Magnesia Chrome Isitena

Izitena zekrismesi iMagnesia zisetyenziswa kakhulu kumzi mveliso nasekwakhiweni ngenxa yeempawu zazo ezikumgangatho ophezulu ezinje ngobushushu kunye noxinzelelo. Kukho iintlobo ezininzi ezahlukeneyo zezitena zemagnesia chrome. Ngokweemfuno zeemveliso ezahlukeneyo, ubukhulu becala kukho iintlobo ezintathu zezitena zemagnesia chrome. uhlobo:

1. Ukudubula kwe-magnesia chrome izitena: izitena ze-magnesia ze-chrome ezenziwe ngomlilo zenziwe ngezithako ezifanelekileyo zemagnesia ezikumgangatho ophezulu kunye ne-chrome ore. Umxholo weCr2O3 uhlengahlengiswa ngokweemfuno ezahlukeneyo. Imveliso inokuzinza okuhle kobushushu kunye nokusebenza kobushushu obuphezulu. Isetyenziswa ngokubanzi kwiikhilnikhi zesamente kunye nokunyibilikisa isinyithi okungenantsimbi. Isithando somlilo njalo njalo.

2. Izitena ezidityaniswe ngokuthe ngqo ze-magnesia-chrome: Izitena ze-magnesia-chrome ezidityaniswe ngokuthe ngqo zisebenzisa ukungcola kwe-chre ore kunye ne-high-quality purity magnesia njengezinto ezingafunekiyo, emva kokubumba koxinzelelo oluphezulu, kunye nokudubula kobushushu obuphezulu kubushushu obungaphezulu kwe-1 700 ℃. Ukusebenza Good lobushushu eliphezulu, ukumelana olomeleleyo slag ukhukuliseko. Ukuxhathisa kukhukuliseko lwe-clinker. Isetyenziswa ngokubanzi kwiifolo zetsimbi ezingezizo ezomeleleyo kunye neecilns rotary kilns.

3. Semi-recombined magnesia chrome bricks and recombined magnesia chrome bricks: semi-recombined magnesia chrome bricks and recombined magnesia chrome bricks, using part or all of fused sand (fused synthetic synthetic) njengezinto ezisetyenziswayo, izinto ezifanelekileyo, ukubumba koxinzelelo oluphezulu, i-Ultra -Ukuba kubalwa ubushushu obuphezulu, ulungelelwaniso lwamasuntswana elungileyo, amandla emveliso aphezulu, uzinzo lwevolumu elungileyo, esetyenziswa ngokubanzi kwiRH, VOD, AOD kunye nezinye izixhobo zokucoca zangaphandle, iifanitshala zentsimbi ezingezizo,

4. Izitena zekrismesi iMagnesia ziimveliso ezinamachiza alkaline ane-55% ukuya kwi-80% ye-MgO kunye ne-8% ukuya kwi-20% yeCr2O3, eyenziwe nge-periclase, i-spinel edityanisiweyo kunye nenani elincinci lesigaba sesilicate. I-spinel edibeneyo iquka i-MgAl2O4, i-MgFe2O4, i-MgCr2O4 kunye ne-FeAl2O4 isisombululo esomeleleyo.

Izitena zekrismesi iMagnesia ziye zakhula ngokukhawuleza emva kweminyaka yoo-1960 ngenxa yokwanda kokucoceka kwempahla eluhlaza kunye neqondo lokudubula. Okwangoku, i-magnesia chrome izitena zingahlulwa zibe zizitena eziqhelekileyo, izitena ezibotshiweyo ngokuthe ngqo, izitena ezidityanisiweyo, izitena ezenziwe ngokutsha kunye nezitena zeCast, njl.

