{"id":115217,"date":"2021-12-14T17:20:18","date_gmt":"2021-12-14T09:20:18","guid":{"rendered":"https:\/\/www.alpapowder.com\/115217\/"},"modified":"2021-12-14T17:20:18","modified_gmt":"2021-12-14T09:20:18","slug":"cong-nghe-che-bien-bentonite","status":"publish","type":"post","link":"https:\/\/www.alpapowder.com\/vi\/115217\/","title":{"rendered":"C\u00f4ng ngh\u1ec7 ch\u1ebf bi\u1ebfn bentonite"},"content":{"rendered":"<p>Bentonite l\u00e0 m\u1ed9t lo\u1ea1i \u0111\u00e1 s\u00e9t v\u1edbi th\u00e0nh ph\u1ea7n kho\u00e1ng ch\u1ea5t ch\u00ednh l\u00e0 montmorillonite. N\u00f3 th\u01b0\u1eddng ch\u1ee9a m\u1ed9t l\u01b0\u1ee3ng nh\u1ecf m\u00f9n, cao lanh, zeolit, fenspat, canxit v\u00e0 c\u00e1c kho\u00e1ng ch\u1ea5t kh\u00e1c. Bentonite l\u00e0 t\u00e0i nguy\u00ean kho\u00e1ng phi kim lo\u1ea1i qu\u00fd v\u1edbi h\u01a1n 1.000 c\u00f4ng d\u1ee5ng v\u00e0 \u0111\u01b0\u1ee3c m\u1ec7nh danh l\u00e0 &#8220;v\u1eadt li\u1ec7u v\u1ea1n n\u0103ng&#8221;. Bentonite c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c chia th\u00e0nh d\u1ef1a tr\u00ean canxi, d\u1ef1a tr\u00ean natri, d\u1ef1a tr\u00ean magi\u00ea, natri-canxi v\u00e0 magi\u00ea-natri theo c\u00e1c cation kh\u00e1c nhau gi\u1eefa c\u00e1c l\u1edbp <a class=\"wpil_keyword_link\" href=\"https:\/\/www.alpapowder.com\/projects\/minerals\/\"   title=\"montmorillonite\" data-wpil-keyword-link=\"linked\">montmorillonite<\/a>.<\/p>\n<p>Bentonite n\u00f3i chung c\u00f3 m\u00e0u tr\u1eafng, x\u00e1m, h\u1ed3ng, v\u00e0ng, n\u00e2u v\u00e0 \u0111en v\u1edbi nhi\u1ec1u m\u00e0u s\u1eafc kh\u00e1c nhau, v\u00e0 h\u00ecnh d\u1ea1ng c\u1ee7a n\u00f3 th\u01b0\u1eddng l\u00e0 kh\u1ed1i tinh th\u1ec3 m\u1eadt m\u00e3 b\u1eb1ng \u0111\u1ea5t, \u0111\u00f4i khi \u1edf d\u1ea1ng v\u1ea3y nh\u1ecf v\u00e0 h\u00ecnh c\u1ea7u. M\u1ec1m v\u00e0 tr\u01a1n, tr\u01b0\u01a1ng n\u1edf n\u01b0\u1edbc, \u0111\u1ed9 h\u00fat n\u01b0\u1edbc t\u1ed1i \u0111a c\u00f3 th\u1ec3 g\u1ea5p 8-15 l\u1ea7n th\u1ec3 t\u00edch c\u1ee7a n\u00f3, v\u1edbi d\u1ea7u m\u1ee1 ho\u1eb7c \u00e1nh s\u00e1p, v\u1ebft \u0111\u1ee9t g\u00e3y c\u00f3 h\u00ecnh r\u0103ng c\u01b0a ho\u1eb7c r\u0103ng c\u01b0a, \u0111\u1ed9 c\u1ee9ng t\u1eeb 2 \u0111\u1ebfn 2,5; m\u1eadt \u0111\u1ed9 l\u00e0 2 \u0111\u1ebfn 2,7g \/ cm<sup>3<\/sup>, \u0111i\u1ec3m n\u00f3ng ch\u1ea3y l\u00e0 1330 ~ 1430 \u2103. Bentonite c\u00f3 c\u00e1c \u0111\u1eb7c t\u00ednh tr\u01b0\u01a1ng n\u1edf, h\u1ea5p ph\u1ee5, huy\u1ec1n ph\u00f9, ph\u00e2n t\u00e1n, trao \u0111\u1ed5i cation, \u1ed5n \u0111\u1ecbnh, thixotropy, kh\u00f4ng \u0111\u1ed9c v\u00e0 k\u1ebft d\u00ednh.