{"id":3837,"date":"2026-07-16T13:37:27","date_gmt":"2026-07-16T05:37:27","guid":{"rendered":"https:\/\/www.nonmetallic-ore.com\/?p=3837"},"modified":"2026-07-16T13:55:33","modified_gmt":"2026-07-16T05:55:33","slug":"what-kind-of-limestone-is-suitable-for-producing-calcium-carbonate","status":"publish","type":"post","link":"https:\/\/www.nonmetallic-ore.com\/vi\/what-kind-of-limestone-is-suitable-for-producing-calcium-carbonate\/","title":{"rendered":"Lo\u1ea1i \u0111\u00e1 v\u00f4i n\u00e0o th\u00edch h\u1ee3p \u0111\u1ec3 s\u1ea3n xu\u1ea5t canxi cacbonat?"},"content":{"rendered":"<p>\u0110\u00e1 v\u00f4i l\u00e0 m\u1ed9t lo\u1ea1i \u0111\u00e1 cacbonat ch\u1ee7 y\u1ebfu bao g\u1ed3m canxit (CaCO\u2083). N\u00f3 \u0111\u00f3ng vai tr\u00f2 l\u00e0 nguy\u00ean li\u1ec7u th\u00f4 c\u01a1 b\u1ea3n cho xi m\u0103ng v\u00e0 c\u1ed1t li\u1ec7u x\u00e2y d\u1ef1ng, c\u0169ng nh\u01b0 l\u00e0 nguy\u00ean li\u1ec7u ch\u00ednh cho c\u00e1c v\u1eadt li\u1ec7u g\u1ed1c canxi m\u1edbi nh\u01b0 canxi oxit (v\u00f4i s\u1ed1ng), canxi hydroxit (v\u00f4i t\u00f4i), canxi cacbonat nh\u1eb9 (PCC) v\u00e0 nano canxi cacbonat.<\/p>\n\n\n\n<p>Tuy nhi\u00ean, ch\u1ea5t l\u01b0\u1ee3ng \u0111\u00e1 v\u00f4i thay \u0111\u1ed5i \u0111\u00e1ng k\u1ec3 t\u00f9y thu\u1ed9c v\u00e0o m\u1ecf. Kh\u00f4ng ph\u1ea3i t\u1ea5t c\u1ea3 c\u00e1c m\u1ecf \u0111\u00e1 v\u00f4i \u0111\u1ec1u ph\u00f9 h\u1ee3p \u0111\u1ec3 s\u1ea3n xu\u1ea5t c\u00e1c s\u1ea3n ph\u1ea9m canxi cacbonat c\u00f3 gi\u00e1 tr\u1ecb cao. Th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc, h\u00e0m l\u01b0\u1ee3ng t\u1ea1p ch\u1ea5t v\u00e0 c\u1ea5u tr\u00fac kho\u00e1ng ch\u1ea5t quy\u1ebft \u0111\u1ecbnh tr\u1ef1c ti\u1ebfp \u0111\u1ebfn t\u00ednh ph\u00f9 h\u1ee3p c\u1ee7a n\u00f3.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"600\" src=\"https:\/\/www.nonmetallic-ore.com\/wp-content\/uploads\/2026\/07\/limestone-edited.webp\" alt=\"\u0111\u00e1 v\u00f4i\" class=\"wp-image-3840\" srcset=\"https:\/\/www.nonmetallic-ore.com\/wp-content\/uploads\/2026\/07\/limestone-edited.webp 800w, https:\/\/www.nonmetallic-ore.com\/wp-content\/uploads\/2026\/07\/limestone-edited-300x225.webp 300w, https:\/\/www.nonmetallic-ore.com\/wp-content\/uploads\/2026\/07\/limestone-edited-768x576.webp 768w, https:\/\/www.nonmetallic-ore.com\/wp-content\/uploads\/2026\/07\/limestone-edited-16x12.webp 16w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption class=\"wp-element-caption\">\u0110\u00e1 v\u00f4i<\/figcaption><\/figure>\n\n\n\n<p>V\u00ec th\u1ebf, <strong>Lo\u1ea1i \u0111\u00e1 v\u00f4i n\u00e0o th\u00edch h\u1ee3p cho s\u1ea3n xu\u1ea5t canxi cacbonat, v\u00e0 lo\u1ea1i n\u00e0o th\u00edch h\u1ee3p h\u01a1n cho s\u1ea3n xu\u1ea5t xi m\u0103ng?<\/strong><\/p>\n\n\n\n<p>\u0110\u1ec3 tr\u1ea3 l\u1eddi c\u00e2u h\u1ecfi n\u00e0y, Zhi Jiashuang v\u00e0 c\u00e1c \u0111\u1ed3ng nghi\u1ec7p \u0111\u00e3 thu th\u1eadp m\u1eabu t\u1eeb c\u00e1c m\u1ecf \u0111\u00e1 v\u00f4i \u0111i\u1ec3n h\u00ecnh tr\u00ean kh\u1eafp c\u00e1c v\u00f9ng mi\u1ec1n c\u1ee7a Trung Qu\u1ed1c v\u00e0 ph\u00e2n t\u00edch \u0111\u1eb7c \u0111i\u1ec3m kho\u00e1ng ch\u1ea5t c\u1ee7a ch\u00fang. D\u1ef1a tr\u00ean c\u00e1c y\u1ebfu t\u1ed1 nh\u01b0 h\u00e0m l\u01b0\u1ee3ng CaO v\u00e0 m\u1ee9c \u0111\u1ed9 t\u1ea1p ch\u1ea5t, h\u1ecd \u0111\u00e3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c c\u00e1c khu v\u1ef1c \u1ee9ng d\u1ee5ng t\u1ed1i \u01b0u cho c\u00e1c lo\u1ea1i \u0111\u00e1 v\u00f4i kh\u00e1c nhau.