T\u1eeb kh\u00f3a t\u00ecm ki\u1ebfm: H\u00e3y Tr\u1ea3 L\u1eddi Em T\u1ea1i Sao? \u2013 T\u1eadp 6 – Arkady Leokum<\/p>\n\n\n\n
Magn\u00e9 c\u00f3 nhi\u1ec1u c\u00f4ng d\u1ee5ng, l\u00e0 ch\u1ea5t m\u00e0 c\u00e1c kim lo\u1ea1i kh\u00e1c kh\u00f4ng th\u1ec3 thay th\u1ebf \u0111\u01b0\u1ee3c. Trong qu\u1ed1c ph\u00f2ng, v\u1eadt li\u1ec7u ch\u1ee7 y\u1ebfu ch\u1ebf t\u1ea1o m\u00e1y bay, t\u00e0u thuy\u1ec1n cao t\u1ed1c l\u00e0 h\u1ee3p kim nh\u00f4m – magn\u00e9, kim lo\u1ea1i magn\u00e9 \u1edf \u0111\u00e2y c\u00f3 t\u00e1c d\u1ee5ng quan tr\u1ecdng. Magn\u00e9 c\u00f2n nh\u1eb9 h\u01a1n c\u1ea3 nh\u00f4m. \u201cC\u1ea5y\u201d th\u00eam magn\u00e9 v\u00e0o nh\u00f4m s\u1ebd \u0111\u01b0\u1ee3c lo\u1ea1i v\u1eadt li\u1ec7u v\u1eeba nh\u1eb9 v\u1eeba ch\u1eafc \u0111\u1ec3 ch\u1ebf t\u1ea1o m\u00e1y bay, thuy\u1ec1n m\u00e1y cao t\u1ed1c.<\/p>\n\n\n\n
H\u1ee3p kim nh\u00f4m – magn\u00e9 l\u00e0 v\u1eadt li\u1ec7u ch\u1ebf t\u1ea1o \u00f4t\u00f4, t\u00e0u thuy\u1ec1n v\u00e0 c\u00e1c lo\u1ea1i m\u00e1y m\u00f3c thi\u1ebft b\u1ecb kh\u00e1c. Ch\u00fang ta \u0111\u1ec1u bi\u1ebft r\u1ea5t r\u00f5 ph\u00e1o t\u00edn hi\u1ec7u, ph\u00e1o s\u00e1ng, bom ch\u00e1y (bom napan) \u0111\u1ec1u ph\u1ea3i d\u00f9ng kim lo\u1ea1i magn\u00e9. Ch\u1ee5p \u1ea3nh \u0111\u00e8m Flash l\u00e0 \u0111\u1ed1t ch\u00e1y kim lo\u1ea1i magn\u00e9 \u0111\u1ec3 ph\u00e1t \u00e1nh s\u00e1ng c\u1ef1c m\u1ea1nh l\u00e0m ngu\u1ed3n \u00e1nh s\u00e1ng. C\u00f4ng nghi\u1ec7p luy\u1ec7n kim c\u0169ng kh\u00f4ng t\u00e1ch r\u1eddi mang\u00e9.<\/p>\n\n\n\n
Kem \u0111\u00e1nh r\u0103ng ch\u00fang ta d\u00f9ng h\u1eb1ng ng\u00e0y c\u00f3 th\u00e0nh ph\u1ea7n ch\u00ednh l\u00e0 carbonat magn\u00e9 (MgCO3). M\u00f9a \u0111\u00f4ng, ng\u01b0\u1eddi ta ph\u1ee7 m\u1ed9t ch\u1ea5t nh\u1ef1a m\u00e0u tr\u1eafng t\u1ef1a v\u00f4i l\u00ean \u1ed1ng n\u01b0\u1edbc \u0111\u1ec3 nhi\u1ec7t \u0111\u1ed9 xu\u1ed1ng kho\u1ea3ng 100C, n\u01b0\u1edbc trong \u1ed1ng kh\u00f4ng b\u1ecb \u0111\u00f4ng \u0111\u1eb7c l\u00e0m v\u1ee1 \u1ed1ng, th\u1eadm ch\u00ed b\u00f4i l\u00ean c\u1ea3 \u1ed1ng cao su n\u1eefa, \u0111\u00f3 ch\u00ednh l\u00e0 c\u00f4ng d\u1ee5ng c\u1ee7a carbonat magn\u00e9. Carbonat magn\u00e9 l\u00e0 s\u1ea3n ph\u1ea9m trung gian trong qu\u00e1 tr\u00ecnh ch\u1ebf t\u1ea1o magn\u00e9.<\/p>\n\n\n\n
