zizinto ezinokwakheka ezinamandla ezixhathisa ukhukuliseko lwe-acid slag, kodwa xa zonakaliswe ngamandla yi-alkaline slag, zonakaliswa ngokulula zii-oxides ezinje nge-AI2O3, kwaye zinokuxhathisa kwii-oxides ezinje ngeCaO, FeO, kunye neFe2O3.

2. Ukwandiswa

Ukuqhutywa kobushushu bezitena ze-silica kuyanda ngokwanda kweqondo lokusebenza ngaphandle kokuncipha kwentsalela. Ngexesha lenkqubo ye-oveni, umthamo wezitena zesilica uyanda ngokwanda kwamaqondo obushushu. Kwinkqubo ye-oveni, ukwandiswa okuphezulu kwezitena ze-silica kwenzeka phakathi kwe-100 kunye ne-300 ℃, kwaye ulwandiso ngaphambi kwe-300 ℃ lumalunga ne-70% ukuya kwi-75% yolwandiso lulonke. Isizathu kukuba i-SiO2 ineendawo ezine zenguqu yekristale engu-117 ℃, 163 ℃, 180 ~ 270 ℃ kunye no-573 ℃ kwinkqubo ye-oveni. Phakathi kwabo, ukwandiswa kwevolumu okubangelwa yi-cristobalite yeyona inkulu phakathi kwe-180 ~ 270 ℃.

3. Ubushushu bokutshintsha phantsi komthwalo

Amaqondo aphezulu obushushu deformation phantsi komthwalo luncedo lwezitena zesilica. Isondele kwindawo yokunyibilika ye-tridymite kunye ne-cristobalite, ephakathi kwe-1640 kunye ne-1680 ° C.

4. Ukuzinza kobushushu

Ezona mpazamo zinkulu kwizitena ze-silica kukuphazamiseka okuzinzileyo kwe-thermal kunye ne-refractoriness ephantsi, ngokubanzi phakathi kwe-1690 kunye ne-1730 ° C, ethintela uluhlu lwazo lwesicelo. Isitshixo sokumisela uzinzo olushushu lwezitena ze-silica luxinano, esisinye sezalathi ezibalulekileyo zokumisela ukuguqulwa kwe-quartz. Ubuncinci bezantsi bezitena ze-silica, kokukhona kugqityiwe ukuguqulwa kwekalika, kwaye kuncinci ukwandiswa kwentsalela ngexesha lenkqubo ye-oveni.

5. Imicimbi yezitena yesilica efuna ingqwalaselo

1. Xa ubushushu obusebenzayo bungaphantsi kwe-600 ~ 700 ℃, umthamo wezitena zesilica utshintsha kakhulu, ukusebenza kokumelana nokubanda okukhawulezileyo kunye nobushushu akulunganga, kwaye uzinzo lwe-thermal alulunganga. Ukuba i-oveni ye-coke isebenza kobu bushushu ixesha elide, ulwakhiwo luya kwaphuka ngokulula.

2. Ukusebenza kweempawu zezinto ezenziwe ngezitena zecoke yesilica:

(1) Ubushushu okuthambisa umthwalo liphezulu. Izitena zecoke yesilica izitena zinokumelana nomthwalo onamandla wemoto yokulayisha amalahle eluphahleni lweziko phantsi kobushushu obuphezulu, kwaye inokusetyenziswa ixesha elide ngaphandle kokujika;

(2) Ukuqhuba kobushushu obuphezulu. I-coke yenziwe ngokulahla amalahle kwigumbi lokuhlala ngokufudumeza iindonga zegumbi lokutsha, ke izitena zesilica ezisetyenziselwa ukwakha iindonga zegumbi lokutsha kufuneka zibe nokuqhuba okuphezulu kobushushu. Kuluhlu lwamaqondo obushushu egumbi lokutsha le-coke, izitena zesilica zinokuqhuba okuphezulu kobushushu kunezitena zodongwe kunye nezitena eziphezulu zealumumina. Xa kuthelekiswa nezitena ze-coke ze-silica, isitayile esinyibilikayo se-coke oven isitena singanyuswa nge-10% ukuya kwi-20%;

(3) Good ukumelana kukothuka thermal kwiqondo lobushushu eliphezulu. Ngenxa yokutshaja ngamaxesha athile kunye nokucofa i-coke oveni, iqondo lobushushu lesitena se-silica kumacala omabini eludonga lwegumbi lokutsha litshintsha kakhulu. Uluhlu lwamaqondo obushushu oluguquguqukayo lokusebenza okuqhelekileyo aluyi kubangela ukuqhekeka okunzima kunye nokuxobuka kwezitena ze-silica, kuba ngaphezulu kwe-600 ℃, izitena zecoke yesitena se-silica zinokuxhathisa okuhle;

(4) Umthamo ozinzileyo kubushushu obuphezulu. Kwizitena zesilicon ezinokuguqulwa kwefreyimu efanelekileyo, i-quartz eseleyo ayikho ngaphezulu kwe-1%, kwaye ukwanda ngexesha lokufudumeza kugxilwe phambi kwe-600C, kwaye ke ulwandiso lucotha kakhulu. Ngexesha lokusebenza okuqhelekileyo kwe-oveni ye-coke, iqondo lobushushu alilihli ngaphantsi kwe-600 ° C, kwaye ulwakhiwo aluyi kutshintsha kakhulu, kwaye uzinzo kunye nokuxinana kwamatye kungagcinwa ixesha elide.