Magnesia Chrome Brick

Magnesia chrome zvidhinha anoshandiswa zvakanyanya muindasitiri uye kuvaka nekuda kwavo emhando yepamusoro zvivakwa senge kupisa kupisa uye kumanikidza kuramba. Kune mamwezve akati wandei akasiyana marudzi e magnesia chrome zvidhinha. Zvinoenderana nezvinodiwa zvezvigadzirwa zvakasiyana, panonyanya kuve nemhando nhatu dzemagnesia chrome zvidhinha. mutsa:

1. Fired magnesia chrome zvidhinha: yakadzinga magnesia chrome zvidhinha zvinogadzirwa nemhando dzakanaka dzemhando yepamusoro-soro yemagnesia uye chrome ore. Zvinyorwa zveCr2O3 zvinogadziriswa zvinoenderana nezvinodiwa zvakasiyana. Iyo chigadzirwa ine yakanaka yakanaka yekupisa uye yepamusoro tembiricha kuita. Inoshandiswa zvakanyanya musimendi kilns uye isiri-ferrous simbi. Vira uye zvichingodaro.

2. Zvakananga zvakabatanidzwa magnesia-chrome zvidhinha: Zvakananga zvakabatanidzwa magnesia-chrome zvidhinha zvinoshandisa yakaderera-isina kuchena chrome ore uye yepamusoro-yakachena-kuchena magnesia sezvinhu zvakagadzirwa, mushure mekumanikidza kwepamusoro, uye kupisa kwepamusoro-tembiricha pane tembiricha iri pamusoro pe1 700 ℃. Hwakanaka hwepamusoro tembiricha kuita, yakasimba kuramba slag kukukurwa kwevhu. Kusagadzikana nesimendi clinker kudengenyeka. Inoshandiswa zvakanyanya mune isina-ferrous metallurgical mavira uye simenti inotenderera kilns.

3. Semi-yakagadziriswa magnesia chrome zvidhinha uye yakagadziridzwa magnesia chrome zvidhinha: semi-yakagadziriswa magnesia chrome zvidhinha uye yakagadziridzwa magnesia chrome zvidhinha, ichishandisa chikamu kana rese rejecha rakasanganiswa (rakagadzirwa jecha rekugadzira) sezvinhu zvakagadzirwa, zvigadzirwa zvakanaka, yakasimba yekumanikidza kuumba, Ultra -high tembiricha kuverenga, yakanaka inoyera kubatana, yakasimba chigadzirwa kugadzikana, yakanaka vhoriyamu kudzikama, inowanzo shandiswa muRH, VOD, AOD uye mamwe ekunze ekuchenesa michina, isiri-ferrous simbi mavira, nezvimwe.

4. Composite spinel inosanganisira MgAl55O80, MgFe8O20, MgCr2O3 uye FeAl2O4 spinel yakasimba mhinduro.

Magnesia chrome zvidhinha zvakagadziriswa nekukurumidza mushure ma1960 nekuda kwekuwedzera kweiyo mbishi kuchena uye kupisa kupisa. Parizvino, magnesia chrome zvidhinha zvinogona kukamurwa kuita zvidhinha zvakajairika, zvidhinha zvakanangana, zvidhinha-zvakaumbwa, zvidhinha zvakagadziridzwa uye Zvidhina zveCast, nezvimwe.

(1) Zvakajairika magnesia chrome zvidhinha: Ichi chigadzirwa chetsika, uchishandisa chrome ore seyakagwamba ma particles uye magnesia sehupfu hwakatsetseka. Kana izvo zviviri zvinhu zvinoumbwa nezvikamu zvakarongedzwa, uye kupisa kwekushisa kunowanzo kuve 1550 ~ 1600 ° C. Iyo microstructure yechidhinha ichi inoratidza kuti pane zvishoma zvakabatana zvakananga pakati pekromite particles uye periclase, kazhinji silicate (CMS) cementation kana fissure kusarudzika; kune mashoma mashoma ekuparadzanisa zvikamu mu periclase, uye pane kuonana kushoma kwakananga mumatrix. Mukubatana, chidhinha ichi chine michina yakasarudzika uye isina hurombo ngura kuramba.

