ʻO ka hoʻohana piha ʻana i nā tailings he huaʻōlelo wela ia ma ke kahua mining i nā makahiki i hala iho nei, a ua hana ʻia hoʻi ka noiʻi ʻana i ka hoʻohana piha ʻana i nā tailings gula. Ua maopopo ua hiki aku ka hana ʻana o nā tailings mine gula ma koʻu ʻāina ma mua o 1.5 biliona tons, akā ʻo ka nui o ka hoʻohana piha ʻana he emi ma mua o 20%. I kēia manawa, ʻo ke ala kūpono loa e hoʻokō ai i ka hoʻolei ʻana i nā tailings mine gula me ka ʻole o ka ʻōpala a me ka ʻino ʻole e pili ana i ʻelua mau ala: ka hoʻopiha ʻana ma lalo o ka honua a me ka hoʻohana ʻana i nā kumuwaiwai. ʻO ke kaʻina hana hoʻopiha kuʻuna o nā mines gula, ʻo ia ka hoʻopiha ʻana i nā tailings ʻōpala nui i loko o ka luawai, ʻoiai ua hoʻopili ʻia nā tailings maikaʻi i loko o ka loko tailings. No ka mea, he haʻahaʻa ka nui o ka ore gula, i mea e hoʻonui ai i ka loaʻa ʻana o nā kumuwaiwai gula, pono pinepine e hana i nā hana wili. No laila, he nui ka nui o nā tailings maikaʻi, ʻoiai he emi ka nui o nā tailings ʻōpala, a ʻo nā tailings ʻōpala wale nō i hoʻopiha ʻia ma lalo o ka honua. , ʻaʻole hiki ke hoʻemi nui i ka ʻōpala paʻa a hoʻemi i ka hiki ke mālama i nā loko tailings. ʻO ka mālama ʻana i nā loko wai hoʻoheheʻe e pono ai ka nui o ka ʻāina a hōʻino i ke kaiapuni. Ua lilo ka hoʻolei ʻana i nā ʻōpala gula i mea nui e kāohi ana i ka hoʻomohala waiwai hoʻomau o nā lua gula.
Ma Pepeluali 10, 2022, ua hoʻopuka pū ke Kuhina o ka ʻOihana a me ka ʻIke ʻIke, ke Komisina Hoʻomohala a me ka Hoʻoponopono Lahui, ke Kuhina o ka ʻEpekema a me ka ʻenehana, ke Kuhina Waiwai, ke Kuhina o nā Kumuwaiwai Kūlohelohe, ke Kuhina o ka Ecology a me ke Kaiapuni, ke Kuhina o ke Kālepa, a me ka ʻOihana Hoʻokele ʻAuhau o ka Mokuʻāina i ka "On Printing and Distributing Accelerating the Promotion of Industrial Resources". ʻO ka "Notice on the Implementation Plan for Comprehensive Utilization" e koi ana i ka makahiki 2025, e emi ana ka ikaika o ka hana ʻana i nā ʻōpala paʻa ʻoihana ma nā ʻoihana koʻikoʻi e like me ka hao a me ke kila, nā metala ʻole-ferrous, a me nā ʻoihana kemika ma koʻu ʻāina, e hoʻomaikaʻi nui ʻia ka pae hoʻohana piha o nā ʻōpala paʻa ʻoihana nui, e hoʻomau ka ʻoihana kumuwaiwai hou i ka ulu olakino, a e hoʻohana piha ʻia nā kumuwaiwai ʻoihana. Ua hoʻomaikaʻi nui ʻia ka pono, a e hiki aku ka nui o ka hoʻohana piha ʻana o nā ʻōpala paʻa ʻoihana nui i 57%. No laila, he mea nui ka hoʻohana ʻana i nā kumuwaiwai o nā ʻōpala gula.
ʻO ka Sino-German Key Laboratory of Magnetoelectricity and Intelligent Mineral Processing o Huate Company e hana ana i kahi nui o nā hoʻokolohua hoʻomaikaʻi ma nā ʻōpala gula ma ka ʻāina ʻo Yantai. ʻO nā ʻāpana mineral nui o nā ʻōpala gula he mau mineral gangue e like me ka quartz, feldspar a me ka calcite, a me kahi liʻiliʻi o ka hao mechanical, ka hao magnetic, ka hao oxide, ka titanium oxide, ka hao silicate, ka hao sulfide a me nā mea haumia ʻē aʻe. ʻO ka laulā nui o nā ʻāpana o nā ʻōpala gula he 200 mesh 50-70%, ʻano like ka nui o ka ʻāpana, a he liʻiliʻi ka lepo maikaʻi. ʻO ka nui o ka haumia nui ʻo Fe2O3 he 1-3%, ʻo TiO2 he 0.1-0.3%, ʻo CaO he 0.12-1.0%, a ʻo ke keʻokeʻo o nā ʻōpala gula he 5-20%. Aia kekahi mau ʻokoʻa i ka haku mele ʻana o nā ʻōpala i hana ʻia e nā mea hoʻohuihui like ʻole. Loaʻa i kekahi mau tailings ke kiʻekiʻe o ka SiO2, a i ʻole he spodumene, sericite, a pēlā aku. ʻO ka hapa nui o lākou no ke ʻano feldspar-quartz pegmatite, me ka waiwai hoʻohana hou kiʻekiʻe.
Ua hana ʻo Huate Company i ke kaʻina hana hoʻomaikaʻi hui pū ʻia o ka "magnetic separation-gravity separation", a ua loaʻa iā ia ka ʻae palapala hoʻopaʻa inoa i Kepakemapa 2020. ʻO ka ʻike palapala hoʻopaʻa inoa e pili ana i "kahi ʻano hoʻohana piha o nā tailings gula i loaʻa ke gula, ka hao a me ka feldspar. I kēia manawa, ua hoʻokō ʻia ma mua o ʻumi mau noi ʻoihana nui ma Yantai, Shandong, ʻo ka mea nui loa e hiki ke hana i 8,000 tons o nā tailings gula i kēlā me kēia lā. Ma kēia kaʻina hana, hoʻohana ʻia nā lako hoʻomaikaʻi holomua e like me ka pale haʻalulu, ka chute spiral, ka papa haʻalulu, ka mea hoʻokaʻawale magnetic drum, ka mea hoʻokaʻawale magnetic plate magnetic ikaika pulu, ka mea hoʻokaʻawale magnetic gradient kiʻekiʻe apo vertical, a me ka mea hoʻokaʻawale magnetic slurry electromagnetic. ʻOiai e loaʻa ana ka feldspar concentrate kiʻekiʻe mai nā tailings, ua hoʻihoʻi ʻia nā huahana waiwai e like me ka magnetite, nā mineral e hali ana i ke gula, nā mea maka sima, a me nā mea maka hana brick e hoʻomaopopo i ka hoʻohana piha ʻana o nā tailings gula a hoʻokō i ka hoʻokuʻu ʻole ma ke ʻano holoʻokoʻa.
Hoʻohana ʻia ka mea hoʻokaʻawale magnetic gradient kiʻekiʻe o ke apo Vertical a me ka mea hoʻokaʻawale magnetic gradient kiʻekiʻe slurry electromagnetic i ka papahana tailings gula
Ka manawa hoʻouna: Malaki-11-2022