<\/p>\n\n\n\n<p>H\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n n\u00e0y ph\u00e2n t\u00edch chi ti\u1ebft c\u00e1c ch\u1ec9 s\u1ed1 h\u00f3a h\u1ecdc quan tr\u1ecdng v\u00e0 cung c\u1ea5p chi\u1ebfn l\u01b0\u1ee3c s\u1eed d\u1ee5ng theo t\u1eebng c\u1ea5p \u0111\u1ed9 \u0111\u1ec3 gi\u00fap b\u1ea1n t\u1ed1i \u0111a h\u00f3a gi\u00e1 tr\u1ecb c\u1ee7a ngu\u1ed3n t\u00e0i nguy\u00ean \u0111\u00e1 v\u00f4i.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-1-color\">1. H\u00e0m l\u01b0\u1ee3ng CaO<\/mark><\/h2>\n\n\n\n<p>M\u1ee9c \u0111\u1ed9 c\u1ee7a <strong>H\u00e0m l\u01b0\u1ee3ng CaO<\/strong> \u0110\u00e2y l\u00e0 y\u1ebfu t\u1ed1 quan tr\u1ecdng nh\u1ea5t trong vi\u1ec7c \u0111\u00e1nh gi\u00e1 ch\u1ea5t l\u01b0\u1ee3ng \u0111\u00e1 v\u00f4i. N\u00f3i chung, kh\u1ea3 n\u0103ng ph\u1ea3n \u1ee9ng c\u1ee7a v\u00f4i t\u1ef7 l\u1ec7 thu\u1eadn v\u1edbi h\u00e0m l\u01b0\u1ee3ng CaO c\u1ee7a n\u00f3 \u2014 khi h\u00e0m l\u01b0\u1ee3ng CaO t\u0103ng l\u00ean, ch\u1ec9 s\u1ed1 ph\u1ea3n \u1ee9ng c\u0169ng t\u0103ng theo.<\/p>\n\n\n\n<p><strong>C\u01a1 s\u1edf khoa h\u1ecdc \u0111\u1eb1ng sau n\u00f3:<\/strong><br>Khi h\u00e0m l\u01b0\u1ee3ng CaO \u2264 52%, di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t ri\u00eang v\u00e0 c\u1ea5u tr\u00fac l\u1ed7 x\u1ed1p c\u1ee7a v\u00f4i thu \u0111\u01b0\u1ee3c gi\u1ea3m \u0111\u00e1ng k\u1ec3. \u0110i\u1ec1u n\u00e0y l\u00e0m gi\u1ea3m hi\u1ec7u su\u1ea5t c\u1ee7a n\u00f3 trong c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u00f2i h\u1ecfi \u0111\u1ed9 ph\u1ea3n \u1ee9ng cao, ch\u1eb3ng h\u1ea1n nh\u01b0 ch\u1ea5t kh\u1eed l\u01b0u hu\u1ef3nh trong luy\u1ec7n kim v\u00e0 ch\u1ea5t kh\u1eed tr\u00f9ng ch\u1ea5t th\u1ea3i nguy h\u1ea1i.<\/p>\n\n\n\n<p><strong>S\u1ef1 kh\u00e1c bi\u1ec7t theo v\u00f9ng mi\u1ec1n \u1edf Trung Qu\u1ed1c:<\/strong><br>Do s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 \u0111i\u1ec1u ki\u1ec7n kh\u00ed h\u1eadu v\u00e0 \u0111\u1ecba ch\u1ea5t, nhu c\u1ea7u v\u1ec1 CaO thay \u0111\u1ed5i t\u00f9y theo t\u1eebng khu v\u1ef1c:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u0110\u00e1 v\u00f4i mi\u1ec1n B\u1eafc Trung Qu\u1ed1c:<\/strong> CaO \u2265 53%<\/li>\n\n\n\n<li><strong>\u0110\u00e1 v\u00f4i mi\u1ec1n Nam Trung Qu\u1ed1c:<\/strong> CaO \u2265 54%<\/li>\n<\/ul>\n\n\n\n<p>\u0110\u00e1 v\u00f4i \u0111\u00e1p \u1ee9ng c\u00e1c ng\u01b0\u1ee1ng n\u00e0y mang l\u1ea1i l\u1ee3i th\u1ebf m\u1edf r\u1ed9ng sang chu\u1ed7i s\u1ea3n ph\u1ea9m c\u00f3 gi\u00e1 tr\u1ecb cao, bao g\u1ed3m oxit canxi c\u00f3 \u0111\u1ed9 ph\u1ea3n \u1ee9ng cao, canxi cacbonat nh\u1eb9 v\u00e0 canxi cacbonat nano.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-1-color\">2. T\u1ea1p ch\u1ea5t MgO<\/mark><\/h2>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" width=\"800\" height=\"419\" src=\"https:\/\/www.nonmetallic-ore.com\/wp-content\/uploads\/2025\/07\/Ball-mill-classifer-system-1.webp\" alt=\"H\u1ec7 th\u1ed1ng ph\u00e2n lo\u1ea1i m\u00e1y nghi\u1ec1n bi 1\" class=\"wp-image-3360\" srcset=\"https:\/\/www.nonmetallic-ore.com\/wp-content\/uploads\/2025\/07\/Ball-mill-classifer-system-1.webp 800w, https:\/\/www.nonmetallic-ore.com\/wp-content\/uploads\/2025\/07\/Ball-mill-classifer-system-1-300x157.webp 300w, https:\/\/www.nonmetallic-ore.com\/wp-content\/uploads\/2025\/07\/Ball-mill-classifer-system-1-768x402.webp 768w, https:\/\/www.nonmetallic-ore.com\/wp-content\/uploads\/2025\/07\/Ball-mill-classifer-system-1-18x9.webp 18w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption class=\"wp-element-caption\"><a href=\"https:\/\/www.nonmetallic-ore.com\/vi\/ultrafine-powder-dry-grinding\/\">H\u1ec7 th\u1ed1ng ph\u00e2n lo\u1ea1i m\u00e1y nghi\u1ec1n bi<\/a><\/figcaption><\/figure>\n\n\n\n<p><strong>Magi\u00ea oxit (MgO)<\/strong> MgO l\u00e0 m\u1ed9t trong nh\u1eefng t\u1ea1p ch\u1ea5t c\u00f3 h\u1ea1i ph\u1ed5 bi\u1ebfn nh\u1ea5t trong qu\u1eb7ng \u0111\u00e1 v\u00f4i. H\u00e0m l\u01b0\u1ee3ng MgO qu\u00e1 cao c\u00f3 th\u1ec3 g\u00e2y ra nhi\u1ec1u v\u1ea5n \u0111\u1ec1 trong s\u1ea3n xu\u1ea5t.