<\/p>\n<p><img decoding=\"async\" class=\"wp-image-111596 size-full aligncenter\" src=\"https:\/\/www.alpapowder.com\/wp-content\/uploads\/2021\/09\/powder11-1.jpg\" alt=\"\" width=\"1000\" height=\"500\" srcset=\"https:\/\/www.alpapowder.com\/wp-content\/uploads\/2021\/09\/powder11-1.jpg 1000w, https:\/\/www.alpapowder.com\/wp-content\/uploads\/2021\/09\/powder11-1-300x150.jpg 300w, https:\/\/www.alpapowder.com\/wp-content\/uploads\/2021\/09\/powder11-1-768x384.jpg 768w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/p>\n<p>\u0110\u1ea5t s\u00e9t ph\u1ed5 qu\u00e1t c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m ch\u1ea5t k\u1ebft d\u00ednh, ch\u1ea5t h\u1ea5p ph\u1ee5, ch\u1ea5t h\u1ea5p th\u1ee5, ch\u1ea5t \u0111\u1ed9n, ch\u1ea5t x\u00fac t\u00e1c, ch\u1ea5t thay \u0111\u1ed5i, ch\u1ea5t k\u1ebft t\u1ee5, ch\u1ea5t t\u1ea9y r\u1eeda, ch\u1ea5t \u1ed5n \u0111\u1ecbnh, ch\u1ea5t l\u00e0m \u0111\u1eb7c v\u00e0 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00e1c vi\u00ean qu\u1eb7ng s\u1eaft, \u0111\u00fac, khoan, D\u1ea7u m\u1ecf, h\u00f3a ch\u1ea5t, D\u1ec7t may, gi\u1ea5y, cao su , n\u00f4ng nghi\u1ec7p, y h\u1ecdc v\u00e0 c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p kh\u00e1c. V\u1edbi s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a khoa h\u1ecdc v\u00e0 c\u00f4ng ngh\u1ec7, vi\u1ec7c ti\u00eau th\u1ee5 bentonit \u0111\u00e3 \u0111\u01b0\u1ee3c m\u1edf r\u1ed9ng t\u1eeb c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p \u0111\u00fac vi\u00ean b\u00f9n v\u00e0 qu\u1eb7ng s\u1eaft khoan truy\u1ec1n th\u1ed1ng sang c\u00e1c ng\u00e0nh h\u00f3a d\u1ea7u, c\u00f4ng nghi\u1ec7p nh\u1eb9, n\u00f4ng nghi\u1ec7p, b\u1ea3o v\u1ec7 m\u00f4i tr\u01b0\u1eddng, x\u00e2y d\u1ef1ng v\u00e0 c\u00e1c l\u0129nh v\u1ef1c kh\u00e1c, \u0111\u01b0a \u0111\u1ebfn m\u1ee9c \u0111\u1ed9 ch\u1ebf bi\u1ebfn cao h\u01a1n. C\u00f4ng ngh\u1ec7. Y\u00eau c\u1ea7u.<\/p>\n<h4>C\u00f4ng ngh\u1ec7 ch\u1ebf bi\u1ebfn bentonite-tinh ch\u1ebf<\/h4>\n<p>C\u00e1c ph\u01b0\u01a1ng ph\u00e1p tinh ch\u1ebf bentonit bao g\u1ed3m tinh ch\u1ebf h\u00f3a h\u1ecdc v\u00e0 tinh l\u1ecdc v\u1eadt l\u00fd. Thanh l\u1ecdc v\u1eadt l\u00fd \u0111\u01b0\u1ee3c chia th\u00e0nh l\u1ef1a ch\u1ecdn b\u1eb1ng tay, ch\u1ecdn kh\u00f4ng kh\u00ed (l\u1ecdc kh\u00f4) v\u00e0 ch\u1ecdn n\u01b0\u1edbc (l\u1ecdc \u01b0\u1edbt).