Mgbe ihe karịrị afọ 40 nke mgbalị gasịrị, karịsịa mmepe ngwa ngwa kemgbe 1978, nke Chinaobere ụwaụlọ ọrụ enweela ọganihu qualitative na ọkwa mmepụta na àgwà ngwaahịa, na-eme usoro mmepụta ihe zuru oke. Ugbu a,obere ụwannụcha na China
The ore agbaze na nkewa ikike ruru n'elu 130000 tọn kwa afọ (REO), na kwa afọ mmepụta nke obere ụwa erute n'elu 70000 tọn, aza maka ihe karịrị 80% nke ụwa ngụkọta mmepụta. Mmepụta ya na oke mbupụ ya bụ nke kacha ukwuu n'ụwa.
E nwere ihe karịrị otu narị na iri asaaobere ụwaụlọ ọrụ na-agbaze na nkewa na China, mana naanị 5 nwere ikike nhazi kwa afọ karịa tọn 5000 (REO), yana ọtụtụ ụlọ ọrụ nwere ikike nhazi nke 1000-2000 tọn.
Ka ọ dị ugbu a, China ewepụtala ntọala nrụpụta atọ kachasị gburugburu isi atọobere ụwaakụrụngwa:
(1) Ebe ugwuobere ụwaemebela ntọala mmepụta ya na ngwakọta Baotouobere ụwaore dị ka akụrụngwa, ya na BaotouỤwa dị ụkọHigh Tech na Gansu Rare Earth Company dị ka ọkpụkpụ azụ. Enwere ihe karịrị ụlọ ọrụ 80 na-emepụta iheobere ụwachemicals dị kaobere chloride ụwana carbonate kwa afọ
Ihe karịrị tọn 60000 nke ogige na tọn 15000 nke otuobere ụwangwakọta. Ugbu a, ọtụtụobere ụwaỤlọ ọrụ na-edozi Baotou ore na-eji usoro mgbaze acid nke Beijing Nonferrous Metals Research Institute mepụtara, wee jiri P204 ma ọ bụ P507 mmịpụta s.nkewa, nkecerium dị ọchaa na-ewepụtakarị ya site na mmịpụta oxidation, na ọkwa fluorescenteuropium oxidea na-ewepụta ya site na mbelata mmịpụta. Ngwaahịa ndị bụ isi gụnyere otu ma ọ bụ ngwakọta ụwa dị ụkọ dị kalanthanum, cerium, praseodymium, neodymium, samarium, europium, wdg.
(2) The ọkara na arọobere ụwantọala mmepụta na-ewere ụdị ọla ndịda ionic dị ka akụrụngwa, ma na-ejikwa ihe fọrọ nke nta ka ọ bụrụ tọn 20000 nke ụdị ionic ndịda.obere ụwaore kwa afọ. Ụlọ ọrụ azụ azụ gụnyere Guanzhou the Pearl River Smelter, Jianyin JiahuaỤwa dị ụkọFactory, na Yixin Xinwei Rare Earth Co., Ltd Company, Liyan Luodiya Fangzheng Rare Earth Company, Guangdong Yanjiang Rare Earth Factory, wdg Southern ion ụdị obere ụwa mines n'ozuzu na-eji ammonium sulfate na situ leaching carbonate ọdịda mgbanye hydrochloric acid mgbasa P507 na naphthenic acid mmịpụta nkewa na ọcha.
Ọkara ruo arọ otuobere ụwa oxidesna ụfọdụ ogige bara ụba dị kayttrium, dysprosium, terbium, europium, lanthanum, neodymium, samarium, wdg.
(3) Iji Mianning fluorocarbon cerium ore na Sichuan dị ka akụrụngwa, emebela ntọala nrụpụta maka fluorocarbon cerium ore na Sichuan. Enwere ugbu a osisi hydrometallurgy 27 nwere ngụkọta kwa afọ nke tọn 15-2000. Usoro mgbaze nke fluoride ore naceriumore kacha gụnyere oxidation roasting vUsoro ọgwụgwọ kemịkalụ siri ike sitere na usoro bụ isi nke sulfuric acid leaching, yana ngwaahịa ndị ahụ bụ otu ogige ụwa ma ọ bụ agwakọta obere ihe mejupụtara.lanthanum, cerium, naneodymium. Ọtụtụ ụlọ ọrụ dị obere na ọnụ ọgụgụ, nwere obere akụrụngwa na ọkwa teknụzụ.Tebe a bụ ọtụtụ isi ngwaahịa naobere ụwangwaahịa na-agbaze, nke nwere ịdị ọcha dị elu yana ngwaahịa ngwakọta ụwa na-adịghị ahụkebe echere na ọ gaghị agafe 5%.
Oge nzipu: Nov-02-2023