<\/p>\n\n\n\n<p><strong>C\u01a1 s\u1edf khoa h\u1ecdc \u0111\u1eb1ng sau n\u00f3:<\/strong><br>Trong qu\u00e1 tr\u00ecnh nung v\u00f4i, \u0111\u00e1 v\u00f4i gi\u00e0u magie b\u1eaft \u0111\u1ea7u ph\u00e2n h\u1ee7y thu nhi\u1ec7t trong v\u00f9ng gia nhi\u1ec7t s\u01a1 b\u1ed9 c\u1ee7a l\u00f2. \u0110i\u1ec1u n\u00e0y d\u1eabn \u0111\u1ebfn vi\u1ec7c gia nhi\u1ec7t s\u01a1 b\u1ed9 kh\u00f4ng \u0111\u1ee7 v\u00e0 l\u00e0m ch\u1eadm qu\u00e1 tr\u00ecnh ph\u00e2n h\u1ee7y canxi cacbonat, kh\u00f4ng ch\u1ec9 l\u00e3ng ph\u00ed nhi\u1ec7t n\u0103ng m\u00e0 c\u00f2n l\u00e0m t\u0103ng \u0111\u00e1ng k\u1ec3 t\u1ef7 l\u1ec7 nung ch\u01b0a \u0111\u1ee7. Trong clinker xi m\u0103ng, l\u01b0\u1ee3ng MgO d\u01b0 th\u1eeba t\u1ea1o th\u00e0nh periclase t\u1ef1 do, ch\u1ea5t n\u00e0y th\u1ee7y h\u00f3a ch\u1eadm v\u00e0 g\u00e2y ra s\u1ef1 gi\u00e3n n\u1edf th\u1ec3 t\u00edch, d\u1eabn \u0111\u1ebfn \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh xi m\u0103ng k\u00e9m.<\/p>\n\n\n\n<p><strong>Y\u00eau c\u1ea7u \u0111\u1eb7c th\u00f9 c\u1ee7a ng\u00e0nh:<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">\u1ee8ng d\u1ee5ng<\/th><th class=\"has-text-align-left\" data-align=\"left\">Y\u00eau c\u1ea7u MgO<\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-left\" data-align=\"left\">Clinker xi m\u0103ng (v\u1eadt li\u1ec7u x\u00e2y d\u1ef1ng)<\/td><td class=\"has-text-align-left\" data-align=\"left\">N\u00f3i chung \u22645,0%<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">V\u00f4i luy\u1ec7n kim<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u22641,5%<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Canxi cacbonat nh\u1eb9 (PCC)<\/td><td class=\"has-text-align-left\" data-align=\"left\">&lt;0.7%<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Nano canxi cacbonat<\/td><td class=\"has-text-align-left\" data-align=\"left\">&lt;0,4%<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u0110\u1ed1i v\u1edbi c\u00e1c s\u1ea3n ph\u1ea9m canxi c\u00f3 gi\u00e1 tr\u1ecb gia t\u0103ng cao, y\u00eau c\u1ea7u v\u1ec1 t\u1ea1p ch\u1ea5t \u0111\u1eb7c bi\u1ec7t nghi\u00eam ng\u1eb7t. PCC ch\u1ea5t l\u01b0\u1ee3ng cao c\u1ea7n c\u00f3 MgO. <strong>&lt;0.7%<\/strong>Trong khi \u0111\u00f3, nano-CaCO\u2083 l\u1ea1i c\u1ea7n MgO. <strong>&lt;0,4%<\/strong>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-1-color\">3. T\u1ea1p ch\u1ea5t SiO\u2082<\/mark><\/h2>\n\n\n\n<p><strong>Silicon dioxide (SiO\u2082)<\/strong> \u0110i\u1ec1u n\u00e0y \u0111\u1eb7t ra th\u00e1ch th\u1ee9c nghi\u00eam tr\u1ecdng \u0111\u1ed1i v\u1edbi tu\u1ed5i th\u1ecd c\u1ee7a m\u00e1y nghi\u1ec1n \u0111\u00e1 v\u00f4i, c\u00f4ng su\u1ea5t c\u1ee7a h\u1ec7 th\u1ed1ng nghi\u1ec1n v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng clinker th\u00e0nh ph\u1ea9m.