T38 high alumina isitini (ummese uhlobo)

T38, t39 izitini eziphakeme ze-alumina yizona zinto eziyinhloko ze-alumina bauxite ephezulu; amaminerali weqembu le-sillimanite (kufaka phakathi i-kyanite, i-andalusite, i-sillimanite, njll.); izinto zokwenziwa zokusetshenziswa, njenge-alumina yezimboni, i-mullite yokwenziwa, ugesi Fused corundum njalonjalo. I-alumina banadium ephezulu yaseChina icebile ngezinsizakusebenza futhi inhle kakhulu ekuthungeni. Izindawo zokukhiqiza ikakhulukazi zisatshalaliswa eShanxi, eHenan, Hebei, eGuizhou, eShandong nakwezinye izindawo. I-alumina bauxite ephezulu ekhiqizwa ikakhulukazi ingxube ye-bauxite (α-Al2O3 · H2O) ne-kaolinite.

Izitini eziphakeme ze-alumina kuyinto impahla hlangothi refractory nge alumina okuqukethwe hhayi ngaphansi kuka-60%. Kwakhiwa futhi kubalwa nge-bauxite noma ezinye izinto zokusetshenziswa ezinokuqukethwe okuphezulu kwe-alumina. Ifektri yethu ikhiqiza izitini eziphakeme ze-alumina ezinokuqina okuphezulu okushisayo kanye nokuphindisela okungaphezulu kwe-1700 ℃. Ukumelana okuhle kwe-slag ikakhulukazi kusetshenziselwa ulwelwesi lwamahholo wokuqhuma, iziko elishisayo lokushisa, uphahla lwesithando sikagesi, isithando somlilo, iziko lokubuyisa kanye namalilo wokujikeleza. Imikhiqizo eyinhloko yefektri yethu izitini eziphezulu ze-alumina (okusho ukuthi izitini ze-T-head) T-3 T38 T39 T19 T20 T23 T7 T52 T1, izitini eziphakeme ezakhiwe ngokukhethekile, isitini sokuqhumisa isitini izitini ze-arch ekhoneni nezinye izitini eziphikisayo ezisezingeni eliphakeme.

1. Refractoriness: Ukuphindiswa kwe-t38 kanye ne-t39 izitini eziphakeme ze-alumina kuphakeme kunezitini zobumba nezitini ezinesi-silika, kufinyelela ku-1750 ~ 1790 ℃, okungezinto zokwakha ezisezingeni eliphakeme.

2. Layisha ukushisa kokuthambisa: Ngenxa yokuthi imikhiqizo ephezulu ye-aluminium ine-Al2O3 ephezulu, ukungcola okuncane, nengilazi engacoleki kangako, izinga lokushisa elinciphisa umthwalo liphakeme kunezitini zobumba nezitini eziphakeme ze-alumina, kepha ngenxa yokuthi amakristalu e-mullite awenzi isakhiwo senethiwekhi, Izinga lokushisa elinciphisayo ngaphansi komthwalo namanje awuphakeme njengowezitini zesilika.

3. Ukumelana kweSlag: izitini eziphakeme ze-alumina ziqukethe i-Al2O3 eningi, esondelene nezinto zokwakha ezingathathi hlangothi, futhi ingamelana nokuguguleka kwe-slag ene-acid ne-alkaline slag. Njengoba iqukethe i-SiO2, amandla okumelana ne-alkaline slag angcono kunalawo we-acidic slag. Obuthakathaka. Inqubo yokukhiqizwa kwezitini eziphakeme ze-alumina nezitini zobumba ezinama-multi-clinker ziyefana. Umehluko ukuthi inani le-clinker ezithako liphezulu, elingaba phezulu ngama-90-95%. I-clinker idinga ukuhlelwa futhi isuswe ukuze kususwe i-iron ngaphambi kokuchobozwa, futhi izinga lokushisa lokudubula Okuphakeme, njenge-Ⅰ, Ⅱ izitini eziphakeme ze-alumina ngokuvamile ziba yi-1500 ～ 1600 ℃ lapho zidutshulwa kuhhonela lomhubhe. Umkhuba wokukhiqiza eChina ukhombisile ukuthi ngaphambi kokuchobozwa, i-high-alumina clinker ikhethwe ngokuqinile futhi yahlukaniswa, futhi igcinwe kumathrekhi. Ukusetshenziswa kwe-bauxite clinker nendlela yokugaya yobumba ehlanganisiwe kungathuthukisa ikhwalithi yomkhiqizo. Ikakhulu esetshenziselwa ukwakha isithando somlilo, isithando esishisayo, nophahla lwesithando sikagesi. , Isithando somlilo, isithando sokubuyisa, ulwelwesi olujikelezayo, njll.

Isitini esiphakeme se-alumina, okusho ukuthi, into ekhanyisayo ye-aluminium silicate enokuqukethwe kwe-alumina okungaphezulu kwama-48%. Kwakhiwa futhi kubalwa nge-bauxite noma ezinye izinto zokusetshenziswa ezinokuqukethwe okuphezulu kwe-alumina. Ukuqina okuphezulu kokushisa, ukuphindisela okungaphezulu kwe-1770 ℃. Ukumelana kwe-slag kungcono.

Imvamisa ihlukaniswa ngezigaba ezine:

Isigaba I: Al2O3 okuqukethwe ≥75%;

Isigaba Ⅱ: Al2O3 okuqukethwe 60% ~ 75%;

Isigaba Ⅲ: Okuqukethwe kwe-Al2O3 kungama-48% ~ 60%;

Isigaba esikhethekile: okuqukethwe kwe-AL2O3 ≥80%.

Ingabuye ihlukaniswe ngokuya ngokwakhiwa kwayo kwamaminerali, ngokuvamile ihlukaniswe ngezigaba ezinhlanu: i-mullite ephansi (i-sillimanite), i-mullite, i-mullite-corundum, i-corundum-mullite ne-corundum.

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