{"id":16663,"date":"2026-04-07T03:47:29","date_gmt":"2026-04-07T03:47:29","guid":{"rendered":"https:\/\/www.jet-mills.com\/?p=16663"},"modified":"2026-04-07T03:48:55","modified_gmt":"2026-04-07T03:48:55","slug":"boehmite-powder-for-lithium-battery-separator-coating-jet-milling-process","status":"publish","type":"post","link":"https:\/\/www.jet-mills.com\/vi\/boehmite-powder-for-lithium-battery-separator-coating-jet-milling-process\/","title":{"rendered":"B\u1ed9t Boehmite d\u00f9ng \u0111\u1ec3 ph\u1ee7 m\u00e0ng ng\u0103n pin Lithium: Quy tr\u00ecnh nghi\u1ec1n b\u1eb1ng tia n\u01b0\u1edbc"},"content":{"rendered":"

Boehmite<\/a> (AlO(OH)) \u0111\u00e3 tr\u1edf th\u00e0nh v\u1eadt li\u1ec7u ph\u1ee7 g\u1ed1m ch\u1ee7 \u0111\u1ea1o cho m\u00e0ng ng\u0103n polyolefin trong pin lithium-ion. M\u1ed9t l\u1edbp boehmite d\u00e0y 1-4 micron ph\u1ee7 l\u00ean m\u00e0ng ng\u0103n polyetylen ti\u00eau chu\u1ea9n l\u00e0m t\u0103ng nhi\u1ec7t \u0111\u1ed9 b\u1eaft \u0111\u1ea7u co ng\u00f3t do nhi\u1ec7t t\u1eeb kho\u1ea3ng 130 \u0111\u1ed9 C l\u00ean tr\u00ean 200 \u0111\u1ed9 C. Ch\u00ednh bi\u00ean \u0111\u1ed9 nhi\u1ec7t n\u00e0y l\u00e0 y\u1ebfu t\u1ed1 ph\u00e2n bi\u1ec7t pin b\u1ecb hi\u1ec7n t\u01b0\u1ee3ng qu\u00e1 nhi\u1ec7t (thermal runaway) v\u1edbi pin kh\u00f4ng b\u1ecb hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y. B\u00e0i vi\u1ebft n\u00e0y \u0111\u1ec1 c\u1eadp \u0111\u1ebfn c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt D50 c\u1ea7n thi\u1ebft cho c\u00e1c \u1ee9ng d\u1ee5ng pin kh\u00e1c nhau, c\u00e1ch th\u1ee9c... phay ph\u1ea3n l\u1ef1c<\/a> Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y \u0111\u1ea1t \u0111\u01b0\u1ee3c k\u1ebft qu\u1ea3 nh\u01b0 th\u1ebf n\u00e0o m\u00e0 kh\u00f4ng g\u00e2y \u00f4 nhi\u1ec5m, so s\u00e1nh v\u1edbi ph\u01b0\u01a1ng ph\u00e1p nghi\u1ec1n bi \u0111\u1ec3 s\u1ea3n xu\u1ea5t boehmite, v\u00e0 k\u1ebft qu\u1ea3 x\u1eed l\u00fd th\u1ef1c t\u1ebf tr\u00f4ng ra sao.<\/p>\n\n\n\n

Hi\u1ec7u su\u1ea5t c\u1ee7a l\u1edbp ph\u1ee7 ph\u1ee5 thu\u1ed9c g\u1ea7n nh\u01b0 ho\u00e0n to\u00e0n v\u00e0o k\u00edch th\u01b0\u1edbc h\u1ea1t v\u00e0 \u0111\u1ed9 tinh khi\u1ebft c\u1ee7a b\u1ed9t boehmite. N\u1ebfu D50 qu\u00e1 th\u00f4, l\u1edbp ph\u1ee7 s\u1ebd d\u00e0y, kh\u00f4ng \u0111\u1ec1u v\u00e0 l\u00e0m t\u0103ng \u0111i\u1ec7n tr\u1edf b\u00ean trong. N\u1ebfu t\u1ea1p ch\u1ea5t t\u1eeb t\u00ednh (Fe, Ni, Cr t\u1eeb s\u1ef1 m\u00e0i m\u00f2n c\u1ee7a thi\u1ebft b\u1ecb nghi\u1ec1n) v\u01b0\u1ee3t qu\u00e1 quy \u0111\u1ecbnh, c\u00e1c \u0111o\u1ea1n m\u1ea1ch ng\u1eafn c\u00f3 th\u1ec3 h\u00ecnh th\u00e0nh tr\u00ean b\u1ec1 m\u1eb7t b\u1ed9 ph\u00e2n t\u00e1ch. Vi\u1ec7c \u0111\u1ea1t \u0111\u01b0\u1ee3c D50 ch\u00ednh x\u00e1c \u2014 v\u00e0 \u0111\u1ea1t \u0111\u01b0\u1ee3c \u0111i\u1ec1u \u0111\u00f3 m\u00e0 kh\u00f4ng g\u00e2y \u00f4 nhi\u1ec5m kim lo\u1ea1i \u2014 l\u00e0 \u0111i\u1ec3m m\u00e0 nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a m\u00e1y nghi\u1ec1n tia c\u00f3 \u01b0u th\u1ebf v\u01b0\u1ee3t tr\u1ed9i so v\u1edbi m\u00e1y nghi\u1ec1n bi.<\/p>\n\n\n\n

\"boehmite\"
boehmite<\/figcaption><\/figure>\n\n\n\n

V\u00ec sao Boehmite v\u01b0\u1ee3t tr\u1ed9i h\u01a1n Alumina ti\u00eau chu\u1ea9n v\u1edbi vai tr\u00f2 l\u00e0 l\u1edbp ph\u1ee7 ng\u0103n c\u00e1ch<\/h2>\n\n\n\n

C\u1ea3 boehmite (AlO(OH)) v\u00e0 alumina ti\u00eau chu\u1ea9n (Al2O3) \u0111\u1ec1u l\u00e0 c\u00e1c lo\u1ea1i g\u1ed1m g\u1ed1c nh\u00f4m \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m l\u1edbp ph\u1ee7 m\u00e0ng ng\u0103n. S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa ch\u00fang r\u1ea5t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t v\u00e0 hi\u1ec7u su\u1ea5t.<\/p>\n\n\n\n

