C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u Trung Qu\u1ed1c ph\u00e1t tri\u1ec3n m\u1ed9t h\u1ec7 th\u1ed1ng 17 th\u00e1p chi\u1ebft t\u00e1ch kim lo\u1ea1i rubidium v\u00e0 cesium \u0111\u1ed9 tinh khi\u1ebft cao t\u1eeb ch\u1ea5t th\u1ea3i trong qu\u00e1 tr\u00ecnh khai th\u00e1c lithium.<\/p>\n\n\n
Theo Global Times, Trung Qu\u1ed1c \u0111\u01b0a v\u00e0o v\u1eadn h\u00e0nh \u1ed5n \u0111\u1ecbnh d\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t \u0111\u1ea7u ti\u00ean tr\u00ean th\u1ebf gi\u1edbi s\u1eed d\u1ee5ng c\u00f4ng ngh\u1ec7 th\u00e1p chi\u1ebft t\u00e1ch li\u00ean t\u1ee5c \u0111\u1ec3 thu th\u1eadp rubidium v\u00e0 cesium t\u1eeb qu\u1eb7ng lithium \u1edf t\u1ec9nh Giang T\u00e2y, \u0111\u00e1nh d\u1ea5u b\u01b0\u1edbc \u0111\u1ed9t ph\u00e1 trong n\u1ed7 l\u1ef1c chi\u1ebft xu\u1ea5t v\u00e0 ph\u00e2n t\u00e1ch kim lo\u1ea1i hi\u1ebfm theo ph\u01b0\u01a1ng ph\u00e1p ti\u00ean ti\u1ebfn, h\u1ea1n ch\u1ebf t\u1ed1i \u0111a t\u00e1c \u0111\u1ed9ng ti\u00eau c\u1ef1c t\u1edbi m\u00f4i tr\u01b0\u1eddng. V\u1edbi c\u00f4ng su\u1ea5t 500 t\u1ea5n m\u1ed7i n\u0103m, h\u1ec7 th\u1ed1ng c\u00f3 th\u1ec3 s\u1ea3n xu\u1ea5t rubidium carbonate v\u00e0 cesium carbonate v\u1edbi \u0111\u1ed9 tinh khi\u1ebft tr\u00ean 99,9%. \u0110\u00e2y l\u00e0 d\u1ef1 \u00e1n h\u1ee3p t\u00e1c chung gi\u1eefa Vi\u1ec7n K\u1ef9 thu\u1eadt Quy tr\u00ecnh thu\u1ed9c Vi\u1ec7n H\u00e0n l\u00e2m Khoa h\u1ecdc Trung Qu\u1ed1c (CAS) v\u00e0 c\u00f4ng ty Ganfeng Lithium.<\/p>\n\n\n
Interesting Engineering cho bi\u1ebft rubidium v\u00e0 cesium l\u00e0 kim lo\u1ea1i hi\u1ebfm quan tr\u1ecdng \u0111\u00f3ng vai n\u1ec1n t\u1ea3ng cho ph\u1ea7n c\u1ee9ng cao c\u1ea5p nh\u01b0 \u0111\u1ed3ng h\u1ed3 nguy\u00ean t\u1eed, \u0111\u1ecbnh v\u1ecb h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5, nghi\u00ean c\u1ee9u y sinh, pin th\u1ec3 r\u1eafn v\u00e0 m\u1ea1ng m\u00e1y t\u00ednh l\u01b0\u1ee3ng t\u1eed. Hai lo\u1ea1i n\u00e0y hi\u1ebfm khi t\u1ed3n t\u1ea1i v\u1edbi s\u1ed1 l\u01b0\u1ee3ng l\u1edbn d\u01b0\u1edbi d\u1ea1ng kho\u00e1ng ch\u1ea5t \u0111\u1ed9c l\u1eadp trong v\u1ecf Tr\u00e1i \u0110\u1ea5t nh\u01b0ng th\u01b0\u1eddng c\u00f3 s\u1eb5n \u1edf n\u1ed3ng \u0111\u1ed9 th\u1ea5p b\u00ean trong qu\u1eb7ng lithium v\u00e0 n\u01b0\u1edbc h\u1ed3 mu\u1ed1i. Qu\u00e1 tr\u00ecnh thu th\u1eadp hai kim lo\u1ea1i g\u1eb7p tr\u1edf ng\u1ea1i do n\u1ed3ng \u0111\u1ed9 th\u1ea5p trong khi dung d\u1ecbch kho\u00e1ng ch\u1ee9a nhi\u1ec1u h\u1ee3p ch\u1ea5t kh\u00e1c. Ph\u01b0\u01a1ng ph\u00e1p t\u00e1ch truy\u1ec1n th\u1ed1ng th\u01b0\u1eddng \u0111\u00f2i h\u1ecfi l\u01b0\u1ee3ng l\u1edbn thi\u1ebft b\u1ecb v\u00e0 h\u00f3a ch\u1ea5t, khi\u1ebfn qu\u00e1 tr\u00ecnh tr\u1edf n\u00ean t\u1ed1n k\u00e9m v\u00e0 kh\u00f3 s\u1ea3n xu\u1ea5t s\u1ea3n ph\u1ea9m c\u00f3 \u0111\u1ed9 tinh khi\u1ebft cao.<\/p>\n\n\n
Theo SCMP, qu\u1eb7ng lepidolite ch\u1ee9a lithium \u1edf Giang T\u00e2y ch\u1ee9a g\u1ea7n 40% tr\u1eef l\u01b0\u1ee3ng rubidium c\u1ee7a Trung Qu\u1ed1c, nh\u01b0ng qu\u00e1 tr\u00ecnh nung sulphate \u1edf nhi\u1ec7t \u0111\u1ed9 cao theo ph\u01b0\u01a1ng ph\u00e1p truy\u1ec1n th\u1ed1ng n\u00f3ng t\u1edbi 800-1.000 \u0111\u1ed9 C, khi\u1ebfn l\u01b0\u1ee3ng l\u1edbn rubidium v\u00e0 caesium b\u1ecb gi\u1eef l\u1ea1i trong ch\u1ea5t th\u1ea3i aluminosilicate, cu\u1ed1i c\u00f9ng b\u1ecb lo\u1ea1i b\u1ecf c\u00f9ng v\u1edbi x\u1ec9 lithium. \u0110\u1ec3 gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1, nh\u00f3m nghi\u00ean c\u1ee9u ph\u00e1t tri\u1ec3n h\u1ec7 th\u1ed1ng chi\u1ebft t\u00e1ch d\u1ea1ng th\u00e1p. H\u1ec7 th\u1ed1ng c\u00f4ng nghi\u1ec7p ho\u00e0n ch\u1ec9nh bao g\u1ed3m 17 th\u00e1p chi\u1ebft t\u00e1ch, m\u1ed7i th\u00e1p m\u1edbi c\u00f3 n\u0103ng l\u1ef1c x\u1eed l\u00fd t\u01b0\u01a1ng \u0111\u01b0\u01a1ng 15 thi\u1ebft b\u1ecb truy\u1ec1n th\u1ed1ng, \u0111\u1ed3ng th\u1eddi gi\u1ea3m s\u1eed d\u1ee5ng 40% l\u01b0\u1ee3ng h\u00f3a ch\u1ea5t chi\u1ebft t\u00e1ch v\u00e0 h\u01a1n 1\/2 di\u1ec7n t\u00edch s\u00e0n c\u1ea7n d\u00f9ng.<\/p>\n\n\n