(1) Isiqhelo isitena se-magnesia chrome: Le yimveliso yesiko, kusetyenziswa isinyithi se-chrome njengamaqhekeza arhabaxa kunye nemagnesia njengomgubo ocolekileyo. Okanye ezi zixhobo zimbini zenziwe ngamasuntswana ahleliweyo, kwaye iqondo lokudubula ngokubanzi li-1550 ~ 1600 ° C. Ubume obuncinci bezitena bubonisa ukuba kuncinci ukubopha ngokuthe ngqo phakathi kwamasuntswana e-chromite kunye ne-periclase, ubukhulu becala isamente (CMS) yesamente okanye ukubekwa bucala kwe-fissure; zimbalwa izigaba zokuchithwa kwi-periclase, kwaye akukho kunxibelelana ngokuthe ngqo kwi-matrix. Ngokudibeneyo, esi sitena sinempahla engalunganga yomatshini kunye nokumelana ne-slag.

(2) Izitena eziboshwe ngokuthe ngqo ze-magnesia-chrome: Izitena ezibotshiweyo ze-magnesia-chrome ziphuhliswa ngokwesiseko sezitena zemagnesia-chrome. Zimbini izinto eziphambili kwimveliso. Enye kukusetyenziswa kwezinto ezicocekileyo, kwaye enye kukusetyenziswa kokudubula okuphezulu. ubushushu. Oko kubizwa ngokuba kukudibanisa ngokuthe ngqo kuthetha ukuba kukho unxibelelwano oluthe ngqo ngakumbi phakathi kwamasuntswana e-chrome ore kwisitena kunye ne-periclase, kuba izinto zokwenza izinto eluhlaza ziqukethe i-SiO2 encinci (elawulwa ngaphantsi kwe-1% ukuya kwi-25%), kwaye isixa sesilicic esivelisiweyo sincinci . Indlela yokudubula ifaka i-silicate kwiimbombo zeengqungquthela eziqinileyo. Ngokwenjenje ukuphucula ukubopha ngokuthe ngqo kwesigaba esiqinileyo.

Izitena ze-magnesia-chrome eziqhotyoshelwe ngokuthe ngqo zinomgangatho ophakamileyo wokubopha ngokuthe ngqo, ukuze izitena zibenamandla aphezulu obushushu, ukuxhathisa i-slag, ukumelana nokubola, ukumelana nokhula, ukumelana nokubola, uzinzo olomeleleyo lokuqina komothuko kunye nozinzo lwevolumu ngo-1800 ° C.

(3) Isitena esenziwe ngokudibeneyo se-magnesia-chrome: Inkqubo yokuvelisa le mveliso ibonakaliswa ngumlilo weqondo lobushushu eliphezulu lokudubula komxube we-magnesia kunye ne-chromium ore umgubo ocolekileyo kumlinganiselo othile wokuphumeza ukuveliswa kwespinel sesibini kunye nemagnesia-chrome intsimbi Isigaba esimbaxa sokusombulula ngenjongo yokubopha ngokuthe ngqo ukulungiselela izinto eziqhelekileyo ezisetyenzisiweyo, ezisetyenziselwa ukuvelisa iimveliso ezitshisiweyo okanye iimveliso ezinamachiza.

Ukudibanisa ngokuthe ngqo kunye nokufana kwe-microstructure ye-co-sintered magnesia-chrome izitena zingcono kunezitena eziboshwe ngokuthe ngqo. Inani lepariclase desolubilization phase kunye ne-spelanular secondary spinel lingaphezulu. I-co-sintered magnesia-chrome izitena inothotho oluthe ngqo oludityaniswe nokusebenza okungcono kwezitena, idume ngokukhethekileyo ngamandla alo aphezulu obushushu, ukumelana nokukhawuleza kobushushu kunye nokumelana ne-slag. Izitena eziqhelekileyo ezenziwe ngamatye ahlukeneyo zinokwahlulwa zibe ziindidi ezimbini, enye isitena esiqhelekileyo esenziwe ngesitena, lonke uthotho lwezinto eziqhelekileyo ezenziwe ngamasuntswana kunye nomgubo ocolekileyo, nokuba uyadutyulwa okanye udityanisiwe ngokwemichiza, ulwakhiwo lwayo luyafana; okwesibini kuyinto eqhelekileyo Kwizitena ezenziwe ngesintyintyintywayo, kukho inxenye yezithako, ezinje ngezinto zokuhombisa ezixhaphakileyo zamasuntswana arhabaxa, kwaye nenxalenye yomgubo ocolekileyo ingaxutywa kwisitena kwinxalenye ethile yentsimbi ye-chore ococekileyo kunye nephepha le-magnesia , ukuze imveliso edutyuliweyo kunye neekhemikhali zidityaniswe ngemicroscopic Isakhiwo sahlukile.