<\/p>\n<ul>\n<li><strong>Ch\u1ecdn tay<\/strong><\/li>\n<\/ul>\n<p>N\u00f3 ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong \u0111\u1ea5t th\u00f4 c\u00f3 h\u00e0m l\u01b0\u1ee3ng <a class=\"wpil_keyword_link\" href=\"https:\/\/www.alpapowder.com\/projects\/minerals\/\"   title=\"montmorillonite\" data-wpil-keyword-link=\"linked\">montmorillonite<\/a> cao, qu\u1eb7ng th\u00f4 bentonite \u2192 nghi\u1ec1n \u2192 s\u1ea5y kh\u00f4 \u2192 ch\u1ecdn tay \u2192 nghi\u1ec1n \u2192 \u0111\u00f3ng g\u00f3i.<\/p>\n<ul>\n<li><strong>L\u00e0m s\u1ea1ch kh\u00f4 \/ t\u1eddi<\/strong><\/li>\n<\/ul>\n<p>Th\u00edch h\u1ee3p cho qu\u1eb7ng c\u00f3 h\u00e0m l\u01b0\u1ee3ng <a class=\"wpil_keyword_link\" href=\"https:\/\/www.alpapowder.com\/projects\/minerals\/\"   title=\"montmorillonite\" data-wpil-keyword-link=\"linked\">montmorillonite<\/a> cao (l\u1edbn h\u01a1n 80%), c\u1ee1 h\u1ea1t m\u1ecbn h\u01a1n v\u00e0 qu\u1eb7ng kho\u00e1ng th\u1ea1ch anh, fenspat, bentonit th\u00f4 h\u01a1n \u2192 l\u00e0m kh\u00f4 t\u1ef1 nhi\u00ean \u2192 nghi\u1ec1n \u2192 l\u00e0m kh\u00f4 kh\u00f4ng kh\u00ed \u2192 nghi\u1ec1n \u2192 t\u00e1ch v\u00e0 ph\u00e2n lo\u1ea1i kh\u00f4ng kh\u00ed \u2192 \u0111\u00f3ng g\u00f3i<\/p>\n<ul>\n<li><strong>L\u1ecdc \u01b0\u1edbt \/ l\u1ef1a ch\u1ecdn n\u01b0\u1edbc<\/strong><\/li>\n<\/ul>\n<p>N\u00f3 th\u00edch h\u1ee3p cho bentonit c\u1ea5p th\u1ea5p ch\u1ee9a 30% -80% h\u00e0m l\u01b0\u1ee3ng <a class=\"wpil_keyword_link\" href=\"https:\/\/www.alpapowder.com\/projects\/minerals\/\"   title=\"montmorillonite\" data-wpil-keyword-link=\"linked\">montmorillonite<\/a> trong qu\u1eb7ng th\u00f4, ho\u1eb7c bentonit ch\u1ee9a fenspat v\u00e0 th\u1ea1ch anh v\u1edbi k\u00edch th\u01b0\u1edbc h\u1ea1t m\u1ecbn h\u01a1n, qu\u1eb7ng th\u00f4 bentonit \u2192 nghi\u1ec1n \u2192 nghi\u1ec1n (th\u00eam ch\u1ea5t ph\u00e2n t\u00e1n) \u2192 l\u1eafng v\u00e0 t\u00e1ch \u2192 t\u00e1ch ly t\u00e2m c\u1ee7a huy\u1ec1n ph\u00f9 (th\u00eam ch\u1ea5t keo t\u1ee5) \u2192 l\u1ecdc \u2192 l\u00e0m kh\u00f4 \u2192 ph\u00e2n h\u1ee7y v\u00e0 kh\u1eed tr\u00f9ng h\u1ee3p \u2192 \u0111\u00f3ng g\u00f3i.<\/p>\n<ul>\n<li><strong>Thanh l\u1ecdc h\u00f3a h\u1ecdc<\/strong><\/li>\n<\/ul>\n<p>Ph\u01b0\u01a1ng ph\u00e1p d\u00f9ng thu\u1ed1c th\u1eed ph\u1ea3n \u1ee9ng h\u00f3a h\u1ecdc v\u1edbi t\u1ea1p ch\u1ea5t kho\u00e1ng c\u00f3 trong bentonit \u0111\u1ec3 lo\u1ea1i b\u1ecf ch\u00fang, th\u01b0\u1eddng d\u00f9ng ki\u1ec1m m\u1ea1nh \u0111\u1ec3 kh\u1eed cristobalit v\u00e0 th\u1ea1ch anh, nguy\u00ean t\u1eafc ph\u1ea3n \u1ee9ng l\u00e0: \u00a02NaOH + SiO<sub>2<\/sub>\u00a0= NaSiO<sub>3<\/sub>\u00a0+ H<sub>2<\/sub>O.