Kukonzekera njira ya mica pepala zamkati calcining mankhwala pulping

The mica anapatukana ndi calcined pa kutentha kwambiri kuchotsa mbali ya madzi crystal mu mica dongosolo, kuti mica flakes adzakulitsa mu malangizo perpendicular kwa cleavage pamwamba, ndi kapangidwe adzakhala ofewa, ndiyeno mankhwala mankhwala kuti Mica flakes yodzaza Kupatukana kwa nthaka kumagawanika, kenako kumatsukidwa ndikuikidwa kukhala slurry. Pepala la mica lomwe limapangidwa ndi njira iyi limatchedwa powder mica paper.

a. Kusanja ndi kuyanika kwa mica zopangira

Zopangira zomwe zimagwiritsidwa ntchito pamapepala achilengedwe a mica makamaka ndi zinyalala za mica yophwanyidwa ndi flake mica processing. Cholinga cha kusanja ndicho kuchotsa zomatira, biotite, mica yobiriwira, ndi zonyansa zina ndi zonyansa zakunja zomwe sizoyenera kupanga mapepala a mica. Pofuna kuonetsetsa kuti mica ili bwino, mica flakes yokhuthala kwambiri kuposa 1.2mm iyenera kuchotsedwa. Mica yosanjidwa imatsukidwa powonjezera madzi pa cylindrical sikirini kapena chotchinga chonjenjemera kuchotsa zonyansa monga mchenga ndi mchenga mu mica material ndikusefa zinthu zabwino zomwe ndi zazing’ono kwambiri kuti ziyeretse ma mica. Mica yoyeretsedwa ili ndi 20% ~ 25% ya madzi, omwe ayenera kuchotsedwa kuti achepetse zomwe zili m’madzi ophatikizidwa kukhala osachepera 2%. Kuyanika kumachitika pa chowumitsira lamba lapadera, pogwiritsa ntchito nthunzi ngati gwero la kutentha.

b. Kuwerengera kwa mica

Ikani mica mu ng’anjo yapadera yamagetsi, itenthetse mpaka 700 ~ 800 ℃, ndikuisunga kwa 50 ~ 80min kuti muchotse madzi a kristalo mu mica makhiristo, ndikupeza mica zakuthupi zapamwamba za pulping. Kuwerengetsera kwa mica pakadali pano kumagwiritsa ntchito ma kiln otenthetsera osalunjika. Chomera cha mica calcined chiyenera kufufuzidwa kuti chichotse silt, phulusa loyaka ndi zidutswa za mica zokhala ndi mainchesi osakwana 6mm zomwe poyamba zidayikidwa pakati pa mica. Ubwino wa calcining wa mica umakhudza mphamvu zamagetsi, kusinthasintha, kukana kupindika, kulimba kwamphamvu komanso kutulutsa kwa pepala la mica.

c. Kukonzekera kwa ufa mica slurry

The calcined mica (clinker) amapangidwa ndi mankhwala kuti apange scaly slurry yomwe imatha kumwazikana m’madzi ndikuyimitsidwa mofanana, ndipo zonyansa zosungunuka m’madzi zimachotsedwa ndi kutsuka kuti zigwirizane ndi zofunikira pakupanga mapepala.