Fasalolin sabon simintin ƙarfe don tanderun narkewar aluminium

(1) Manyan simintin gyare-gyaren fasaha sun haɗa da: ƙananan siminti, ultra-low siminti da simintin da ba na siminti ba, waɗanda ke da kyau (ƙananan porosity), ƙarfin ƙarfi, ƙananan zafin jiki, matsakaicin zafin jiki, da ƙarfin zafin jiki, kuma ƙarfin yana biyo baya. yanayin zafi. Yayin da yake tashi yana karuwa; ƙarar sauran simintin gyaran kafa yana da ƙarfi sosai a yanayin zafi daban-daban.

(2) Bayan daidaitawa da barbashi size, barbashi size rarraba, kololuwa dasa da kuma irin na ultrafine foda shiga a zubawa, Multi-matakin “kusa shiryawa” Hanyar da ake amfani da tare don rage porosity na zubo abu zuwa kasa da 10. %, da kuma rarraba nau’in nau’in nau’i na samfurin da aka yanke shine kawai 0.5PμM, yayin da phosphoric acid na al’ada ko aluminum phosphate a matsayin mai ɗaure, nau’in nau’i na nau’i na kayan haɓaka shine 22μM; Gabaɗaya magana, yana da wahala ga ruwa na aluminum ya shiga ramukan ƙasa da 0.5μM, don haka ƙananan simintin siminti zai maye gurbin phosphates. Na gargajiya refractory kayan na wakili.

(3) A cikin irin wannan low porosity da kananan uniform pore watsawa, da composite additives cewa tsayayya aluminum ruwa shigar azzakari cikin farji ba a kara a cikin low ciminti allura, wanda zai iya ƙara danshi kwana na aluminum ruwa zuwa refractory abu, da kuma inganta aluminum juriya na castable. Ayyukan shayar da ruwa a bayyane yake.

Castable don aluminum narkewar makera

Structure

(1) Ƙara ingots na aluminum ko kayan sharar gida daga ƙofar tanderun zuwa tanderun, wanda ke da sauƙi don buga ƙofar tanderun da saman ƙofar tanderun. Ana ba da shawarar yin amfani da ƙaƙƙarfan ƙaƙƙarfan siminti mai ƙarfi tare da zaruruwan ƙarfe masu jure zafi akan ƙofar tanderun da saman ƙofar tanderun. Yana da wani babban ingancin refractory abu sanye take da bakin karfe resistant zaruruwa dauke da nickel da chromium da sauran alloying abubuwa a kan tushen low siminti castables, da kuma dace fashewa-hujja jamiái da na musamman Additives. An kwatanta shi da babban ƙarfi, juriya mai kyau, juriya mai tasiri, juriya mai zafi, juriya na zubarwa, juriya na lalata, juriya na shiga, da dai sauransu Yana aiki lokacin da aka yi amfani da shi a cikin yanayin da ke ƙasa 1200 ° C. Gwaje-gwaje sun nuna cewa ƙarfinsa a 1000 ° C yana da 30-60 mafi girma fiye da na yau da kullun alumina castables ba tare da fiber karfe ba.

(2) Don saman tanderun, ya kamata a zaɓi simintin simintin gyare-gyare tare da kwanciyar hankali mai kyau da ƙarfin tsarin zafin jiki mai girma. Idan aka yi la’akari da tanadin makamashi da rage yawan amfani da shi, ya kamata mafi girman yawan simintin ɗin ya zama ƙanƙanta gwargwadon yiwuwa.

(3) Yi amfani da simintin gyare-gyare masu nauyi, bulo mai nauyi, turmi mai ɗaukar zafi mai nauyi, samfuran fiber na silicate na aluminum da sauran kayan kariya na zafi mai nauyi don duka kiln don isassun dumama dumbin kiln don rage yawan kuzari da biyan buƙatun.

A halin yanzu, silicon nitride hade da silicon carbide kayan da aka yi amfani da su maye gurbin carbon tubalin a gefen bango kayan aluminum electrolytic Kwayoyin. Ko da yake silicon carbide a cikin silicon nitride hade da silicon carbide abu iya amsa tare da oxygen don samar da silicon dioxide a high yanayin zafi, da karin kafa silicon dioxide fim a waje iya hana ci gaba da iskar shaka na silicon carbide kayan. Haka kuma, hade da silicon nitride da silicon carbide kayan ne resistant zuwa cryolite lalata kuma yana da kyau hadawan abu da iskar shaka juriya, wanda zai iya ƙwarai ƙara rayuwar sabis na aluminum electrolytic cell. Kasan an yi shi da busassun abu mara kyau, bulo mai rufin zafi da allon silicate na calcium.