{"id":15825,"date":"2025-08-27T07:44:35","date_gmt":"2025-08-27T07:44:35","guid":{"rendered":"https:\/\/www.epicmicron.com\/?p=15825"},"modified":"2025-08-27T07:48:53","modified_gmt":"2025-08-27T07:48:53","slug":"the-relationship-between-gas-velocity-and-pressure-in-jet-mills","status":"publish","type":"post","link":"https:\/\/www.epicmicron.com\/vi\/the-relationship-between-gas-velocity-and-pressure-in-jet-mills\/","title":{"rendered":"M\u1ed1i quan h\u1ec7 gi\u1eefa v\u1eadn t\u1ed1c kh\u00ed v\u00e0 \u00e1p su\u1ea5t trong m\u00e1y nghi\u1ec1n ph\u1ea3n l\u1ef1c"},"content":{"rendered":"

Jet mills play a crucial role in the powder processing industry, especially within sectors such as batteries, ceramics, and pharmaceuticals. These mills are widely used for ultrafine grinding and precise classification of materials. A fundamental aspect of achieving optimal performance in jet milling is understanding how gas velocity and pressure interact. This knowledge not only improves grinding efficiency but also helps control particle size distribution and enhances overall product quality.<\/p>\n\n\n\n

V\u1eadt l\u00fd c\u01a1 b\u1ea3n: Nguy\u00ean l\u00fd Bernoulli<\/h2>\n\n\n\n
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C\u1ed1t l\u00f5i ho\u1ea1t \u0111\u1ed9ng c\u1ee7a m\u00e1y nghi\u1ec1n ph\u1ea3n l\u1ef1c l\u00e0 nguy\u00ean l\u00fd Bernoulli, gi\u1ea3i th\u00edch m\u1ed1i quan h\u1ec7 ngh\u1ecbch \u0111\u1ea3o gi\u1eefa v\u1eadn t\u1ed1c v\u00e0 \u00e1p su\u1ea5t trong \u0111\u1ed9ng l\u1ef1c h\u1ecdc ch\u1ea5t l\u01b0u. Khi v\u1eadn t\u1ed1c d\u00f2ng kh\u00ed t\u0103ng, \u00e1p su\u1ea5t gi\u1ea3m, v\u00e0 ng\u01b0\u1ee3c l\u1ea1i. C\u1ee5 th\u1ec3, v\u1eadn t\u1ed1c kh\u00ed cao h\u01a1n t\u01b0\u01a1ng \u1ee9ng v\u1edbi \u0111\u1ed9ng n\u0103ng t\u0103ng trong ch\u1ea5t l\u01b0u, d\u1eabn \u0111\u1ebfn \u00e1p su\u1ea5t th\u1ea5p h\u01a1n. S\u1ef1 ch\u00eanh l\u1ec7ch \u00e1p su\u1ea5t n\u00e0y r\u1ea5t quan tr\u1ecdng trong m\u00e1y nghi\u1ec1n ph\u1ea3n l\u1ef1c v\u00ec n\u00f3 th\u00fac \u0111\u1ea9y chuy\u1ec3n \u0111\u1ed9ng v\u00e0 va ch\u1ea1m c\u1ee7a c\u00e1c h\u1ea1t, thi\u1ebft y\u1ebfu cho qu\u00e1 tr\u00ecnh nghi\u1ec1n hi\u1ec7u qu\u1ea3.<\/p>\n\n\n\n

T\u1ed1c \u0111\u1ed9 v\u00e0 \u00e1p su\u1ea5t kh\u00ed \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn qu\u00e1 tr\u00ecnh nghi\u1ec1n b\u1eb1ng tia nh\u01b0 th\u1ebf n\u00e0o<\/h2>\n\n\n\n