T\u00e0i s\u1ea3n<\/strong><\/td>Boehmite AlO(OH)<\/strong><\/td>Nh\u00f4m oxit ti\u00eau chu\u1ea9n Al2O3<\/strong><\/td><\/tr>
\u0110\u1ed9 c\u1ee9ng Mohs<\/td>3-4<\/td>9<\/td><\/tr>
T\u1ef7 tr\u1ecdng ri\u00eang<\/td>~3,0 g\/cm3<\/td>~3,9 g\/cm3<\/td><\/tr>
H\u00e0nh vi nhi\u1ec7t<\/td>Qu\u00e1 tr\u00ecnh kh\u1eed n\u01b0\u1edbc thu nhi\u1ec7t \u1edf nhi\u1ec7t \u0111\u1ed9 tr\u00ean 300 \u0111\u1ed9 C \u2014 h\u1ea5p th\u1ee5 nhi\u1ec7t ch\u1ee7 \u0111\u1ed9ng<\/td>\u1ed4n \u0111\u1ecbnh \u2014 kh\u00f4ng c\u00f3 ph\u1ea3n \u1ee9ng thu nhi\u1ec7t<\/td><\/tr>
\u1ea2nh h\u01b0\u1edfng \u0111\u1ebfn thi\u1ebft b\u1ecb ph\u1ee7<\/td>\u0110\u1ed9 c\u1ee9ng th\u1ea5p h\u01a1n gi\u00fap gi\u1ea3m m\u00e0i m\u00f2n con l\u0103n v\u00e0 dao.<\/td>\u0110\u1ed9 c\u1ee9ng cao g\u00e2y ra s\u1ef1 hao m\u00f2n \u0111\u00e1ng k\u1ec3 cho thi\u1ebft b\u1ecb.<\/td><\/tr>
\u0110\u1ed9 d\u00e0y l\u1edbp ph\u1ee7 c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c<\/td>C\u00f3 th\u1ec3 t\u1ea1o ra l\u1edbp ph\u1ee7 \u0111\u1ed3ng nh\u1ea5t d\u00e0y 1-2 \u00b5m.<\/td>C\u00f3 xu h\u01b0\u1edbng t\u1ea1o ra l\u1edbp ph\u1ee7 d\u00e0y h\u01a1n v\u00e0 k\u00e9m \u0111\u1ed3ng \u0111\u1ec1u h\u01a1n.<\/td><\/tr>
Kh\u1ea3 n\u0103ng th\u1ea5m \u01b0\u1edbt c\u1ee7a ch\u1ea5t \u0111i\u1ec7n gi\u1ea3i<\/td>T\u1ed1t \u2014 b\u1ec1 m\u1eb7t \u01b0a n\u01b0\u1edbc gi\u00fap c\u1ea3i thi\u1ec7n s\u1ef1 v\u1eadn chuy\u1ec3n ion<\/td>\u0110\u1ee7<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\u0110\u1eb7c t\u00ednh kh\u1eed n\u01b0\u1edbc thu nhi\u1ec7t c\u1ee7a boehmite l\u00e0 s\u1ef1 kh\u00e1c bi\u1ec7t ch\u1ee9c n\u0103ng quan tr\u1ecdng nh\u1ea5t. Khi m\u1ed9t t\u1ebf b\u00e0o s\u1eafp \u0111\u1ea1t \u0111\u1ebfn \u0111i\u1ec3m qu\u00e1 nhi\u1ec7t, l\u1edbp ph\u1ee7 boehmite h\u1ea5p th\u1ee5 nhi\u1ec7t khi n\u00f3 ph\u00e2n h\u1ee7y, t\u1ea1o ra m\u1ed9t l\u1edbp \u0111\u1ec7m nhi\u1ec7t c\u00f3 th\u1ec3 t\u1ea1o n\u00ean s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa m\u1ed9t t\u1ebf b\u00e0o ph\u1ee5c h\u1ed3i v\u00e0 m\u1ed9t t\u1ebf b\u00e0o ti\u1ebfp t\u1ee5c ph\u00e1t tri\u1ec3n. C\u01a1 ch\u1ebf n\u00e0y kh\u00f4ng c\u00f3 trong alumina ti\u00eau chu\u1ea9n \u2014 n\u00f3 v\u1eabn \u1ed5n \u0111\u1ecbnh thay v\u00ec ch\u1ee7 \u0111\u1ed9ng h\u1ea5p th\u1ee5 nhi\u1ec7t.<\/p>\n\n\n\n

\u0110\u1ed9 c\u1ee9ng th\u1ea5p h\u01a1n (Mohs 3-4 so v\u1edbi 9) c\u00f3 \u00fd ngh\u0129a quan tr\u1ecdng \u0111\u1ed1i v\u1edbi hi\u1ec7u qu\u1ea3 kinh t\u1ebf s\u1ea3n xu\u1ea5t. M\u1ed9t d\u00e2y chuy\u1ec1n ph\u1ee7 chuy\u1ec3n t\u1eeb Al2O3 sang boehmite th\u01b0\u1eddng c\u00f3 tu\u1ed5i th\u1ecd s\u1eed d\u1ee5ng l\u00e2u h\u01a1n \u0111\u00e1ng k\u1ec3 \u0111\u1ed1i v\u1edbi c\u00e1c con l\u0103n ph\u1ee7, dao c\u1eaft v\u00e0 thi\u1ebft b\u1ecb ph\u00e2n t\u00e1n v\u00ec c\u00e1c h\u1ea1t m\u1ec1m h\u01a1n \u00edt g\u00e2y m\u00e0i m\u00f2n h\u01a1n.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt D50 cho Boehmite theo \u1ee9ng d\u1ee5ng<\/h2>\n\n\n\n

Th\u00f4ng s\u1ed1 k\u00edch th\u01b0\u1edbc h\u1ea1t c\u1ee7a boehmite kh\u00f4ng \u0111\u1ed3ng nh\u1ea5t trong t\u1ea5t c\u1ea3 c\u00e1c \u1ee9ng d\u1ee5ng pin. M\u1ee5c ti\u00eau D50 ph\u1ee5 thu\u1ed9c v\u00e0o \u0111\u1ed9 d\u00e0y l\u1edbp ph\u1ee7 c\u1ea7n thi\u1ebft, ch\u1ea5t n\u1ec1n c\u1ee7a m\u00e0ng ng\u0103n v\u00e0 c\u1ea5p hi\u1ec7u n\u0103ng c\u1ee7a pin.<\/p>\n\n\n\n

