Indasitiri yemapepa ndiyo inonyanya kushandisa zvigadzirwa zveSodium Sulfite. Sodium Sulfite ndeimwe yenzira dzakakosha dzekugadzira mapepa muindasitiri yekugadzira mapepa, kunyanya yakakodzera kushandiswa kwepurasitiki isiri yehuni. Zvakanakira nzira iyi yekudhinda mavara akareruka, kushandiswa kushoma kwe bleaching agent nemamwe makemikari, uye marara emvura anogona kudzokororwa kugadzira zvakasiyana-siyana zvemaproduct. Sodium sulfite anhydrous inoshandiswa mukubika uswa hwegorosi hwealkali, goho re pulping riri nani zviri pachena, slurry furo shoma, kusefa kwakanaka, kushambidzwa kuri nyore, kuchengetedza mvura, kuderedza kushandiswa kwesimba. Dhigirii rekurova slurry rakaderera, simba refiber rakanaka, nyore kugadzira bepa. Ruvara rwepaste rwakareruka, nyore kubleach uye kuderedza huwandu hwechlorine. Pa 160℃, 20% (hukuru) Sodium Sulfite yakaratidza mhedzisiro yakanaka yekubvisa masaga nefiber, uye chiyero chekubvisa chakasvika pamusoro pe48% mushure memaminitsi makumi matatu.
Nekufambira mberi kuri kuita indasitiri yekugadzira mapepa, kudzokorodza fiber yechipiri kunokosheswa zvikuru neindasitiri yekugadzira mapepa, iyo isingangogone kuchengetedza mari yekugadzira mapepa chete, asiwo kuchengetedza zviwanikwa zvemasango, kuderedza kushandiswa kwesimba, uye inobatsira kuchengetedzwa kwezvakatipoteredza. SSA imushonga wakanaka wekubvisa inki, uyo une basa guru mukubvisa inki kudzivirira pulp kuti isatsvedze, uye kubvisa sodium sulphite mumamiriro ealkaline asina kusimba kunobatsira zvikuru kubvisa inki. Kana pasina surfactant, pwanyika pahuwandu hwe10% hweslurry, kuwedzera 2% sodium sulfite kune mhedzisiro yakajeka. Neutral sodium sulfite inoshandiswa kubvisa inki mupepanhau rekare, uye huwandu hwesodium sulfite i3% ~ 4%, iyo inogona kuwana mhedzisiro yakanaka yekubvisa inki, kuderedza kusvibiswa kwemvura yakasviba, uye inobatsira pakurapa kwemvura yakasviba gare gare.
Nguva yekutumira: Kurume-30-2021