Cryolite, tseem hu ua sodium hexafluoroaluminate los yog sodium aluminium fluoride, muaj xim tsis muaj xim, dawb zoo crystals nyob rau hauv tsos, thiab kuj muaj lub teeb grey, lub teeb xim av, lub teeb liab los yog cib liab. Lub hardness ntawm cryolite yog 2-3, yog li nws yooj yim dua rau nqus dej thiab ntub dej.
Cryolite feem ntau yog siv los ua cov khoom hnav-tiv taus rau kev sib tsoo lub log thiab roj hmab, uas tuaj yeem txhim kho lub zog ntawm kev sib tsoo lub log, muaj kev cuam tshuam zoo dua hauv kev sib tsoo thiab txiav, thiab ncua lub neej kev pab cuam thiab lub sijhawm cia ntawm kev sib tsoo. Nws kuj tseem siv tau los ua cov flux rau txhuas electrolysis, enamel opalescent tus neeg saib xyuas, iav opacifier thiab hlau flux, thiab lwm yam. aluminium, thiab muaj cov khoom siv hluav taws xob zoo dua, uas tuaj yeem txuag hluav taws xob. Nws yog vim hais tias ntawm lub hav zoov ntawm cryolite uas muaj xws li ib tug loj-scale txhuas kev lag luam nyob rau hauv lub ntiaj teb no.
Cov muaj pes tsawg leeg ntawm cryolite yog cov ntshiab, thiab qee zaum nws yuav muaj Ca, Fe, Mn thiab cov organic teeb meem, tab sis lawv tag nrho cov me me.
Hom ntawm cryolite:
Cryolite tuaj yeem muab faib ua qhov sib piv siab molecular cryolite thiab qis molecular ratio cryolite, uas tau txhais raws li qhov sib piv molecular ntawm sodium fluoride rau txhuas fluoride. Qhov sib piv molecular ntawm qis molecular ratio cryolite yog 1.8-2.2. Txawm li cas los xij, polymers yog ib puag ncig zoo dua li cryolite thiab muaj txiaj ntsig zoo dua kev lag luam. Yog li ntawd, qee lub tsev lag luam electrolytic aluminium feem ntau siv polymer cryolite ua cov electrolyte rau txhuas electrolysis. Hais txog lub cev muaj zog, cryolite tuaj yeem muab faib ua peb pawg: sandy cryolite, granular cryolite thiab hmoov cryolite.
1. Nta ntawm cov xuab zeb cryolite:
◆ Lub melting point yog tsawg thiab melting ceev ceev, uas yuav txhim khu kev ua hauj lwm efficiency;
◆ Qhov sib piv molecular tuaj yeem hloov kho ntau yam, yog li nws tuaj yeem hloov mus rau qhov sib txawv ntawm cov kev xav tau ntawm cryolite molecular ratio nyob rau lub sijhawm sib txawv ntawm cov cell electrolytic;
◆ Cov dej noo tsawg, yog li qhov poob ntawm fluorine yuav tsawg;
◆ Granular yuav muaj fluidity zoo dua thiab kev thauj mus los yooj yim dua;
◆ Cov nqi tsim khoom qis dua.
2. Nta ntawm granular cryolite:
◆ Nws muaj fluidity zoo dua thiab tsim nyog rau kev txiav tshuab;
◆ Hauv kev tsim hluav taws xob electrolytic, muaj tus nqi siab dua, uas yuav pab txo cov nqi ntawm electrolytic aluminium;
◆ Nws yog qhov tsim nyog rau qhov qhib ntawm electrolytic aluminium, vim nws qhov sib piv molecular nyob nruab nrab ntawm 2.5-3.0;
◆ Qhov sib txawv yog nyob nruab nrab ntawm 1-10mm.
3. Nta ntawm hmoov cryolite:
◆ Qhov loj me me feem ntau yog siab dua 200 mesh;
◆ Vim tias nws qhov sib piv molecular mus txog 1.75-2.5, nws muaj qhov hloov tau zoo;
◆ Tus nqi dhau ntawm 325 mesh yog siab dua 98 feem pua, uas tuaj yeem ua tau raws li cov kev cai nruj ntawm cryolite hauv qee qhov kev lag luam tshwj xeeb.