N\u1ed3ng \u0111\u1ed9 magn\u00e9 trong n\u01b0\u1edbc bi\u1ec3n chi\u1ebfm v\u1ecb tr\u00ed th\u1ee9 ba. Magn\u00e9 trong n\u01b0\u1edbc bi\u1ec3n \u1edf d\u01b0\u1edbi d\u1ea1ng MgCl2 v\u00e0 MgCO3. C\u00f4ng ngh\u1ec7 l\u1ea5y kim lo\u1ea1i magn\u00e9 t\u1eeb trong n\u01b0\u1edbc bi\u1ec3n v\u1edbi quy m\u00f4 l\u1edbn t\u01b0\u01a1ng \u0111\u1ed1i \u0111\u01a1n gi\u1ea3n.<\/p>\n\n\n\n
C\u00e1c qu\u1ed1c gia thi\u1ebfu m\u1ecf qu\u1eb7ng magn\u00e9 th\u00ec tr\u1ef1c ti\u1ebfp l\u1ea5y kim lo\u1ea1i magn\u00e9 t\u1eeb n\u01b0\u1edbc bi\u1ec3n. Ng\u00e0y nay, tr\u00ean th\u1ebf gi\u1edbi, ng\u01b0\u1eddi ta \u0111\u1ec1u l\u1ea5y kim lo\u1ea1i magn\u00e9 v\u00e0 h\u1ed7n h\u1ee3p c\u1ee7a n\u00f3 t\u1eeb n\u01b0\u1edbc bi\u1ec3n, cho n\u00ean n\u01b0\u1edbc bi\u1ec3n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 \u201cnh\u00e0\u201d c\u1ee7a magn\u00e9.<\/p>\n\n\n\n
S\u1ea3n l\u01b0\u1ee3ng magn\u00e9 h\u00e0ng n\u0103m tr\u00ean th\u1ebf gi\u1edbi l\u00e0 600 ng\u00e0n t\u1ea5n, ph\u1ea7n l\u1edbn l\u1ea5y t\u1eeb n\u01b0\u1edbc bi\u1ec3n.<\/p>\n\n\n\n
M\u1ea5y n\u0103m g\u1ea7n \u0111\u00e2y, ng\u00e0nh ch\u1ebf t\u1ea1o m\u00e1y c\u00f3 xu h\u01b0\u1edbng d\u00f9ng kim lo\u1ea1i magn\u00e9 thay th\u1ebf cho th\u00e9p, nh\u00f4m, k\u1ebdm. N\u00f3 \u0111ang tr\u1edf th\u00e0nh kim lo\u1ea1i quan tr\u1ecdng trong n\u1ec1n c\u00f4ng nghi\u1ec7p qu\u1ed1c ph\u00f2ng.<\/p>\n","protected":false},"excerpt":{"rendered":"
T\u1eeb kh\u00f3a t\u00ecm ki\u1ebfm: H\u00e3y Tr\u1ea3 L\u1eddi Em T\u1ea1i Sao? \u2013 T\u1eadp 6 – Arkady Leokum Magn\u00e9 c\u00f3 nhi\u1ec1u c\u00f4ng d\u1ee5ng, l\u00e0 ch\u1ea5t m\u00e0 c\u00e1c kim lo\u1ea1i kh\u00e1c kh\u00f4ng th\u1ec3 thay th\u1ebf \u0111\u01b0\u1ee3c. Trong qu\u1ed1c ph\u00f2ng, v\u1eadt li\u1ec7u ch\u1ee7 y\u1ebfu ch\u1ebf t\u1ea1o m\u00e1y bay, t\u00e0u thuy\u1ec1n cao t\u1ed1c l\u00e0 h\u1ee3p kim nh\u00f4m – magn\u00e9, kim […]<\/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":[15],"tags":[],"class_list":["post-14949","post","type-post","status-publish","format-standard","hentry","category-hoi-dap-khoa-hoc"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/14949","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=14949"}],"version-history":[{"count":1,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/14949\/revisions"}],"predecessor-version":[{"id":14950,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/14949\/revisions\/14950"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=14949"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=14949"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=14949"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}