\u1ee8ng d\u1ee5ng<\/strong><\/td>M\u1ee5c ti\u00eau D50<\/strong><\/td>D97 T\u1ed1i \u0111a<\/strong><\/td>Y\u1ebfu t\u1ed1 th\u00fac \u0111\u1ea9y hi\u1ec7u su\u1ea5t ch\u00ednh<\/strong><\/td><\/tr>
L\u1edbp ph\u1ee7 m\u00e0ng ng\u0103n EV cao c\u1ea5p<\/td>200-300 nm<\/td><1.000 nm<\/td>L\u1edbp ph\u1ee7 si\u00eau m\u1ecfng, d\u00e0y \u0111\u1eb7c cho m\u1eadt \u0111\u1ed9 n\u0103ng l\u01b0\u1ee3ng t\u1ed1i \u0111a; gi\u1ea3m thi\u1ec3u s\u1ef1 gia t\u0103ng \u0111i\u1ec7n tr\u1edf b\u00ean trong.<\/td><\/tr>
Ph\u00e2n t\u00e1ch xe \u0111i\u1ec7n v\u00e0 h\u1ec7 th\u1ed1ng l\u01b0u tr\u1eef ch\u00ednh th\u1ed1ng<\/td>0,5-1,6 \u00b5m<\/td><4 um<\/td>C\u00e2n b\u1eb1ng gi\u1eefa an to\u00e0n, \u0111\u1ed9 \u0111\u1ed3ng nh\u1ea5t c\u1ee7a l\u1edbp ph\u1ee7 v\u00e0 t\u00ednh nh\u1ea5t qu\u00e1n trong s\u1ea3n xu\u1ea5t.<\/td><\/tr>
L\u1edbp ph\u1ee7 c\u1ea1nh \u0111i\u1ec7n c\u1ef1c<\/td>1,0-6,0 \u00b5m<\/td><15 \u00b5m<\/td>B\u1ea3o v\u1ec7 c\u1ea5u tr\u00fac v\u00e0 c\u00e1ch \u0111i\u1ec7n t\u1ea1i c\u00e1c c\u1ea1nh \u0111i\u1ec7n c\u1ef1c; y\u00eau c\u1ea7u PSD \u00edt kh\u1eaft khe h\u01a1n.<\/td><\/tr>
Nghi\u00ean c\u1ee9u v\u00e0 ph\u00e1t tri\u1ec3n b\u00e1n r\u1eafn\/r\u1eafn<\/td>100-400 nm<\/td><1.000 nm<\/td>K\u00edch th\u01b0\u1edbc h\u1ea1t r\u1ea5t nh\u1ecf, th\u00edch h\u1ee3p cho c\u00e1c l\u1edbp ph\u1ee7 m\u1eadt \u0111\u1ed9 cao trong th\u00ed nghi\u1ec7m; \u0111\u1ed9 tinh khi\u1ebft l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Xu h\u01b0\u1edbng trong ng\u00e0nh c\u00f4ng nghi\u1ec7p hi\u1ec7n nay l\u00e0 h\u01b0\u1edbng t\u1edbi c\u00e1c lo\u1ea1i D50 m\u1ecbn h\u01a1n. Boehmite si\u00eau nh\u1ecf (D50 d\u01b0\u1edbi 500 nm) cho ph\u00e9p t\u1ea1o ra c\u00e1c l\u1edbp ph\u1ee7 m\u1ecfng h\u01a1n, l\u00e0m gi\u1ea3m tr\u1ecdng l\u01b0\u1ee3ng v\u00e0 \u0111i\u1ec7n tr\u1edf c\u1ee7a m\u00e0ng ng\u0103n, t\u1eeb \u0111\u00f3 t\u0103ng m\u1eadt \u0111\u1ed9 n\u0103ng l\u01b0\u1ee3ng c\u1ee7a pin \u1edf c\u1ea5p \u0111\u1ed9 c\u1ee5m pin. \u0110\u00e2y l\u00e0 c\u1ea5p \u0111\u1ed9 th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt m\u00e0 kh\u1ea3 n\u0103ng c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p nghi\u1ec1n b\u1eb1ng tia kh\u00ed \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c D50 si\u00eau nh\u1ecf m\u00e0 kh\u00f4ng l\u00e0m nhi\u1ec5m b\u1ea9n v\u1eadt li\u1ec7u nghi\u1ec1n l\u00e0 quan tr\u1ecdng nh\u1ea5t \u2014 ph\u01b0\u01a1ng ph\u00e1p nghi\u1ec1n bi ng\u00e0y c\u00e0ng tr\u1edf n\u00ean kh\u00f4ng kh\u1ea3 thi \u0111\u1ed1i v\u1edbi D50 d\u01b0\u1edbi 1 micron \u0111\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng pin c\u00f3 \u0111\u1ed9 tinh khi\u1ebft cao.<\/p>\n\n\n\n

V\u00ec sao c\u00f4ng ngh\u1ec7 nghi\u1ec1n b\u1eb1ng tia n\u01b0\u1edbc l\u00e0 l\u1ef1a ch\u1ecdn ph\u00f9 h\u1ee3p cho qu\u1eb7ng Boehmite?<\/h2>\n\n\n\n
\"M\u00e1y<\/figure>\n\n\n\n

V\u1ea5n \u0111\u1ec1 \u00f4 nhi\u1ec5m trong qu\u00e1 tr\u00ecnh nghi\u1ec1n bi<\/h3>\n\n\n\n

Th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt d\u00e0nh cho pin c\u1ee7a Boehmite y\u00eau c\u1ea7u c\u00e1c t\u1ea1p ch\u1ea5t t\u1eeb t\u00ednh (MFM) \u2014 t\u1ed5ng l\u01b0\u1ee3ng Fe, Ni, Cr v\u00e0 c\u00e1c h\u1ea1t s\u1eaft t\u1eeb kh\u00e1c \u2014 ph\u1ea3i n\u1eb1m d\u01b0\u1edbi c\u00e1c gi\u1edbi h\u1ea1n nghi\u00eam ng\u1eb7t: th\u00f4ng th\u01b0\u1eddng d\u01b0\u1edbi 50 ppm \u0111\u1ed1i v\u1edbi c\u00e1c lo\u1ea1i m\u00e0ng ng\u0103n th\u00f4ng d\u1ee5ng v\u00e0 d\u01b0\u1edbi 10 ppm \u0111\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng xe \u0111i\u1ec7n cao c\u1ea5p. C\u00e1c gi\u1edbi h\u1ea1n n\u00e0y t\u1ed3n t\u1ea1i v\u00ec c\u00e1c h\u1ea1t t\u1eeb t\u00ednh tr\u00ean b\u1ec1 m\u1eb7t m\u00e0ng ng\u0103n c\u00f3 th\u1ec3 di chuy\u1ec3n d\u01b0\u1edbi t\u00e1c \u0111\u1ed9ng c\u1ee7a \u0111i\u1ec7n tr\u01b0\u1eddng b\u00ean trong pin v\u00e0 t\u1ea1o ra hi\u1ec7n t\u01b0\u1ee3ng \u0111o\u1ea3n m\u1ea1ch nh\u1ecf.<\/p>\n\n\n\n

