Indlela yokulungiselela ye i-mica paper uginindela calcining chemical pulping

I-mica ehlukanisiwe ibalwa ekushiseni okuphezulu ukuze isuse ingxenye yamanzi e-crystal esakhiweni se-mica, ukuze ama-mica flakes azonwebeka aqonde endaweni eqondile ye-cleavage surface, futhi ukuthungwa kuzothamba, bese kulashwa ngamakhemikhali ukuze kwenziwe. ama-mica flakes agcwele Ukuhlukaniswa komhlabathi kuyahlukaniswa, bese kuyagezwa futhi kuhlukaniswe kube udaka. Iphepha le-mica eligoqwayo futhi lenziwe ngale ndlela libizwa ngokuthi i-powder mica paper.

a. Ukuhlunga nokomisa kwe-mica eluhlaza

Izinto zokusetshenziswa ezisetshenziswa ephepheni le-mica lemvelo ikakhulukazi izinsalela ze-mica echotshoziwe yemvelo kanye nokucubungula kwe-flake mica. Inhloso yokuhlunga ngokuyinhloko ukususa ama-adhesive flakes, i-biotite, i-mica eluhlaza, nokunye ukungcola nokungcola kwangaphandle okungafanelekile ukwenza iphepha le-mica. Ukuze uqinisekise ikhwalithi yokubala ye-mica, ama-mica flakes aminyene anogqinsi olungaphezu kuka-1.2mm kufanele asuswe. I-mica ehlungiwe ihlanzwa ngokungeza amanzi esikrinini esiyisilinda noma isikrini esidlidlizayo ukuze kukhishwe ukungcola okufana nesihlabathi nesihlabathi ku-mica material futhi kusefe izinto ezinhle ezincane kakhulu ukuze zihlanzeke okokusebenza kwe-mica. I-mica ehlanzekile iqukethe u-20% ~ 25% wamanzi, okumele asuswe ukuze kuncishiswe okuqukethwe kwamanzi anamathiselwe ngaphansi kuka-2%. Ukomisa kwenziwa kumshini wokomisa ibhande okhethekile, kusetshenziswa umusi njengomthombo wokushisa.

b. Ukubalwa kwe-mica

Faka i-mica esithandweni somlilo esithile sikagesi, uyishise ifike ku-700~800℃, bese uyigcina imizuzu engu-50~80 ukuze ususe amanzi ayikristalu kumakristalu e-mica, futhi uthole impahla yekhwalithi ephezulu ye-mica yokudonsa. Ukubalwa kwe-mica okwamanje kusetshenziswa kakhulu izikloni zokushisisa ezijikelezayo. I-mica clinker ebaliwe idinga ukubhekwa ukuze kukhishwe udaka, umlotha ovuthayo nezingcezu ze-mica ezinobubanzi obungaphansi kuka-6mm ebezifakwe phakathi phakathi kwezingqimba zemica. Izinga lokubala le-mica lizothinta izici zikagesi, ukuguquguquka, ukumelana nokugoqa, amandla aqinile kanye nezinga lokudonsa kwephepha le-mica.

c. Ukulungiswa kwe-powder mica slurry

I-calcined mica (i-clinker) iphathwa ngamakhemikhali ukuze iyenze ibe yi-scaly slurry engahlakazwa emanzini futhi imiswe ngokufanayo, futhi ukungcola okuncibilika emanzini kukhishwa ngokuwashwa ukuze kuhlangabezane nezidingo zenqubo yokwenza iphepha.