<\/p>\n\n\n\n<p><strong>C\u01a1 s\u1edf khoa h\u1ecdc \u0111\u1eb1ng sau hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y (Hi\u1ec7u \u1ee9ng \u201cGi\u00e3n n\u1edf th\u1ec3 t\u00edch\u201d):<\/strong><br>H\u00e0m l\u01b0\u1ee3ng SiO\u2082 cao l\u00e0m cho \u0111\u00e1 v\u00f4i c\u00f3 t\u00ednh m\u00e0i m\u00f2n cao v\u00e0 kh\u00f3 nghi\u1ec1n, g\u00e2y m\u00e0i m\u00f2n nghi\u00eam tr\u1ecdng thi\u1ebft b\u1ecb v\u00e0 th\u00e0nh silo. Trong qu\u00e1 tr\u00ecnh nung \u1edf 700\u2013800\u00b0C, SiO\u2082 ph\u1ea3n \u1ee9ng v\u1edbi CaO v\u00e0 MgO \u0111\u1ec3 t\u1ea1o th\u00e0nh silicat. Quan tr\u1ecdng h\u01a1n, \u03b2-2CaO\u00b7SiO\u2082 (m\u1eadt \u0111\u1ed9 3,28 g\/cm\u00b3) chuy\u1ec3n h\u00f3a th\u00e0nh \u03b3-2CaO\u00b7SiO\u2082 \u1ed5n \u0111\u1ecbnh h\u01a1n (m\u1eadt \u0111\u1ed9 2,79 g\/cm\u00b3). S\u1ef1 chuy\u1ec3n h\u00f3a n\u00e0y d\u1eabn \u0111\u1ebfn... <strong>s\u1ef1 gi\u00e3n n\u1edf th\u1ec3 t\u00edch kho\u1ea3ng 10%<\/strong>\u0110i\u1ec1u n\u00e0y khi\u1ebfn v\u00f4i b\u1ecb t\u01a1i x\u1ed1p v\u00e0 d\u1ec5 v\u1ee1 v\u1ee5n, l\u00e0m gi\u1ea3m ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m nghi\u00eam tr\u1ecdng.<\/p>\n\n\n\n<p><strong>Y\u00eau c\u1ea7u chung:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0110\u00e1 v\u00f4i d\u00f9ng \u0111\u1ec3 s\u1ea3n xu\u1ea5t clinker xi m\u0103ng: <strong>w(SiO\u2082) &lt; 4,0%<\/strong><\/li>\n\n\n\n<li>\u0110\u1ed1i v\u1edbi c\u00e1c s\u1ea3n ph\u1ea9m c\u00f3 gi\u00e1 tr\u1ecb cao (CaO c\u00f3 \u0111\u1ed9 ph\u1ea3n \u1ee9ng cao, PCC, nano-CaCO\u2083): <strong>SiO\u2082 \u2264 1%<\/strong><\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img decoding=\"async\" width=\"1000\" height=\"800\" src=\"https:\/\/www.nonmetallic-ore.com\/wp-content\/uploads\/2025\/12\/Air-Classifer-and-Ball-Mill2-1.webp\" alt=\"M\u00e1y ph\u00e2n lo\u1ea1i kh\u00ed v\u00e0 m\u00e1y nghi\u1ec1n bi2\" class=\"wp-image-3656\" style=\"width:798px;height:auto\" srcset=\"https:\/\/www.nonmetallic-ore.com\/wp-content\/uploads\/2025\/12\/Air-Classifer-and-Ball-Mill2-1.webp 1000w, https:\/\/www.nonmetallic-ore.com\/wp-content\/uploads\/2025\/12\/Air-Classifer-and-Ball-Mill2-1-300x240.webp 300w, https:\/\/www.nonmetallic-ore.com\/wp-content\/uploads\/2025\/12\/Air-Classifer-and-Ball-Mill2-1-768x614.webp 768w, https:\/\/www.nonmetallic-ore.com\/wp-content\/uploads\/2025\/12\/Air-Classifer-and-Ball-Mill2-1-15x12.webp 15w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><figcaption class=\"wp-element-caption\"><a href=\"https:\/\/www.nonmetallic-ore.com\/vi\/ultrafine-air-classifier\/\">M\u00e1y ph\u00e2n lo\u1ea1i kh\u00ed v\u00e0 m\u00e1y nghi\u1ec1n bi<\/a> cho Canxi Cacbonat<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-1-color\">4. T\u1ea1p ch\u1ea5t Al\u2082O\u2083<\/mark><\/h2>\n\n\n\n<p>Trong qu\u00e1 tr\u00ecnh nung, CaO ph\u1ea3n \u1ee9ng v\u1edbi <strong>Al\u2082O\u2083<\/strong> \u1edf nhi\u1ec7t \u0111\u1ed9 t\u1eeb 500 \u0111\u1ebfn 900\u00b0C.<\/p>\n\n\n\n<p><strong>C\u01a1 s\u1edf khoa h\u1ecdc \u0111\u1eb1ng sau n\u00f3:<\/strong><br>Ph\u1ea3n \u1ee9ng n\u00e0y t\u1ea1o ra m\u1ed9t l\u01b0\u1ee3ng l\u1edbn tricalcium aluminate (3CaO\u00b7Al\u2082O\u2083) c\u00f3 \u0111i\u1ec3m n\u00f3ng ch\u1ea3y th\u1ea5p. C\u00e1c pha c\u00f3 \u0111i\u1ec3m n\u00f3ng ch\u1ea3y th\u1ea5p n\u00e0y l\u00e0m gi\u1ea3m \u0111\u00e1ng k\u1ec3 kh\u1ea3 n\u0103ng ph\u1ea3n \u1ee9ng c\u1ee7a v\u00f4i. N\u1ebfu t\u1ea1o th\u00e0nh m\u1ed9t l\u01b0\u1ee3ng l\u1edbn c\u00e1c h\u1ee3p ch\u1ea5t n\u00e0y, s\u1ebd d\u1ec5 d\u00e0ng h\u00ecnh th\u00e0nh pha l\u1ecfng, khi\u1ebfn v\u00f4i v\u00f3n c\u1ee5c v\u00e0 t\u1ea1o th\u00e0nh c\u00e1c kh\u1ed1i. \u0110i\u1ec1u n\u00e0y \u1ea3nh h\u01b0\u1edfng nghi\u00eam tr\u1ecdng \u0111\u1ebfn n\u0103ng su\u1ea5t l\u00f2 nung v\u00e0 r\u00fat ng\u1eafn tu\u1ed5i th\u1ecd c\u1ee7a c\u1ea3 l\u00f2 nung v\u00e0 v\u1eadt li\u1ec7u ch\u1ecbu l\u1eeda.