Magnesia zvidhinha

Alkaline zvinopesana ne magnesium oxide yezvinhu zvinopfuura 90% uye periclase sechikamu chikuru chekristaro.

1. Iyo Refractoriness yemagnesia zvidhinha yakakwira kunge 2000 ℃, uye iyo yekudzikamisa tembiricha iri pasi pemutoro haina kuchinja zvakanyanya zvichienderana nenzvimbo inonyungudika yechikamu chinosunga uye chikamu chemvura chinogadzirwa pakakwirira tembiricha. Kazhinji, iwo mutoro unopfavisa kutanga tembiricha yemagnesia zvidhinha ndeye 1520 – 1600 ℃, nepo yakakwira-yakachena magnesium ine inorema inodzikisira kutanga tembiricha kusvika ku1800 ℃.

2. Mutoro unopfavisa kutanga tembiricha yemagnesia zvidhinha haina kunyanya kusiyana nekutonhora kwekudonha. Izvi zvinodaro nekuti chikamu chikuru chemagnesia zvidhinha ndeye periclase, asi iwo periclase makristasi mumagnesia zvidhinha haagadzikise sisitimu yeneti, asi akabatanidzwa. Yakasimbiswa. Mune zvakajairika magnesia zvidhinha, zvakadzika-zvinonyungudika silicate zvikamu senge forsterite uye magnesite pyroxene zvinowanzo shandiswa semubatanidzwa. Kunyangwe iyo periclase sekristaro tsanga dzinoita iyo magnesia chidhinha chine nzvimbo yepamusoro yekunyungudika, dzinonyungudika panenge 1500 ° C. Chikamu chesilicate chiripo, uye iyo viscosity yechikamu chayo chemvura ishoma kwazvo patembiricha yakakwira. Naizvozvo, zvinoratidza kuti mutoro deformation tembiricha uye kudonha tembiricha yezvakajairika magnesia zvidhinha hazvina kunyanya kusiyana, asi pane musiyano mukuru kubva pakuferefeta. Iko kutapudza-kutapudza kwekutanga tembiricha yakakwira-yakachena magnesia zvidhinha inogona kusvika 1800 ° C, kunyanya nekuti musanganiswa we periclase zviyo ndeye forsterite kana dicalcium silicate, uye iyo yekunyungudika tembiricha ye eutectic inoumbwa nayo uye MgO yakakwira. , Iyo lattice simba pakati pemakristasi yakakura uye iyo deformation yepurasitiki pakakwirira tembiricha idiki, uye iyo crystal particles yakasanganiswa zvakanaka.

3. Chiyero chakaenzana chekuwedzera chemagnesia zvidhinha pa1000 ～ 1600 ℃ kazhinji 1.0% ～ 2.0%, uye ingangoita kana mutsara. Mune zvigadzirwa zvinokanganisa, iko kupisa kwekushisa kwemagnesia zvidhinha kwechipiri chete kune kabhoni-ine zvidhinha. Inowedzera nekushisa. Yakakwirira uye yakaderera. Pasi pemamiriro ekutonhora kwemvura e1100 ° C, huwandu hwekupisa kwemagetsi magnesia zvidhinha ingori ka1 kana ka2 nguva. Magnesium zvidhinha zvine yakasimba kuramba kune alkaline slags ine CaO uye ferrite, asi isina simba kune acidic slags ine SiO2. Ku

4. Naizvozvo, haifanire kunge iri yakanangana zvakananga nezvidhina zvesilica painenge ichishandiswa, uye inofanira kupatsanurwa nezvidhinha zvisina kwazvakarerekera. Pane tembiricha yemukati, iko kuitisa kwemagnesia zvidhinha kwakadzika kwazvo, asi patembiricha yakakwira, kuitisa kwayo hakugone kufuratirwa. Iko mashandiro emagnesia zvidhinha anosiyana zvakanyanya nekuda kwezvinhu zvakasiyana mbishi, zvigadzirwa zvekugadzira, uye matanho etekinoroji anoshandiswa. Ku

5. Magnesia zvidhinha anoshandiswa zvakanyanya mukugadzira simbi yevira. Vanopisa kupisa, yakakwira-tembiricha yekuverenga maciln uye tunnel kilns muindasitiri inokanganisa.

