Mukugadzirwa kwemapepa emazuva ano, zvinhu zvinoshandiswa zvakanyanya ipepa rakaraswa nepepa rakaraswa, asi dzimwe nguva mapepa akaraswa nepepa rakaraswa hazviwanikwe mune dzimwe nzvimbo, zvakaoma kuwana kana kuti zvinodhura zvakanyanya kutenga, muchiitiko ichi, mugadziri anogona kufunga nezvekushandisa uswa hwegorosi sezvinhu zvakaraswa kugadzira bepa, uswa hwegorosi chinhu chinowanikwa mukurima, chiri nyore kuwana, chakawanda uye chinodhura zvishoma.
Zvichienzaniswa nefiber yehuni, fiber yegorosi yakakangwa uye isina simba, hazvisi nyore kuibvisa chena, saka kazhinji, frag yegorosi inonyanya kushandiswa kugadzira fluting paper kana corrugated paper, imwe paper mill inosanganisawo grit straw pulp ne virgin pulp kana waste paper kugadzira tissue bepa kana office bepa risina kunaka, asi fluting bepa kana corrugated paper inoonekwa sechigadzirwa chinonyanya kufarirwa, nekuti maitiro ekugadzira ari nyore uye mutengo wekugadzira wakaderera.
Kuti pagadzirwe bepa, huswa hwegorosi hunofanira kutanga hwachekwa, hurefu hwe20-40mm hunofarirwa, zviri nyore kuti huswa hutamiswe kana kusanganiswa nemakemikari ekubika, muchina wekucheka huswa hwegorosi unokumbirwa kuita basa racho, asi nekuchinja kweindasitiri yekurima yemazuva ano, gorosi rinowanzo torwa nemashini, muchiitiko ichi, muchina wekucheka hauonekwe sewakakosha. Mushure mekucheka, huswa hwegorosi huchatamiswa kuti husanganiswe nemakemikari ekubika, nzira yekubika ye caustic soda inowanzo shandiswa mukuita uku, kuderedza mutengo wekubika, mvura ye limestone inogonawo kufungwa nezvayo. Mushure mekunge huswa hwegorosi hwasanganiswa zvakanaka nemakemikari ekubika, huchatamiswa kune spherical digester kana pasi pevhu, kana paine zvinhu zvidiki zvekubika, pasi pevhu zvinokurudzirwa, kuvaka mabasa ehurumende, mutengo wakaderera, asi kushanda kwakaderera. Kuti uwane kugona kwakakwirira kwekugadzira, unofanirwa kufunga nezvekushandisa spherical digester kana contiguous cooking device, mukana wekubika unoshanda, asi zvechokwadi, mutengo wemidziyo waizove wakakwirawo. Dziva rekubikira riri pasi pevhu kana kuti denderedzwa resimbi rinosanganiswa nemhepo inopisa, nekuwedzera kwekupisa mumudziyo kana tangi uye musanganiswa wechinhu chekubikisa, lignin nefiber zvinopatsanurwa. Mushure mekubika, uswa hwegorosi huchaburitswa kubva mumudziyo wekubikira kana tangi rekubikira kuenda kubhini remvura kana tangi remvura rakagadzirira kubvisa uswa, muchina unoshandiswa zvakanyanya imuchina wekuchenesa, muchina wekuwachisa we pulp unokurumidza kana bivis extruder, kusvika ipapo uswa hwegorosi huchabviswa zvizere, mushure mekugadzirisa nekuongorora, huchashandiswa kugadzira bepa. Kunze kwekugadzira bepa, uswa hwegorosi hunogonawo kushandiswa pakuumba tireyi yehuni kana kugadzira tireyi yezai.
Nguva yekutumira: Gunyana-30-2022