<\/p>\n<ul>\n<li><strong>Thanh l\u1ecdc h\u1ee3p ch\u1ea5t<\/strong><\/li>\n<\/ul>\n<p>Trong qu\u00e1 tr\u00ecnh tinh ch\u1ebf th\u1ef1c t\u1ebf, c\u00e1c ph\u01b0\u01a1ng ph\u00e1p v\u1eadt l\u00fd v\u00e0 h\u00f3a h\u1ecdc th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 tinh ch\u1ebf composite. Qu\u1eb7ng th\u00f4 \u2192 x\u1eed l\u00fd b\u1ec1 m\u1eb7t kho\u00e1ng b\u1eb1ng hyposulfit ho\u1eb7c natri dithionite \u2192 x\u1eed l\u00fd bentonit b\u1eb1ng ki\u1ec1m \u1edf nhi\u1ec7t \u0111\u1ed9 l\u1edbn h\u01a1n 60 \u00b0 C \u2192 r\u1eeda s\u1ea1ch b\u1eb1ng n\u01b0\u1edbc kh\u1eed n\u01b0\u1edbc \u00edt nh\u1ea5t m\u1ed9t l\u1ea7n \u2192 l\u00e0m m\u1edbi c\u1ea5u h\u00ecnh huy\u1ec1n ph\u00f9 \u2192 x\u1eed l\u00fd \u0111\u1ed3ng nh\u1ea5t \u2192 l\u00e0m kh\u00f4 \u2192 nghi\u1ec1n \u2192 \u0111\u00f3ng g\u00f3i v\u00e0 v\u1eadn chuy\u1ec3n.<\/p>\n<h4>C\u00f4ng ngh\u1ec7 ch\u1ebf bi\u1ebfn bentonite-s\u1eeda \u0111\u1ed5i<\/h4>\n<p>Bi\u1ebfn \u0111\u1ed5i b\u1ec1 m\u1eb7t c\u1ee7a bentonit l\u00e0 s\u1eed d\u1ee5ng c\u00e1c ph\u01b0\u01a1ng ph\u00e1p v\u1eadt l\u00fd, h\u00f3a h\u1ecdc, c\u01a1 h\u1ecdc v\u00e0 c\u00e1c ph\u01b0\u01a1ng ph\u00e1p kh\u00e1c \u0111\u1ec3 thay \u0111\u1ed5i c\u1ea5u tr\u00fac b\u1ec1 m\u1eb7t, n\u0103ng l\u01b0\u1ee3ng b\u1ec1 m\u1eb7t, t\u00ednh ch\u1ea5t \u0111i\u1ec7n, hi\u1ec7u su\u1ea5t h\u1ea5p ph\u1ee5 v\u00e0 kh\u1ea3 n\u0103ng ph\u1ea3n \u1ee9ng c\u1ee7a bentonit, nh\u1eb1m n\u00e2ng cao gi\u00e1 tr\u1ecb s\u1eed d\u1ee5ng c\u1ee7a bentonit.<\/p>\n<ul>\n<li><strong>K\u00edch ho\u1ea1t c\u01a1 h\u1ecdc<\/strong><\/li>\n<\/ul>\n<p>S\u1ee9c s\u1ed1ng c\u1ee7a l\u1ef1c c\u01a1 h\u1ecdc l\u00e0 qu\u00e1 tr\u00ecnh s\u1eed d\u1ee5ng l\u1ef1c c\u01a1 h\u1ecdc \u0111\u1ec3 c\u1ea3i thi\u1ec7n c\u00e1c ho\u1ea1t \u0111\u1ed9ng v\u00e0 t\u00ednh ch\u1ea5t nh\u1ea5t \u0111\u1ecbnh c\u1ee7a bentonit, bao g\u1ed3m c\u1ea3 qu\u00e1 tr\u00ecnh nghi\u1ec1n th\u00e0nh b\u1ed9t v\u00e0 \u0111\u00f9n si\u00eau m\u1ecbn.<\/p>\n<p>Nghi\u1ec1n si\u00eau m\u1ecbn: \u0110\u1ed9 m\u1ea1nh c\u1ee7a t\u00e1c d\u1ee5ng li\u00ean quan \u0111\u1ebfn th\u1eddi gian nghi\u1ec1n, lo\u1ea1i thi\u1ebft b\u1ecb nghi\u1ec1n, c\u00e1ch t\u00e1c \u0111\u1ed9ng c\u1ee7a l\u1ef1c c\u01a1 h\u1ecdc v\u00e0 m\u00f4i tr\u01b0\u1eddng nghi\u1ec1n.<\/p>\n<p>Hi\u1ec7u \u1ee9ng \u00e9p: hi\u1ec7u \u1ee9ng t\u01b0\u1edbc, hi\u1ec7u \u1ee9ng nhi\u1ec7t \u0111\u1ed9, hi\u1ec7u \u1ee9ng ph\u00e1 v\u1ee1 li\u00ean k\u1ebft.