<\/p>\n\n\n\n<p><strong>Y\u00eau c\u1ea7u chung:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Ng\u00e0nh c\u00f4ng nghi\u1ec7p v\u1eadt li\u1ec7u x\u00e2y d\u1ef1ng: <strong>Al\u2082O\u2083 &lt; 2,0%<\/strong><\/li>\n\n\n\n<li>C\u00e1c v\u1eadt li\u1ec7u m\u1edbi c\u00f3 gi\u00e1 tr\u1ecb cao g\u1ed1c canxi: <strong>Al\u2082O\u2083 \u2264 0,4%<\/strong><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-1-color\">5. T\u1ea1p ch\u1ea5t Fe\u2082O\u2083<\/mark><\/h2>\n\n\n\n<p><strong>Oxit s\u1eaft (Fe\u2082O\u2083)<\/strong> \u0110i\u1ec1u n\u00e0y \u0111\u1eb7c bi\u1ec7t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u00e1c s\u1ea3n ph\u1ea9m canxi cacbonat v\u00ec n\u00f3 \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn m\u00e0u s\u1eafc c\u1ee7a s\u1ea3n ph\u1ea9m.<\/p>\n\n\n\n<p><strong>C\u01a1 s\u1edf khoa h\u1ecdc \u0111\u1eb1ng sau n\u00f3:<\/strong><br>CaO ph\u1ea3n \u1ee9ng v\u1edbi Fe\u2082O\u2083 \u1edf 800\u2013900\u00b0C t\u1ea1o ra c\u00e1c mu\u1ed1i canxi ferrat c\u00f3 \u0111i\u1ec3m n\u00f3ng ch\u1ea3y th\u1ea5p, khi\u1ebfn v\u00f4i tr\u1edf n\u00ean d\u00ednh. H\u01a1n n\u1eefa, CO \u0111\u01b0\u1ee3c t\u1ea1o ra trong qu\u00e1 tr\u00ecnh nung \u0111\u00f3ng vai tr\u00f2 l\u00e0 ch\u1ea5t kh\u1eed, chuy\u1ec3n \u0111\u1ed5i Fe\u2082O\u2083 th\u00e0nh FeO d\u1ec5 n\u00f3ng ch\u1ea3y, l\u00e0m tr\u1ea7m tr\u1ecdng th\u00eam hi\u1ec7n t\u01b0\u1ee3ng v\u00f3n c\u1ee5c. Trong PCC v\u00e0 nano-CaCO\u2083, s\u1eaft t\u1ed3n t\u1ea1i ch\u1ee7 y\u1ebfu d\u01b0\u1edbi d\u1ea1ng Fe\u00b3\u207a, \u0111\u00e2y l\u00e0 y\u1ebfu t\u1ed1 ch\u00ednh g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng gi\u1ea3m \u0111\u1ed9 tr\u1eafng.<\/p>\n\n\n\n<p><strong>Y\u00eau c\u1ea7u chung:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Ng\u00e0nh c\u00f4ng nghi\u1ec7p luy\u1ec7n kim (ch\u1ea5t tr\u1ee3 dung trong s\u1ea3n xu\u1ea5t th\u00e9p): <strong>Fe\u2082O\u2083 &lt; 4%<\/strong><\/li>\n\n\n\n<li>Canxi cacbonat nh\u1eb9 (PCC): <strong>Fe\u2082O\u2083 \u2264 0,5%<\/strong><\/li>\n\n\n\n<li>Nano-canxi cacbonat: <strong>Fe\u2082O\u2083 \u2264 0,1%<\/strong><\/li>\n<\/ul>\n\n\n\n<p>\u0110\u00e1 v\u00f4i \u00edt s\u1eaft r\u1ea5t c\u1ea7n thi\u1ebft \u0111\u1ec3 s\u1ea3n xu\u1ea5t c\u00e1c s\u1ea3n ph\u1ea9m canxi cacbonat m\u00e0u tr\u1eafng s\u00e1ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong nh\u1ef1a, s\u01a1n ph\u1ee7, gi\u1ea5y v\u00e0 ch\u1ea5t \u0111\u1ed9n cao c\u1ea5p.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"887\" height=\"664\" src=\"https:\/\/www.nonmetallic-ore.com\/wp-content\/uploads\/2024\/03\/295d6ad1f3f7b3918e8a23eee485f4a9.webp\" alt=\"\u0110\u1ecba \u0111i\u1ec3m d\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t ph\u00e2n lo\u1ea1i b\u1eb1ng m\u00e1y nghi\u1ec1n bi canxi cacbonat\" class=\"wp-image-2462\" style=\"aspect-ratio:1.3358532518065591;width:781px;height:auto\" srcset=\"https:\/\/www.nonmetallic-ore.com\/wp-content\/uploads\/2024\/03\/295d6ad1f3f7b3918e8a23eee485f4a9.webp 887w, https:\/\/www.nonmetallic-ore.com\/wp-content\/uploads\/2024\/03\/295d6ad1f3f7b3918e8a23eee485f4a9-300x225.webp 300w, https:\/\/www.nonmetallic-ore.com\/wp-content\/uploads\/2024\/03\/295d6ad1f3f7b3918e8a23eee485f4a9-768x575.webp 768w\" sizes=\"(max-width: 887px) 100vw, 887px\" \/><figcaption class=\"wp-element-caption\">\u0110\u1ecba \u0111i\u1ec3m d\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t ph\u00e2n lo\u1ea1i m\u00e1y nghi\u1ec1n bi canxi cacbonat<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-1-color\">6. Chi\u1ebfn l\u01b0\u1ee3c s\u1eed d\u1ee5ng theo c\u1ea5p b\u1eadc<\/mark><\/h2>\n\n\n\n<p>D\u1ef1a tr\u00ean ph\u00e2n t\u00edch to\u00e0n di\u1ec7n h\u00e0m l\u01b0\u1ee3ng CaO v\u00e0 m\u1ee9c \u0111\u1ed9 