{"id":129149,"date":"2023-09-27T10:38:00","date_gmt":"2023-09-27T02:38:00","guid":{"rendered":"https:\/\/www.alpapowder.com\/129149\/"},"modified":"2023-09-27T10:38:01","modified_gmt":"2023-09-27T02:38:01","slug":"kich-thuoc-hat-cua-nguyen-lieu-tho-va-phu-lieu-co-qua-lon-khong-hay-thu-may-nghien-phan-luc","status":"publish","type":"post","link":"https:\/\/www.alpapowder.com\/vi\/129149\/","title":{"rendered":"K\u00edch th\u01b0\u1edbc h\u1ea1t c\u1ee7a nguy\u00ean li\u1ec7u th\u00f4 v\u00e0 ph\u1ee5 li\u1ec7u c\u00f3 qu\u00e1 l\u1edbn kh\u00f4ng? H\u00e3y th\u1eed m\u00e1y nghi\u1ec1n ph\u1ea3n l\u1ef1c"},"content":{"rendered":"

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So v\u1edbi c\u00e1c lo\u1ea1i m\u00e1y nghi\u1ec1n b\u1ed9t kh\u00e1c, \u01b0u \u0111i\u1ec3m ch\u00ednh c\u1ee7a m\u00e1y nghi\u1ec1n phun ph\u1ea3n l\u1ef1c l\u00e0 n\u00f3 c\u00f3 th\u1ec3 nghi\u1ec1n n\u00e1t c\u00e1c v\u1eadt li\u1ec7u k\u1ebft tinh th\u00e0nh k\u00edch th\u01b0\u1edbc h\u1ea1t trung b\u00ecnh t\u1eeb 1 \u0111\u1ebfn 10 micron v\u00e0 \u0111\u1ed3ng th\u1eddi trong ph\u1ea1m vi k\u00edch th\u01b0\u1edbc h\u1ea1t r\u1ea5t h\u1eb9p.<\/p>\n

Th\u00f4ng th\u01b0\u1eddng, m\u1ed9t m\u00e1y nghi\u1ec1n ph\u1ea3n l\u1ef1c s\u1ebd nghi\u1ec1n c\u00e1c v\u1eadt li\u1ec7u d\u1ec5 v\u1ee1 ho\u1eb7c k\u1ebft tinh xu\u1ed1ng k\u00edch th\u01b0\u1edbc h\u1ea1t trung b\u00ecnh t\u1eeb 1 \u0111\u1ebfn 10 micron. M\u1ed9t s\u1ed1 s\u1ea3n ph\u1ea9m nh\u1ea5t \u0111\u1ecbnh, ch\u1eb3ng h\u1ea1n nh\u01b0 m\u1ed9t s\u1ed1 h\u1ee3p ch\u1ea5t molypden, b\u1ed9t m\u00e0u s\u01a1n v\u00e0 c\u00e1c s\u1ea3n ph\u1ea9m t\u01b0\u01a1ng t\u1ef1, c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c gi\u1ea3m k\u00edch th\u01b0\u1edbc xu\u1ed1ng c\u00f2n 200 nanomet. C\u00e1c h\u1ea1t l\u1edbn h\u01a1n 10 micron th\u01b0\u1eddng l\u00e0 c\u00e1c polyme kh\u00f3 ph\u00e1 v\u1ee1, ch\u1eb3ng h\u1ea1n nh\u01b0 h\u1ee3p ch\u1ea5t m\u1ef1c ho\u1eb7c s\u00e1p c\u1ee9ng v\u00e0 m\u1ed9t s\u1ed1 v\u1eadt li\u1ec7u h\u1eefu c\u01a1, nh\u01b0ng n\u1ebfu c\u1ea7n k\u00edch th\u01b0\u1edbc l\u1edbn h\u01a1n, c\u00f3 th\u1ec3 gi\u1ea3m nhi\u1ec1u h\u1ea1t b\u1eb1ng c\u00e1ch gi\u1ea3m c\u00f4ng su\u1ea5t c\u1ee7a m\u00e1y nghi\u1ec1n ph\u1ea3n l\u1ef1c ho\u1eb7c t\u0103ng l\u01b0\u1ee3ng c\u1ea5p li\u1ec7u. t\u1ef7 l\u1ec7.<\/p>\n

