Nhau

Pakushanda kwemaindasitiri panguva yekupisa kwakanyanya, zvinhu zvinodzivirira kupisa (refractories) zvakakosha kuti michina igare kwenguva refu uye ive yakachengeteka.Inoraswa nealuminium ine refractory ine simba guru—ine 45%–90% yealumina—inoonekwa seyakanakisa, nekuda kwekushanda kwayo kwakanaka munzvimbo dzinopisa zvakanyanya. Pasi apa pane kupfupikiswa kwakadzama kwehunhu hwayo hukuru uye mashandisirwo ayo.

1. Hunhu Hukuru hweHigh-Alumina Refractory Castable

1.1 Kuramba Kwakasimba Kwekupisa Kwakakwirira

Inochengetedza chimiro chayo zvakanaka pa1600–1800℃ kwenguva refu (nekudzivirira kwenguva pfupi kusvika pakakwirira), ichipfuura dzimwe nzira dzealumina dzakaderera. Pamabasa akaita sekugadzira simbi kana simende, izvi zvinoderedza kuvharwa kwekugadzirisa uye zvinowedzera hupenyu hwemichina.

1.2 Simba Repamusoro ReMichina

Nesimba rekudzvanya re60–100 MPa patembiricha yemumba, rinobata huremu nezvinhu zvakawanda pasina kutsemuka. Chinonyanya kukosha ndechekuti rinochengetedza simba pakupisa, richidzivisa kupisa kwakanyanya—rakanakira magirazi anonyunguduka apo tembiricha dzinochinja-chinja, zvichideredza kukundikana kwejira rinodhura.

1.3 Kuramba Kukukurwa Kwevhu Nekutsva Kwevhu
Chimiro chayo chakakora chinotsungirira kukurwa kwemakemikari (semuenzaniso, tsvina yakanyungudutswa, magasi ane acidic) uye kusakara kwemuviri. Muzvigadziri zvesimbi, inodzivirira simbi yakanyungudutswa inoyerera nekukurumidza; muzvipisi zvemarara, inodzivirira magasi ane acidic flue, zvichideredza zvinodiwa pakugadzirisa uye mari.

1.4 Kuisa Zviri Nyore & Kuchinja-chinja
Sehupfu hwakawanda, inosanganiswa nemvura/chinobatanidza kuita slurry inodururwa, ichiisa muchimiro chisina kurongeka (semuenzaniso, makamuri echoto akagadziriswa) ayo zvidhinha zvakagadzirwa kare zvisingakwanise kuenzana nawo. Inogadzira jira rakatsetseka, ichibvisa "kubuda kwemoto" uye inokodzera zvivakwa zvitsva kana zvekugadzirisa.

2. Zvishandiso Zvikuru zveMaindasitiri

2.1 Simbi neSimbi

Inoshandiswa mumachira emoto anoputika (bosh/hearth, >1700℃), machira emagetsi emoto anoputika (EAF), uye machira ekubikisa—anodzivirira kukurwa kwesimbi yakanyungudutswa uye kurasikirwa nekupisa. Inoshandiswawo mumachira anoputika kuti anyungudike nearuminiyamu/mhangura.

2.2 Simende neGirazi
Yakanakira nzvimbo dzinopisa simende muchoto (1450–1600℃) uye machira ekupisa asati agadzirwa, asingatsvedzeri clinker. Mukugadzira magirazi, inosunga matangi anonyungudutsa (1500℃), ichidzivirira ngura yegirazi rakanyunguduka.

2.3 Kugadzirisa Simba & Marara
Inoshandisa mavhiri ebhoyira anoshandiswa nemarasha (anodzivirira madota anobhururuka) uye makamuri ekupisa marara (asingatsvedzi kupisa kwe1200℃ uye zvimwe zvinhu zvine acidic), zvichiita kuti ishande zvakanaka uye kwenguva pfupi.

2.4 Petrokemikari & Kemikari
Inoisa macracker emutsi (1600℃, ekugadzira ethylene) uye makiln anogocha zvicherwa (semuenzaniso, fetiraiza), inotsungirira utsi hwehydrocarbon uye makemikari anoparadza.

3. Sei Uchifanira Kusarudza?

Hupenyu Hurefu:Inogara kwenguva yakareba ka2-3 kupfuura zvinhu zvevhu zvinokandwa, zvichiita kuti zvisatsiviwe.

Inodhura Zvishoma:Mutengo wepamusoro wekutanga unoderedzwa nekushomeka kwekugadzirisa uye hupenyu hurefu.

Zvinogoneka kugadziriswa:Kuwanda kweAlumina (45%–90%) uye zvimwe zvinowedzerwa (semuenzaniso, silicon carbide) zvinogadzirwa zvinoenderana nemapurojekiti.

4. Batana neMutengesi Akavimbika

Tsvaga vatengesi vanoshandisa zvinhu zvakachena kwazvo, vachipa mafomura akagadzirwa, nhungamiro yehunyanzvi, uye kutumirwa panguva. Ingave yekuvandudza chitofu chesimbi kana kuisa mukati mechoto chesimende, chitofu chinogadziriswa nealumina chakasimba chinoita kuti chive chakavimbika - taura nesu nhasi kuti uwane mutengo.