(2) Zvakananga zvakasungwa magnesia-chrome zvidhinha: Zvakananga zvakasungwa magnesia-chrome zvidhinha zvinogadzirwa pahwaro hweyakajairika magnesia-chrome zvidhinha. Pane maviri makuru maitiro ekugadzira. Imwe ndeye kushandiswa kwechena zvigadzirwa, uye imwe yacho kushandiswa kwepamusoro kupfura. tembiricha. Izvo zvinonzi kunongedzwa kwakananga zvinoreva kuti kune kubatana kwakanyanya pakati pechrome ore zvidhinha mune chidhinha uye periclase, nekuti iyo mbishi zvinhu zvine zvishoma SiO2 (inodzorwa pazasi pe1% kusvika 25%), uye huwandu hwesilicate inogadzirwa idiki . Iyo yekupfura nzira inosvina iyo silicate mumakona eakasimba matete. Nekudaro nekuvandudza kubatana kwakananga kwechikamu chakasimba.

Zvakananga zvakasungwa magnesia-chrome zvidhinha zvine hurefu hwakanyanya hwekubatana zvakananga, kuitira kuti zvidhinha zvive neakakwira simba rekupisa, slag kuramba, ngura kuramba, kukosora kusagadzikana, kurwisa ngura, kwakanyanya kupisa kwekutsiga uye kugadzikana kwehoriyamu pa1800 ° C.

(3) Co-sintered magnesia-chrome zvidhinha: Iyo yekugadzira nzira yechigadzirwa ichi inoratidzirwa neepamusoro-tembiricha choto kupisa kweimwe musanganiswa wemagnesia uye chromium ore upfu hwakatsetseka mune imwe chiyero kuti uwane chizvarwa chechipiri spinel uye magnesia-chrome o Solid-phase reaction kuitira chinangwa chekubatanidza zvakananga kugadzirira yakajairwa sintered zvinhu, iyo inoshandiswa kuburitsa dzakapiswa zvigadzirwa kana zvemakemikari akasungwa zvigadzirwa.

Iko kusunganidzwa kwakananga uye microstructure yakafanana yema co-sintered magnesia-chrome zvidhinha zviri nani pane izvo zvezvidhinha zvakanangana. Huwandu hwe periclase desolubilization chikamu uye intergranular sekondari spinel yakawanda. Co-sintered magnesia-chrome zvidhinha zvine akateedzana eakajeka Akasanganiswa nekuita kuri nani kwezvidhinha, inonyanya kuzivikanwa nekuda kwesimba rayo rakanyanya tembiricha, nekukurumidza tembiricha kuramba uye slag kuramba. Zvidhinha zvakajairika zvinogona kukamurwa kuita mhando mbiri, imwe ndiyo yakazara yakajairwa sintered zvidhinha. yechipiri inowanzo kuve yakajairika Kune zvidhinha sintered, pane chikamu chemidziyo, senge yakajairika sintering zvinhu zvezvinhu zvakakora, uye chikamu cheupfu chakatsetseka chinogona kusanganiswa muzvidhinha mune chimwe chikamu chine chrome ore yakanaka uye magnesia bepa upfu , kuitira kuti zvigadzirwa zvakadzingwa uye zvine makemikari zvakasanganiswa zvive microscopic Iyo chimiro chakasiyana.

(4) Kugadziriswa kwemagnesia-chromium zvidhinha: iyo magnesia-chromium yakasanganiswa poda inonyungudika nenzira yemagetsi yekunyungudika, uye iyo melt inosungirirwa kuti igadzire yakaenzana yunifomu microstructure, ine magnesia-chromium spinel uye periclase yakasanganiswa makristasi sechikamu chikuru chikamu Iyo fused magnesia-chromium zvinhu zvinopwanywa kuita chimwe chidimbu saizi, yakavhenganiswa uye kuumbwa, uye ndokuzopiswa kugadzirira zvidhinha zvakagadzirwazve, kana kushandiswa zvakananga semakemikari akaomeswa zvidhinha.

Iyo microstructure yezvidhinha zvakabatanidzwa inoratidzirwa neiyo yakakwira degree rekubatana kwakananga uye huwandu hwakawanda hwepinel desolvent chikamu: kristaro yepasi ine huwandu hwakawanda hweparadhiso chikamu inoshandura chaiko uye kwemakemikari zvimiro zve periclase, sekuderedza kuwedzera kwekushisa. coefficient. , Kuvandudza kupisa kwemagetsi, kugadzirisa kusagadzikana kweasidhi-alkaline slag kukukurwa. Zvidhinha zvakasanganiswa zvine zvivakwa zvakafanana kune zviya zvakadzvanywa-kukandwa zvidhinha, asi zvine zvirinani kurwisa kukurumidza tembiricha shanduko uye yakawanda yunifomu microstructure kupfuura yakasanganiswa-yakakandwa zvidhinha.

