Qaybaha ugu muhiimsan ee alaabta refractory sida lebenkii neefsashada, bulukeeti xannibaya sanka, iyo kabka

Qalabka dib-u-celinta waxaa si ballaaran loogu isticmaalaa birta, tignoolajiyada kiimikada, batroolka iyo kiimikaad batroolka, wax soo saarka mishiinka, farsamaynta tamarta iyo goobaha kale ee warshadaha, kuwaas oo qadarka ugu badan loo isticmaalo warshadaha birta. Saqafka birta ah iyo foornooyinka sifaynta ee warshadaha birta, alaabta refractory sida caadiga ah ay isticmaalaan saarayaasha steelsameeyaha waxaa ka mid ah leben neefta, leben block nozzle, daboolka foornada korontada, castables, ciid dheecaan, magnesia leben kaarboon, iwm. Qalabkan refractory kala duwan yihiin, iyo Qaybaha ugu muhiimsan iyo qaybaha lagu daray ayaa aad u kala duwan. Marka la eego falanqaynta kiimikada, walxaha dib-u-celinta waxay ka kooban yihiin macdanta, sida corundum, mullite, magnesia, iwm.

(Sawirka) Corundum

Marka loo eego qaybta ugu muhiimsan ee walxaha dib-u-soo-celinta, waa qaybta matrixka ee ka kooban hantida dib-u-celinta, waa saldhigga sifooyinka alaabta dib-u-celinta, oo si toos ah u go’aamisa sifooyinka alaabta dib-u-celinta. Tusaale ahaan, leben la neefsan karo waxay u baahan yihiin in laga sameeyo macdan tayo sare leh, ka dibna lagu sameeyo habab adag oo macquul ah, si loo hubiyo in muddada nolosha ee lebenka neefta ee ay isticmaalaan warshadeeyayaasha birta ay buuxin karaan shuruudaha. Qaybaha ugu muhiimsan ee walxaha dib-u-celinta waxay noqon karaan oksaydh (aluminium oxide, magnesium oxide, iwm.), ama walxaha ama xeryahooda aan oksaydhka ahayn (carbon, silicon carbide, iwm.).

Marka loo eego dabeecadda qaybaha ugu muhiimsan, walxaha dib-u-celinta waxaa loo qaybin karaa saddex qaybood: acidic, dhexdhexaad, iyo alkaline. Agabka acidic refractory inta badan waa maaddooyin ka kooban oksaydhooyin acidic ah sida silikoon oxide. Qaybta ugu muhiimsan waa silicic acid ama aluminium silicate, kaas oo dhalin doona cusbo hoos yimaada ficilka heerkulka sare iyo alkali. Qaybaha ugu muhiimsan ee kiimikooyinka refractories alkaline waa magnesium oxide, kalsiyum oxide, iwm. Alaabooyinka refractory ee caadiga ah waxaa ka mid ah ciidda dheecaanka leh iyo muraayadaha ladle. Refractories dhexdhexaad ah ayaa si adag u ah carbonaceous iyo chromium refractories. Intaa waxaa dheer, refractories-aluminium-sare (content alumina ka weyn 45%) waa refractories dhexdhexaad ah oo u janjeera in ay acidic, halka refractories chromium u muuqdaan in ay noqdaan alkaline badan. Agabka dhexdhexaadka ah ee dhexdhexaadka ah, agabka caamada sare ee aluminium-ku-celinta waxaa ka mid ah leben neefta la neefsan karo, lebennada dus-gaaban, iyo daboolka foornada korontada.

(Sawirka) Daboolka foornada

Shirkaddayadu waxay leedahay 18 sano oo cilmi baaris iyo horumarin ah, wax soo saar iyo iibinta alaabada dib-u-celinta sida lebennada neefta lagu neefsado, lebennada xannibaadda, castables, iyo qaacidooyinka la aqoonsan yahay, naqshado gaar ah, iyo hirgelinta adag oo heersare ah ee geeddi-socod kasta, si ay soo-saareyaasha birta u isticmaali karaan. oo niyadda iyo xasilloonida maskaxda ku haysa.