M\u00e1y nghi\u1ec1n bi x\u1eed l\u00fd boehmite v\u1edbi m\u00f4i tr\u01b0\u1eddng nghi\u1ec1n b\u1eb1ng alumina ho\u1eb7c zirconia g\u00e2y \u00f4 nhi\u1ec5m theo hai con \u0111\u01b0\u1eddng. Th\u1ee9 nh\u1ea5t, m\u00e0i m\u00f2n tr\u1ef1c ti\u1ebfp m\u00f4i tr\u01b0\u1eddng nghi\u1ec1n: c\u00e1c h\u1ea1t m\u00f4i tr\u01b0\u1eddng nghi\u1ec1n b\u1ecb v\u1ee1 v\u1ee5n, \u0111\u01b0a c\u00e1c m\u1ea3nh Al2O3 ho\u1eb7c ZrO2 v\u00e0o s\u1ea3n ph\u1ea9m. Th\u1ee9 hai, m\u00e0i m\u00f2n l\u1edbp l\u00f3t: l\u1edbp l\u00f3t m\u00e1y nghi\u1ec1n gi\u1ea3i ph\u00f3ng kim lo\u1ea1i v\u1edbi t\u1ed1c \u0111\u1ed9 c\u00f3 th\u1ec3 \u0111o \u0111\u01b0\u1ee3c ngay c\u1ea3 khi c\u00f3 l\u1edbp l\u00f3t g\u1ed1m, b\u1edfi v\u00ec h\u1ed7n h\u1ee3p boehmite c\u1ed9ng v\u1edbi m\u00f4i tr\u01b0\u1eddng nghi\u1ec1n c\u00f3 t\u00ednh m\u00e0i m\u00f2n \u0111\u1ed1i v\u1edbi b\u1ea5t k\u1ef3 b\u1ec1 m\u1eb7t n\u00e0o trong qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t. N\u1ed3ng \u0111\u1ed9 MFM \u0111o \u0111\u01b0\u1ee3c t\u1eeb m\u00e1y nghi\u1ec1n bi s\u1ea3n xu\u1ea5t boehmite D50 1-2 micron th\u01b0\u1eddng l\u00e0 30-150 ppm t\u00f9y thu\u1ed9c v\u00e0o ch\u1ea5t l\u01b0\u1ee3ng m\u00f4i tr\u01b0\u1eddng nghi\u1ec1n v\u00e0 c\u01b0\u1eddng \u0111\u1ed9 nghi\u1ec1n \u2014 \u1edf m\u1ee9c ranh gi\u1edbi ho\u1eb7c cao h\u01a1n so v\u1edbi th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ee7a m\u00e1y t\u00e1ch th\u00f4ng th\u01b0\u1eddng, v\u00e0 cao h\u01a1n nhi\u1ec1u so v\u1edbi th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt cao c\u1ea5p.<\/p>\n\n\n\n

C\u00e1ch th\u1ee9c phay tia n\u01b0\u1edbc lo\u1ea1i b\u1ecf con \u0111\u01b0\u1eddng n\u00e0y<\/h3>\n\n\n\n

Trong m\u00e1y nghi\u1ec1n kh\u00ed n\u00e9n t\u1ea7ng s\u00f4i, vi\u1ec7c gi\u1ea3m k\u00edch th\u01b0\u1edbc h\u1ea1t \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n ho\u00e0n to\u00e0n b\u1eb1ng va ch\u1ea1m gi\u1eefa c\u00e1c h\u1ea1t. C\u00e1c lu\u1ed3ng kh\u00ed n\u00e9n t\u0103ng t\u1ed1c c\u00e1c h\u1ea1t boehmite th\u00e0nh c\u00e1c d\u00f2ng h\u1ed9i t\u1ee5; c\u00e1c h\u1ea1t b\u1ecb v\u1ee1 do va ch\u1ea1m v\u1edbi nhau \u1edf t\u1ed1c \u0111\u1ed9 cao. C\u00e1c b\u1ec1 m\u1eb7t r\u1eafn duy nh\u1ea5t trong \u0111\u01b0\u1eddng ti\u1ebfp x\u00fac c\u1ee7a s\u1ea3n ph\u1ea9m l\u00e0 th\u00e0nh bu\u1ed3ng v\u00e0 b\u00e1nh xe ph\u00e2n lo\u1ea1i, c\u1ea3 hai \u0111\u1ec1u c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c l\u00f3t g\u1ed1m. Kh\u00f4ng c\u00f3 v\u1eadt li\u1ec7u nghi\u1ec1n. S\u1ef1 nhi\u1ec5m b\u1ea9n kim lo\u1ea1i t\u1eeb ch\u00ednh b\u01b0\u1edbc nghi\u1ec1n g\u1ea7n nh\u01b0 b\u1eb1ng kh\u00f4ng.<\/p>\n\n\n\n

\u0110\u1ed1i v\u1edbi y\u00eau c\u1ea7u v\u1ec1 t\u1ea1p ch\u1ea5t t\u1eeb t\u00ednh, ph\u01b0\u01a1ng ph\u00e1p nghi\u1ec1n b\u1eb1ng tia kh\u00ed chuy\u1ec3n th\u00e1ch th\u1ee9c ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng t\u1eeb b\u01b0\u1edbc nghi\u1ec1n sang kh\u00e2u t\u1ed5ng h\u1ee3p \u1edf giai \u0111o\u1ea1n \u0111\u1ea7u v\u00e0 h\u1ec7 th\u1ed1ng thu gom \u1edf giai \u0111o\u1ea1n cu\u1ed1i \u2014 c\u1ea3 hai giai \u0111o\u1ea1n n\u00e0y \u0111\u1ec1u d\u1ec5 ki\u1ec3m so\u00e1t h\u01a1n. B\u1ed9 t\u00e1ch t\u1eeb c\u00f3 \u0111\u1ed9 d\u1ed1c cao (HGMS) \u0111\u01b0\u1ee3c \u0111\u1eb7t sau m\u00e1y nghi\u1ec1n b\u1eb1ng tia kh\u00ed \u0111\u00f3ng vai tr\u00f2 l\u00e0 c\u1ed5ng ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng cu\u1ed1i c\u00f9ng, gi\u00fap thu gi\u1eef b\u1ea5t k\u1ef3 h\u1ea1t t\u1eeb t\u00ednh c\u00f2n s\u00f3t l\u1ea1i n\u00e0o t\u1eeb giai \u0111o\u1ea1n t\u1ed5ng h\u1ee3p, t\u1ea1o ra s\u1ea3n ph\u1ea9m cu\u1ed1i c\u00f9ng v\u1edbi h\u00e0m l\u01b0\u1ee3ng t\u1ea1p ch\u1ea5t t\u1eeb t\u00ednh (MFM) lu\u00f4n \u1edf m\u1ee9c d\u01b0\u1edbi 5-10 ppm.<\/p>\n\n\n\n