Sau khi thu th\u1eadp lithium t\u1eeb qu\u1eb7ng, dung d\u1ecbch kho\u00e1ng c\u00f2n l\u1ea1i \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o h\u1ec7 th\u1ed1ng \u0111\u1ec3 ph\u00e2n t\u00e1ch v\u00e0 tinh ch\u1ebf rubidium\/cesium th\u00f4ng qua nhi\u1ec1u giai \u0111o\u1ea1n. D\u1eef li\u1ec7u v\u1eadn h\u00e0nh t\u1eeb d\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t cho th\u1ea5y t\u1ef7 l\u1ec7 thu th\u1eadp cesium \u0111\u1ea1t tr\u00ean 98% v\u00e0 rubidium v\u01b0\u1ee3t qu\u00e1 95%. D\u00e2y chuy\u1ec1n c\u0169ng s\u1ea3n xu\u1ea5t \u1ed5n \u0111\u1ecbnh mu\u1ed1i rubidium v\u00e0 cesium \u0111\u1ed9 tinh khi\u1ebft cao \u1edf quy m\u00f4 c\u00f4ng nghi\u1ec7p.<\/p>\n\n\n
H\u1ec7 th\u1ed1ng th\u00e1p chi\u1ebft t\u00e1ch li\u00ean t\u1ee5c d\u00f9ng \u0111\u1ec3 s\u1ea3n xu\u1ea5t rubidium carbonate v\u00e0 cesium carbonate \u1edf t\u1ec9nh Giang T\u00e2y. \u1ea2nh: CAS<\/p>\n\n\n
Trung Qu\u1ed1c c\u00f3 tr\u1eef l\u01b0\u1ee3ng rubidium v\u00e0 cesium d\u1ed3i d\u00e0o \u1ea9n trong qu\u1eb7ng lithium v\u00e0 n\u01b0\u1edbc h\u1ed3 mu\u1ed1i. M\u1ed9t nghi\u00ean c\u1ee9u ch\u1ec9 ra tr\u1eef l\u01b0\u1ee3ng trong n\u01b0\u1edbc l\u00ean t\u1edbi 1,16 tri\u1ec7u t\u1ea5n rubidium oxide v\u00e0 140.000 t\u1ea5n cesium oxide. H\u1ec7 th\u1ed1ng khai th\u00e1c m\u1edbi c\u00f3 th\u1ec3 gi\u1ea3i quy\u1ebft \u0111i\u1ec3m y\u1ebfu l\u1edbn trong chu\u1ed7i cung \u1ee9ng n\u1ed9i \u0111\u1ecba. Trung Qu\u1ed1c thi\u1ebfu tr\u1eef l\u01b0\u1ee3ng pollucite (lo\u1ea1i kho\u00e1ng ch\u1ea5t c\u00f3 th\u1ec3 khai th\u00e1c tr\u1ef1c ti\u1ebfp \u0111\u1ec3 l\u1ea5y cesium) c\u00f3 gi\u00e1 tr\u1ecb th\u01b0\u01a1ng m\u1ea1i. B\u1eafc Kinh ch\u1ee7 y\u1ebfu nh\u1eadp kh\u1ea9u qu\u1eb7ng cesium th\u00f4 t\u1eeb Canada, Australia v\u00e0 Zimbabwe. Nh\u01b0ng hi\u1ec7n nay, Trung Qu\u1ed1c c\u00f3 th\u1ec3 \u0111\u1ea3m b\u1ea3o ho\u1ea1t \u0111\u1ed9ng cho ng\u00e0nh c\u00f4ng ngh\u1ec7 cao th\u00f4ng qua thu th\u1eadp c\u1ea3 hai kim lo\u1ea1i t\u1eeb ch\u1ea5t th\u1ea3i c\u00f4ng nghi\u1ec7p trong n\u01b0\u1edbc.<\/p>\n\n\n
V\u1edbi kh\u1ea3 n\u0103ng \u1ee9ng d\u1ee5ng v\u00e0o s\u1ea3n xu\u1ea5t nh\u1eefng kim lo\u1ea1i ch\u1ee7 ch\u1ed1t kh\u00e1c, c\u00f4ng ngh\u1ec7 tr\u00ean cho ph\u00e9p thu th\u1eadp th\u00eam nhi\u1ec1u t\u00e0i nguy\u00ean c\u00f3 gi\u00e1 tr\u1ecb h\u01a1n t\u1eeb c\u00f9ng m\u1ed9t qu\u1eb7ng, c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t s\u1eed d\u1ee5ng t\u1ed5ng th\u1ec3 m\u1ecf lithium.<\/p>\n\n