6. Kazhinji, inogona kukamurwa muzvikamu zviviri: sintered magnesia zvidhinha (inozivikanwawo seinodzinga magnesia zvidhinha) uye nemakemikari akasungwa magnesia zvidhinha (inozivikanwawo seisina kufiridzwa magnesia zvidhinha). Zvidhinha zveMagnesia zvine kuchena kwakanyanya uye kupisa kwepamusoro kupisa kunodaidzwa kunzi kwakasungwa magnesia zvidhinha nekuda kwekubatana kwakananga kwezviyo zve periclase; zvidhinha zvakagadzirwa nefused magnesia sezvinhu zvakagadzirwa zvinonzi zvakasanganiswa zvakasanganiswa magnesia zvidhinha.

7. Alkaline zvigadzirwa zvinopesana ne periclase sechikamu chikuru chekristaro. Icho chigadzirwa chine hunhu hweakakwira tembiricha yakakwira mehendi simba, yakanaka slag kuramba, yakasimba kukwira kwekupokana, uye yakagadzikana vhoriyamu pane yakanyanya tembiricha.

8. Magnesia zvidhinha zvine hunyanzvi hwekuratidzira, yakanaka alkali slag inodzivirira, yakakwira yekutanga tembiricha yekudzikamisa pasi pemutoro, asi murombo kupisa kupisa kwekushamisa. Sintered magnesia chidhinha chakagadzirwa nezvidhinha magnesia zvidhinha senge mbishi. Mushure mekupwanywa, kubatidzwa, kukanya uye kuumbwa, inopihwa panopisa zvakanyanya kubva pa1550 kusvika 1600 ° C. Iyo yekupisa tembiricha yezvakakwira-kuchena zvigadzirwa iri pamusoro pe1750 ° C. Izvo zvisina-kukandwa magnesia zvidhinha zvinoitwa nekuwedzera akakodzera makemikari anosunga kune magnesia, wozo sanganisa, kuumba uye nekuomesa.

9.Iyakanyanya kushandiswa yesimbi inogadzira alkaline yakavhurika moto, girazi remoto zasi uye rusvingo rwevira, chigadziko chenguva dzose yeoksijeni inoshandura, isina-simbi simbi yekuyeredza chirafu, yakanyanya tembiricha tanera yezvidhinha, calcined magnesia zvidhinha uye simende rotary kiln lining, moto wezasi uye choto chekupisa. viravira Masvingo, macheki zvidhinha mune inogadzirisazve yegirazi kiln, nezvimwe.

1. Kupatsanurwa kwemagnesia zvidhinha

Kazhinji, inogona kuganhurwa muzvikamu zviviri: sintered magnesia zvidhinha (inozivikanwawo seinodzinga magnesia zvidhinha) uye nemakemikari akasungwa magnesia zvidhinha (inozivikanwawo seisina kufirita magnesia zvidhinha). Zvidhinha zveMagnesia zvine kuchena kwakanyanya uye kupisa kwepamusoro kupisa kunodaidzwa kunzi kwakasungwa magnesia zvidhinha nekuda kwekubatana chaiko kwepericlase crystal zviyo; zvidhinha zvakagadzirwa nefused magnesia sezvinhu zvakagadzirwa zvinonzi zvakasanganiswa zvakasanganiswa magnesia zvidhinha.

2. Kupatsanura uye kushandiswa kwemagnesia zvidhinha

Zvidhinha zveMagnesia zvine hunyanzvi hwepamusoro, kuramba kwakanaka kune alkaline slag, tembiricha yepamusoro yekutanga yekudzikamisa pasi pemutoro, asi murombo kupisa kupisa kwekushisa. Sintered magnesia chidhinha chakagadzirwa nezvidhinha magnesia zvidhinha senge mbishi. Mushure mekupwanywa, kubatidzwa, kukanya uye kuumbwa, inopihwa panopisa zvakanyanya kubva pa1550 kusvika 1600 ° C. Iyo yekupisa tembiricha yezvakakwira-kuchena zvigadzirwa iri pamusoro pe1750 ° C. Izvo zvisina-kukandwa magnesia zvidhinha zvinoitwa nekuwedzera akakodzera makemikari anosunga kune magnesia, wozo sanganisa, kuumba uye nekuomesa.

Chechitatu, kushandiswa kwemagnesia zvidhinha

Inonyanya kushandiswa kugadzira simbi inogadzira alkaline yakavhurika choto, yemagetsi choto pazasi uye madziro, chigadziko chenguva dzose cheoksijeni chinoshandura, isina-simbi simbi yekuyeredza choto, yakanyanya tembiricha tanera yezvidhinha, calcined magnesia zvidhinha uye simende inotenderera yevira bota, Tarisa pasi uye rusvingo rwekupisa moto, Tarisa zvidhinha zvekugadzirisa girazi kiln, nezvimwe.

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