(4) Ukugqitywa kwakhona kwezitena ze-magnesia-chromium: i-magnesia-chromium umgubo oxutywe inyibilikiswa yindlela yokunyibilika kombane, kwaye unyibilikiso ludityaniswa lwenze ulungelelwaniso olufanayo, kunye ne-magnesia-chromium spinel kunye ne-periclase iikristali ezixubileyo njengowona mgangatho uphambili Isixhobo se-magnesia-chromium esidityanisiweyo siyacolwa silingane nesuntswana elithile, sixutywe kwaye sibunjwe, emva koko sidutyulwe ukulungiselela izitena ezenziwe ngokutsha, okanye zisetyenziswe ngokuthe ngqo njengezitena zesamente ezenziweyo.

Ubuncinci bezitena ezidityanisiweyo zibonakaliswa kwinqanaba eliphezulu lokudibanisa ngokuthe ngqo kunye nenqanaba elikhulu lesigaba sokujikeleza kwesipelingi: isiseko sekristale esinexabiso elikhulu lesigaba sokutshabalalisa ngokusisiseko sitshintsha iipropathi zomzimba kunye neekhemikhali zepheriklase, njengokunciphisa ukwandiswa kobushushu ulungelelwaniso. , Ukuphucula ukuxhathisa kukothuka, ukuphucula ukuxhathisa kukhukuliseko lwe-acid-alkaline. Izitena ezidityanisiweyo zineempawu ezifanayo nakwizitena ezifakiweyo, kodwa zinokumelana ngcono notshintsho lobushushu olukhawulezileyo kunye nesakhiwo esincinci ngakumbi kunezitena ezifakiweyo.

Idityaniswe nesitena se-magnesia chrome, sisicazululo esenziwe kakuhle esasazwa ngokufanayo kwepore kunye nee-microcracks, kwaye uvakalelo lwayo kutshintsho ngequbuliso kubushushu lungcono kunokunyibilika nokuphoswa. Ukusebenza kobushushu obuphezulu bemveliso kuphakathi kwezitena ezifakiweyo kunye nezitena eziboshwe ngokuthe ngqo.

(5) Ifakwe yaza yaphosa i-magnesia chrome izitena: Beka umxube we-magnesia kunye ne-chrome ore kwiziko lombane le-arc ukuze unyibilike ngokupheleleyo, emva koko ugalele ukunyibilika kwisikhunta sokuphosa. Ngexesha lenkqubo yokuqinisa, iziseko ze-periclase kunye ne-spinel crystal zenziwa, kwaye kwakhiwa isakhiwo esihle sekristal ngaxeshanye, ke isitena se-magnesia chrome sinezitena ezinobushushu obuphezulu kunye nokumelana ne-slag corrosion.

Izitena zeMagnesium chrome zisetyenziswa ikakhulu kwishishini lokunyibilikisa isinyithi. Icandelo lobushushu obuphezulu eludongeni lweziko lombane lombane elenziwe ngombane lwenziwe ngezitena ezihlanganisiweyo ze-magnesia-chrome, indawo e-errosion ephezulu yesithando somlilo esingaphandle kwesithando senziwe ngezinto zokwenziwa, kwaye phezulu Indawo enesinyithi esinyibilikisayo esenziwe ngesinyithi senziwe ngezitena ze-magnesia-chrome kunye nezinto zokwenziwa. Yenziwe ngemagnesia chrome izitena. Ukongeza, i-magnesia-chrome izitena zikwasetyenziswa kwindawo evuthayo yesamente iilensi ezijikelezayo kunye nokuzihlaziya ngokutsha kwee-kilns zeglasi.

