V\u00e0o th\u1eddi xa x\u01b0a, \u1edf Ai C\u1eadp c\u00f3 m\u1ed9t \u0111o\u00e0n l\u1eef h\u00e0nh \u0111\u00e3 d\u1eebng l\u1ea1i ngh\u1ec9 \u0111\u00eam \u1edf m\u1ed9t h\u1ebbm n\u00fai g\u1ea7n bi\u1ec3n. H\u1ecd \u0111\u1ed1t l\u1eeda, n\u1ea5u \u0103n, nh\u1ea3y m\u00faa. M\u1ea5y ng\u00e0y sau h\u1ecd chu\u1ea9n b\u1ecb r\u1eddi \u0111i n\u01a1i kh\u00e1c, v\u00e0 ph\u00e1t hi\u1ec7n trong \u0111\u00e1m tro c\u00f3 m\u1ed9t v\u1ea3y m\u00e0u tr\u1eafng s\u00e1ng l\u1ea5p l\u00e1nh. H\u1ecd l\u1ea5y l\u00e0m l\u1ea1 v\u00ec c\u00e1i “v\u1ea3y tr\u1eafng” \u0111\u00e3 t\u00ecm th\u1ea5y.<\/p>\n\n\n\n
\u0110\u00f3 l\u00e0 m\u1ed9t c\u00e2u “\u0111\u1ed1” m\u1ed9t c\u00e2u \u0111\u1ed1 m\u00e0 ph\u1ea3i qua h\u01a1n ng\u00e0n n\u0103m lo\u00e0i ng\u01b0\u1eddi m\u1edbi t\u00ecm th\u1ea5y l\u1eddi gi\u1ea3i. S\u1ef1 th\u1ef1c \u0111\u00f3 ch\u00ednh l\u00e0 c\u00e1c m\u1eabu thu\u1ef7 tinh m\u00e0 lo\u00e0i ng\u01b0\u1eddi ch\u1ebf t\u1ea1o \u0111\u01b0\u1ee3c s\u1edbm nh\u1ea5t.<\/p>\n\n\n\n
V\u00ec sao \u0111o\u00e0n l\u1eef h\u00e0nh c\u1ed5 Ai C\u1eadp n\u1ecd qua m\u1ea5y bu\u1ed5i \u0111\u1ed1t l\u1eeda n\u1ea5u c\u01a1m, s\u01b0\u1edfi \u1ea5m \u0111\u00e3 ch\u1ebf t\u1ea1o \u0111\u01b0\u1ee3c “thu\u1ef7 tinh”? Nguy\u00ean do l\u00e0 \u1edf \u0111\u00e2y c\u00f3 nhi\u1ec1u lo\u1ea1i c\u00e1t do \u0111\u00e1 n\u00fai b\u1ecb phong ho\u00e1 v\u00e0 c\u00e1t b\u00e3i bi\u1ec3n. B\u1ea3n th\u00e2n c\u00e1t d\u00f9 c\u00f3 m\u1ecbn nh\u01b0ng n\u1ebfu ch\u1ec9 b\u1ecb \u0111\u1ed1t n\u00f3ng th\u00ec c\u0169ng kh\u00f4ng n\u00f3ng ch\u1ea3y \u0111\u01b0\u1ee3c. Th\u1ebf nh\u01b0ng khi c\u1ee7i ch\u00e1y s\u1ebd t\u1ea1o n\u00ean tro than c\u00f3 natri cacbonat c\u00f3 t\u00ednh ki\u1ec1m, natri cacbonat l\u1ea1i t\u00e1c d\u1ee5ng v\u1edbi c\u00e1t m\u1ecbn. Do nhi\u1ec7t \u0111\u1ed9 cao khi \u0111\u1ed1t c\u1ee7i m\u00e0 natri cacbonat t\u00e1c d\u1ee5ng \u0111\u01b0\u1ee3c v\u1edbi c\u00e1t m\u1ecbn, c\u00e1t s\u1ebd n\u00f3ng ch\u1ea3y v\u00e0 sau khi \u0111\u1ec3 ngu\u1ed9i s\u1ebd k\u1ebft tinh t\u1ea1o n\u00ean c\u00e1c h\u1ea1t thu\u1ef7 tinh trong su\u1ed1t.<\/p>\n\n\n\n
C\u00e1c nh\u00e0 kh\u1ea3o c\u1ed5 \u0111\u00e3 khai qu\u1eadt th\u1ea5y \u1edf trong c\u00e1c ng\u00f4i m\u1ed9 c\u1ed5 Ai C\u1eadp c\u00e1c \u0111\u1ed3 trang s\u1ee9c ch\u1ebf t\u00e1c b\u1eb1ng thu\u1ef7 tinh th\u00e0nh c\u00e1c v\u00f2ng \u0111eo c\u1ed5 c\u1ee7a c\u00e1c c\u00f4 g\u00e1i.<\/p>\n\n\n\n
Ng\u00e0y nay nguy\u00ean li\u1ec7u ch\u1ee7 y\u1ebfu \u0111\u1ec3 ch\u1ebf t\u1ea1o thu\u1ef7 tinh l\u00e0 c\u00e1t th\u1ea1ch anh, \u0111\u00e1 v\u00f4i v\u00e0 tr\u00e0ng th\u1ea1ch (felspat). Trong \u0111\u00f3 th\u00e0nh ph\u1ea7n ch\u00ednh \u0111\u1ec3 ch\u1ebf t\u1ea1o thu\u1ef7 tinh l\u00e0 c\u00e1t th\u1ea1ch anh c\u00f3 th\u00e0nh ph\u1ea7n ho\u00e1 h\u1ecdc l\u00e0 silic \u0111ioxit.<\/p>\n\n\n\n
