7 Mhando dzeCorundum Refractory Raw Materials Anowanzo Kushandiswa MuRefractory Castables.

01 Sakadaro Corundum
Sintered corundum, inozivikanwawo sesintered alumina kana semi-yakanyungudutswa alumina, irefractory clinker yakagadzirwa kubva kucalcined alumina kana maindasitiri alumina seyakagadzirwa, yakagadzika kuita mabhora kana miviri yakasvibira, uye yakanyungudutswa pakupisa kwe1750 ~ 1900 ° C.

Sintered alumina ine inopfuura 99% yealuminium oxide inowanzo gadzirwa neyunifomu yakanaka-grained corundum yakabatana zvakananga. Iyo gasi emission rate iri pazasi 3.0%, vhoriyamu density inosvika 3.60%/cubic mita, iyo refractoriness iri padyo nenzvimbo yakanyunguduka yecorundum, ine yakanaka vhoriyamu kugadzikana uye kugadzikana kwemakemikari pakupisa kwakanyanya, uye haina kuparadzwa nekudzikisa mamiriro ekunze, girazi rakaumbwa nesimbi yakanyungudutswa. , simba rakanaka remagetsi uye kupfeka kupikisa pane yakajairika tembiricha uye tembiricha yakakwirira.

02Fused Corundum
Fused corundum is artificial corundum inogadzirwa nekunyungudutsa yakachena alumina poda muvira rinopisa remagetsi. Iyo ine hunhu hwepamusoro kunyungudika, yakakwira mechanical simba, yakanaka yekupisa kuvhunduka kuramba, yakasimba corrosion kuramba uye diki mutsara wekuwedzera coefficient. Fused corundum chinhu chakasvibirira chekugadzira yakakwirira-giredhi yakakosha refractory zvinhu. Kunyanya zvinosanganisira fused white corundum, fused brown corundum, sub-white corundum, nezvimwe.

03Fused White Corundum
Fused white corundum inogadzirwa kubva yakachena alumina poda uye yakanyungudutswa pakupisa kwakanyanya. Ichena muruvara. Iyo yekunyungudutsa yewhite corundum inzira yekunyunguduka uye recrystallization yeindasitiri alumina poda, uye hapana maitiro ekudzikisa. Izvo zvinyorwa zveAl2O3 hazvisi pasi pe9%, uye zvinyorwa zvisingabatsiri zvishoma. Kuomarara kudiki zvishoma pane brown corundum uye kuoma kwacho kwakadzikira zvishoma. Kazhinji anoshandiswa kugadzira abrasive maturusi, yakakosha ceramics uye advanced refractory zvinhu.

04Fused Brown Corundum
Fused brown corundum inogadzirwa kubva kuhigh-alumina bauxite sechinhu chikuru mbishi uye yakasanganiswa necoke (anthracite), uye inonyungudutswa muchoto chemagetsi chepamusoro-soro pane tembiricha inopfuura 2000 ° C. Fused brown corundum ine dense magadzirirwo uye kuomarara kwepamusoro uye inowanzoshandiswa mumakeramiki, chaiyo castings uye advanced refractory zvinhu.

05Sub-white Corundum
Subwhite corundum inogadzirwa ne electromelting yakakosha giredhi kana yekutanga giredhi bauxite pasi pekudzikisa mamiriro uye inodzorwa mamiriro. Paunenge uchinyunguduka, wedzera inodzikisa ajenti (kabhoni), inogadzirisa (iron filings) uye decarburizing agent (iron scale). Nokuti makemikari ayo uye maitiro emuviri ari pedyo nechena corundum, inonzi sub-white corundum. Kuwanda kwayo kwakawanda kuri pamusoro pe3.80g/cm3 uye porosity yayo inooneka iri pasi pe4%. Icho chinhu chakanakira kugadzira epamusoro refractory zvinhu uye kupfeka-resistant zvinhu.

06Chrome corundum
Pahwaro hwewhite corundum, 22% chromium inowedzerwa, uye inogadzirwa nekunyungudika muchoto chemagetsi arc. Ruvara rwepepuru-tsvuku. Kuoma kwacho kwakakwira zvishoma pane brown corundum, yakafanana newhite corundum, uye iyo microhardness inogona kuita 2200-2300Kg/mm2. Kuoma kwacho kwakakwirira kudarika kwewhite corundum uye zvishoma kuderera pane iyo yebrown corundum.

07Zirconium Corundum
Zirconium corundum imhando yeartificial corundum yakagadzirwa nekunyungudutsa alumina uye zirconium oxide pakupisa kwakanyanya muchoto chemagetsi arc, kupenya, kutonhora, kupwanya uye kuongorora. Iyo huru yekristaro chikamu che zirconium corundum ndeye α-Al2O3, yechipiri crystal phase ndeye baddeleyite, uye kune zvakare chikamu chidiki chegirazi chikamu. Iyo crystal morphology uye chimiro che zirconium corundum zvinhu zvakakosha zvinokanganisa kunaka kwayo. Zirconium corundum ine hunhu hwekuomarara kwepamusoro, kusimba kwakanaka, kusimba kwepamusoro, dense magadzirirwo, simba rekukuya rakasimba, yakagadzikana makemikari zvimiro, uye yakanaka yekupisa kuvhunduka kuramba. Inoshandiswa zvakanyanya muabrasives uye refractory zvinhu maindasitiri. Zvinoenderana neiyo zirconium oxide yemukati, inogona kukamurwa kuita maviri echigadzirwa mazinga: ZA25 uye ZA40.