<\/p>\n<ul>\n<li><strong>K\u00edch ho\u1ea1t nhi\u1ec7t<\/strong><\/li>\n<\/ul>\n<p>Nh\u1eefng y\u1ebfu t\u1ed1 n\u00e0o li\u00ean quan \u0111\u1ebfn m\u1ee9c \u0111\u1ed9 ho\u1ea1t h\u00f3a nhi\u1ec7t?<\/p>\n<p>N\u00f3 li\u00ean quan \u0111\u1ebfn th\u1eddi gian thi\u00eau k\u1ebft: n\u00f3i chung, th\u1eddi gian thi\u00eau k\u1ebft l\u00e0 1 gi\u1edd.<\/p>\n<p>N\u00f3 li\u00ean quan \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9 rang: nhi\u1ec7t \u0111\u1ed9 rang l\u00e0 400-450 \u0111\u1ed9 C \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c m\u1ee5c \u0111\u00edch k\u00edch ho\u1ea1t.<\/p>\n<p style=\"text-align: center;\"><strong>D\u1eef li\u1ec7u so s\u00e1nh v\u1ec1 di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t c\u1ee5 th\u1ec3 c\u1ee7a bentonit tr\u01b0\u1edbc v\u00e0 sau khi rang<\/strong><\/p>\n<table>\n<tbody>\n<tr>\n<td width=\"180\">Ch\u1ea5t h\u1ea5p ph\u1ee5<\/td>\n<td width=\"180\">Bentonit t\u1ef1 nhi\u00ean<\/td>\n<td width=\"180\">\u0110\u1ea5t nung 400 \u2103<\/td>\n<td width=\"180\">\u0110\u1ea5t nung 450 \u2103<\/td>\n<td width=\"179\">600 \u2103 \u0111\u1ea5t rang<\/td>\n<td width=\"181\">\u0110\u1ea5t nung 700 \u2103<\/td>\n<\/tr>\n<tr>\n<td width=\"180\">Di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t ri\u00eang (m<sup>2<\/sup>\/g)<\/td>\n<td width=\"180\">310<\/td>\n<td width=\"180\">360<\/td>\n<td width=\"180\">370<\/td>\n<td width=\"179\">86<\/td>\n<td width=\"181\">40<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<ul>\n<li><strong>K\u00edch ho\u1ea1t axit<\/strong><\/li>\n<\/ul>\n<p>Ho\u1ea1t h\u00f3a axit bentonite l\u00e0 vi\u1ec7c s\u1eed d\u1ee5ng c\u00e1c axit kh\u00e1c nhau (axit sulfuric, axit nitric, axit clohydric, axit oxalic) \u0111\u1ec3 ho\u1ea1t h\u00f3a bentonit trong nh\u1eefng \u0111i\u1ec1u ki\u1ec7n nh\u1ea5t \u0111\u1ecbnh v\u1edbi n\u1ed3ng \u0111\u1ed9 kh\u00e1c nhau.<\/p>\n<ul>\n<li><strong>K\u00edch ho\u1ea1t h\u1eefu c\u01a1<\/strong><\/li>\n<\/ul>\n<p>Quy tr\u00ecnh \u01b0\u1edbt: nghi\u1ec1n qu\u1eb7ng th\u00f4 \u2192 nghi\u1ec1n th\u00e0nh b\u1ed9t ph\u00e2n t\u00e1n \u2192 tinh ch\u1ebf \u2192 s\u1eeda \u0111\u1ed5i \u2192 ph\u1ee7 \u2192 l\u1ecdc \u2192 l\u00e0m kh\u00f4 \u2192 nghi\u1ec1n \u2192 \u0111\u00f3ng g\u00f3i s\u1ea3n ph\u1ea9m<\/p>\n<p>Ph\u01b0\u01a1ng ph\u00e1p ti\u1ec1n gel: nghi\u1ec1n qu\u1eb7ng th\u00f4 \u2192 nghi\u1ec1n th\u00e0nh b\u1ed9t ph\u00e2n t\u00e1n \u2192 s\u1eeda \u0111\u1ed5i v\u00e0 tinh