V\u1eadt li\u1ec7u si\u00eau nh\u1ecf D50: N\u01a1i m\u00e0 c\u00f4ng ngh\u1ec7 phay tia n\u01b0\u1edbc v\u01b0\u1ee3t tr\u1ed9i h\u01a1n h\u1eb3n.<\/h3>\n\n\n\n

\u1ede k\u00edch th\u01b0\u1edbc d\u01b0\u1edbi D50 500 nm, vi\u1ec7c nghi\u1ec1n bi \u0111\u1ed1i v\u1edbi boehmite tr\u1edf n\u00ean kh\u00f4ng kh\u1ea3 thi. V\u1eadt li\u1ec7u nghi\u1ec1n c\u1ea7n thi\u1ebft \u0111\u1ec3 x\u1eed l\u00fd hi\u1ec7u qu\u1ea3 c\u00e1c h\u1ea1t trong ph\u1ea1m vi k\u00edch th\u01b0\u1edbc n\u00e0y ph\u1ea3i l\u00e0 c\u00e1c h\u1ea1t si\u00eau nh\u1ecf (th\u01b0\u1eddng l\u00e0 c\u00e1c h\u1ea1t 0,1-0,3 mm cho qu\u00e1 tr\u00ecnh nghi\u1ec1n nano), d\u1ec5 b\u1ecb v\u1ee1 v\u00e0 g\u00e2y \u00f4 nhi\u1ec5m v\u1edbi t\u1ed1c \u0111\u1ed9 v\u01b0\u1ee3t qu\u00e1 th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt pin cao c\u1ea5p. C\u1ea7n th\u1eddi gian nghi\u1ec1n k\u00e9o d\u00e0i (8-16 gi\u1edd) \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c D50 300 nm, \u0111i\u1ec1u n\u00e0y c\u0169ng l\u00e0m t\u0103ng nguy c\u01a1 \u00f4 nhi\u1ec5m v\u00e0 chi ph\u00ed x\u1eed l\u00fd.<\/p>\n\n\n\n

M\u00e1y nghi\u1ec1n phun t\u1ea7ng s\u00f4i \u0111\u1ea1t \u0111\u01b0\u1ee3c k\u00edch th\u01b0\u1edbc h\u1ea1t D50 t\u1eeb 300-500 nm tr\u00ean boehmite ch\u1ec9 trong m\u1ed9t l\u1ea7n nghi\u1ec1n \u1edf \u00e1p su\u1ea5t 6-8 bar, v\u1edbi th\u1eddi gian x\u1eed l\u00fd t\u00ednh b\u1eb1ng ph\u00fat thay v\u00ec gi\u1edd. T\u1ed1c \u0111\u1ed9 b\u00e1nh xe ph\u00e2n lo\u1ea1i \u0111i\u1ec1u khi\u1ec3n \u0111i\u1ec3m c\u1eaft D50; gi\u1ea3m t\u1ed1c \u0111\u1ed9 ph\u00e2n lo\u1ea1i s\u1ebd t\u1ea1o ra s\u1ea3n ph\u1ea9m m\u1ecbn h\u01a1n. Ch\u00ednh s\u1ef1 k\u1ebft h\u1ee3p gi\u1eefa t\u1ed1c \u0111\u1ed9, \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 quy tr\u00ecnh x\u1eed l\u00fd kh\u00f4ng b\u1ecb nhi\u1ec5m b\u1ea9n \u0111\u00e3 l\u00e0m cho ph\u01b0\u01a1ng ph\u00e1p nghi\u1ec1n phun tr\u1edf th\u00e0nh c\u00f4ng ngh\u1ec7 ti\u00eau chu\u1ea9n cho s\u1ea3n xu\u1ea5t boehmite cao c\u1ea5p.<\/p>\n\n\n\n

Nh\u00e2n t\u1ed1<\/strong><\/td>M\u00e1y nghi\u1ec1n tia n\u01b0\u1edbc (gi\u01b0\u1eddng t\u1ea7ng s\u00f4i)<\/strong><\/td>M\u00e1y nghi\u1ec1n bi (v\u1eadt li\u1ec7u g\u1ed1m)<\/strong><\/td><\/tr>
Ph\u1ea1m vi D50 c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c<\/td>100 nm \u2013 45 \u00b5m<\/td>500 nm \u2013 20 \u00b5m (ph\u00f9 h\u1ee3p v\u1edbi boehmite)<\/td><\/tr>
Kh\u1ea3 n\u0103ng d\u01b0\u1edbi 500 nm<\/td>\u0110\u00fang v\u1eady \u2014 ti\u00eau chu\u1ea9n cho m\u00e1y nghi\u1ec1n ph\u1ea3n l\u1ef1c<\/td>Kh\u00f4ng kh\u1ea3 thi \u1edf quy m\u00f4 s\u1ea3n xu\u1ea5t cho pin.<\/td><\/tr>
V\u1eadt ch\u1ea5t l\u1ea1 t\u1eeb t\u00ednh<\/td>G\u1ea7n b\u1eb1ng kh\u00f4ng t\u1eeb b\u01b0\u1edbc m\u00e0i<\/td>Th\u00f4ng th\u01b0\u1eddng t\u1eeb 30-150 ppm; t\u00f9y thu\u1ed9c v\u00e0o m\u00f4i tr\u01b0\u1eddng nu\u00f4i c\u1ea5y.<\/td><\/tr>
Th\u1eddi gian x\u1eed l\u00fd (D50 300 nm)<\/td>15-45 ph\u00fat<\/td>8-16 gi\u1edd<\/td><\/tr>
N\u01b0\u1edbc tinh th\u1ec3 Boehmite<\/td>\u0110\u01b0\u1ee3c b\u1ea3o qu\u1ea3n (kh\u00f4ng b\u1ecb n\u00f3ng l\u00ean do ma s\u00e1t gi\u1eefa c\u00e1c v\u1eadt li\u1ec7u)<\/td>Nguy c\u01a1 m\u1ea5t n\u01b0\u1edbc m\u1ed9t ph\u1ea7n khi xay \u01b0\u1edbt k\u00e9o d\u00e0i.<\/td><\/tr>
T\u00f9y ch\u1ecdn b\u1ea7u kh\u00ed quy\u1ec3n nit\u01a1<\/td>T\u00f9y ch\u1ecdn ti\u00eau chu\u1ea9n cho m\u00e1y nghi\u1ec1n tia n\u01b0\u1edbc<\/td>Ph\u1ee9c t\u1ea1p v\u00e0 t\u1ed1n k\u00e9m \u0111\u1ed1i v\u1edbi m\u00e1y nghi\u1ec1n bi.<\/td><\/tr>
Chi ph\u00ed n\u0103ng l\u01b0\u1ee3ng tr\u00ean m\u1ed7i t\u1ea5n<\/td>Cao h\u01a1n (kh\u00ed n\u00e9n)<\/td>Th\u1ea5p h\u01a1n \u1edf m\u1ee9c D50 t\u01b0\u01a1ng \u0111\u01b0\u01a1ng > 2 \u00b5m<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

