Tondo wosakanikirana ndi madzi amatanthauza zinthu za simenti, zophatikizika bwino, zosakaniza, madzi ndi zinthu zosiyanasiyana zomwe zimatsimikiziridwa malinga ndi magwiridwe antchito. Malingana ndi gawo lina, pambuyo poyesedwa ndi kusakaniza mu siteshoni yosakaniza, imatengedwa kupita kumalo ogwiritsidwa ntchito ndi galimoto yosakaniza. Sungani kusakaniza kwamatope mu chidebe chapadera ndikuchigwiritsa ntchito mkati mwa nthawi yodziwika. Mfundo yogwiritsira ntchito matope osakanikirana ndi madzi ndi ofanana ndi konkire yamalonda, ndipo malo osakaniza konkire amalonda amatha kupanga matope osakaniza nthawi imodzi.
1. Ubwino wa matope osakaniza ndi madzi
1) Mtondo wosakanizidwa ndi madzi ukhoza kugwiritsidwa ntchito mwachindunji pambuyo potumizidwa kumalo popanda kukonzedwa, koma matope ayenera kusungidwa mu chidebe chopanda mpweya;
2) Mtondo wosakanizika wonyowa umakonzedwa mufakitale yaukadaulo, yomwe imathandizira kuonetsetsa ndikuwongolera matope;
3) Kusankhidwa kwa zinthu zopangira matope osakanikirana ndi madzi ndi kwakukulu. Zophatikizazo zimatha kukhala zouma kapena zonyowa, ndipo siziyenera kuuma, kotero kuti mtengowo ukhoza kuchepetsedwa. Komanso, kuchuluka kwa yokumba makina mchenga opangidwa ndi mafakitale zinyalala slag monga ntchentche phulusa ndi mafakitale olimba zinyalala monga zitsulo slag ndi tailings mafakitale akhoza kusakaniza, amene osati kupulumutsa chuma, komanso kuchepetsa mtengo wa matope.
4) Malo omangapo amakhala ndi malo abwino komanso ocheperako.
2. Kuipa kwa matope osakaniza ndi madzi
1) Popeza matope osakanizidwa ndi madzi amasakanizidwa ndi madzi mufakitale yopanga akatswiri, ndipo kuchuluka kwamayendedwe kumakhala kokulirapo nthawi imodzi, sikungawongoleredwe mosinthika malinga ndi momwe ntchito ikugwirira ntchito. Kuonjezera apo, matope osakanikirana ndi madzi amafunika kusungidwa mu chidebe chopanda mpweya atatumizidwa kumalo omanga, kotero kuti dziwe la phulusa liyenera kukhazikitsidwa pamalopo;
2) Nthawi yoyendera imaletsedwa ndi mikhalidwe yamagalimoto;
3) Popeza matope osakanikirana ndi madzi amasungidwa pamalo omanga kwa nthawi yayitali, pali zofunikira zina zogwirira ntchito, kuika nthawi ndi kukhazikika kwa ntchito yogwira ntchito ya matope.
Hydroxypropyl methylcellulose imagwiritsidwa ntchito ngati chosungira madzi komanso chobwezeretsanso matope a simenti kuti matopewo azipopa. Imagwiritsidwa ntchito ngati chomangira popaka pulasitala, imathandizira kufalikira ndikutalikitsa nthawi yogwira ntchito. Kusunga madzi kwa hydroxypropyl methylcellulose HPMC kumalepheretsa slurry kuti zisaphwanyike chifukwa chowuma mwachangu mukatha kugwiritsa ntchito, ndikuwonjezera mphamvu pambuyo poumitsa. Kusunga madzi ndi ntchito yofunika kwambiri ya hydroxypropyl methylcellulose HPMC, komanso ndikuchita komwe ambiri opanga matope ophatikizika apanyumba amalabadira. Zomwe zimakhudza momwe madzi amasungiramo matope osakanikirana ndi madzi amaphatikizapo kuchuluka kwa HPMC yowonjezeredwa, kukhuthala kwa HPMC, ubwino wa tinthu tating'onoting'ono, komanso kutentha kwa malo ogwiritsira ntchito.