Yakasanganiswa nemagnesia chrome chidhinha, ino yakanaka-yakakoshwa matrix ine yunifomu pore kugovera uye ma microcracks, uye kunzwisisika kwayo nekukasira shanduko mukushisa kuri nani pane iko kwekunyungudika nekukanda. Iko-kupisa kwepamusoro kwechigadzirwa chiri pakati peiyo yakasanganiswa-yakakandwa zvidhinha uye yakananga-yakasungwa chidhinha.

(5) Yakakwenenzverwa uye yakakanda magnesia chrome zvidhinha: Isai musanganiswa wemagnesia uye chrome ore muvira remagetsi arc kuti inyungudike zvachose, uye wozodururira iyo yakanyungudika kuita furatifomu yekukanda. Munguva yekusimbisa maitiro, yakagadzika periclase uye spinel kristal mafase anoumbwa, uye yakanaka yekristaro chimiro inoumbwa panguva imwe chete, saka iyo cast magnesia chrome chidhinha ine yakanakisa yakakwira tembiricha simba uye slag ngura kuramba.

Magnesium chrome zvidhinha zvinonyanya kushandiswa mu metallurgia indasitiri, senge kuvakwa kwenzvimbo dzakavhurika dzechoto matoira, magetsi emoto turu, kunze-kwe-choto yekuchenesa mavira uye akasiyana asiri esimbi simbi yekuyera mavira. Iyo yakanyanya-tembiricha chikamu chemadziro eiyo Ultra-yakakwira simba yemagetsi choto inogadzirwa neakasanganiswa-yakakandwa magnesia-chrome zvidhinha, iyo yakakwira-kugumisira nzvimbo yeiyo yekunatsa yevira kunze kwechoto inogadzirwa neyekugadzira zvinhu, uye yakakwira -aerosion nzvimbo yeasina-ferrous simbi inopenya yekutsvaira choto inogadzirwa neakasanganiswa-yakakandwa magnesia-chrome zvidhinha uye zvigadzirwa zvemhando. Yakagadzirwa nemagnesia chrome zvidhinha. Uye zvakare, magnesia-chrome zvidhinha zvinoshandiswa zvakare munzvimbo inotsva yesimende rotary kilns uye inogadzirisazve magirazi kilns.

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Magnesia Chrome Brick

Magnesia chrome zvidhinha anoshandiswa zvakanyanya muindasitiri uye kuvaka nekuda kwavo emhando yepamusoro zvivakwa senge kupisa kupisa uye kumanikidza kuramba. Kune mamwezve akati wandei akasiyana marudzi e magnesia chrome zvidhinha. Zvinoenderana nezvinodiwa zvezvigadzirwa zvakasiyana, panonyanya kuve nemhando nhatu dzemagnesia chrome zvidhinha. mutsa:

1. Fired magnesia chrome zvidhinha: yakadzinga magnesia chrome zvidhinha zvinogadzirwa nemhando dzakanaka dzemhando yepamusoro-soro yemagnesia uye chrome ore. Zvinyorwa zveCr2O3 zvinogadziriswa zvinoenderana nezvinodiwa zvakasiyana. Iyo chigadzirwa ine yakanaka yakanaka yekupisa uye yepamusoro tembiricha kuita. Inoshandiswa zvakanyanya musimendi kilns uye isiri-ferrous simbi. Vira uye zvichingodaro.

2. Zvakananga zvakabatanidzwa magnesia-chrome zvidhinha: Zvakananga zvakabatanidzwa magnesia-chrome zvidhinha zvinoshandisa yakaderera-isina kuchena chrome ore uye yepamusoro-yakachena-kuchena magnesia sezvinhu zvakagadzirwa, mushure mekumanikidza kwepamusoro, uye kupisa kwepamusoro-tembiricha pane tembiricha iri pamusoro pe1 700 ℃. Hwakanaka hwepamusoro tembiricha kuita, yakasimba kuramba slag kukukurwa kwevhu. Kusagadzikana nesimendi clinker kudengenyeka. Inoshandiswa zvakanyanya mune isina-ferrous metallurgical mavira uye simenti inotenderera kilns.