ch\u1ebf \u2192 chi\u1ebft xu\u1ea5t n\u01b0\u1edbc \u2192 gia nhi\u1ec7t \u0111\u1ec3 lo\u1ea1i b\u1ecf n\u01b0\u1edbc \u2192 s\u1ea3n ph\u1ea9m s\u01a1 b\u1ed9 gel<\/p>\n<p>Quy tr\u00ecnh kh\u00f4: pin <a class=\"wpil_keyword_link\" href=\"https:\/\/www.alpapowder.com\/projects\/minerals\/\"   title=\"montmorillonite\" data-wpil-keyword-link=\"linked\">montmorillonite<\/a> tinh khi\u1ebft + ch\u1ea5t bao ph\u1ee7 \u2192 gia nhi\u1ec7t v\u00e0 tr\u1ed9n \u2192 \u0111\u00f9n \u2192 s\u1ea5y kh\u00f4 \u2192 nghi\u1ec1n \u2192 \u0111\u00f3ng g\u00f3i<\/p>\n<h4>C\u00f4ng ngh\u1ec7 ch\u1ebf bi\u1ebfn bentonite-bi\u1ebfn t\u00ednh natri<\/h4>\n<p>So v\u1edbi bentonit canxi, bentonit natri c\u00f3 kh\u1ea3 n\u0103ng h\u1ea5p th\u1ee5 n\u01b0\u1edbc v\u00e0 \u1ed5n \u0111\u1ecbnh nhi\u1ec7t cao h\u01a1n, \u0111\u1ed9 d\u1ebbo v\u00e0 t\u00ednh k\u1ebft d\u00ednh m\u1ea1nh h\u01a1n, \u0111\u1ed3ng th\u1eddi t\u00ednh thixotropy v\u00e0 \u0111\u1ed9 b\u00f4i tr\u01a1n c\u1ee7a huy\u1ec1n ph\u00f9 keo t\u1ed1t h\u01a1n. V\u00ec v\u1eady, vi\u1ec7c bi\u1ebfn t\u00ednh natri c\u1ee7a \u0111\u1ea5t tr\u1ed3ng ch\u1eadu b\u1eb1ng canxi l\u00e0 m\u1ed9t trong nh\u1eefng bi\u1ec7n ph\u00e1p h\u1eefu hi\u1ec7u \u0111\u1ec3 n\u00e2ng cao gi\u00e1 tr\u1ecb \u1ee9ng d\u1ee5ng v\u00e0 gi\u00e1 tr\u1ecb kinh t\u1ebf c\u1ee7a n\u00f3.<\/p>\n<ul>\n<li><strong>Nguy\u00ean t\u1eafc natri h\u00f3a<\/strong><\/li>\n<\/ul>\n<p>Qu\u00e1 tr\u00ecnh natri h\u00f3a bentonit ch\u1ee7 y\u1ebfu l\u00e0 s\u1eed d\u1ee5ng Na<sup>+<\/sup> \u0111\u1ec3 thay th\u1ebf cation Ca<sup>2+<\/sup> ho\u1eb7c Mg<sup>2+<\/sup> c\u00f3 th\u1ec3 thay th\u1ebf \u0111\u01b0\u1ee3c gi\u1eefa c\u00e1c l\u1edbp tinh th\u1ec3 bentonit. C\u00f4ng th\u1ee9c ph\u1ea3n \u1ee9ng nh\u01b0 sau: Ca<sup>2+<\/sup> &#8211;<a class=\"wpil_keyword_link\" href=\"https:\/\/www.alpapowder.com\/projects\/minerals\/\"   title=\"montmorillonite\" data-wpil-keyword-link=\"linked\">montmorillonite<\/a> + 2Na<sup>+<\/sup> = 2Na* -montmorillonite + Ca<sup>2+<\/sup><\/p>\n<ul>\n<li><strong>Ph\u01b0\u01a1ng ph\u00e1p natri h\u00f3a<\/strong><\/li>\n<\/ul>\n<p>Bi\u1ebfn \u0111\u1ed5i natri h\u00f3a ch\u1ee7 y\u1ebfu bao g\u1ed3m ph\u01b0\u01a1ng ph\u00e1p huy\u1ec1n ph\u00f9 (ph\u01b0\u01a1ng ph\u00e1p \u01b0\u1edbt), ph\u01b0\u01a1ng ph\u00e1p natri h\u00f3a s\u00e2n (ph\u01b0\u01a1ng ph\u00e1p gi\u00e0 h\u00f3a) v\u00e0 ph\u01b0\u01a1ng ph\u00e1p \u00e9p \u0111\u00f9n, v.v. Nguy\u00ean li\u1ec7u \u2192 ch\u1ecdn tay \u2192 nghi\u1ec1n \u2192 