Phosphate inopfeka isingagadzike zvidhinha

Phosphate-yakasimbiswa yakakwirira-aruminiyamu inopfeka-isingadhuri zvidhinha inonziwo phosphate inopfeka inopesana nephosphate yekupfeka-isingadhuri zvidhinha. Phosphate inopfekwa nemishonga yezvidhinha imhando yezvinhu zvinokanganisa, zviri zvemhando yepamusoro bauxite clinker kana gobvu phosphoric acid mhinduro seyakanyanya mbishi zvinhu, kana aluminium phosphate bhainda, Mushure mekumanikidzwa nekuumbwa nemuchina wakaoma, unopisa kupisa pa400-600 ℃ kugadzira zvigadzirwa zvine makemikari zvakabatanidzwa. Inosanganiswa nezvidhinha. Kuti udzivise shrinkage hombe panguva yekushandiswa kwechigadzirwa patembiricha yakakwira, izvo zvinoshandiswa zvinowanzoda kuunza kudziyisa kuwedzera mbishi zvigadzirwa, senge kyanite, sillimanite, pyrophyllite, uye silicon carbide. Sintered neakakwira alumina zvidhinha uye ceramics, kuramba peeling kuri nani, asi iko kupfavisa tembiricha yakaderera uye ngura kuramba, saka diki fused corundum, mullite, nezvimwewo zvinoda kuwedzerwa kusimbisa matrix. Kubva pane phosphoric acid uye phosphoric acid inodzivirira zvidhinha, zvidhina zvinonyangadza zvakagadzirwa neakajairika epamusoro alumina zvidhinha kuburikidza nehunyanzvi tekinoroji uye zvemakemikari zvinowedzerwa zvakagadzirisa zvakanyanya kuramba kwekurwisa uye kutapudza kwekurerutsa, zvakakwirira kupfuura zvidhinha zvealumumina, simba rakanaka, kutonhora nekukurumidza uye nekukurumidza kupisa kupisa, Nemishonga kuti kemikari ngura uye hasha. Chitarisiko chayo chakakwirira kupfuura icho cheakakwira alumina zvidhinha mune simende rotary kilns.

Unyanzvi hwekuita:

(1) Yakakwira tembiricha yekudzivirira kuita kwakanaka, iko kunopisa tembiricha kwakakura kupfuura madigiri 1770, inogona kumira tembiricha yakakwira, uye kushanduka kwedzakanyanya tembiricha hakune simba rakakura.

(2) Yakanaka kugadzikana kwekupisa, kupokana nekukurumidza kutonhora uye nekukurumidza kupisa, uye hapana delamination kana peeling pasi pekuchinja tembiricha.

(3) Kemikari kuramba, hapana kutsemuka uye peeling kunoitika muCo mumhepo pane tembiricha ye400-600 ° C.

(4) Yakanaka kupfeka kuramba uye yakakwira compressive simba.

Zvidhinha zvephosphate zvakaonekwa semhando yepamusoro yezvidhinha zvemasimendi emakirini nemakirimi.

Kune mhando mbiri dzephosphate-dzakasungwa dzakakwirira alumina zvidhinha: imwe phosphate-yakasungirirwa yakakwirira-alumina zvidhinha (inonzi phosphate zvidhinha), uye imwe phosphate-yakasungwa yakakwirira-alumina zvidhinha (inonzi seyakapfeka-isingadhuri zvidhinha).

Phosphate zvidhinha zvinoshandisa phosphoric acid mhinduro ine huwandu hwe42.5% kusvika 50% seye bhainda, uye huwandu hwayo ndeye bauxite clinker yakavezwa patembiricha iri pamusoro pe1600 ° C mubhiri rinotenderera. Munguva yekushandiswa kwezvidhinha, phosphoric acid inopindirana neiyo yakanaka bhauxite upfu muzvidhinha kuti zviitane nevhu rinokanganisa, uye pakupedzisira rinogadzira bhainda rinonyanya kuverengerwa nekristobalite aluminium orthophosphate. Kupfeka zvidhinha zvinoshandisa maindasitiri phosphoric acid uye maindasitiri aluminium hydroxide kugadzirira aluminium phosphate solution se binder. Chiyero chayo chema molar ndiAl2O3: P2O5 = 1: 3.2. Iyo huwandu hwakashandiswa hwakafanana neiyo yezvivakwa zvephosphate. Mukuita kwekushandisa zvidhinha, senge phosphate, bhainda rakavakirwa pane cristobalite-mhando aluminium orthophosphate inogadzirwa.

Zvidhinha zvephosphate zvakakodzerana nemuromo wevira yenzvimbo inoshanduka yemakoto anotenderera uye zvimwe zvikamu uko zvidhinha zviri nyore kudonha, uye zvakare zvinobatsira kune yekupfura nzvimbo. Inoshandiswawo mumakaniki shaft kilns, lime kilns, kabhoni indasitiri Rotary kilns, nezvimwe.

Chigadzirwa chinoshanda: Ine hunhu hwesimba rekumanikidza pakushambidzika kwemukati, yakanaka yekupisa yekuvhundutsa kugadzikana, yakanyanya kurerutsa tembiricha, zviyero chaizvo, huwandu hwehuwandu hwehuwandu, uye yakanaka kuramba kupfeka.

Zviratidzo zvemuviri uye zvemakemikari ezvitinha zvephosphate: