Yakakwira alumina chidhinha chekuputika choto

Yakakwirira alumina zvidhinha zvekuputika maficha inoreva zvigadzirwa zvinogadziriswa zvakagadzirwa kubva kumusoro alumina bauxite clinker ine Al2O3 yezvinhu zvinopfuura makumi masere nemasere muzana uye yaishandiswa kuvaka mhepo yekufema. Iyo yekutsva kwevira ndiyo hombe midziyo yekugadzira iron, uye ivhu zvidhinha ndizvo zvinhu zvekunamatira izvo zvakashandiswa pakutanga kwazvo mu blast furna. Kutanga muma48, vhoriyamu remoto wekufema rakura kusvika padanho hombe, uye 1950-8m dhayamita machira ave akajairika. Kubudirira kwawedzera nekukurumidza. Nekudaro, iyo yevira chiuno uye dumbu ngura zviri pachena zvinokanganisa kugadzirwa kweRuo blast furna. Iyo nzira yekugadzira yeakakwira alumina zvidhinha uye yakawanda-inonamira ivhu zvidhinha zvakafanana. Musiyano ndewekuti chikamu chekliniki muzvinhu zvakakwirira.

Blast furna yakakwirira alumina zvidhinha zvinoreva zvigadzirwa zvinokanganisa zvakagadzirwa kubva kumusoro alumina bauxite clinker ine Al2O3 zvemukati zvinopfuura 48% uye yakashandiswa kuvaka kufuridza mavira.

Iyo yekutsva kwevira ndiyo hombe midziyo yekugadzira iron, uye ivhu zvidhinha ndizvo zvinhu zvekunamatira izvo zvakashandiswa pakutanga kwazvo mu blast furna. Kutanga muma1950, vhoriyamu remoto wekufema rakura kusvika padanho hombe, uye 8-12m dhayamita machira ave akajairika. Kubudirira kwawedzera nekukurumidza. Nekudaro, iyo yevira chiuno uye dumbu ngura zviri pachena zvinokanganisa kugadzirwa kweRuo blast furna.

Unyanzvi:

Iyo nzira yekugadzira yeakakwira alumina zvidhinha uye yakawanda-inonamira ivhu zvidhinha zvakafanana. Musiyano ndewekuti chikamu chekliniki muzvinhu zvakakwirira, izvo zvinogona kuve zvakakwirira se 90-95%. Iyo clinker inoda kurongedzwa uye kubviswa kuti ibvise simbi isati yapwanya, uye tembiricha yekupfura Yakakwira, senge Ⅰ, Ⅱ yakakwira alumina zvidhinha zvinowanzo kuve 1500 ～ 1600 ℃ pavanodzingirwa mugero remwenje.

Kugadzira tsika muChina kwakaratidza kuti usati wapwanya, yakakwira-aruminiyamu clinker yakasarudzika uye yakarongedzwa, uye inochengetwa mumatanho. Iko kushandiswa kwebauxite clinker uye yakasanganiswa yevhu yakanaka yekugedza nzira inogona kuvandudza chigadzirwa chigadzirwa.

kuita:

a. Refractoriness

Iko kudzvanyirira kweakakwira alumina zvidhinha kwakakwirira kupfuura izvo zvevhu zvidhinha uye semi-silika zvidhinha, inosvika 1750 ~ 1790 ℃, inova yepamusoro-mhando inoratidzira zvinhu.

b. Takura tembiricha inopfavisa

Nekuti zvigadzirwa zve-alumina zvine Al2O3 yakakwira, marara mashoma, uye mashoma egirazi fusible miviri, tembiricha inodzikamisa mutoro iri pamusoro kupfuura yezvidhinha zvevhu. Nekudaro, nekuti mullite makristasi haagadzi chimiro chenetiweki, tembiricha inodzikamisa tembiricha haisati yakakwira seiya yezvidhinha zvesilica.

c. Kurwisa kweSlag

Yakakwira alumina zvidhinha zvine Al2O3 yakawanda, iri padhuze nekusarerekera zvinhu zvinopesana, uye inogona kudzivisa kukukurwa kweacidic slag uye alkaline slag. Nekuda kwekuisirwa kweSiO2, kugona kurwisa alkaline slag haina kusimba pane iyo yeacidic slag.

Maitiro ekugadzirisa:

Natural zvakasikwa bauxite zvinhu zvinoda zvakanaka kuverenga uye kuomarara kupatsanura. Iyo iron oxide yemukati mukuongororwa kwemakemikari inodzorwa pazasi pe1.2%, uye hapana akasungwa masimbi mavara kana esimbi macores anotenderwa. High grade uye yakachena kuchena zvinodiwa. Yakaumbwa neakakwira-tonnage chidhinha, chimiro chechidhinha chinowanzoitika, uye hapana pevhu mambure-kunge kutsemuka uye kwemukati delamination zvinotenderwa. Ita shuwa kukwirira kwezvidhinha uye kupisa kupisa hakusi pasi pe1500 ℃.