{"id":15029,"date":"2025-03-28T08:56:37","date_gmt":"2025-03-28T08:56:37","guid":{"rendered":"https:\/\/www.epicmicron.com\/?p=15029"},"modified":"2025-03-28T08:56:39","modified_gmt":"2025-03-28T08:56:39","slug":"impact-of-excessive-grinding-speed-on-particle-size-distribution","status":"publish","type":"post","link":"https:\/\/www.epicmicron.com\/vi\/impact-of-excessive-grinding-speed-on-particle-size-distribution\/","title":{"rendered":"T\u00e1c \u0111\u1ed9ng c\u1ee7a t\u1ed1c \u0111\u1ed9 nghi\u1ec1n qu\u00e1 m\u1ee9c l\u00ean s\u1ef1 ph\u00e2n b\u1ed1 k\u00edch th\u01b0\u1edbc h\u1ea1t"},"content":{"rendered":"

T\u1ed1c \u0111\u1ed9 nghi\u1ec1n qu\u00e1 m\u1ee9c ch\u1ee7 y\u1ebfu \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn s\u1ef1 ph\u00e2n b\u1ed1 k\u00edch th\u01b0\u1edbc h\u1ea1t v\u1ec1 m\u1eb7t ph\u1ea1m vi v\u00e0 t\u00ednh \u0111\u1ed3ng nh\u1ea5t:<\/p>\n\n\n\n

\"\"
Quy\u1ec1n l\u1ef1c<\/em><\/figcaption><\/figure>\n\n\n\n

T\u0103ng nguy c\u01a1 ph\u00e2n ph\u1ed1i bimodal<\/strong><\/p>\n\n\n\n

T\u00e1c \u0111\u1ed9ng t\u1ed1c \u0111\u1ed9 cao khi\u1ebfn c\u00e1c h\u1ea1t gi\u00f2n (v\u00ed d\u1ee5, b\u1ed9t g\u1ed1m) nhanh ch\u00f3ng v\u1ee1 th\u00e0nh c\u00e1c h\u1ea1t si\u00eau m\u1ecbn (<1\u03bcm), trong khi c\u00e1c h\u1ea1t d\u1ebbo (v\u00ed d\u1ee5, polyme) t\u1ea1o th\u00e0nh c\u00e1c h\u1ea1t th\u00f4 c\u00f2n s\u00f3t l\u1ea1i (>50\u03bcm) do gi\u1ea3i ph\u00f3ng \u1ee9ng su\u1ea5t kh\u00f4ng \u0111\u1ee7. \u0110i\u1ec1u n\u00e0y t\u1ea1o ra s\u1ef1 ph\u00e2n b\u1ed1 bimodal b\u1ea5t th\u01b0\u1eddng khi c\u00e1c h\u1ea1t si\u00eau m\u1ecbn v\u00e0 h\u1ea1t th\u00f4 kh\u00f4ng b\u1ecb v\u1ee1 c\u00f9ng t\u1ed3n t\u1ea1i.<\/p>\n\n\n\n

Hi\u1ec7u \u1ee9ng k\u1ebft t\u1ee5 t\u0103ng c\u01b0\u1eddng<\/strong><\/p>\n\n\n\n

Khi t\u1ed1c \u0111\u1ed9 v\u01b0\u1ee3t qu\u00e1 ng\u01b0\u1ee1ng quan tr\u1ecdng<\/a> (th\u01b0\u1eddng l\u00e0 80% t\u1ed1c \u0111\u1ed9 ly t\u00e2m c\u1ee7a ph\u01b0\u01a1ng ti\u1ec7n), ph\u01b0\u01a1ng ti\u1ec7n nghi\u1ec1n b\u00e1m d\u00ednh ly t\u00e2m v\u00e0o th\u00e0nh, l\u00e0m gi\u1ea3m va ch\u1ea1m hi\u1ec7u qu\u1ea3. Tuy nhi\u00ean, nhi\u1ec7t do ma s\u00e1t t\u1ee9c th\u1eddi (t\u1ea1i ch\u1ed7 60-80\u00b0C) l\u00e0m tan ch\u1ea3y b\u1ec1 m\u1eb7t h\u1ea1t m\u1ecbn, t\u1ea1o th\u00e0nh c\u00e1c kh\u1ed1i k\u1ebft t\u1ee5 th\u1ee9 c\u1ea5p (5-20\u03bcm). Trong qu\u00e1 tr\u00ecnh nghi\u1ec1n qu\u00e1 m\u1ee9c, \u0111i\u1ec1u n\u00e0y l\u00e0m t\u0103ng \u0111\u1ed9 l\u1ec7ch gi\u1eefa k\u00edch th\u01b0\u1edbc h\u1ea1t ph\u00e2n t\u00e1n danh ngh\u0129a v\u00e0 th\u1ef1c t\u1ebf.<\/p>\n\n\n\n