Nguy\u00ean l\u00fd l\u00e0m vi\u1ec7c c\u1ee7a m\u00e1y nghi\u1ec1n d\u00f2ng kh\u00ed l\u00e0: kh\u00ed n\u00e9n \u0111\u01b0\u1ee3c s\u1ea5y kh\u00f4, sau khi s\u1ea5y kh\u00f4 s\u1ebd \u0111i v\u00e0o bu\u1ed3ng nghi\u1ec1n qua v\u00f2i phun. Trong bu\u1ed3ng nghi\u1ec1n, v\u1eadt li\u1ec7u c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c nghi\u1ec1n n\u00e1t nh\u1edd lu\u1ed3ng kh\u00f4ng kh\u00ed \u00e1p su\u1ea5t cao. Sau \u0111\u00f3, c\u00e1c v\u1eadt li\u1ec7u th\u00f4 v\u00e0 m\u1ecbn c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u00e1ch ra d\u01b0\u1edbi l\u1ef1c ly t\u00e2m do tuabin ph\u00e2n lo\u1ea1i t\u1ea1o ra. C\u00e1c h\u1ea1t \u0111\u00e1p \u1ee9ng y\u00eau c\u1ea7u v\u1ec1 k\u00edch th\u01b0\u1edbc h\u1ea1t s\u1ebd \u0111i v\u00e0o m\u00e1y t\u00e1ch l\u1ed1c xo\u00e1y v\u00e0 m\u00e1y h\u00fat b\u1ee5i v\u00e0 \u0111\u01b0\u1ee3c thu gom, c\u00f2n c\u00e1c h\u1ea1t kh\u00f4ng \u0111\u00e1p \u1ee9ng y\u00eau c\u1ea7u s\u1ebd ti\u1ebfp t\u1ee5c b\u1ecb nghi\u1ec1n n\u00e1t. C\u00e1c \u0111\u1eb7c t\u00ednh hi\u1ec7u su\u1ea5t c\u1ee7a m\u00e1y nghi\u1ec1n ph\u1ea3n l\u1ef1c ch\u1ee7 y\u1ebfu bao g\u1ed3m c\u00e1c \u0111i\u1ec3m sau:<\/p>\n

1. B\u00ean trong c\u00f3 m\u1ed9t thi\u1ebft b\u1ecb ph\u00e2n lo\u1ea1i d\u1ecdc, c\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh k\u00edch th\u01b0\u1edbc h\u1ea1t c\u1ee7a s\u1ea3n ph\u1ea9m. K\u00edch th\u01b0\u1edbc h\u1ea1t nghi\u1ec1n t\u1ed1t v\u00e0 ph\u00e2n b\u1ed1 k\u00edch th\u01b0\u1edbc h\u1ea1t t\u01b0\u01a1ng \u0111\u1ed1i h\u1eb9p. 2. N\u00f3 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng n\u1ed1i ti\u1ebfp v\u1edbi b\u1ed9 ph\u00e2n lo\u1ea1i nhi\u1ec1u giai \u0111o\u1ea1n \u0111\u1ec3 t\u1ea1o th\u00e0nh nhi\u1ec1u ph\u00e2n \u0111o\u1ea1n chi ti\u1ebft c\u00f9ng m\u1ed9t l\u00fac. 3. Thi\u1ebft b\u1ecb r\u1ea5t thu\u1eadn ti\u1ec7n \u0111\u1ec3 th\u00e1o r\u1eddi v\u00e0 l\u1eafp r\u00e1p, d\u1ec5 d\u00e0ng v\u1ec7 sinh. Kh\u00f4ng c\u00f3 \u0111i\u1ec3m ch\u1ebft tr\u00ean t\u01b0\u1eddng b\u00ean trong n\u00ean c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c l\u00e0m s\u1ea1ch ho\u00e0n to\u00e0n. 4. \u0110\u01b0\u1ee3c v\u1eadn h\u00e0nh k\u00edn kh\u00ed n\u00ean khi v\u1eadn h\u00e0nh \u00edt ti\u1ebfng \u1ed3n, gi\u1ea3m ph\u00e1t sinh b\u1ee5i v\u00e0 th\u00e2n thi\u1ec7n v\u1edbi m\u00f4i tr\u01b0\u1eddng. 5. H\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n v\u1eadn h\u00e0nh \u0111\u01a1n gi\u1ea3n, thi\u1ebft b\u1ecb v\u1eadn h\u00e0nh an to\u00e0n v\u00e0 tin c\u1eady.<\/p>\n

Nh\u1eefng v\u1eadt li\u1ec7u n\u00e0o c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c nghi\u1ec1n b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p phay ph\u1ea3n l\u1ef1c?
\nB\u1ea5t k\u1ef3 lo\u1ea1i b\u1ed9t k\u1ebft tinh ho\u1eb7c b\u1ed9t d\u1ec5 v\u1ee1 n\u00e0o c\u0169ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c nghi\u1ec1n trong m\u00e1y nghi\u1ec1n ph\u1ea3n l\u1ef1c. V\u1eadt li\u1ec7u \u01b0\u1edbt c\u0169ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c l\u00e0m kh\u00f4 v\u00e0 nghi\u1ec1n nhanh ch\u00f3ng \u0111\u1ed3ng th\u1eddi b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng kh\u00f4ng kh\u00ed n\u00f3ng ho\u1eb7c h\u01a1i n\u01b0\u1edbc qu\u00e1 nhi\u1ec7t.<\/p>\n

