Ndeapi marudzi e yakakwirira alumina zvidhinha anowanzo shandiswa muhovhoni dzeindasitiri?

Yakakwira alumina zvidhinha inoreva chigadzirwa chakasimwa chine zvinopfuura 348% Al2O aluminosilicate kana yakachena alumina. Kazhinji, zvidhinha zvakakwirira zvealuminium zvine zvisingasviki 80% Al2O3, uye izvo zvine zvinopfuura 80% Al2O3 zvinonzi corundum zvidhinha. Kuenzaniswa nezvidhinha zvevhu, yakakwira alumina zvidhinha zvine mabhenefiti akatanhamara epamusoro refractoriness uye yakanyanya kunyorova tembiricha pasi pemutoro. Mukushandiswa kwemafuta emaindasitiri, zvidhinha zvakajairika zvealuminium zvinowira muzvikamu zvishanu zvinotevera.

(1) Zvidhinha zvakakwirira zvealuminium

Iyo huru yemaminerari yekuumbwa kwezvidhinha ndeye mullite, corundum uye girazi chikamu. Sezvo zvirimo zveAl2O3 muchigadzirwa zvichiwedzera, mullite uye corundum inowedzerawo, chikamu chegirazi chinoderera zvinoenderana, uye refractoriness uye kupisa kwakanyanya kwechigadzirwa kuchawedzera zvinoenderana. Zvidhinha zvakajairika zvepamusoro-aluminium zvine mutsara wezvinhu zviri nani zvekudzivirira moto pane zvigadzirwa zvevhu, uye zvinhu zvine maitiro akanaka ekushandisa uye huwandu hwakawanda hwekushandisa. Inoshandiswa zvakanyanya mumhando dzakasiyana-siyana dzekupisa. Kuenzaniswa nezvigadzirwa zvevhu, hupenyu hwebasa rehuni hunogona kuvandudzwa.

(2) Yakakwirira mutoro wakapfava yakakwirira alumina zvidhinha

Kuenzaniswa neyakajairwa yakakwira aluminium zvidhinha, yakakwira-mutoro yakapfava yakakwira-aluminium zvidhinha zvakasiyana muchikamu chematrix uye chikamu chebinder: chikamu chematrix chinowedzerwa nematombo matatu-concentrate, uye kuumbwa kwemakemikari mushure mekupfurwa kuri padyo neiyo theoretical kuumbwa kwe. mullite, iyo inounzwa zvine musoro Shandisa yakakwirira-aluminium zvinhu, zvakadai secorundum powder, high-aluminium corundum powder, nezvimwewo; sarudza yepamusoro-soro ivhu rakaita spherical sechinhu chinosungirirana, uye shandisa ivhu rakasiyana-siyana rinobatanidza bonding agents kana mullite bonding agents zvichienderana nekusiyana. Kuburikidza nenzira iri pamusoro, tembiricha yekupfavisa mutoro yezvidhinha zvakakwirira zvealumina inogona kuwedzerwa ne50 kusvika 70°C.

(3) Yakaderera inokambaira yakakwira alumina zvidhinha

Kuvandudza kurwisa kwekukwira kwealumina yakakwira zvidhinha nekutora iyo inonzi isina kuenzana kuita. Kureva, maererano nekushandiswa kwekushisa kwechoto, wedzera matombo matatu emaminerari, activated alumina, nezvimwewo kune matrix kugadzira kuumbwa kwematrix pedyo kana zvachose mullite, nokuti mulliteization yematrix ichawedzera kuwedzera mullite. zviri mukati mezvinyorwa, Deredza chikamu chegirazi chemukati, uye yakanakisa mechaniki uye yekupisa zvimiro zvemullite zvinokonzeresa kuvandudzwa kwekushisa kwakanyanya kwechinyorwa. Kuti uite matrix azere mullite, kudzora Al2O3 / SiO2 ndiyo kiyi. Zvidhinha zvakaderera zvinokambaira zvakakwirira zvealuminium zvinoshandiswa zvakanyanya mumoto unopisa unopisa, mavhiri anoputika uye mamwe makini ekupisa.

(4) Phosphate yakasungwa yakakwira alumina zvidhinha

Phosphate-yakasungirirwa yakakwira aluminium zvidhinha inogadzirwa ne compact super-giredhi kana yekutanga-giredhi yakakwira-alumina bauxite clinker seyakanyanya mbishi, phosphate solution kana aluminium phosphate solution sebinder, mushure mekuumbwa kwesemi-dry press, kupisa kupisa pa400 ~ 600 ℃ Yakagadzirwa nemakemikari akasungwa refractory zvigadzirwa. Chidhinha chisina kupiswa. Kuti udzivise shrinkage yakakura yechigadzirwa panguva yekushandiswa, zvinowanzodikanwa kuunza kupisa-kuwedzeredza zvinhu mbishi, senge kyanite, silica, nezvimwe, muzvigadzirwa. Kuenzaniswa neceramic yakasungirirwa yakapfurwa yakakwira alumina zvidhinha, mashandiro ayo ekudzivirira-kubvisa ari nani, asi tembiricha yekunyorovesa mutoro wayo yakadzikira, uye kuramba kwayo kwekuora kwakashata. Nokudaro, zvishoma zvefused corundum, mullite, nezvimwewo zvinoda kuwedzerwa kusimbisa matrix. Phosphate yakasungirirwa zvidhinha zvakakwirira zvealumina zvinoshandiswa zvakanyanya mu simende rotary kilns, matenga echoto chemagetsi uye zvimwe zvikamu zvemoto.

(5) Micro-kuwedzera yakakwira alumina zvidhinha

Chidhinha chacho chinonyanya kugadzirwa ne-high-alumina bauxite sechinhu chikuru chakasvibirira, chakawedzerwa nematombo matatu akabatanidzwa, uye chinogadzirwa maererano nekugadzirwa kwezvidhinha zvepamusoro-aluminium. Kuti unyatso wedzera zvidhinha zvakakwirira zvealuminium panguva yekushandiswa, kiyi ndeyekusarudza iyo matombo matatu-ibwe uye saizi yaro, uye kudzora tembiricha yekupisa, kuitira kuti chikamu cheakasarudzwa-matombo matatu emaminerari ave mullite uye mamwe matatu matatu. -stone minerals inoramba iripo. Iwo akasara ematombo matatu emaminerari anowedzerwa mulliteized (yekutanga kana yechipiri mulliteized) panguva yekushandiswa, inoperekedzwa nekuwedzera vhoriyamu. Iyo yakasarudzwa-matombo matatu emaminerari ndiyo inonyanya kuumbwa zvinhu. Nekuti tembiricha yekuora yemaminerari matatu ematombo akasiyana, kuwedzera kunokonzerwa ne mullite petrochemical kwakasiyanawo. Uchishandisa chimiro ichi, zvidhinha zvakakwirira zvealuminium zvine maitiro ekuwedzera anoenderana nekuda kwekusiyana kwekushisa kwekushanda. Kusvinwa kwemajoini ezvidhinha kunonatsiridza kusungirirwa kwese kwemuviri wemucheka, nekudaro kunatsiridza kushorwa kwezvidhinha kupinda slag.