Udindo waukulu wa wobiriwira silicon carbide ufa mu zipangizo refractory
Green silicon carbide powder, dzinalo limamveka lolimba. Kwenikweni ndi mtundu wasilicon carbide (SiC), yomwe imasungunuka pa madigiri oposa 2000 mu ng'anjo yotsutsa ndi zipangizo monga mchenga wa quartz ndi petroleum coke. Zosiyana ndi wambawakuda silicon carbide, ili ndi kuwongolera kolondola kwa ndondomekoyi pamapeto a smelting, ndi zonyansa zochepa kwambiri ndi chiyero chapamwamba cha kristalo, kotero chimapereka mtundu wapadera wobiriwira kapena wobiriwira. "Kuyera" kumeneku kumapangitsa kuti kukhale kolimba kwambiri (kuuma kwa Mohs ndikwambiri mpaka 9.2-9.3, yachiwiri kuchokera ku diamondi ndi boron carbide) komanso kusinthasintha kwabwino kwambiri kwamafuta ndi mphamvu zotentha kwambiri. M'bwalo lazinthu zotsutsa, ndi "fupa lolimba" lomwe lingathe kupirira, kumenyana, kutentha ndi kumanga.
Ndiye, kodi ufa wobiriwirawu ungawonetse bwanji mphamvu zake m'dziko louma la zida zokanira ndikukhala "munthu wofunikira" wofunikira?
Limbikitsani mphamvu ndikuponyera "mafupa achitsulo" otentha kwambiri: Zida zotsutsa zimawopa kwambiri "kulephera kupirira" kutentha kwakukulu, kukhala ofewa ndi kugwa.Green silicon carbide micropowderali ndi kuuma kwambiri komanso mphamvu zabwino kwambiri zotentha kwambiri. Kuziwonjezera pazitsulo zosiyanasiyana zomangira, zida za ramming kapena njerwa zili ngati kuwonjezera chitsulo champhamvu kwambiri ku konkriti. Ikhoza kupanga mafupa olimba ochiritsira mu masanjidwewo, kukana kwambiri mapindikidwe ndi kufewetsa kwa zinthuzo pansi pa katundu wotentha kwambiri. The castables wa kuphulika ng'anjo chitsulo njira ya lalikulu zitsulo chomera ntchito zinthu wamba kale, amene anakokoloka mwamsanga, chitsulo otaya mlingo sakanatha ziwonjezeke, ndi kukonza pafupipafupi anachedwa kupanga. Pambuyo pake, zopambana zaukadaulo zidapangidwa, komanso kuchuluka kwagreen silicon carbide micropowder yawonjezeka kwambiri. "Hei, ndizodabwitsa!" Pambuyo pake wotsogolera msonkhanowo anakumbukira kuti: “Pamene zinthu zatsopanozo zinaikidwamo, chitsulo chosungunulacho chinadutsa, mbali ya tchanelo mwachiwonekere ‘inatafuna’, kuthamanga kwachitsulo kunasanduka mozondoka, ndipo chiŵerengero cha nthaŵi yochikonza chinachepetsedwa ndi kupitirira theka, ndipo zosungazo zinali ndalama zenizeni!” Kulimba kumeneku ndiko maziko a moyo wautali wa zipangizo zotentha kwambiri.
Limbikitsani kuwongolera kutentha ndikuyika "sinki yotenthetsera" pazinthuzo: Kutentha kwambiri kumateteza zinthu zowotcha, ndizabwino! Kwa malo ngati zitseko za uvuni wa coke ndi makoma am'mbali mwa ma aluminium electrolytic cell, zinthuzo zimafunikira kutenthetsa mkati mwachangu kuti kutentha kwaderalo kusakwere kwambiri komanso kuwonongeka. Kutentha kwa matenthedwe a green silicon carbide micropowder ndithudi ndi "wophunzira wabwino kwambiri" pakati pa zinthu zopanda zitsulo (kutentha kwa kutentha kwa chipinda kungafikire kupitirira 125 W/m·K, komwe ndi kambirimbiri kuposa njerwa zadongo wamba). Kuwonjezera pa zinthu zotsutsa mu gawo linalake kuli ngati kuyika "chitoliro cha kutentha" chogwira ntchito bwino muzinthu, zomwe zingathe kupititsa patsogolo kayendedwe kabwino ka kutentha, kuthandizira kutentha mofulumira komanso molingana, ndikupewa kutenthedwa kwapadera ndi kupukuta kapena kuwonongeka chifukwa cha "kutentha pamtima".