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Magnesia Chrome Isitena

Izitena zekrismesi iMagnesia zisetyenziswa kakhulu kumzi mveliso nasekwakhiweni ngenxa yeempawu zazo ezikumgangatho ophezulu ezinje ngobushushu kunye noxinzelelo. Kukho iintlobo ezininzi ezahlukeneyo zezitena zemagnesia chrome. Ngokweemfuno zeemveliso ezahlukeneyo, ubukhulu becala kukho iintlobo ezintathu zezitena zemagnesia chrome. uhlobo:

1. Ukudubula kwe-magnesia chrome izitena: izitena ze-magnesia ze-chrome ezenziwe ngomlilo zenziwe ngezithako ezifanelekileyo zemagnesia ezikumgangatho ophezulu kunye ne-chrome ore. Umxholo weCr2O3 uhlengahlengiswa ngokweemfuno ezahlukeneyo. Imveliso inokuzinza okuhle kobushushu kunye nokusebenza kobushushu obuphezulu. Isetyenziswa ngokubanzi kwiikhilnikhi zesamente kunye nokunyibilikisa isinyithi okungenantsimbi. Isithando somlilo njalo njalo.

2. Izitena ezidityaniswe ngokuthe ngqo ze-magnesia-chrome: Izitena ze-magnesia-chrome ezidityaniswe ngokuthe ngqo zisebenzisa ukungcola kwe-chre ore kunye ne-high-quality purity magnesia njengezinto ezingafunekiyo, emva kokubumba koxinzelelo oluphezulu, kunye nokudubula kobushushu obuphezulu kubushushu obungaphezulu kwe-1 700 ℃. Ukusebenza Good lobushushu eliphezulu, ukumelana olomeleleyo slag ukhukuliseko. Ukuxhathisa kukhukuliseko lwe-clinker. Isetyenziswa ngokubanzi kwiifolo zetsimbi ezingezizo ezomeleleyo kunye neecilns rotary kilns.

3. Semi-recombined magnesia chrome bricks and recombined magnesia chrome bricks: semi-recombined magnesia chrome bricks and recombined magnesia chrome bricks, using part or all of fused sand (fused synthetic synthetic) njengezinto ezisetyenziswayo, izinto ezifanelekileyo, ukubumba koxinzelelo oluphezulu, i-Ultra -Ukuba kubalwa ubushushu obuphezulu, ulungelelwaniso lwamasuntswana elungileyo, amandla emveliso aphezulu, uzinzo lwevolumu elungileyo, esetyenziswa ngokubanzi kwiRH, VOD, AOD kunye nezinye izixhobo zokucoca zangaphandle, iifanitshala zentsimbi ezingezizo,

4. Izitena zekrismesi iMagnesia ziimveliso ezinamachiza alkaline ane-55% ukuya kwi-80% ye-MgO kunye ne-8% ukuya kwi-20% yeCr2O3, eyenziwe nge-periclase, i-spinel edityanisiweyo kunye nenani elincinci lesigaba sesilicate. I-spinel edibeneyo iquka i-MgAl2O4, i-MgFe2O4, i-MgCr2O4 kunye ne-FeAl2O4 isisombululo esomeleleyo.

Izitena zekrismesi iMagnesia ziye zakhula ngokukhawuleza emva kweminyaka yoo-1960 ngenxa yokwanda kokucoceka kwempahla eluhlaza kunye neqondo lokudubula. Okwangoku, i-magnesia chrome izitena zingahlulwa zibe zizitena eziqhelekileyo, izitena ezibotshiweyo ngokuthe ngqo, izitena ezidityanisiweyo, izitena ezenziwe ngokutsha kunye nezitena zeCast, njl.