C\u00e1c \u0111\u1eb7c \u0111i\u1ec3m c\u1ee7a s\u1ea3n ph\u1ea9m m\u00e1y nghi\u1ec1n ph\u1ea3n l\u1ef1c l\u00e0 g\u00ec?
\nM\u1ed9t trong nh\u1eefng \u0111\u1eb7c \u0111i\u1ec3m quan tr\u1ecdng nh\u1ea5t c\u1ee7a s\u1ea3n ph\u1ea9m m\u00e1y nghi\u1ec1n ph\u1ea3n l\u1ef1c l\u00e0 s\u1ef1 gia t\u0103ng \u0111\u00e1ng k\u1ec3 di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t. Khi gi\u1ea3m xu\u1ed1ng 5 micron, s\u1ed1 l\u01b0\u1ee3ng h\u1ea1t trong s\u1ea3n ph\u1ea9m 30 l\u01b0\u1edbi t\u0103ng l\u00ean 1.643.000 l\u1ea7n v\u00e0 di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t t\u0103ng 118 l\u1ea7n. \u0110i\u1ec1u n\u00e0y r\u00fat ng\u1eafn th\u1eddi gian ph\u1ea3n \u1ee9ng c\u1ee7a h\u00f3a ch\u1ea5t. T\u0103ng hi\u1ec7u l\u1ef1c c\u1ee7a thu\u1ed1c b\u1eb1ng c\u00e1ch t\u0103ng di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t, do \u0111\u00f3 c\u1ea7n li\u1ec1u l\u01b0\u1ee3ng thu\u1ed1c th\u1ea5p h\u01a1n \u0111\u1ec3 th\u1ef1c hi\u1ec7n c\u00f9ng m\u1ed9t c\u00f4ng vi\u1ec7c.<\/p>\n

L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 \u0111i\u1ec1u ch\u1ec9nh k\u00edch th\u01b0\u1edbc h\u1ea1t trong m\u00e1y nghi\u1ec1n ph\u1ea3n l\u1ef1c?
\nK\u00edch th\u01b0\u1edbc h\u1ea1t ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh b\u1eb1ng nh\u1eefng thay \u0111\u1ed5i v\u1ec1 t\u1ed1c \u0111\u1ed9 c\u1ea5p li\u1ec7u. Khi t\u1ed1c \u0111\u1ed9 gi\u1ea3m, c\u00e1c h\u1ea1t m\u1ecbn h\u01a1n \u0111\u01b0\u1ee3c t\u1ea1o ra v\u00ec c\u00f3 nhi\u1ec1u n\u0103ng l\u01b0\u1ee3ng h\u01a1n tr\u00ean m\u1ed7i h\u1ea1t \u0111\u1ec3 t\u0103ng t\u1ed1c c\u00e1c h\u1ea1t. C\u00e1c va ch\u1ea1m tr\u1edf n\u00ean d\u1eef d\u1ed9i h\u01a1n v\u00e0 gradient \u00e1p su\u1ea5t t\u0103ng l\u00ean. M\u1ed9t s\u1ed1 s\u1ea3n ph\u1ea9m \u0111\u00f2i h\u1ecfi n\u0103ng l\u01b0\u1ee3ng \u1ee9ng d\u1ee5ng c\u1ef1c cao \u0111\u1ec3 nghi\u1ec1n. T\u01b0\u01a1ng t\u1ef1 nh\u01b0 v\u1eady, v\u1edbi m\u1ed9t t\u1ed1c \u0111\u1ed9 nh\u1ea5t \u0111\u1ecbnh, h\u1ea1t c\u00e0ng nh\u1ecf th\u00ec n\u0103ng l\u01b0\u1ee3ng c\u1ee7a m\u1ed7i va ch\u1ea1m c\u00e0ng th\u1ea5p. \u0110\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c m\u1ee9c gi\u1ea3m k\u00edch th\u01b0\u1edbc l\u1edbn h\u01a1n, v\u1eadn t\u1ed1c h\u1ea1t ph\u1ea3i \u0111\u01b0\u1ee3c t\u0103ng l\u00ean.<\/p>\n