t\u1ea1p ch\u1ea5t, ch\u00fang t\u00f4i \u0111\u1ec1 xu\u1ea5t khung s\u1eed d\u1ee5ng theo t\u1eebng c\u1ea5p \u0111\u1ed9 nh\u01b0 sau:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">C\u1ea5p<\/th><th class=\"has-text-align-left\" data-align=\"left\">H\u00e0m l\u01b0\u1ee3ng CaO<\/th><th class=\"has-text-align-left\" data-align=\"left\">\u0110\u1eb7c t\u00ednh t\u1ea1p ch\u1ea5t<\/th><th class=\"has-text-align-left\" data-align=\"left\">\u1ee8ng d\u1ee5ng \u0111\u01b0\u1ee3c \u0111\u1ec1 xu\u1ea5t<\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-left\" data-align=\"left\"><strong>Ch\u1ea5t l\u01b0\u1ee3ng cao<\/strong><\/td><td class=\"has-text-align-left\" data-align=\"left\">\u2265 54%<\/td><td class=\"has-text-align-left\" data-align=\"left\">H\u00e0m l\u01b0\u1ee3ng CaO cao; t\u1ea1p ch\u1ea5t (MgO, Fe\u2082O\u2083, SiO\u2082, Al\u2082O\u2083) c\u1ef1c th\u1ea5p; th\u00e0nh ph\u1ea7n pha l\u00e0 canxi cacbonat tinh khi\u1ebft; c\u1ea5u tr\u00fac \u0111\u1ed3ng nh\u1ea5t; t\u1ea1p ch\u1ea5t v\u1ebft ph\u00e2n t\u00e1n d\u01b0\u1edbi d\u1ea1ng c\u00e1c h\u1ea1t nh\u1ecf k\u00edch th\u01b0\u1edbc micromet, g\u00e2y r\u1ee7i ro t\u1ed1i thi\u1ec3u cho c\u00e1c s\u1ea3n ph\u1ea9m ti\u1ebfp theo.<\/td><td class=\"has-text-align-left\" data-align=\"left\"><strong>Canxi cacbonat (CaO) c\u00f3 \u0111\u1ed9 ph\u1ea3n \u1ee9ng cao, xi m\u0103ng Portland tr\u1ecdng l\u01b0\u1ee3ng nh\u1eb9 (PCC), nano-CaCO\u2083<\/strong> (Chu\u1ed7i s\u1ea3n ph\u1ea9m c\u00f3 gi\u00e1 tr\u1ecb gia t\u0103ng cao)<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\"><strong>H\u1ea1ng trung b\u00ecnh<\/strong><\/td><td class=\"has-text-align-left\" data-align=\"left\">52% \u2013 54%<\/td><td class=\"has-text-align-left\" data-align=\"left\">M\u1ee9c \u0111\u1ed9 t\u1ea1p ch\u1ea5t v\u1eeba ph\u1ea3i; c\u00e1c t\u1ea1p ch\u1ea5t ph\u1ed5 bi\u1ebfn bao g\u1ed3m th\u1ea1ch anh (SiO\u2082) v\u00e0 dolomit [CaMg(CO\u2083)\u2082]; c\u00e1c pha t\u1ea1p ch\u1ea5t \u0111\u01b0\u1ee3c ph\u00e2n b\u1ed1 th\u00e0nh t\u1eebng c\u1ee5m trong c\u1ea5u tr\u00fac, g\u00e2y ra m\u1ed9t s\u1ed1 \u1ea3nh h\u01b0\u1edfng b\u1ea5t l\u1ee3i \u0111\u1ebfn hi\u1ec7u su\u1ea5t s\u1ea3n ph\u1ea9m.<\/td><td class=\"has-text-align-left\" data-align=\"left\"><strong>Canxi oxit ho\u1ea1t t\u00ednh, Canxi hydroxit (v\u00f4i c\u00f4ng nghi\u1ec7p)<\/strong><\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\"><strong>Ch\u1ea5t l\u01b0\u1ee3ng th\u1ea5p<\/strong><\/td><td class=\"has-text-align-left\" data-align=\"left\">&lt; 52%<\/td><td class=\"has-text-align-left\" data-align=\"left\">H\u00e0m l\u01b0\u1ee3ng c\u00e1c th\u00e0nh ph\u1ea7n c\u00f3 l\u1ee3i th\u1ea5p h\u01a1n; h\u00e0m l\u01b0\u1ee3ng c\u00e1c th\u00e0nh ph\u1ea7n c\u00f3 h\u1ea1i cao h\u01a1n; t\u1ea1p ch\u1ea5t th\u01b0\u1eddng ph\u00e2n b\u1ed1 th\u00e0nh c\u00e1c c\u1ee5m d\u00e0y \u0111\u1eb7c, d\u1ea1ng v\u1ea3y; nguy c\u01a1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m cu\u1ed1i c\u00f9ng cao h\u01a1n.<\/td><td class=\"has-text-align-left\" data-align=\"left\"><strong>Clinker xi m\u0103ng, c\u1ed1t li\u1ec7u x\u00e2y d\u1ef1ng, v\u1eadt li\u1ec7u n\u1ec1n \u0111\u01b0\u1eddng.