(1) Isiqhelo isitena se-magnesia chrome: Le yimveliso yesiko, kusetyenziswa isinyithi se-chrome njengamaqhekeza arhabaxa kunye nemagnesia njengomgubo ocolekileyo. Okanye ezi zixhobo zimbini zenziwe ngamasuntswana ahleliweyo, kwaye iqondo lokudubula ngokubanzi li-1550 ~ 1600 ° C. Ubume obuncinci bezitena bubonisa ukuba kuncinci ukubopha ngokuthe ngqo phakathi kwamasuntswana e-chromite kunye ne-periclase, ubukhulu becala isamente (CMS) yesamente okanye ukubekwa bucala kwe-fissure; zimbalwa izigaba zokuchithwa kwi-periclase, kwaye akukho kunxibelelana ngokuthe ngqo kwi-matrix. Ngokudibeneyo, esi sitena sinempahla engalunganga yomatshini kunye nokumelana ne-slag.

(2) Izitena eziboshwe ngokuthe ngqo ze-magnesia-chrome: Izitena ezibotshiweyo ze-magnesia-chrome ziphuhliswa ngokwesiseko sezitena zemagnesia-chrome. Zimbini izinto eziphambili kwimveliso. Enye kukusetyenziswa kwezinto ezicocekileyo, kwaye enye kukusetyenziswa kokudubula okuphezulu. ubushushu. Oko kubizwa ngokuba kukudibanisa ngokuthe ngqo kuthetha ukuba kukho unxibelelwano oluthe ngqo ngakumbi phakathi kwamasuntswana e-chrome ore kwisitena kunye ne-periclase, kuba izinto zokwenza izinto eluhlaza ziqukethe i-SiO2 encinci (elawulwa ngaphantsi kwe-1% ukuya kwi-25%), kwaye isixa sesilicic esivelisiweyo sincinci . Indlela yokudubula ifaka i-silicate kwiimbombo zeengqungquthela eziqinileyo. Ngokwenjenje ukuphucula ukubopha ngokuthe ngqo kwesigaba esiqinileyo.

Izitena ze-magnesia-chrome eziqhotyoshelwe ngokuthe ngqo zinomgangatho ophakamileyo wokubopha ngokuthe ngqo, ukuze izitena zibenamandla aphezulu obushushu, ukuxhathisa i-slag, ukumelana nokubola, ukumelana nokhula, ukumelana nokubola, uzinzo olomeleleyo lokuqina komothuko kunye nozinzo lwevolumu ngo-1800 ° C.

(3) Isitena esenziwe ngokudibeneyo se-magnesia-chrome: Inkqubo yokuvelisa le mveliso ibonakaliswa ngumlilo weqondo lobushushu eliphezulu lokudubula komxube we-magnesia kunye ne-chromium ore umgubo ocolekileyo kumlinganiselo othile wokuphumeza ukuveliswa kwespinel sesibini kunye nemagnesia-chrome intsimbi Isigaba esimbaxa sokusombulula ngenjongo yokubopha ngokuthe ngqo ukulungiselela izinto eziqhelekileyo ezisetyenzisiweyo, ezisetyenziselwa ukuvelisa iimveliso ezitshisiweyo okanye iimveliso ezinamachiza.

Ukudibanisa ngokuthe ngqo kunye nokufana kwe-microstructure ye-co-sintered magnesia-chrome izitena zingcono kunezitena eziboshwe ngokuthe ngqo. Inani lepariclase desolubilization phase kunye ne-spelanular secondary spinel lingaphezulu. I-co-sintered magnesia-chrome izitena inothotho oluthe ngqo oludityaniswe nokusebenza okungcono kwezitena, idume ngokukhethekileyo ngamandla alo aphezulu obushushu, ukumelana nokukhawuleza kobushushu kunye nokumelana ne-slag. Izitena eziqhelekileyo ezenziwe ngamatye ahlukeneyo zinokwahlulwa zibe ziindidi ezimbini, enye isitena esiqhelekileyo esenziwe ngesitena, lonke uthotho lwezinto eziqhelekileyo ezenziwe ngamasuntswana kunye nomgubo ocolekileyo, nokuba uyadutyulwa okanye udityanisiwe ngokwemichiza, ulwakhiwo lwayo luyafana; okwesibini kuyinto eqhelekileyo Kwizitena ezenziwe ngesintyintyintywayo, kukho inxenye yezithako, ezinje ngezinto zokuhombisa ezixhaphakileyo zamasuntswana arhabaxa, kwaye nenxalenye yomgubo ocolekileyo ingaxutywa kwisitena kwinxalenye ethile yentsimbi ye-chore ococekileyo kunye nephepha le-magnesia , ukuze imveliso edutyuliweyo kunye neekhemikhali zidityaniswe ngemicroscopic Isakhiwo sahlukile.