D\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t Boehmite ho\u00e0n ch\u1ec9nh<\/h3>\n\n\n\n

M\u00e1y nghi\u1ec1n kh\u00ed n\u00e9n l\u00e0 c\u1ed1t l\u00f5i c\u1ee7a giai \u0111o\u1ea1n x\u1eed l\u00fd boehmite, nh\u01b0ng d\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t ho\u00e0n ch\u1ec9nh cho boehmite d\u00f9ng trong pin bao g\u1ed3m nhi\u1ec1u b\u01b0\u1edbc \u1edf kh\u00e2u tr\u01b0\u1edbc v\u00e0 sau \u0111\u00f3:<\/p>\n\n\n\n

Tr\u00ecnh t\u1ef1 thi\u1ebft b\u1ecb tr\u00ean d\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t Boehmite
\u2022 T\u1ed5ng h\u1ee3p: L\u00f2 ph\u1ea3n \u1ee9ng \u2014 t\u1ea1o ra k\u1ebft t\u1ee7a AlO(OH) t\u1eeb ti\u1ec1n ch\u1ea5t nh\u00f4m alkoxide ho\u1eb7c mu\u1ed1i nh\u00f4m
\u2022 T\u00e1ch chi\u1ebft: M\u00e1y \u00e9p l\u1ecdc \u2014 lo\u1ea1i b\u1ecf ph\u1ea7n l\u1edbn dung d\u1ecbch ph\u1ea3n \u1ee9ng kh\u1ecfi b\u00e3 boehmite.
\u2022 S\u1ea5y kh\u00f4: S\u1ea5y b\u1eb1ng m\u00e1y s\u1ea5y phun ho\u1eb7c s\u1ea5y b\u1eb1ng l\u00f2 n\u01b0\u1edbng \u2014 gi\u1ea3m \u0111\u1ed9 \u1ea9m xu\u1ed1ng d\u01b0\u1edbi 0,5% \u0111\u1ec3 nghi\u1ec1n kh\u00f4 b\u1eb1ng m\u00e1y nghi\u1ec1n tia.
\u2022 Nghi\u1ec1n l\u00f5i: M\u00e1y nghi\u1ec1n phun t\u1ea7ng s\u00f4i (B\u1ed9t EPIC<\/a>) \u2014 \u0111\u1ea1t m\u1ee5c ti\u00eau D50 v\u1edbi qu\u00e1 tr\u00ecnh nghi\u1ec1n h\u1ea1t tr\u00ean h\u1ea1t kh\u00f4ng b\u1ecb nhi\u1ec5m b\u1ea9n
\u2022 Ph\u00e2n lo\u1ea1i: M\u00e1y ph\u00e2n lo\u1ea1i kh\u00ed \u2014 ki\u1ec3m so\u00e1t D97 th\u1ee9 c\u1ea5p cho c\u00e1c lo\u1ea1i h\u1ea1t m\u1ecbn nh\u1ea5t (t\u00f9y ch\u1ecdn cho c\u00e1c lo\u1ea1i h\u1ea1t ti\u00eau chu\u1ea9n khi m\u00e1y ph\u00e2n lo\u1ea1i b\u1eb1ng m\u00e1y nghi\u1ec1n kh\u00ed l\u00e0 \u0111\u1ee7)
\u2022 T\u00e1ch t\u1eeb: M\u00e1y t\u00e1ch t\u1eeb c\u00f3 \u0111\u1ed9 d\u1ed1c cao (HGMS), 10.000-15.000 Gauss \u2014 lo\u1ea1i b\u1ecf c\u00e1c h\u1ea1t t\u1eeb t\u00ednh c\u00f2n s\u00f3t l\u1ea1i t\u1eeb qu\u00e1 tr\u00ecnh t\u1ed5ng h\u1ee3p
B\u1ed9 l\u1ecdc: T\u00fai l\u1ecdc xung \u2013 thu gom s\u1ea3n ph\u1ea9m v\u00e0 th\u1ea3i kh\u00ed s\u1ea1ch.<\/p>\n\n\n\n

Quy tr\u00ecnh ch\u1ebf bi\u1ebfn b\u1ed9t Boehmite ho\u1eb7c Alumina cho \u1ee9ng d\u1ee5ng pin?<\/strong>
M\u00e1y nghi\u1ec1n t\u1ea7ng s\u00f4i c\u1ee7a EPIC Powder Machinery \u0111\u01b0\u1ee3c c\u1ea5u h\u00ecnh cho boehmite, alumina v\u00e0 c\u00e1c lo\u1ea1i b\u1ed9t g\u1ed1m d\u00f9ng trong pin kh\u00e1c. Ch\u00fang t\u00f4i cung c\u1ea5p d\u1ecbch v\u1ee5 nghi\u1ec1n th\u1eed mi\u1ec5n ph\u00ed \u2014 b\u1ea1n ch\u1ec9 c\u1ea7n cung c\u1ea5p nguy\u00ean li\u1ec7u boehmite, th\u00f4ng s\u1ed1 D50 v\u00e0 t\u1ea1p ch\u1ea5t t\u1eeb t\u00ednh, v\u00e0 ch\u00fang t\u00f4i s\u1ebd tr\u1ea3 v\u1ec1 d\u1eef li\u1ec7u PSD \u0111\u1ea7y \u0111\u1ee7, ph\u00e2n t\u00edch ICP v\u1ec1 Fe v\u00e0 t\u1ea1p ch\u1ea5t t\u1eeb t\u00ednh, c\u00f9ng c\u1ea5u h\u00ecnh quy tr\u00ecnh \u0111\u01b0\u1ee3c \u0111\u1ec1 xu\u1ea5t. H\u00e3y cho ch\u00fang t\u00f4i bi\u1ebft D50 m\u1ee5c ti\u00eau c\u1ee7a b\u1ea1n (ph\u1ea1m vi d\u01b0\u1edbi micron ho\u1eb7c micron), kh\u1ed1i l\u01b0\u1ee3ng s\u1ea3n xu\u1ea5t h\u00e0ng n\u0103m v\u00e0 li\u1ec7u c\u00f3 c\u1ea7n m\u00f4i tr\u01b0\u1eddng nit\u01a1 hay kh\u00f4ng.\u00a0\u00a0<\/strong>
Y\u00eau c\u1ea7u xay th\u1eed mi\u1ec5n ph\u00ed: www.jet-mills.com\/contact\u00a0\u00a0<\/strong>
Kh\u00e1m ph\u00e1 d\u00f2ng s\u1ea3n ph\u1ea9m m\u00e1y nghi\u1ec1n phun kh\u00ed n\u00e9n d\u00f9ng cho v\u1eadt li\u1ec7u pin c\u1ee7a ch\u00fang t\u00f4i: www.jet-mills.com<\/strong><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/h2>\n\n\n\n

