Calcium lignosulfonate zochepetsera madzi amachotsedwa muzamadzi zinyalala zamadzimadzi. Mankhwalawa amagawidwa m'magulu awiri, mchere wa calcium ndi mchere wa sodiummankhwala lignosulfonate, yotsirizirayi inapezedwa kuchokera ku processing ya zakale. Popanga rayon kapena m'makampani opanga mapepala, nkhuni zikaphikidwa pa kutentha kwambiri komanso kuthamanga kwambiri, sulfite imawonjezeredwa kuti ilekanitse mapadi ndi osakhala fiber mu nkhuni, ndipo cellulose yomwe yapezeka ndi rayon, yopangira. ubweya, pepala, etc. The sanali cellulose kusungunuka mu njira ankalamulidwa ndimankhwala lignosulfonates ndi shuga pang'ono.
Njira imeneyi imatchedwa zamkati zinyalala. Mowa ndi yisiti zikachotsedwa mumadzi otayira, zinthu zotsalazo zimaumitsidwa ndi mpweya wotentha kuti zipange ufa wofiirira, womwe ndicalcium lignosulfonateufa. Zomwe zili mucalcium lignosulfonatepafupifupi 45-50%, kuchepetsa zinthu Zomwe zili ndi zosakwana 12%.
Pakali pano, kufunika msika kwacalcium lignosulphonenandipo zosinthidwa zake zikuchulukirachulukira pang'onopang'ono, kupangitsa kusanthula ndi kugwiritsa ntchito lignin ndikupeza phindu lofananira lazachuma kuchokera pamenepo pang'onopang'ono kukhala zenizeni. Choncho, m'tsogolomu, tidzalimbitsa kafukufuku ndi chitukuko cha njira zatsopano, matekinoloje atsopano ndi njira zatsopano pakusintha kwatsopano.calcium lignosulphonenakukulitsa malonda a lignin omwe ali ndi msika waukulu wofunikira, magwiridwe antchito abwino komanso phindu lazachuma, ndikufulumizitsa kugwiritsa ntchito kwakukulu kwa lignin. Idzalimbikitsa kugwiritsidwa ntchito kwathunthu kwa zinthu zachilengedwe zongowonjezwdwa komanso kuyang'anira zamkati ndi zinyalala zamadzimadzi zoyeretsera ndikutulutsa.
Lignosulfonatewochepetsera madzi wakhala akugwiritsidwa ntchito m'dziko langa kwa zaka 40-50. Komabe, chifukwa cha kuchepa kwa madzi otsika, kukhazikika kwapang'onopang'ono, kuwonjezeka pang'ono kwa mphamvu yopondereza ya konkire, ndi mphamvu zochepa zoyambirira, ntchito yake mu konkire imakhala yochepa. Zimakhudzanso kusintha kwa mtengo wake. Pakadali pano, calcium lignosulfonatemadzi kuchepetsa wothandizira akadali makamaka ntchito yomanga konkire chilimwe ngati retarder konkire. Dziko lapansi likhoza kupanga matani 30 miliyoni a lignin zamakampani chaka chilichonse. Pakadali pano, pafupifupi 6% yokha ya lignin yamafakitale m'dziko langa ndiyomwe imagwiritsidwa ntchito, ndipo ena ambiri amatayidwa mumitsinje ngati zinyalala. Kuwononga kwambiri chilengedwe.
Kuyambitsa ndi kusinthacalcium lignosulfonatendikuphatikiza ndi superplasticizer yochokera ku naphthalene kumatha kupanga njira yabwino kwambiri yochepetsera madzi, ndikugonjetsa zofooka zacalcium lignosulfonate kuchedwa ndi kutsika mphamvu oyambirira, ndi kuchepetsa kwambiri naphthalene zochokera superplasticizer. mtengo ndi kukulitsa kuchuluka kwa kagwiritsidwe ntchito ka matabwa a calcium.
Nthawi yotumiza: Feb-07-2022