Limbikitsani kukana kugwedezeka kwa kutentha ndikukulitsa kuthekera "kokhala bata mukamasintha": Mmodzi mwa "opha" ovuta kwambiri pazida zokanizira ndikuzizira mwachangu komanso kutentha. Ng'anjo imatsegulidwa ndi kuzimitsidwa, ndipo kutentha kumasinthasintha kwambiri, ndipo zipangizo wamba ndizosavuta "kuphulika" ndikuzichotsa.Green silicon carbidemicropowder ili ndi kachulukidwe kakang'ono ka kukulitsa kwamafuta komanso kuthamanga kwamafuta mwachangu, komwe kumatha kulinganiza kupsinjika komwe kumachitika chifukwa cha kusiyana kwa kutentha. Kuziyambitsa mu refractory system kungathe kupititsa patsogolo mphamvu ya zinthuzo kuti zisawonongeke mwadzidzidzi kutentha, ndiko kuti, "thermal shock resistance". Chitsulo chachitsulo cha m'kamwa mwa ng'anjo ya simenti chimatenthedwa ndi kuzizira kwambiri ndi kutentha kwambiri, ndipo moyo wake waufupi unali wovuta kwambiri. Katswiri wina wodziwa ntchito yomanga ng'anjo anandiuza kuti: “Kuyambira pogwiritsira ntchito zida zopangira mphamvu zambiri zokhala ndi green silicon carbide micropowder monga chophatikizira chachikulu ndi ufa, zotsatira zake zakhala zikuchitika nthawi yomweyo. zoyesayesa! ” "Kudekha" kumeneku ndiko kuthana ndi kukwera ndi kutsika kwa kupanga.
Chifukwagreen silicon carbide micropowder imaphatikiza mphamvu zambiri, kukhathamiritsa kwamafuta kwambiri, kukana kugwedezeka kwamphamvu kwamafuta, komanso kukana kukokoloka kwamphamvu, yakhala "soul mate" popanga zida zamakono zokanira kwambiri. Kuyambira ng'anjo kuphulika, converters, ngalande chitsulo, ndi akasinja torpedo mu chitsulo ndi zitsulo zitsulo ku maselo electrolytic mu nonferrous zitsulo; kuchokera ku mbali zazikulu za ng'anjo za simenti ndi magalasi opangira magalasi m'mafakitale omangira kupita ku ng'anjo zowononga kwambiri m'minda yamakampani opanga mankhwala, mphamvu yamagetsi, ndikuwotcha zinyalala, ngakhale kutsanulira makapu ndi njerwa zachitsulo zoponyera ... Zimayikidwa mwakachetechete mu njerwa iliyonse yotsutsa ndi malo aliwonse otayika, kupereka chitetezo cholimba kwa "mtima" wamakampani - kutentha kwapamwamba kwambiri.
Inde, "kulima" kwa green silicon carbide micropowder sikophweka. Kuchokera pakusankhidwa kwa zinthu zopangira, kuwongolera bwino njira yosungunulira ng'anjo (kuonetsetsa chiyero ndi kubiriwira), kuphwanya, kugaya, pickling ndi kuchotsa zonyansa, hydraulic kapena airflow mwatsatanetsatane gulu, mpaka kulongedza kwambiri malinga ndi kugawa kwa tinthu (kuyambira ma microns angapo mpaka mazana a ma microns), sitepe iliyonse ikugwirizana ndi ntchito yokhazikika ya mankhwala. Makamaka, chiyero, tinthu kukula kugawa ndi tinthu mawonekedwe a micropowder mwachindunji bwanji dispersibility ndi zotsatira mu zipangizo refractory. Titha kunena kuti silicon carbide micropowder yapamwamba kwambiri ndiyomwe idapangidwa ndi kuphatikiza kwaukadaulo ndi luso.