Trong giai \u0111o\u1ea1n nghi\u1ec1n, kh\u00ed n\u00e9n \u0111\u01b0\u1ee3c t\u0103ng t\u1ed1c \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 si\u00eau thanh th\u00f4ng qua m\u1ed9t v\u00f2i phun \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1eb7c bi\u1ec7t, th\u01b0\u1eddng \u0111\u1ea1t v\u1eadn t\u1ed1c t\u1eeb 300 \u0111\u1ebfn 500 m\/s. S\u1ef1 gia t\u1ed1c nhanh n\u00e0y l\u00e0m t\u0103ng \u0111\u00e1ng k\u1ec3 \u0111\u1ed9ng n\u0103ng c\u1ee7a kh\u00ed, cho ph\u00e9p c\u00e1c h\u1ea1t va ch\u1ea1m v\u1edbi l\u1ef1c l\u1edbn h\u01a1n, t\u1eeb \u0111\u00f3 t\u1ea1o \u0111i\u1ec1u ki\u1ec7n gi\u1ea3m k\u00edch th\u01b0\u1edbc hi\u1ec7u qu\u1ea3. T\u1ea1i \u0111\u1ea7u ra c\u1ee7a v\u00f2i phun, \u00e1p su\u1ea5t gi\u1ea3m do v\u1eadn t\u1ed1c t\u0103ng, t\u1ea1o ra v\u00f9ng \u00e1p su\u1ea5t th\u1ea5p gi\u00fap h\u00fat v\u1eadt li\u1ec7u v\u00e0o bu\u1ed3ng nghi\u1ec1n v\u00e0 ng\u0103n v\u1eadt li\u1ec7u r\u00f2 r\u1ec9 ra ngo\u00e0i.<\/p>\n\n\n\n

Giai \u0111o\u1ea1n ph\u00e2n lo\u1ea1i t\u1eadn d\u1ee5ng v\u1eadn t\u1ed1c v\u00e0 \u00e1p su\u1ea5t \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t \u0111\u1ec3 ph\u00e2n t\u00e1ch c\u00e1c h\u1ea1t d\u1ef1a tr\u00ean k\u00edch th\u01b0\u1edbc. S\u1eed d\u1ee5ng tua-bin quay t\u1ed1c \u0111\u1ed9 cao, l\u1ef1c ly t\u00e2m \u0111\u1ea9y c\u00e1c h\u1ea1t th\u00f4 h\u01a1n ra r\u00eca ngo\u00e0i, \u0111\u01b0a ch\u00fang tr\u1edf l\u1ea1i v\u00f9ng nghi\u1ec1n \u0111\u1ec3 x\u1eed l\u00fd ti\u1ebfp. Trong khi \u0111\u00f3, c\u00e1c h\u1ea1t m\u1ecbn h\u01a1n di chuy\u1ec3n theo d\u00f2ng kh\u00ed \u0111\u1ebfn c\u00e1c b\u1ed9 t\u00e1ch cyclone \u0111\u1ec3 thu gom. Vi\u1ec7c \u0111i\u1ec1u ch\u1ec9nh c\u00e1c th\u00f4ng s\u1ed1 nh\u01b0 l\u1ef1c h\u00fat c\u1ee7a qu\u1ea1t v\u00e0 \u00e1p su\u1ea5t v\u00f2i phun cho ph\u00e9p ki\u1ec3m so\u00e1t ch\u00ednh x\u00e1c v\u1eadn t\u1ed1c v\u00e0 \u00e1p su\u1ea5t kh\u00ed trong v\u00f9ng ph\u00e2n lo\u1ea1i, cho ph\u00e9p qu\u1ea3n l\u00fd k\u00edch th\u01b0\u1edbc h\u1ea1t ch\u00ednh x\u00e1c.<\/p>\n\n\n\n

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T\u00e1c \u0111\u1ed9ng c\u1ee7a \u00e1p su\u1ea5t v\u00e0 nhi\u1ec7t \u0111\u1ed9 l\u00ean d\u00f2ng kh\u00ed<\/h2>\n\n\n\n