<\/strong> (\u1ee8ng d\u1ee5ng quy m\u00f4 l\u1edbn)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">7. K\u1ebft lu\u1eadn<\/h2>\n\n\n\n<p>Vi\u1ec7c l\u1ef1a ch\u1ecdn lo\u1ea1i \u0111\u00e1 v\u00f4i ph\u00f9 h\u1ee3p \u0111\u1ec3 s\u1ea3n xu\u1ea5t canxi cacbonat \u0111\u00f2i h\u1ecfi ph\u1ea3i hi\u1ec3u r\u00f5 th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc c\u1ee7a n\u00f3. H\u00e0m l\u01b0\u1ee3ng CaO cao (\u226554%) k\u1ebft h\u1ee3p v\u1edbi h\u00e0m l\u01b0\u1ee3ng c\u1ef1c th\u1ea5p c\u1ee7a MgO (&lt;0,4%), SiO\u2082 (\u22641%), Al\u2082O\u2083 (\u22640,4%) v\u00e0 Fe\u2082O\u2083 (\u22640,1%) l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 s\u1ea3n xu\u1ea5t c\u00e1c s\u1ea3n ph\u1ea9m c\u00f3 gi\u00e1 tr\u1ecb gia t\u0103ng cao nh\u01b0 canxi cacbonat nano v\u00e0 canxi cacbonat tr\u1ecdng l\u01b0\u1ee3ng nh\u1eb9.<\/p>\n\n\n\n<figure class=\"wp-block-embed aligncenter is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe title=\"M\u00e1y ph\u00e2n lo\u1ea1i TDC, d\u00f9ng cho xi m\u0103ng, \u0111\u00e1 v\u00f4i, canxi cacbonat v\u00e0 b\u1ed9t talc.\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/QfbqdyLemaY?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><mark style=\"background-color:rgba(0, 0, 0, 0);color:#cf2e2e\" class=\"has-inline-color\">B\u1ed9t EPIC<\/mark><\/h2>\n\n\n\n<p>Tuy nhi\u00ean, nguy\u00ean li\u1ec7u th\u00f4 ch\u1ea5t l\u01b0\u1ee3ng cao ch\u1ec9 l\u00e0 m\u1ed9t n\u1eeda v\u1ea5n \u0111\u1ec1. Vi\u1ec7c bi\u1ebfn \u0111\u00e1 v\u00f4i th\u00f4 th\u00e0nh b\u1ed9t cao c\u1ea5p \u0111\u00f2i h\u1ecfi c\u00f4ng ngh\u1ec7 ch\u1ebf bi\u1ebfn ti\u00ean ti\u1ebfn. V\u1edbi h\u01a1n 20 n\u0103m kinh nghi\u1ec7m trong ch\u1ebf bi\u1ebfn qu\u1eb7ng phi kim lo\u1ea1i, <strong>B\u1ed9t Epic<\/strong> cung c\u1ea5p c\u00e1c gi\u1ea3i ph\u00e1p t\u00edch h\u1ee3p bao g\u1ed3m <strong><a href=\"https:\/\/www.nonmetallic-ore.com\/vi\/ultrafine-powder-dry-grinding\/\">nghi\u1ec1n<\/a>, <a href=\"https:\/\/www.nonmetallic-ore.com\/vi\/ultrafine-air-classifier\/\">ph\u00e2n lo\u1ea1i<\/a>, V\u00e0 <a href=\"https:\/\/www.nonmetallic-ore.com\/vi\/surface-modification\/\">s\u1eeda \u0111\u1ed5i b\u1ec1 m\u1eb7t<\/a><\/strong>. <\/p>\n\n\n\n<p>B\u1ea1n \u0111\u00e3 s\u1eb5n s\u00e0ng t\u1ed1i \u01b0u h\u00f3a d\u00e2y chuy\u1ec1n ch\u1ebf bi\u1ebfn \u0111\u00e1 v\u00f4i c\u1ee7a m\u00ecnh ch\u01b0a? H\u00e3y li\u00ean h\u1ec7 v\u1edbi ch\u00fang t\u00f4i ngay h\u00f4m nay \u0111\u1ec3 \u0111\u01b0\u1ee3c t\u01b0 v\u1ea5n mi\u1ec5n ph\u00ed v\u00e0 nh\u1eadn c\u00e1c gi\u1ea3i ph\u00e1p ph\u00f9 h\u1ee3p!<\/p>\n\n\n\n<div class=\"wp-block-contact-form-7-contact-form-selector\">\n<div class=\"wpcf7 no-js\" id=\"wpcf7-f16-o1\" lang=\"zh-CN\" dir=\"ltr\" data-wpcf7-id=\"16\">\n<div class=\"screen-reader-response\"><p role=\"status\" aria-live=\"polite\" aria-atomic=\"true\"><\/p> <ul><\/ul><\/div>\n<form action=\"\/vi\/wp-json\/wp\/v2\/posts\/3837#wpcf7-f16-o1\" method=\"post\" class=\"wpcf7-form init\" aria-label=\"\u7559\u8a00\u8868\u5355\" novalidate=\"novalidate\" data-status=\"init\" data-trp-original-action=\"\/vi\/wp-json\/wp\/v2\/posts\/3837#wpcf7-f16-o1\">\n<fieldset class=\"hidden-fields-container\"><input type=\"hidden\" name=\"_wpcf7\" value=\"16\" \/><input type=\"hidden\" name=\"_wpcf7_version\" value=\"6.1.4\" \/><input type=\"hidden\" name=\"_wpcf7_locale\" 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type=\"email\" name=\"your-email\" \/><\/span>\n\t\t<\/p>\n\t<\/div>\n\t<div class=\"one-half\">\n\t\t<p><span class=\"wpcf7-form-control-wrap\" data-name=\"pnone\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-tel wpcf7-validates-as-required wpcf7-text wpcf7-validates-as-tel\" aria-required=\"true\" aria-invalid=\"false\" placeholder=\"Pnone ho\u1eb7c Whatsapp c\u1ee7a b\u1ea1n*\" value=\"\" type=\"tel\" name=\"pnone\" \/><\/span>\n\t\t<\/p>\n\t<\/div>\n\t<div class=\"one-half last\">\n\t\t<p><span