T\u1ea1i sao boehmite l\u1ea1i \u0111\u01b0\u1ee3c \u01b0a chu\u1ed9ng h\u01a1n alumina ti\u00eau chu\u1ea9n \u0111\u1ec3 ph\u1ee7 l\u1edbp m\u00e0ng ng\u0103n c\u00e1ch pin lithium?<\/h3>\n\n\n\n

Hai v\u1eadt li\u1ec7u n\u00e0y kh\u00e1c nhau v\u1ec1 \u0111\u1ed9 c\u1ee9ng, m\u1eadt \u0111\u1ed9 v\u00e0 t\u00ednh ch\u1ea5t nhi\u1ec7t \u2014 t\u1ea5t c\u1ea3 \u0111\u1ec1u \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn qu\u00e1 tr\u00ecnh ph\u1ee7 v\u00e0 hi\u1ec7u su\u1ea5t an to\u00e0n c\u1ee7a pin. Boehmite (Mohs 3-4) m\u1ec1m h\u01a1n \u0111\u00e1ng k\u1ec3 so v\u1edbi alumina ti\u00eau chu\u1ea9n (Mohs 9), \u0111i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 n\u00f3 g\u00e2y ra \u00edt m\u00e0i m\u00f2n h\u01a1n \u0111\u00e1ng k\u1ec3 \u0111\u1ed1i v\u1edbi c\u00e1c con l\u0103n ph\u1ee7, dao c\u1eaft v\u00e0 thi\u1ebft b\u1ecb ph\u00e2n t\u00e1n trong d\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t m\u00e0ng ng\u0103n. M\u1eadt \u0111\u1ed9 th\u1ea5p h\u01a1n c\u1ee7a boehmite (kho\u1ea3ng 3,0 g\/cm\u00b3 so v\u1edbi 3,9 g\/cm\u00b3 c\u1ee7a alumina) c\u00f3 ngh\u0129a l\u00e0 l\u1edbp ph\u1ee7 m\u1ecfng h\u01a1n, nh\u1eb9 h\u01a1n v\u1edbi hi\u1ec7u su\u1ea5t b\u1ea3o v\u1ec7 t\u01b0\u01a1ng \u0111\u01b0\u01a1ng. S\u1ef1 kh\u00e1c bi\u1ec7t ch\u1ee9c n\u0103ng quan tr\u1ecdng nh\u1ea5t l\u00e0 v\u1ec1 nhi\u1ec7t: boehmite tr\u1ea3i qua qu\u00e1 tr\u00ecnh kh\u1eed n\u01b0\u1edbc thu nhi\u1ec7t tr\u00ean 300 \u0111\u1ed9 C (AlO(OH) gi\u1ea3i ph\u00f3ng n\u01b0\u1edbc c\u1ea5u tr\u00fac c\u1ee7a n\u00f3 d\u01b0\u1edbi d\u1ea1ng h\u01a1i n\u01b0\u1edbc), ch\u1ea5t n\u00e0y h\u1ea5p th\u1ee5 nhi\u1ec7t m\u1ed9t c\u00e1ch ch\u1ee7 \u0111\u1ed9ng trong tr\u01b0\u1eddng h\u1ee3p qu\u00e1 nhi\u1ec7t. Alumina ti\u00eau chu\u1ea9n \u1ed5n \u0111\u1ecbnh v\u1ec1 nhi\u1ec7t v\u00e0 kh\u00f4ng cung c\u1ea5p c\u01a1 ch\u1ebf h\u1ea5p th\u1ee5 nhi\u1ec7t ch\u1ee7 \u0111\u1ed9ng n\u00e0y. \u0110\u1ed1i v\u1edbi c\u00e1c t\u1ebf b\u00e0o pin m\u00e0 vi\u1ec7c qu\u1ea3n l\u00fd nhi\u1ec7t l\u00e0 m\u1ed1i quan t\u00e2m an to\u00e0n h\u00e0ng \u0111\u1ea7u, t\u00ednh ch\u1ea5t thu nhi\u1ec7t c\u1ee7a boehmite cung c\u1ea5p th\u00eam m\u1ed9t bi\u00ean \u0111\u1ed9 an to\u00e0n \u0111\u00e1ng k\u1ec3.<\/p>\n\n\n\n

T\u00f4i n\u00ean ch\u1ec9 \u0111\u1ecbnh gi\u00e1 tr\u1ecb D50 n\u00e0o cho boehmite khi ph\u1ee7 l\u00ean m\u00e0ng ng\u0103n pin xe \u0111i\u1ec7n?<\/h3>\n\n\n\n