tinh ch\u1ebf \u2192 natri h\u00f3a \u2192 \u0111\u00f9n \u2192 s\u1ea5y kh\u00f4 \u2192 nghi\u1ec1n \u2192 \u0111\u00f3ng g\u00f3i<\/p>\n<p>Sau h\u01a1n 100 n\u0103m nghi\u00ean c\u1ee9u v\u00e0 \u1ee9ng d\u1ee5ng, bentonit v\u00e0 c\u00e1c s\u1ea3n ph\u1ea9m ph\u00e1t tri\u1ec3n s\u00e2u r\u1ed9ng c\u1ee7a n\u00f3 \u0111\u00e3 \u0111\u00f3ng m\u1ed9t vai tr\u00f2 quan tr\u1ecdng trong c\u00e1c l\u0129nh v\u1ef1c s\u1ea3n xu\u1ea5t c\u00f4ng nghi\u1ec7p, n\u00f4ng nghi\u1ec7p v\u00e0 khoa h\u1ecdc. Trong t\u01b0\u01a1ng lai, nghi\u00ean c\u1ee9u v\u1ec1 vi\u1ec7c s\u1eed d\u1ee5ng hi\u1ec7u qu\u1ea3 bentonit c\u1ea7n \u0111\u01b0\u1ee3c t\u0103ng c\u01b0\u1eddng v\u00e0 ph\u00e1t tri\u1ec3n m\u1ea1nh m\u1ebd c\u00e1c s\u1ea3n ph\u1ea9m bentonit ch\u1ea5t l\u01b0\u1ee3ng cao, tinh ch\u1ebf v\u00e0 ti\u00ean ti\u1ebfn, \u0111\u1ed3ng th\u1eddi ph\u00e1t tri\u1ec3n theo h\u01b0\u1edbng s\u1ea3n xu\u1ea5t quy m\u00f4 l\u1edbn v\u00e0 s\u1ea3n xu\u1ea5t h\u00e0ng lo\u1ea1t.<\/p>\n<p>&nbsp;<\/p>\n<p>Ngu\u1ed3n b\u00e0i vi\u1ebft: China Powder Network<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Bentonite l\u00e0 m\u1ed9t lo\u1ea1i \u0111\u00e1 s\u00e9t v\u1edbi th\u00e0nh ph\u1ea7n kho\u00e1ng ch\u1ea5t ch\u00ednh l\u00e0 montmorillonite. N\u00f3 th\u01b0\u1eddng ch\u1ee9a m\u1ed9t l\u01b0\u1ee3ng nh\u1ecf m\u00f9n, cao lanh, zeolit, fenspat, canxit v\u00e0 c\u00e1c kho\u00e1ng ch\u1ea5t kh\u00e1c. Bentonite l\u00e0 t\u00e0i nguy\u00ean kho\u00e1ng phi kim lo\u1ea1i qu\u00fd v\u1edbi h\u01a1n 1.000 c\u00f4ng d\u1ee5ng v\u00e0 \u0111\u01b0\u1ee3c m\u1ec7nh danh l\u00e0 &#8220;v\u1eadt li\u1ec7u v\u1ea1n n\u0103ng&#8221;.<\/p>\n","protected":false},"author":6,"featured_media":83971,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[830],"tags":[1822],"class_list":["post-115217","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry-news","tag-bentonite-vi"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/posts\/115217","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/comments?post=115217"}],"version-history":[{"count":0,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/posts\/115217\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/media\/83971"}],"wp:attachment":[{"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/media?parent=115217"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/categories?post=115217"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/tags?post=115217"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}