Kugwiritsa ntchito bwino migodi yagolide ndi mawu otchuka kwambiri m'migodi m'zaka zaposachedwa, ndipo kafukufuku wokhudza kugwiritsa ntchito bwino migodi yagolide wachitikanso. Zikumveka kuti kupanga migodi yagolide m'dziko langa kwafika matani opitilira 1.5 biliyoni, koma kuchuluka kwa kugwiritsidwa ntchito konsekonse ndi kochepera 20%. Pakadali pano, njira yabwino kwambiri yopezera kutaya migodi yagolide popanda zinyalala komanso kopanda vuto kumaphatikizapo njira ziwiri: kudzaza pansi pa nthaka ndi kugwiritsa ntchito chuma. Njira yachikhalidwe yodzazira migodi yagolide ndikudzaza migodi yagolide m'chitsime, pomwe migodi yagolide imaunjikana m'dziwe la migodi. Chifukwa chakuti golide wambiri nthawi zambiri umakhala wochepa, kuti mupeze golide wambiri, nthawi zambiri ndikofunikira kuchita ntchito zopera. Chifukwa chake, migodi yagolide imakhala ndi zambiri, pomwe migodi yagolide imakhala yochepa, ndipo migodi yagolide yokha ndi yomwe imadzazidwa pansi pa nthaka. , sizingatheke kuchepetsa zinyalala zolimba ndikuchepetsa mphamvu yosungira migodi ya migodi. Kusunga matope m'madamu kumafuna malo ambiri ndipo kumawononga chilengedwe. Kutaya matope a golide kwakhala chinthu chachikulu chomwe chikulepheretsa chitukuko cha zachuma chokhazikika cha migodi ya golide.
Pa February 10, 2022, Unduna wa Zamalonda ndi Ukadaulo wa Chidziwitso, National Development and Reform Commission, Unduna wa Sayansi ndi Ukadaulo, Unduna wa Zachuma, Unduna wa Zachilengedwe, Unduna wa Zachilengedwe ndi Chilengedwe, Unduna wa Zamalonda, ndi Boma la Unduna wa Misonkho adapereka mogwirizana lamulo lakuti "Pa Kusindikiza ndi Kugawa Mofulumira Kukweza Zogulitsa Zamakampani". "Chidziwitso pa Ndondomeko Yogwiritsira Ntchito Mokwanira" chikufuna kuti pofika chaka cha 2025, mphamvu yopanga zinyalala zolimba zamafakitale m'mafakitale ofunikira monga chitsulo ndi chitsulo, zitsulo zopanda chitsulo, ndi mafakitale a mankhwala m'dziko langa zichepe, kuchuluka kwa zinyalala zolimba zamafakitale zambiri kudzakwera kwambiri, makampani opanga zinthu zongowonjezwdwanso adzapitiliza kukula bwino, ndipo zinthu zamafakitale zidzagwiritsidwa ntchito mokwanira. Kugwira ntchito bwino kwawonjezeka kwambiri, ndipo kuchuluka kwa zinyalala zolimba zamafakitale zambiri kudzafika pa 57%. Chifukwa chake, kugwiritsa ntchito zinthu zagolide ndikofunikira kwambiri.
Sino-German Key Laboratory of Magnetoelectricity and Intelligent Mineral Processing of Huate Company imachita mayeso ambiri owonjezera phindu pa golide m'dera la Yantai. Zigawo zazikulu za golide m'magawo a golide ndi mchere wa gangue monga quartz, feldspar ndi calcite, ndi Iron wochepa, magnetic iron, iron oxide, titanium oxide, iron silicate, iron sulfide ndi zonyansa zina. Kukula kwa tinthu ta golide nthawi zambiri kumakhala 200 mesh 50-70%, kukula kwa tinthu ta golide kumakhala kofanana, ndipo kumakhala ndi matope ochepa. Kuchuluka kwakukulu kwa Fe2O3 ndi 1-3%, kuchuluka kwa TiO2 ndi 0.1-0.3%, kuchuluka kwa CaO ndi 0.12-1.0%, ndipo kuyera kwa golide ndi 5-20%. Pali kusiyana kwina pakupanga kwa tailings zopangidwa ndi ma concentrator osiyanasiyana. Ma tailings ena ali ndi SiO2 yambiri, kapena ali ndi spodumene, sericite, ndi zina zotero. Ambiri mwa iwo ndi a mtundu wa feldspar-quartz wa pegmatite, ndipo amagwiritsidwanso ntchito kwambiri.
Kampani ya Huate inapanga njira yophatikizana yopangira "kupatula maginito ndi mphamvu yokoka", ndipo inapeza chilolezo cha patent mu Seputembala 2020. Zomwe zili mu patentyi ndi za "njira yogwiritsira ntchito bwino golide wokhala ndi golide, chitsulo ndi feldspar. Pakadali pano, mafakitale akuluakulu opitilira khumi agwiritsidwa ntchito ku Yantai, Shandong, ndipo yayikulu mwa iyo imatha kukonza matani 8,000 a golide patsiku. Munjira iyi, zida zapamwamba zopangira monga kugwedezeka kwa chinsalu, chute yozungulira, tebulo logwedeza, cholekanitsa maginito cha drum, cholekanitsa maginito champhamvu cha maginito cha wet strong magnetic plate, cholekanitsa maginito cha vertical ring high gradient, ndi cholekanitsa maginito cha electromagnetic slurry zimagwiritsidwa ntchito pamodzi. Popeza feldspar concentrate yapamwamba kwambiri kuchokera ku tailings, zinthu zamtengo wapatali monga magnetite, mchere wokhala ndi golide, zinthu zopangira simenti, ndi zinthu zopangira njerwa zimapezedwanso kuti zigwiritsidwe ntchito mokwanira golide ndikukwaniritsa kutulutsa konse m'njira yonse.
Cholekanitsa maginito chozungulira chapamwamba kwambiri komanso cholekanitsa maginito chamagetsi chapamwamba kwambiri chimagwiritsidwa ntchito mu projekiti ya golide.
Nthawi yotumizira: Mar-11-2022