M\u1edf r\u1ed9ng ph\u1ea1m vi ph\u00e2n ph\u1ed1i<\/strong><\/p>\n\n\n\n

Th\u00f4ng th\u01b0\u1eddng bi\u1ec3u hi\u1ec7n l\u00e0 t\u1ef7 l\u1ec7 D90\/D10 t\u0103ng t\u1eeb m\u1ee9c t\u1ed1i \u01b0u 2-3x l\u00ean 4-5x. V\u00ed d\u1ee5, b\u1ed9t alumina nghi\u1ec1n \u1edf t\u1ed1c \u0111\u1ed9 5000 v\u00f2ng\/ph\u00fat cho th\u1ea5y D50 gi\u1ea3m t\u1eeb 10\u03bcm xu\u1ed1ng 3\u03bcm, nh\u01b0ng v\u1edbi D10=0,8\u03bcm v\u00e0 D90=15\u03bcm \u2013 r\u1ed9ng h\u01a1n \u0111\u00e1ng k\u1ec3 so v\u1edbi k\u1ebft qu\u1ea3 quy tr\u00ecnh th\u00f4ng th\u01b0\u1eddng l\u00e0 D10=2\u03bcm\/D90=6\u03bcm.<\/p>\n\n\n\n

Nghi\u00ean c\u1ee9u tr\u01b0\u1eddng h\u1ee3p<\/strong>:<\/p>\n\n\n\n

Khi h\u1ea1t zirconia nghi\u1ec1n b\u1ed9t silica \u1edf t\u1ed1c \u0111\u1ed9 t\u1edbi h\u1ea1n >75%, \u0111\u1ed9 gi\u1eef h\u1ea1t th\u00f4 \u0111\u1ea1t 10-30%. T\u1ed1c \u0111\u1ed9 t\u1ed1i \u01b0u (t\u1ed1c \u0111\u1ed9 t\u1edbi h\u1ea1n 60-70%) l\u00e0m gi\u1ea3m \u0111\u1ed9 gi\u1eef xu\u1ed1ng <5%.<\/p>\n\n\n\n

Khuy\u1ebfn ngh\u1ecb<\/strong>:<\/p>\n\n\n\n

Gi\u00e1m s\u00e1t th\u1eddi gian th\u1ef1c v\u1edbi m\u00e1y ph\u00e2n t\u00edch h\u1ea1t laser<\/p>\n\n\n\n

\u0110i\u1ec1u ch\u1ec9nh t\u1ed1c \u0111\u1ed9 \u0111\u1ed9ng b\u1eb1ng c\u00f4ng th\u1ee9c m\u1eadt \u0111\u1ed9 n\u0103ng l\u01b0\u1ee3ng E=0,5m(v\u00b2), trong \u0111\u00f3 \u0111\u1ed9ng n\u0103ng t\u1ef7 l\u1ec7 thu\u1eadn v\u1edbi b\u00ecnh ph\u01b0\u01a1ng t\u1ed1c \u0111\u1ed9<\/p>\n\n\n\n

Ng\u01b0\u1ee1ng g\u00e3y v\u1eadt li\u1ec7u ph\u00f9 h\u1ee3p (th\u01b0\u1eddng l\u00e0 0,1-1J\/g)<\/p>\n\n\n\n

Epic Powder Jet Mill stands out as the ideal choice for high-demand powder processing, offering exceptional grinding efficiency and precise particle size control. Whether it’s kaolin, chemical materials, or specialty powders, Epic Powder delivers efficient, energy-saving, and environmentally friendly solutions.<\/p>\n\n\n\n

    <\/ol>\n\n\n\n

    Ch\u00fang t\u00f4i cam k\u1ebft t\u1ea1o ra gi\u00e1 tr\u1ecb l\u1edbn h\u01a1n cho kh\u00e1ch h\u00e0ng th\u00f4ng qua c\u00f4ng ngh\u1ec7 ti\u00ean ti\u1ebfn v\u00e0 h\u1ed7 tr\u1ee3 sau b\u00e1n h\u00e0ng to\u00e0n di\u1ec7n, gi\u00fap doanh nghi\u1ec7p c\u1ee7a b\u1ea1n ph\u00e1t tri\u1ec3n m\u1ea1nh m\u1ebd.<\/p>\n\n\n\n

    Ch\u1ecdn B\u1ed9t s\u1eed thi<\/a> \u0111\u1ec3 c\u00f3 gi\u1ea3i ph\u00e1p x\u1eed l\u00fd b\u1ed9t hi\u1ec7u qu\u1ea3, ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng v\u00e0 th\u00e2n thi\u1ec7n v\u1edbi m\u00f4i tr\u01b0\u1eddng!<\/p>\n\n\n\n

    Contact us to learn more about our products!<\/p>\n\n\n\n

    \n