Kugwiritsiridwa ntchito kokwanira kwa michira ndi mawu otentha kwambiri pankhani ya migodi m'zaka zaposachedwa, ndipo kafukufuku wokhudza kagwiritsidwe ntchito kake ka michira ya golide wachitikanso. Zikumveka kuti kupanga michira ya migodi ya golidi m'dziko langa kwafikira matani oposa 1.5 biliyoni, koma kuchuluka kwa magwiritsidwe ntchito ndi osachepera 20%. Mchira wa migodi umaphatikizapo njira ziwiri: kudzaza mobisa ndi kugwiritsa ntchito zitsulo.Njira yodzaza migodi ya golidi ndiyo kudzaza michira yanjere m'chitsime, pamene michira yabwino imawunjika mu dziwe la tailings. ore nthawi zambiri amakhala otsika, kuti achulukitse kupeza kwa golide, nthawi zambiri pamafunika kuchita ntchito zopera. Choncho, michira yabwino imakhala ndi zambiri, pamene tailings coarse-grained ndi yochepa, ndipo tailings coarse-grained yokha imadzazidwa pansi. , n'kosatheka kuchepetsa zinyalala zolimba ndikuchepetsa mphamvu yosungiramo maiwe a tailings. Kusunga maiwe a tailings kumafunabe malo ambiri ndipo kumawononga chilengedwe. Kutayidwa kwa michira ya golide kwakhala chinthu chachikulu chomwe chikulepheretsa chitukuko cha zachuma cha migodi ya golide.
Pa February 10, 2022, Unduna wa Zamakampani ndi Upangiri Waukadaulo, National Development and Reform Commission, Unduna wa Sayansi ndi Ukadaulo, Unduna wa Zachuma, Unduna wa Zachilengedwe, Unduna wa Zachilengedwe ndi Zachilengedwe, Unduna wa Zamalonda. , ndi Boma la State Administration of Taxation pamodzi linapereka “Pa Kusindikiza ndi Kugawira Kupititsa patsogolo Kukwezeleza kwa Zida Zamakampani”. "Chidziwitso pa Kukhazikitsa Mapulani a Ntchito Yonse" imafuna kuti pofika chaka cha 2025, kukula kwa zinyalala zamafakitale m'mafakitale ofunika kwambiri monga chitsulo ndi chitsulo, zitsulo zosakhala ndi chitsulo, ndi mafakitale amankhwala m'dziko langa kuchepe. zinyalala zambiri zolimba za mafakitale zidzatukuka kwambiri, makampani opanga zinthu zongowonjezwdwa adzapitilira kukhala athanzi, ndipo chuma cha mafakitale chidzagwiritsidwa ntchito mokwanira. Kugwira ntchito bwino kwachitika bwino kwambiri, ndipo kuchuluka kwa zinyalala zolimba za m'mafakitale kudzafika pa 57%.
Sino-German Key Laboratory of Magnetoelectricity and Intelligent Mineral Processing of Huate Company imachita zoyeserera zambiri zopezera ma tailings a golide kudera la Yantai. The waukulu mchere zigawo zikuluzikulu za tailings golide ndi gangue mchere monga quartz, feldspar ndi calcite, ndi pang'ono makina Iron, maginito chitsulo, okusayidi chitsulo, titaniyamu okusayidi, chitsulo silicate, chitsulo sulfide ndi zosafunika zina.The tinthu kukula osiyanasiyana. golide michira zambiri 200 mauna 50-70%, tinthu kukula ndi yunifolomu, ndipo lili pang'ono matope abwino. Choyipa chachikulu cha Fe2O3 ndi 1-3%, TiO2 ndi 0.1-0.3%, CaO ndi 0.12-1.0%, ndipo kuyera kwa michira yagolide ndi 5-20%. Pali kusiyana kwina mu kapangidwe ka michira yopangidwa ndi ma concentrator osiyanasiyana. Michira ina imakhala ndi zinthu zambiri za SiO2, kapena zili ndi spodumene, sericite, etc. Ambiri a iwo ndi a feldspar-quartz mtundu wa pegmatite, wokhala ndi mtengo wogwiritsanso ntchito kwambiri.
Huate Company inapanga "magnetic separation-gravity separation" kuphatikiza kupindula, ndipo inalandira chilolezo cha patent mu September 2020. Zomwe zili patent ndi za "njira yogwiritsira ntchito golide, chitsulo ndi feldspar. ntchito khumi zazikulu zamakampani zachitika ku Yantai, Shandong, yayikulu yomwe imatha kukonza matani 8,000 a matani agolide patsiku. , chonyowa champhamvu maginito mbale maginito olekanitsa, ofukula mphete mkulu gradient maginito olekanitsa, ndi electromagnetic slurry maginito olekanitsa ntchito pamodzi. Ngakhale kupeza feldspar yokhazikika kuchokera ku michira, zinthu zamtengo wapatali monga magnetite, mchere wonyamula golide, zopangira simenti, ndi zopangira njerwa zimapezedwanso kuti zizindikire kugwiritsiridwa ntchito kwathunthu kwa michira ya golide ndikutulutsa ziro zonse. - njira yozungulira.
Cholekanitsa champhete chowoneka bwino cha maginito olekanitsa ndi ma elekitirodi slurry high gradient maginito olekanitsa amagwiritsidwa ntchito mu projekiti ya golide.
Nthawi yotumiza: Mar-11-2022