\u00c1p su\u1ea5t c\u1ee7a kh\u00ed l\u00e0m vi\u1ec7c l\u00e0 y\u1ebfu t\u1ed1 chi ph\u1ed1i \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn v\u1eadn t\u1ed1c kh\u00ed b\u00ean trong m\u00e1y nghi\u1ec1n ph\u1ea3n l\u1ef1c. \u00c1p su\u1ea5t cao h\u01a1n d\u1eabn \u0111\u1ebfn d\u00f2ng kh\u00ed ch\u1ea3y nhanh h\u01a1n t\u1ea1i \u0111\u1ea7u ra c\u1ee7a v\u00f2i phun, v\u00ed d\u1ee5, \u00e1p su\u1ea5t h\u01a1i n\u01b0\u1edbc t\u1eeb 0,8 \u0111\u1ebfn 1,7 MPa c\u00f3 th\u1ec3 t\u1ea1o ra v\u1eadn t\u1ed1c l\u00ean t\u1edbi 500 m\/s. \u00c1p su\u1ea5t cao kh\u00f4ng ch\u1ec9 l\u00e0m t\u0103ng t\u1ed1c \u0111\u1ed9 m\u00e0 c\u00f2n l\u00e0m t\u0103ng m\u1eadt \u0111\u1ed9 kh\u00ed, t\u1eeb \u0111\u00f3 t\u0103ng th\u00eam \u0111\u1ed9ng n\u0103ng c\u00f3 s\u1eb5n \u0111\u1ec3 ph\u00e1 v\u1ee1 c\u00e1c h\u1ea1t.<\/p>\n\n\n\n

Nhi\u1ec7t \u0111\u1ed9 c\u0169ng \u0111\u00f3ng m\u1ed9t vai tr\u00f2 quan tr\u1ecdng. Nhi\u1ec7t \u0111\u1ed9 kh\u00ed cao h\u01a1n c\u00f3 th\u1ec3 l\u00e0m t\u0103ng v\u1eadn t\u1ed1c t\u1edbi h\u1ea1n c\u1ee7a kh\u00ed, c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng nghi\u1ec1n c\u1ee7a m\u00e1y nghi\u1ec1n. V\u00ed d\u1ee5, v\u1eadn t\u1ed1c kh\u00f4ng kh\u00ed c\u00f3 th\u1ec3 t\u0103ng t\u1eeb kho\u1ea3ng 320 \u0111\u1ebfn 500 m\/s khi \u0111\u01b0\u1ee3c gia nhi\u1ec7t. Tuy nhi\u00ean, c\u1ea7n ph\u1ea3i t\u00ednh \u0111\u1ebfn kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t c\u1ee7a v\u1eadt li\u1ec7u, \u0111\u1eb7c bi\u1ec7t \u0111\u1ed1i v\u1edbi c\u00e1c ch\u1ea5t nh\u1ea1y nhi\u1ec7t ho\u1eb7c ch\u1ea5t bi\u1ebfn t\u00ednh b\u1ec1 m\u1eb7t, \u0111\u00f2i h\u1ecfi ph\u1ea3i \u0111i\u1ec1u ch\u1ec9nh nhi\u1ec7t \u0111\u1ed9 c\u1ea9n th\u1eadn trong qu\u00e1 tr\u00ecnh nghi\u1ec1n.<\/p>\n\n\n\n

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V\u00ed d\u1ee5 th\u1ef1c t\u1ebf: Nghi\u1ec1n b\u1ed9t Titan<\/h2>\n\n\n\n