3. Semi-yakagadziriswa magnesia chrome zvidhinha uye yakagadziridzwa magnesia chrome zvidhinha: semi-yakagadziriswa magnesia chrome zvidhinha uye yakagadziridzwa magnesia chrome zvidhinha, ichishandisa chikamu kana rese rejecha rakasanganiswa (rakagadzirwa jecha rekugadzira) sezvinhu zvakagadzirwa, zvigadzirwa zvakanaka, yakasimba yekumanikidza kuumba, Ultra -high tembiricha kuverenga, yakanaka inoyera kubatana, yakasimba chigadzirwa kugadzikana, yakanaka vhoriyamu kudzikama, inowanzo shandiswa muRH, VOD, AOD uye mamwe ekunze ekuchenesa michina, isiri-ferrous simbi mavira, nezvimwe.

4. Composite spinel inosanganisira MgAl55O80, MgFe8O20, MgCr2O3 uye FeAl2O4 spinel yakasimba mhinduro.

Magnesia chrome zvidhinha zvakagadziriswa nekukurumidza mushure ma1960 nekuda kwekuwedzera kweiyo mbishi kuchena uye kupisa kupisa. Parizvino, magnesia chrome zvidhinha zvinogona kukamurwa kuita zvidhinha zvakajairika, zvidhinha zvakanangana, zvidhinha-zvakaumbwa, zvidhinha zvakagadziridzwa uye Zvidhina zveCast, nezvimwe.

(1) Zvakajairika magnesia chrome zvidhinha: Ichi chigadzirwa chetsika, uchishandisa chrome ore seyakagwamba ma particles uye magnesia sehupfu hwakatsetseka. Kana izvo zviviri zvinhu zvinoumbwa nezvikamu zvakarongedzwa, uye kupisa kwekushisa kunowanzo kuve 1550 ~ 1600 ° C. Iyo microstructure yechidhinha ichi inoratidza kuti pane zvishoma zvakabatana zvakananga pakati pekromite particles uye periclase, kazhinji silicate (CMS) cementation kana fissure kusarudzika; kune mashoma mashoma ekuparadzanisa zvikamu mu periclase, uye pane kuonana kushoma kwakananga mumatrix. Mukubatana, chidhinha ichi chine michina yakasarudzika uye isina hurombo ngura kuramba.

(2) Zvakananga zvakasungwa magnesia-chrome zvidhinha: Zvakananga zvakasungwa magnesia-chrome zvidhinha zvinogadzirwa pahwaro hweyakajairika magnesia-chrome zvidhinha. Pane maviri makuru maitiro ekugadzira. Imwe ndeye kushandiswa kwechena zvigadzirwa, uye imwe yacho kushandiswa kwepamusoro kupfura. tembiricha. Izvo zvinonzi kunongedzwa kwakananga zvinoreva kuti kune kubatana kwakanyanya pakati pechrome ore zvidhinha mune chidhinha uye periclase, nekuti iyo mbishi zvinhu zvine zvishoma SiO2 (inodzorwa pazasi pe1% kusvika 25%), uye huwandu hwesilicate inogadzirwa idiki . Iyo yekupfura nzira inosvina iyo silicate mumakona eakasimba matete. Nekudaro nekuvandudza kubatana kwakananga kwechikamu chakasimba.

Zvakananga zvakasungwa magnesia-chrome zvidhinha zvine hurefu hwakanyanya hwekubatana zvakananga, kuitira kuti zvidhinha zvive neakakwira simba rekupisa, slag kuramba, ngura kuramba, kukosora kusagadzikana, kurwisa ngura, kwakanyanya kupisa kwekutsiga uye kugadzikana kwehoriyamu pa1800 ° C.

(3) Co-sintered magnesia-chrome zvidhinha: Iyo yekugadzira nzira yechigadzirwa ichi inoratidzirwa neepamusoro-tembiricha choto kupisa kweimwe musanganiswa wemagnesia uye chromium ore upfu hwakatsetseka mune imwe chiyero kuti uwane chizvarwa chechipiri spinel uye magnesia-chrome o Solid-phase reaction kuitira chinangwa chekubatanidza zvakananga kugadzirira yakajairwa sintered zvinhu, iyo inoshandiswa kuburitsa dzakapiswa zvigadzirwa kana zvemakemikari akasungwa zvigadzirwa.

