Kugadzirira nzira ye mica paper pulp calcining kemikari pulping

Iyo yakapatsanurwa mica inoverengerwa pakupisa kwakanyanya kubvisa chikamu chemvura yekristaro mumica chimiro, kuitira kuti mica flakes iwedzere munzira perpendicular kune cleavage pamusoro, uye magadzirirwo acho anove akapfava, uye obva abatwa nemakemikari kugadzira. iyo mica flakes yakazara Kuparadzaniswa kwepasi kunoparadzaniswa, uye zvino inoshambidzwa uye inorongwa kuva slurry. Iyo mica bepa inopepetwa uye yakagadzirwa neiyi nzira inonzi poda mica bepa.

a. Kuronga uye kuomesa mica mbishi zvinhu

Zvinhu zvakapfava zvinoshandiswa mupepa remica zvechisikigo zvinonyanya zvisaririra zvechisikigo chakapwanyika mica uye flake mica processing. Chinangwa chekugadzirisa ndechekubvisa maflakes ekunamatira, biotite, mica yakasvibirira, uye kumwe kusvibiswa uye kusvibiswa kwekunze kusina kukodzera kugadzira mica paper. Kuti ive nechokwadi chemhando yecalcining ye mica, mica flakes yakakora ine ukobvu hunodarika 1.2mm inofanira kubviswa. Iyo mica yakarongwa inocheneswa nekuwedzera mvura mucylindrical screen kana vibrating screen kuti ibvise tsvina yakaita sejecha nejecha mumica material uye kusefa zvinhu zvakanaka izvo zvidiki zvakanyanya kuchenesa mica. Iyo mica yakacheneswa ine 20% ~ 25% yemvura, iyo inofanirwa kubviswa kuti ideredze zviri mukati memvura yakanamirwa kusvika pasi pe2%. Kuomesa kunoitwa pane yakakosha bhandi yekuomesera, uchishandisa steam senzvimbo yekupisa.

b. Calcination ye mica

Isa mica muvira chairo remagetsi, pisa kusvika 700 ~ 800 ℃, uye uchengete kwe 50 ~ 80min kuti ubvise mvura yekristaro mumica crystals, uye uwane yemhando yepamusoro mica zvinhu zvekupuruzira. Iyo calcination ye mica parizvino inonyanya kushandisa isina kunanga kudziyisa rotary kilns. Iyo calcined mica clinker inoda kuvhenekwa kuti ibvise silt, dota rinopisa uye zvimedu zvemica zvine dhayamita isingasviki 6mm izvo zvakamboiswa sandwich pakati pemica layer. Iyo calcining mhando ye mica inokanganisa zvimiro zvemagetsi, kuchinjika, kupeta kuramba, kusimba simba uye pulping rate ye mica bepa.

c. Kugadzirira kwehupfu mica slurry

Iyo calcined mica (clinker) inogadziriswa nemakemikari kuti iite scaly slurry inogona kuparadzirwa mumvura uye yakaturikwa zvakafanana, uye tsvina inonyunguduka mumvura inobviswa nekugeza kuti isangane nezvinodiwa zvekugadzira mapepa.