Chromium Corundum Refractory Zvigadzirwa
rondedzero yechigadzirwa
Iyo mbishi inoshandiswa mu chromium corundum yakatevedzana zvigadzirwa imhinduro yakasimba yakasanganiswa nepamusoro-tembiricha kunyunguduka kwealumina uye chromium oxide mune imwe chikamu.Iyo huru mbishi ndeye yakakwira bauxite (kana maindasitiri alumina) nekuwedzera yakakodzera huwandu hwechromite nekuidzikisa.Iyo mumiririri inonyungudutswa pakupisa kwepamusoro muchoto chemagetsi, uye chromium yakanyungudutswa inodururwa muforoma kuti itonhodze zvishoma nezvishoma, uye yozoitwa mushure mekuvhara..
Chromium corundum refractory products fused cast chrnmecorundum refrac-tory inonziwo fused cast chrnmecorundum refrac-tory.A fused cast refractory chigadzirwa chinoumbwa nemhinduro yakasimba yealumina uye chromium oxide uye shoma shoma ye spinel, ine 60% kusvika 87% yealumina uye 30% yechromium oxide.Iyo yakawanda density ndeye 3.2-3.9g / cm3;, iyo yakakwirira tembiricha simba rakakwirira, zvichienzaniswa nemamwe marudzi e-corundum refractories, kurwisana kwegorosi kwegirazi kunyunguduka ndiko kwakasimba.Inogona kushandiswa sechidzitiro chechoto chakanangana negirazi rakanyungudutswa.
Chromium corundum refractories inoshandiswa zvakanyanya mumucheka wemarasha-mvura slurry pressurized gasifier, ladle yekunatsa choto uye kabhoni dema reactor lining, petrochemical indasitiri slag gasification choto lining uye girazi rinonyungudutsa choto lining, nezvimwewo, uye inogona zvakare kushandiswa kupisa Iyo chrome corundum papuratifomu zvidhinha zvechoto chinhu chakakosha muindasitiri yekupisa tembiricha.
AL203 neCr2O3 ndezvechimiro checorundum, radius yeCr3+ i0.620, uye radius yeAL3+ i0.535.Maererano neempirical formula:
Sezvo musiyano uripo pakati peCr3+ neAL3+ ion radii uri pasi pegumi neshanu muzana, maCr ions anogona kuenderera uye nekusingaperi kutsiva AL mune AL203 lattice, ichigadzira isingaperi inoenderera inotsiva yakasimba mhinduro.
Iyo crystal chimiro cheCr203 uye AL203 zvakafanana, uye ionic radius inosiyana ne13.7%.Naizvozvo, Cr203 uye AL203 inogona kugadzira isingaperi yakasimba mhinduro pakupisa kwakanyanya.Kubva pamaonero eiyo mvura-yakasimba chikamu mutsara, nekuwedzera kweCr203 yemukati, tembiricha panotanga kuoneka chikamu chemvura chinokwirawo.Naizvozvo, kuwedzera huwandu hwakakodzera hweCr203 kune AL203 inogona kuvandudza zvakanyanya michina zvivakwa uye yakakwirira-tembiricha sevhisi kuita kwecorundum refractories.
Cr203 inogona kugadzira yakakwira kunyungudika musanganiswa kana eutectic ine tembiricha yekunyungudika yakakwira ine akawanda akajairika oxides.Semuenzaniso, FeO·Cr203 spinel inogadzirwa neCr203 uye Feo ine nzvimbo yekunyunguduka kusvika ku2100 ℃;Cr203 uye AL203 inogona kuumba inoenderera yakasimba mhinduro.Uye zvakare, Cr203 inogona zvakare kuwedzera zvakanyanya viscosity ye slag uye kuderedza fluidity ye slag, nekudaro ichidzikisa kukora kweiyo slag kune refractory.Naizvozvo, kuwedzera huwandu hwakakodzera hweCr203 kune inodzoreredza zvinhu zvinogona kuderedza zvakanyanya kuparara kwechimiro chechoto chebira zvinhu zvinokonzerwa nekukukurwa kweslag.Iko hakuna kujeka kwakajairwa pakati pekugona kwekuora kwe slag kune chromium corundum refractories uye basicity ye slag.
Iyo chromium corundum zvidhinha yakagadzirwa nechromium corundum refractory material iri muchoto.Kana iyo slag basicity iri 2, iyo chromium corundum zvidhinha ine yakanyanya kupikisa kune iron slag corrosion;apo slag basicity iri 0.2, kudzika kwakadzika kwemhangura slag kune chromium corundum brick Iyo diki;apo iyo slag basicity iri 0.35, kudzika kwakadzika kwetin slag kune chrome corundum zvidhinha ndiyo idiki;apo iyo lead slag basicity iri 0.3, ukobvu hwezvasara hwakakura uye kudzika kweiyo reaction layer, erosion layer uye yekupinda layer ndiyo idiki.Kana iyo slag alkalinity iri 0.37, iyo corrosion resistance yechrome corundum zvidhinha ndiyo yakanyanya kunaka.
