Abubuwan buƙatu na gabaɗaya don kayan refractory don murhun baka na lantarki sune:
(1) The refractoriness ya kamata high.The baka zafin jiki ya wuce 4000 ° C, da steelmaking zafin jiki ne 1500 ~ 1750 ° C, wani lokacin har zuwa 2000 ° C, don haka refractory kayan da ake bukata don samun high refractoriness.
(2) Zazzabi mai laushi a ƙarƙashin kaya yakamata ya zama babba.Tanderun lantarki yana aiki a ƙarƙashin yanayin nauyin zafin jiki mai girma, kuma jikin tanderun dole ne ya jure da lalacewa na narkakkar karfe, don haka ana buƙatar kayan da ke jujjuya don samun babban nauyin zafi mai laushi.
(3) Ƙarfin matsawa ya kamata ya zama babba.Rufin tanderun lantarki yana shafar tasirin cajin yayin caji, matsakaicin matsa lamba na narkakkar karfe yayin narkewa, lalatawar karfe yayin bugun, da girgiza injina yayin aiki.Sabili da haka, ana buƙatar kayan haɓaka don samun ƙarfin matsawa.
(4) Thermal watsin ya kamata kananan.Don rage asarar zafi na tanderun lantarki da kuma rage yawan amfani da wutar lantarki, ana buƙatar kayan da za a yi amfani da su don samun rashin daidaituwa na thermal, wato, ma'auni na thermal conductivity ya zama ƙananan.
(5) Zaman lafiyar thermal yakamata yayi kyau.A cikin ƴan mintuna kaɗan daga taɓawa zuwa yin caji a cikin ƙarfe na tanderun lantarki, zafin jiki yana faɗuwa sosai daga kusan 1600 ° C zuwa ƙasa da 900 ° C, don haka ana buƙatar kayan haɓaka don samun kwanciyar hankali mai kyau.
(6) Ƙarfin juriya mai ƙarfi.A lokacin aikin ƙera ƙarfe, slag, gas tanderu da narkakkar karfe duk suna da tasiri mai ƙarfi na yazawar sinadarai akan kayan da ke da ƙarfi, don haka ana buƙatar kayan da za su iya jurewa don samun juriya mai kyau.
Zaɓin kayan haɓaka don bangon gefe
Ana amfani da tubalin MgO-C don gina bangon gefe na tanderun lantarki ba tare da ganuwar sanyaya ruwa ba.Wuraren zafi da layin slag suna da mafi tsananin yanayin sabis.Ba wai kawai narkakkar karfe da slag ne kawai ke lalata su da gurɓata su ba, haka nan kuma suna yin tasiri sosai lokacin da aka ƙara juzu'i, amma kuma suna fuskantar radiation mai zafi daga baka.Saboda haka, waɗannan sassa an gina su tare da tubalin MgO-C tare da kyakkyawan aiki.
Don bangon bangon tanderun lantarki tare da bango mai sanyaya ruwa, saboda amfani da fasahar sanyaya ruwa, nauyin zafi yana ƙaruwa kuma yanayin amfani yana da ƙarfi.Sabili da haka, ya kamata a zaɓi tubalin MgO-C tare da juriya mai kyau, kwanciyar hankali na thermal da haɓakar haɓakar thermal.Abubuwan da ke cikin carbon ɗin su shine 10% ~ 20%.
Kayayyakin da za'a iya jujjuyawa don bangon gefe na murhun wutar lantarki mai ƙarfi
Ganuwar gefen tanderun wutar lantarki mai ƙarfi (tushen UHP) galibi ana gina su tare da tubalin MgO-C, kuma wuraren zafi da wuraren layin slag an gina su tare da tubalin MgO-C tare da kyakkyawan aiki (kamar cikakken matrix carbon MgO-C). tubali).Mahimmanci inganta rayuwar sabis.
Ko da yake an rage nauyin bangon tanderun saboda ingantuwar hanyoyin aiki na tanderun lantarki, har yanzu yana da wahala ga kayan da ba su da ƙarfi don tsawaita rayuwar wuraren zafi yayin aiki a ƙarƙashin yanayin narkewar tanderun UHP.Don haka, an haɓaka fasahar sanyaya ruwa da amfani da ita.Don tanderun lantarki ta amfani da bugun EBT, wurin sanyaya ruwa ya kai kashi 70%, don haka yana rage yawan amfani da kayan da ba a iya jurewa ba.Fasahar sanyaya ruwa na zamani yana buƙatar tubalin MgO-C tare da kyakkyawan yanayin zafi.Ana amfani da kwalta, tubalin magnesia da aka haɗa da resin da tubalin MgO-C (abincin carbon 5% -25%) don gina bangon gefen tanderun lantarki.A ƙarƙashin yanayin iskar oxygen mai tsanani, ana ƙara antioxidants.
Ga wuraren da aka fi samun lalacewa ta hanyar redox redox, tubalin MgO-C tare da manyan maɗaukakin crystalline fused magnesite azaman albarkatun ƙasa, abun cikin carbon sama da 20%, da cikakken matrix carbon don gini ana amfani da su.
Sabon ci gaban tubalin MgO-C na tanderun lantarki na UHP shine a yi amfani da wuta mai zafi sannan kuma a sanya shi tare da kwalta don samar da abin da ake kira tubalin MgO-C da aka yi wa wuta.Kamar yadda ake iya gani daga Table 2, idan aka kwatanta da tubalin da ba a yi ba, ragowar carbon abun ciki na tubalin MgO-C da aka kora bayan kwalta impregnation da recarbonization ya karu da kusan 1%, porosity yana raguwa da 1%, da kuma matsanancin zafin jiki mai ƙarfi da matsa lamba. juriya sune Ƙarfin da aka inganta sosai, don haka yana da ƙarfin gaske.
Magnesium refractory kayan don wutar lantarki gefen bangon
An raba rufin tanderun wutar lantarki zuwa alkaline da acidic.Tsohuwar tana amfani da kayan jujjuyawar alkaline (kamar magnesia da MgO-CaO kayan refractory) azaman rufin tanderu, yayin da na ƙarshen yana amfani da tubalin silica, yashi quartz, farin laka, da sauransu don gina rufin tanderun.
Lura: Don kayan rufin tanderu, tanderun wutar lantarki na alkaline suna amfani da kayan da ke hana alkaline, kuma tanderun wutar lantarki na acidic suna amfani da kayan da ke hana acidic.
Lokacin aikawa: Oktoba-12-2023