class=\"wpcf7-form-control-wrap\" data-name=\"your-subject\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-text\" aria-invalid=\"false\" placeholder=\"C\u00f4ng ty c\u1ee7a b\u1ea1n\" value=\"\" type=\"text\" name=\"your-subject\" \/><\/span>\n\t\t<\/p>\n\t<\/div>\n\t<div>\n\t\t<p><span class=\"wpcf7-form-control-wrap\" data-name=\"your-message\"><textarea cols=\"40\" rows=\"3\" maxlength=\"2000\" class=\"wpcf7-form-control wpcf7-textarea\" 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xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 576 512\"><path fill=\"currentColor\" d=\"M488 313v143c0 13-11 24-24 24H348c-7 0-12-5-12-12V356c0-7-5-12-12-12h-72c-7 0-12 5-12 12v112c0 7-5 12-12 12H112c-13 0-24-11-24-24V313c0-4 2-7 4-10l188-154c5-4 11-4 16 0l188 154c2 3 4 6 4 10zm84-61l-84-69V44c0-6-5-12-12-12h-56c-7 0-12 6-12 12v73l-89-74a48 48 0 00-61 0L4 252c-5 4-5 12-1 17l25 31c5 5 12 5 17 1l235-193c5-4 11-4 16 0l235 193c5 5 13 4 17-1l25-31c4-6 4-13-1-17z\"\/><\/svg><\/label><label><input aria-label=\"3\" type=\"radio\" name=\"kc_captcha\" value=\"bot\" \/><svg aria-hidden=\"true\" role=\"img\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\"><path fill=\"currentColor\" d=\"M192 384h192c53 0 96-43 96-96h32a128 128 0 000-256H120c-13 0-24 11-24 24v232c0 53 43 96 96 96zM512 96a64 64 0 010 128h-32V96h32zm48 384H48c-47 0-61-64-36-64h584c25 0 11 64-36 64z\"\/><\/svg><\/label>\r\n    <\/span>\r\n    <span style=\"display:none\">\r\n        <input type=\"text\" name=\"kc_honeypot\">\r\n    <\/span><\/span><\/span>\n\t\t<\/p>\n\t<\/div>\n\t<div>\n\t\t<p><input class=\"wpcf7-form-control wpcf7-submit has-spinner\" type=\"submit\" value=\"N\u1ed9p\" \/>\n\t\t<\/p>\n\t<\/div>\n<\/div>\n<style>\n.keen-form div{margin-bottom:5px;}\n.keen-form div p{margin-bottom:0px !important;}\n.one-half,.one-third {\n position: relative;\n margin-right: 4%;\n float: left;\n z-index: 99;\n}\n.one-half { width: 48%; }\n.one-third { width: 30.66%; }\n.last {\n margin-right: 0 !important;\n clear: right;\n}\n@media only screen and (max-width: 767px) {\n .one-half, .one-third {\n width: 100%;\n margin-right: 0;\n }\n}\n<\/style><div class=\"wpcf7-response-output\" aria-hidden=\"true\"><\/div>\n<input type=\"hidden\" name=\"trp-form-language\" value=\"vi\"\/><\/form>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>\u0110\u00e1 v\u00f4i l\u00e0 m\u1ed9t lo\u1ea1i \u0111\u00e1 cacbonat ch\u1ee7 y\u1ebfu bao g\u1ed3m canxit (CaCO\u2083). N\u00f3 \u0111\u00f3ng vai tr\u00f2 l\u00e0 nguy\u00ean li\u1ec7u th\u00f4 c\u01a1 b\u1ea3n cho xi m\u0103ng v\u00e0 c\u1ed1t li\u1ec7u x\u00e2y d\u1ef1ng, c\u0169ng nh\u01b0 l\u00e0 nguy\u00ean li\u1ec7u ch\u00ednh cho c\u00e1c v\u1eadt li\u1ec7u g\u1ed1c canxi m\u1edbi nh\u01b0 canxi oxit (v\u00f4i s\u1ed1ng), canxi hydroxit (v\u00f4i t\u00f4i), canxi cacbonat nh\u1eb9 (PCC) v\u00e0 nano canxi cacbonat. Tuy nhi\u00ean, ch\u1ea5t l\u01b0\u1ee3ng \u0111\u00e1 v\u00f4i r\u1ea5t kh\u00e1c nhau [\u2026]<\/p>","protected":false},"author":1,"featured_media":2986,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1,6],"tags":[87,86,85],"class_list":["post-3837","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ultrafine-air-classifier","category-ultrafine-powder-grinding","tag-calcium-carbonate-raw-material","tag-high-purity-limestone","tag-limestone-for-calcium-carbonate"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>What kind of limestone is suitable for producing calcium carbonate? - Calcium Carbonate Production Line<\/title>\n<meta name=\"description\" content=\"Discover which limestone grades are best for calcium carbonate production. 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