Iko kusunganidzwa kwakananga uye microstructure yakafanana yema co-sintered magnesia-chrome zvidhinha zviri nani pane izvo zvezvidhinha zvakanangana. Huwandu hwe periclase desolubilization chikamu uye intergranular sekondari spinel yakawanda. Co-sintered magnesia-chrome zvidhinha zvine akateedzana eakajeka Akasanganiswa nekuita kuri nani kwezvidhinha, inonyanya kuzivikanwa nekuda kwesimba rayo rakanyanya tembiricha, nekukurumidza tembiricha kuramba uye slag kuramba. Zvidhinha zvakajairika zvinogona kukamurwa kuita mhando mbiri, imwe ndiyo yakazara yakajairwa sintered zvidhinha. yechipiri inowanzo kuve yakajairika Kune zvidhinha sintered, pane chikamu chemidziyo, senge yakajairika sintering zvinhu zvezvinhu zvakakora, uye chikamu cheupfu chakatsetseka chinogona kusanganiswa muzvidhinha mune chimwe chikamu chine chrome ore yakanaka uye magnesia bepa upfu , kuitira kuti zvigadzirwa zvakadzingwa uye zvine makemikari zvakasanganiswa zvive microscopic Iyo chimiro chakasiyana.

(4) Kugadziriswa kwemagnesia-chromium zvidhinha: iyo magnesia-chromium yakasanganiswa poda inonyungudika nenzira yemagetsi yekunyungudika, uye iyo melt inosungirirwa kuti igadzire yakaenzana yunifomu microstructure, ine magnesia-chromium spinel uye periclase yakasanganiswa makristasi sechikamu chikuru chikamu Iyo fused magnesia-chromium zvinhu zvinopwanywa kuita chimwe chidimbu saizi, yakavhenganiswa uye kuumbwa, uye ndokuzopiswa kugadzirira zvidhinha zvakagadzirwazve, kana kushandiswa zvakananga semakemikari akaomeswa zvidhinha.

Iyo microstructure yezvidhinha zvakabatanidzwa inoratidzirwa neiyo yakakwira degree rekubatana kwakananga uye huwandu hwakawanda hwepinel desolvent chikamu: kristaro yepasi ine huwandu hwakawanda hweparadhiso chikamu inoshandura chaiko uye kwemakemikari zvimiro zve periclase, sekuderedza kuwedzera kwekushisa. coefficient. , Kuvandudza kupisa kwemagetsi, kugadzirisa kusagadzikana kweasidhi-alkaline slag kukukurwa. Zvidhinha zvakasanganiswa zvine zvivakwa zvakafanana kune zviya zvakadzvanywa-kukandwa zvidhinha, asi zvine zvirinani kurwisa kukurumidza tembiricha shanduko uye yakawanda yunifomu microstructure kupfuura yakasanganiswa-yakakandwa zvidhinha.

Yakasanganiswa nemagnesia chrome chidhinha, ino yakanaka-yakakoshwa matrix ine yunifomu pore kugovera uye ma microcracks, uye kunzwisisika kwayo nekukasira shanduko mukushisa kuri nani pane iko kwekunyungudika nekukanda. Iko-kupisa kwepamusoro kwechigadzirwa chiri pakati peiyo yakasanganiswa-yakakandwa zvidhinha uye yakananga-yakasungwa chidhinha.

(5) Yakakwenenzverwa uye yakakanda magnesia chrome zvidhinha: Isai musanganiswa wemagnesia uye chrome ore muvira remagetsi arc kuti inyungudike zvachose, uye wozodururira iyo yakanyungudika kuita furatifomu yekukanda. Munguva yekusimbisa maitiro, yakagadzika periclase uye spinel kristal mafase anoumbwa, uye yakanaka yekristaro chimiro inoumbwa panguva imwe chete, saka iyo cast magnesia chrome chidhinha ine yakanakisa yakakwira tembiricha simba uye slag ngura kuramba.

Magnesium chrome zvidhinha zvinonyanya kushandiswa mu metallurgia indasitiri, senge kuvakwa kwenzvimbo dzakavhurika dzechoto matoira, magetsi emoto turu, kunze-kwe-choto yekuchenesa mavira uye akasiyana asiri esimbi simbi yekuyera mavira. Iyo yakanyanya-tembiricha chikamu chemadziro eiyo Ultra-yakakwira simba yemagetsi choto inogadzirwa neakasanganiswa-yakakandwa magnesia-chrome zvidhinha, iyo yakakwira-kugumisira nzvimbo yeiyo yekunatsa yevira kunze kwechoto inogadzirwa neyekugadzira zvinhu, uye yakakwira -aerosion nzvimbo yeasina-ferrous simbi inopenya yekutsvaira choto inogadzirwa neakasanganiswa-yakakandwa magnesia-chrome zvidhinha uye zvigadzirwa zvemhando. Yakagadzirwa nemagnesia chrome zvidhinha. Uye zvakare, magnesia-chrome zvidhinha zvinoshandiswa zvakare munzvimbo inotsva yesimende rotary kilns uye inogadzirisazve magirazi kilns.

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