(4) Ukugqitywa kwakhona kwezitena ze-magnesia-chromium: i-magnesia-chromium umgubo oxutywe inyibilikiswa yindlela yokunyibilika kombane, kwaye unyibilikiso ludityaniswa lwenze ulungelelwaniso olufanayo, kunye ne-magnesia-chromium spinel kunye ne-periclase iikristali ezixubileyo njengowona mgangatho uphambili Isixhobo se-magnesia-chromium esidityanisiweyo siyacolwa silingane nesuntswana elithile, sixutywe kwaye sibunjwe, emva koko sidutyulwe ukulungiselela izitena ezenziwe ngokutsha, okanye zisetyenziswe ngokuthe ngqo njengezitena zesamente ezenziweyo.

Ubuncinci bezitena ezidityanisiweyo zibonakaliswa kwinqanaba eliphezulu lokudibanisa ngokuthe ngqo kunye nenqanaba elikhulu lesigaba sokujikeleza kwesipelingi: isiseko sekristale esinexabiso elikhulu lesigaba sokutshabalalisa ngokusisiseko sitshintsha iipropathi zomzimba kunye neekhemikhali zepheriklase, njengokunciphisa ukwandiswa kobushushu ulungelelwaniso. , Ukuphucula ukuxhathisa kukothuka, ukuphucula ukuxhathisa kukhukuliseko lwe-acid-alkaline. Izitena ezidityanisiweyo zineempawu ezifanayo nakwizitena ezifakiweyo, kodwa zinokumelana ngcono notshintsho lobushushu olukhawulezileyo kunye nesakhiwo esincinci ngakumbi kunezitena ezifakiweyo.

Idityaniswe nesitena se-magnesia chrome, sisicazululo esenziwe kakuhle esasazwa ngokufanayo kwepore kunye nee-microcracks, kwaye uvakalelo lwayo kutshintsho ngequbuliso kubushushu lungcono kunokunyibilika nokuphoswa. Ukusebenza kobushushu obuphezulu bemveliso kuphakathi kwezitena ezifakiweyo kunye nezitena eziboshwe ngokuthe ngqo.

(5) Ifakwe yaza yaphosa i-magnesia chrome izitena: Beka umxube we-magnesia kunye ne-chrome ore kwiziko lombane le-arc ukuze unyibilike ngokupheleleyo, emva koko ugalele ukunyibilika kwisikhunta sokuphosa. Ngexesha lenkqubo yokuqinisa, iziseko ze-periclase kunye ne-spinel crystal zenziwa, kwaye kwakhiwa isakhiwo esihle sekristal ngaxeshanye, ke isitena se-magnesia chrome sinezitena ezinobushushu obuphezulu kunye nokumelana ne-slag corrosion.

Izitena zeMagnesium chrome zisetyenziswa ikakhulu kwishishini lokunyibilikisa isinyithi. Icandelo lobushushu obuphezulu eludongeni lweziko lombane lombane elenziwe ngombane lwenziwe ngezitena ezihlanganisiweyo ze-magnesia-chrome, indawo e-errosion ephezulu yesithando somlilo esingaphandle kwesithando senziwe ngezinto zokwenziwa, kwaye phezulu Indawo enesinyithi esinyibilikisayo esenziwe ngesinyithi senziwe ngezitena ze-magnesia-chrome kunye nezinto zokwenziwa. Yenziwe ngemagnesia chrome izitena. Ukongeza, i-magnesia-chrome izitena zikwasetyenziswa kwindawo evuthayo yesamente iilensi ezijikelezayo kunye nokuzihlaziya ngokutsha kwee-kilns zeglasi.

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