Thu\u1ef7 tinh ch\u1ebf t\u1ea1o t\u1eeb c\u00e1t th\u1ea1ch anh c\u00f3 ch\u1ea5t l\u01b0\u1ee3ng r\u1ea5t t\u1ed1t, trong su\u1ed1t, ch\u1ecbu \u0111\u1ef1ng \u0111\u01b0\u1ee3c axit, c\u00f3 t\u00ednh b\u1ec1n c\u01a1 h\u1ecdc cao. Khi ch\u1ebf t\u1ea1o th\u1ee7y tinh ng\u01b0\u1eddi ta \u0111em c\u00e1t th\u1ea1ch anh v\u00e0 \u0111\u00e1 v\u00f4i nghi\u1ec1n m\u1ecbn th\u00e0nh kh\u1ed1i \u0111\u1ed3ng \u0111\u1ec1u. Cho v\u00e0o l\u00f2, gia nhi\u1ec7t \u0111\u1ec3 h\u1ed7n h\u1ee3p \u0111\u01b0\u1ee3c nung ch\u1ea3y. Nh\u01b0ng c\u00e1t th\u1ea1ch anh c\u00f3 nhi\u1ec7t \u0111\u1ed9 n\u00f3ng ch\u1ea3y r\u1ea5t cao \u0111\u1ebfn h\u01a1n 2000\u00b0C, n\u00ean qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t th\u1ee7y tinh \u0111\u00e3 g\u1eb7p kh\u00f4ng \u00edt kh\u00f3 kh\u0103n. V\u00ec v\u1eady trong khi s\u1ea3n xu\u1ea5t th\u1ee7y tinh ng\u01b0\u1eddi ta ph\u1ea3i d\u00f9ng natri cacbonat l\u00e0m ph\u1ed1i li\u1ec7u \u0111\u1ec3 h\u1ed7n h\u1ee3p d\u1ec5 d\u00e0ng ch\u1ea3y l\u1ecfng h\u01a1n. Vi\u1ec7c th\u00eam natri cacbonat kh\u00f4ng ch\u1ec9 nh\u1eb1m gi\u1ea3m th\u1ea5p nhi\u1ec7t \u0111\u1ed9 n\u00f3ng ch\u1ea3y c\u1ee7a h\u1ed7n h\u1ee3p m\u00e0 c\u00f2n l\u00e0m gi\u1ea3m b\u1edbt \u0111\u1ed9 keo d\u00ednh c\u1ee7a kh\u1ed1i ch\u1ea3y, l\u00e0m cho kh\u1ed1i ch\u1ea3y s\u1ebd linh \u0111\u1ed9ng h\u01a1n trong l\u00f2 n\u1ea5u thu\u1ef7 tinh.<\/p>\n\n\n\n
\u0110\u1ec3 tho\u1ea3 m\u00e3n c\u00e1c nhu c\u1ea7u trong cu\u1ed9c s\u1ed1ng, c\u00e1c x\u01b0\u1edfng s\u1ea3n xu\u1ea5t th\u1ee7y tinh s\u1ea3n xu\u1ea5t ra nhi\u1ec1u lo\u1ea1i ch\u1ebf ph\u1ea9m thu\u1ef7 tinh nh\u01b0 k\u00ednh, thu\u1ef7 tinh kh\u00f4ng v\u1ee1, k\u00ednh nhi\u1ec1u l\u1edbp, k\u00ednh m\u1edd, k\u00ednh cong, th\u1ee7y tinh quang h\u1ecdc, c\u00e1c lo\u1ea1i b\u00ecnh \u0111\u1ef1ng\u2026 Trong nh\u1eefng n\u0103m g\u1ea7n \u0111\u00e2y \u0111\u00e3 xu\u1ea5t hi\u1ec7n nhi\u1ec1u ch\u1ebf ph\u1ea9m \u0111\u01b0\u1ee3c ch\u1ebf t\u1ea1o b\u1eb1ng th\u1ee7y tinh nh\u01b0: s\u1ee3i thu\u1ef7 tinh, thu\u1ef7 tinh th\u00e9p c\u00f9ng nhi\u1ec1u lo\u1ea1i ch\u1ebf ph\u1ea9m m\u1edbi kh\u00e1c.<\/p>\n\n\n\n
T\u1eeb kho\u00e1: Thu\u1ef7 tinh; Th\u1ea1ch anh.<\/p>\n\n\n\n
<\/p>\n\n\n\n\n\n\n","protected":false},"excerpt":{"rendered":"
V\u00e0o th\u1eddi xa x\u01b0a, \u1edf Ai C\u1eadp c\u00f3 m\u1ed9t \u0111o\u00e0n l\u1eef h\u00e0nh \u0111\u00e3 d\u1eebng l\u1ea1i ngh\u1ec9 \u0111\u00eam \u1edf m\u1ed9t h\u1ebbm n\u00fai g\u1ea7n bi\u1ec3n. H\u1ecd \u0111\u1ed1t l\u1eeda, n\u1ea5u \u0103n, nh\u1ea3y m\u00faa. M\u1ea5y ng\u00e0y sau h\u1ecd chu\u1ea9n b\u1ecb r\u1eddi \u0111i n\u01a1i kh\u00e1c, v\u00e0 ph\u00e1t hi\u1ec7n trong \u0111\u00e1m tro c\u00f3 m\u1ed9t v\u1ea3y m\u00e0u tr\u1eafng s\u00e1ng l\u1ea5p l\u00e1nh. H\u1ecd […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_disable_autopaging":false},"categories":[8,15],"tags":[],"class_list":["post-7827","post","type-post","status-publish","format-standard","hentry","category-hoa-hoc","category-hoi-dap-khoa-hoc"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/7827","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/comments?post=7827"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/7827\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=7827"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=7827"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=7827"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}