Th\u00f4ng s\u1ed1 D50 ph\u1ee5 thu\u1ed9c v\u00e0o lo\u1ea1i pin v\u00e0 \u0111\u1ed9 d\u00e0y l\u1edbp ph\u1ee7 m\u1ee5c ti\u00eau. \u0110\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng xe \u0111i\u1ec7n v\u00e0 l\u01b0u tr\u1eef n\u0103ng l\u01b0\u1ee3ng th\u00f4ng th\u01b0\u1eddng s\u1eed d\u1ee5ng m\u00e0ng ng\u0103n polyethylene ho\u1eb7c polypropylene ti\u00eau chu\u1ea9n, D50 0,5-1,6 micron l\u00e0 ph\u1ea1m vi th\u01b0\u01a1ng m\u1ea1i ti\u00eau chu\u1ea9n. \u1ede k\u00edch th\u01b0\u1edbc n\u00e0y, c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c l\u1edbp ph\u1ee7 \u0111\u1ed3ng nh\u1ea5t 2-4 micron b\u1eb1ng c\u00e1c quy tr\u00ecnh ph\u1ee7 khe ho\u1eb7c in \u1ed1ng \u0111\u1ed3ng ti\u00eau chu\u1ea9n. \u0110\u1ed1i v\u1edbi c\u00e1c pin m\u1eadt \u0111\u1ed9 n\u0103ng l\u01b0\u1ee3ng cao trong c\u00e1c \u1ee9ng d\u1ee5ng xe \u0111i\u1ec7n cao c\u1ea5p, n\u01a1i \u01b0u ti\u00ean gi\u1ea3m thi\u1ec3u tr\u1ecdng l\u01b0\u1ee3ng l\u1edbp ph\u1ee7 v\u00e0 \u0111i\u1ec7n tr\u1edf trong, boehmite d\u01b0\u1edbi micron \u1edf D50 200-400 nm cho ph\u00e9p t\u1ea1o ra c\u00e1c l\u1edbp ph\u1ee7 m\u1ecfng h\u01a1n (1-2 micron) v\u1edbi m\u1eadt \u0111\u1ed9 t\u1ed1t h\u01a1n. \u0110\u1ed1i v\u1edbi l\u1edbp ph\u1ee7 c\u1ea1nh \u0111i\u1ec7n c\u1ef1c (m\u1ed9t \u1ee9ng d\u1ee5ng kh\u00e1c v\u1edbi l\u1edbp ph\u1ee7 b\u1ec1 m\u1eb7t m\u00e0ng ng\u0103n), D50 1-6 micron l\u00e0 \u0111i\u1ec3n h\u00ecnh, v\u1edbi c\u00e1c y\u00eau c\u1ea7u v\u1ec1 ph\u00e2n b\u1ed1 k\u00edch th\u01b0\u1edbc h\u1ea1t (PSD) \u00edt nghi\u00eam ng\u1eb7t h\u01a1n. Trong m\u1ecdi tr\u01b0\u1eddng h\u1ee3p, D97 v\u00e0 vi\u1ec7c kh\u00f4ng c\u00f3 ph\u1ea7n \u0111u\u00f4i th\u00f4 (c\u00e1c h\u1ea1t tr\u00ean 10-15 micron) c\u0169ng quan tr\u1ecdng nh\u01b0 D50 \u2014 c\u00e1c h\u1ea1t qu\u00e1 kh\u1ed5 t\u1ea1o ra c\u00e1c khuy\u1ebft t\u1eadt l\u1edbp ph\u1ee7 l\u00e0m gi\u1ea3m kh\u1ea3 n\u0103ng ch\u1ed1ng th\u1ee7ng c\u1ee7a m\u00e0ng ng\u0103n.<\/p>\n\n\n\n

M\u00e1y nghi\u1ec1n bi c\u00f3 th\u1ec3 s\u1ea3n xu\u1ea5t boehmite \u0111\u1ea1t ti\u00eau chu\u1ea9n pin kh\u00f4ng, v\u00e0 khi n\u00e0o th\u00ec t\u00f4i n\u00ean c\u00e2n nh\u1eafc chuy\u1ec3n sang m\u00e1y nghi\u1ec1n kh\u00ed n\u00e9n?<\/h3>\n\n\n\n

M\u00e1y nghi\u1ec1n bi c\u00f3 th\u1ec3 s\u1ea3n xu\u1ea5t boehmite v\u1edbi k\u00edch th\u01b0\u1edbc h\u1ea1t D50 t\u1eeb 1-5 micron \u1edf t\u1ed1c \u0111\u1ed9 ph\u00f9 h\u1ee3p cho s\u1ea3n xu\u1ea5t quy m\u00f4 nh\u1ecf, nh\u01b0ng hai h\u1ea1n ch\u1ebf tr\u1edf n\u00ean \u0111\u00e1ng k\u1ec3 \u0111\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng c\u1ea5p pin. Th\u1ee9 nh\u1ea5t, t\u1ea1p ch\u1ea5t t\u1eeb t\u00ednh: ngay c\u1ea3 v\u1eadt li\u1ec7u g\u1ed1m ch\u1ea5t l\u01b0\u1ee3ng cao c\u0169ng g\u00e2y ra \u00f4 nhi\u1ec5m c\u00f3 th\u1ec3 \u0111o \u0111\u01b0\u1ee3c do m\u00e0i m\u00f2n. \u0110\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng ph\u1ee7 c\u1ea1nh \u0111i\u1ec7n c\u1ef1c (Fe d\u01b0\u1edbi 200 ppm), \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c. \u0110\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng ph\u1ee7 m\u00e0ng ng\u0103n th\u00f4ng th\u01b0\u1eddng (Fe d\u01b0\u1edbi 50 ppm) v\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng cao c\u1ea5p (Fe d\u01b0\u1edbi 10 ppm), \u00f4 nhi\u1ec5m do m\u00e1y nghi\u1ec1n bi lu\u00f4n v\u01b0\u1ee3t qu\u00e1 th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt. Th\u1ee9 hai, kh\u1ea3 n\u0103ng x\u1eed l\u00fd h\u1ea1t d\u01b0\u1edbi micron: d\u01b0\u1edbi D50 500 nm, vi\u1ec7c nghi\u1ec1n bi tr\u1edf n\u00ean kh\u00f4ng th\u1ef1c t\u1ebf \u0111\u1ed1i v\u1edbi boehmite c\u1ea5p pin \u2014 th\u1eddi gian x\u1eed l\u00fd t\u1eeb 8-16 gi\u1edd ch\u1ec9 t\u1ea1o ra c\u00e1c gi\u00e1 tr\u1ecb D50 \u1edf m\u1ee9c ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c v\u1edbi \u00f4 nhi\u1ec5m Zr cao t\u1eeb v\u1eadt li\u1ec7u d\u01b0\u1edbi milimet c\u1ea7n thi\u1ebft. D\u1ea5u hi\u1ec7u \u0111\u1ec3 chuy\u1ec3n sang m\u00e1y nghi\u1ec1n tia l\u00e0 khi th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt MFM c\u1ee7a b\u1ea1n kh\u1eaft khe h\u01a1n, d\u01b0\u1edbi 50 ppm, khi b\u1ea1n c\u1ea7n D50 d\u01b0\u1edbi 1 micron, ho\u1eb7c khi th\u1eddi gian chu k\u1ef3 s\u1ea3n xu\u1ea5t theo l\u00f4 \u0111ang h\u1ea1n ch\u1ebf n\u0103ng l\u1ef1c s\u1ea3n xu\u1ea5t c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n

\n