Pambuyo matope osakanizidwa ndi madzi atumizidwa ku malowa, ayenera kusungidwa mu chidebe chopanda mpweya chopanda mpweya. Ngati musankha chidebe chachitsulo, zotsatira zosungirako ndizo zabwino kwambiri, koma ndalamazo ndizokwera kwambiri, zomwe sizikugwirizana ndi kutchuka ndi kugwiritsa ntchito; mutha kugwiritsa ntchito njerwa kapena midadada kuti mumange phulusa, ndiyeno mugwiritseni ntchito matope osalowa madzi (mayamwidwe amadzi osakwana 5%) popaka pamwamba, ndipo ndalamazo ndizotsika kwambiri. Komabe, pulasitala ya matope osalowa madzi ndi kofunika kwambiri, komanso kuti pulasitalayo isalowe m'madzi iyenera kutsimikiziridwa. Ndi bwino kuwonjezera zinthu za hydroxypropyl methylcellulose HPMC mumatope kuti muchepetse ming'alu yamatope. Pansi padziwe la phulusa payenera kukhala ndi malo otsetsereka kuti ayeretse mosavuta. Dziwe la phulusa liyenera kukhala ndi denga lokwanira kuteteza ku mvula ndi dzuwa. Mtondo umasungidwa mu dziwe la phulusa, ndipo pamwamba pa dziwe la phulusa liyenera kuphimbidwa kwathunthu ndi nsalu zapulasitiki kuti zitsimikizire kuti matope ali otsekedwa.
Udindo wofunikira wa hydroxypropyl methylcellulose HPMC mumtondo wonyowa wothira makamaka uli ndi mbali zitatu, imodzi ndi yabwino kwambiri yosungira madzi, inayo imakhudza kusasinthasintha ndi thixotropy wa matope osakaniza, ndipo chachitatu ndi kugwirizana ndi simenti. Mphamvu yosungira madzi ya cellulose ether imadalira kuyamwa kwamadzi kwa gawo loyambira, kapangidwe ka matope, makulidwe a matope, kuchuluka kwa madzi kwa matope, komanso nthawi yoyika zinthu. Kuwoneka bwino kwa hydroxypropyl methylcellulose kumapangitsa kuti madzi asungidwe bwino.
Zomwe zimakhudza kusungidwa kwamadzi kwa matope osakaniza onyowa ndi ma cellulose ether viscosity, kuchuluka kowonjezera, kununkhira kwa tinthu ndi kutentha kwa ntchito. Kuchuluka kwa kukhuthala kwa cellulose ether, kumapangitsa kuti madzi asungidwe bwino. Viscosity ndi gawo lofunikira la magwiridwe antchito a HPMC. Kwa mankhwala omwewo, zotsatira za viscosity zoyezedwa ndi njira zosiyanasiyana ndizosiyana kwambiri, ndipo zina zimakhala zosiyana kawiri. Chifukwa chake, poyerekeza kukhuthala, kuyenera kuchitika pakati pa njira zoyesera zomwezo, kuphatikiza kutentha, rotor, ndi zina.
Nthawi zambiri, kukwezeka kwa mamachulukidwe kumapangitsa kuti madzi asungidwe bwino. Komabe, kukwezeka kwa mamasukidwe apamwamba komanso kulemera kwa mamolekyu a HPMC, kutsika kofananirako kusungunuka kwake kudzakhala ndi zotsatira zoyipa pamphamvu ndi ntchito yomanga ya matope. The apamwamba mamasukidwe akayendedwe, ndi zoonekeratu kwambiri thickening zotsatira pa matope, koma si mwachindunji molingana. Kukwera kwa mamasukidwe akayendedwe, m'pamenenso matope onyowa amakhala owoneka bwino kwambiri, ndiye kuti, pakumanga, amawonetsedwa ngati kumamatira ku scraper ndi kumamatira kwakukulu ku gawo lapansi. Koma sizothandiza kuwonjezera mphamvu zamapangidwe a dothi lonyowa palokha. Pakumanga, ntchito yotsutsa-sag sizowonekera. M'malo mwake, hydroxypropyl methylcellulose yosinthidwa yokhala ndi mamasukidwe apakatikati ndi otsika imakhala ndi ntchito yabwino kwambiri pakuwongolera mphamvu zamapangidwe amatope onyowa.
Mumatope osakanikirana ndi madzi, kuchuluka kwa cellulose ether HPMC kumakhala kochepa kwambiri, koma kumatha kusintha kwambiri ntchito yomanga matope osakanikirana, ndipo ndi chowonjezera chachikulu chomwe chimakhudza ntchito yomanga matope. Kusankhidwa koyenera kwa hydroxypropyl methylcellulose kumakhudza kwambiri kusintha kwa kachitidwe ka matope osakanikirana ndi madzi.
Nthawi yotumiza: Apr-04-2023