Trong \u1ee9ng d\u1ee5ng li\u00ean quan \u0111\u1ebfn b\u1ed9t titan, h\u01a1i n\u01b0\u1edbc si\u00eau nhi\u1ec7t \u1edf nhi\u1ec7t \u0111\u1ed9 t\u1eeb 300 \u0111\u1ebfn 400 \u0111\u1ed9 C k\u1ebft h\u1ee3p v\u1edbi \u00e1p su\u1ea5t h\u01a1i t\u1eeb 0,8 \u0111\u1ebfn 1,7 MPa t\u1ea1o ra lu\u1ed3ng kh\u00ed kho\u1ea3ng 500 m\/s. M\u00f4i tr\u01b0\u1eddng n\u00e0y t\u1ea1o ra c\u00e1c va ch\u1ea1m h\u1ea1t m\u1ea1nh, \u0111\u1ea1t k\u00edch th\u01b0\u1edbc h\u1ea1t \u1edf m\u1ee9c micron. B\u1eb1ng c\u00e1ch tinh ch\u1ec9nh \u00e1p su\u1ea5t v\u00e0 v\u1eadn t\u1ed1c, ng\u01b0\u1eddi v\u1eadn h\u00e0nh c\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh ph\u00e2n b\u1ed1 k\u00edch th\u01b0\u1edbc h\u1ea1t cu\u1ed1i c\u00f9ng trong ph\u1ea1m vi t\u1eeb 1 \u0111\u1ebfn 74 micromet, ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c y\u00eau c\u1ea7u c\u1ee5 th\u1ec3 c\u1ee7a v\u1eadt li\u1ec7u.<\/p>\n\n\n\n

Ph\u1ea7n k\u1ebft lu\u1eadn<\/h2>\n\n\n\n

Trong quy tr\u00ecnh nghi\u1ec1n tia, vi\u1ec7c hi\u1ec3u r\u00f5 c\u00e1ch th\u1ee9c v\u1eadn t\u1ed1c kh\u00ed v\u00e0 \u00e1p su\u1ea5t t\u01b0\u01a1ng t\u00e1c l\u00e0 \u0111i\u1ec1u c\u01a1 b\u1ea3n. D\u00f2ng kh\u00ed t\u1ed1c \u0111\u1ed9 cao v\u1edbi \u00e1p su\u1ea5t th\u1ea5p th\u00fac \u0111\u1ea9y qu\u00e1 tr\u00ecnh ph\u00e1 v\u1ee1 h\u1ea1t hi\u1ec7u qu\u1ea3, trong khi s\u1ef1 thay \u0111\u1ed5i v\u1eadn t\u1ed1c v\u00e0 \u00e1p su\u1ea5t \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t trong v\u00f9ng ph\u00e2n lo\u1ea1i cho ph\u00e9p ph\u00e2n t\u00e1ch k\u00edch th\u01b0\u1edbc h\u1ea1t ch\u00ednh x\u00e1c. Vi\u1ec7c t\u1ed1i \u01b0u h\u00f3a thi\u1ebft k\u1ebf v\u00f2i phun, \u00e1p su\u1ea5t kh\u00ed l\u00e0m vi\u1ec7c v\u00e0 nhi\u1ec7t \u0111\u1ed9 mang l\u1ea1i hi\u1ec7u qu\u1ea3 nghi\u1ec1n, k\u00edch th\u01b0\u1edbc s\u1ea3n ph\u1ea9m \u0111\u1ed3ng \u0111\u1ec1u v\u00e0 kh\u1ea3 n\u0103ng ki\u1ec3m so\u00e1t quy tr\u00ecnh linh ho\u1ea1t, \u0111\u1ea3m b\u1ea3o m\u00e1y nghi\u1ec1n tia c\u00f3 th\u1ec3 x\u1eed l\u00fd nhi\u1ec1u t\u00ednh ch\u1ea5t v\u1eadt li\u1ec7u kh\u00e1c nhau v\u00e0 \u0111\u1ea1t \u0111\u01b0\u1ee3c \u0111\u1ed9 m\u1ecbn mong mu\u1ed1n.<\/p>\n\n\n\n

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Gi\u1edbi thi\u1ec7u v\u1ec1 Epic Powder<\/strong><\/strong><\/h2>\n\n\n\n

B\u1ed9t s\u1eed thi<\/a> specializes in providing advanced powder processing solutions, including jet milling systems equipped with precise gas velocity and pressure control mechanisms. Our technologies ensure high grinding efficiency, narrow particle size distribution, and contamination-free processing for a wide range of materials, from metals and ceramics to battery compounds. With a focus on innovation and reliability, Epic Powder supports industries in achieving superior product performance and manufacturing excellence.<\/p>\n\n\n\n

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