Kh\u00ed n\u00e9n c\u00f3 ph\u1ea3i l\u00e0 lo\u1ea1i kh\u00ed duy nh\u1ea5t cung c\u1ea5p n\u0103ng l\u01b0\u1ee3ng cho m\u00e1y nghi\u1ec1n ph\u1ea3n l\u1ef1c kh\u00f4ng?
\nV\u1ec1 m\u1eb7t th\u01b0\u01a1ng m\u1ea1i, kh\u00ed n\u00e9n cho \u0111\u1ebfn nay l\u00e0 lo\u1ea1i kh\u00ed \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn nh\u1ea5t, nh\u01b0ng trong c\u00e1c thi\u1ebft b\u1ecb l\u1edbn ch\u1ee7 y\u1ebfu nghi\u1ec1n b\u1ed9t m\u00e0u titan dioxide, h\u01a1i qu\u00e1 nhi\u1ec7t (kh\u00f4ng c\u00f3 h\u01a1i \u1ea9m \u1edf tr\u1ea1ng th\u00e1i qu\u00e1 nhi\u1ec7t) \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng.<\/p>\n

M\u00e1y nghi\u1ec1n ph\u1ea3n l\u1ef1c g\u00e2y ra bao nhi\u00eau \u00f4 nhi\u1ec5m cho s\u1ea3n ph\u1ea9m?
\nM\u00e1y nghi\u1ec1n ph\u1ea3n l\u1ef1c \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh ph\u00f9 h\u1ee3p s\u1ebd kh\u00f4ng g\u00e2y ra b\u1ea5t k\u1ef3 \u00f4 nhi\u1ec5m n\u00e0o cho s\u1ea3n ph\u1ea9m ho\u1eb7c n\u00f3 s\u1ebd nh\u1ecf \u0111\u1ebfn m\u1ee9c kh\u00f4ng th\u1ec3 ph\u00e1t hi\u1ec7n \u0111\u01b0\u1ee3c v\u00e0 kh\u00f4ng c\u00f3 \u00fd ngh\u0129a g\u00ec. Khi nghi\u1ec1n c\u00e1c v\u1eadt li\u1ec7u nh\u01b0 alumina, silica<\/a>, oxit s\u1eaft, v.v., m\u00e1y nghi\u1ec1n ph\u1ea3n l\u1ef1c \u0111\u01b0\u1ee3c l\u00f3t b\u1eb1ng g\u1ed1m cacbua vonfram ho\u1eb7c cacbua silic v\u1edbi \u0111\u1ed9 c\u1ee9ng 9,6 (kim c\u01b0\u01a1ng l\u00e0 10). Nh\u1eefng l\u1edbp l\u00f3t n\u00e0y \u0111\u00e3 \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n trong h\u01a1n 35 n\u0103m v\u00e0 l\u00e0 m\u1ed9t trong nh\u1eefng \u1ee9ng d\u1ee5ng s\u1edbm nh\u1ea5t c\u1ee7a lo\u1ea1i l\u1edbp l\u00f3t g\u1ed1m n\u00e0y.<\/p>\n

C\u00f3 th\u1ec3 s\u1eed d\u1ee5ng m\u00e1y nghi\u1ec1n ph\u1ea3n l\u1ef1c ch\u1ec9 \u0111\u1ec3 gi\u1ea3m k\u00edch th\u01b0\u1edbc h\u1ea1t?
\nM\u00e1y nghi\u1ec1n ph\u1ea3n l\u1ef1c c\u00f3 nhi\u1ec1u \u1ee9ng d\u1ee5ng b\u00ean c\u1ea1nh vi\u1ec7c gi\u1ea3m k\u00edch th\u01b0\u1edbc. M\u1ed9t trong nh\u1eefng \u1ee9ng d\u1ee5ng ph\u1ee5 quan tr\u1ecdng c\u1ee7a m\u00e1y nghi\u1ec1n ph\u1ea3n l\u1ef1c l\u00e0 tr\u1ed9n b\u1ed9t. Hai ho\u1eb7c nhi\u1ec1u d\u00f2ng nguy\u00ean li\u1ec7u c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o m\u00e1y nghi\u1ec1n ph\u1ea3n l\u1ef1c c\u00f9ng l\u00fac, nh\u1edd \u0111\u00f3 \u0111\u1ea1t \u0111\u01b0\u1ee3c s\u1ef1 tr\u1ed9n \u0111\u1ec1u ho\u00e0n h\u1ea3o \u1edf \u0111\u1ea7u ra. M\u1ed9t s\u1ea3n ph\u1ea9m c\u0169ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ph\u1ee7 v\u00e0 tr\u1ed9n v\u1edbi m\u1ed9t s\u1ea3n ph\u1ea9m kh\u00e1c. Trong m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p, ch\u1ea5t ph\u1ee5 gia d\u1ea1ng l\u1ecfng \u0111\u01b0\u1ee3c b\u01a1m tr\u1ef1c ti\u1ebfp d\u01b0\u1edbi \u00e1p su\u1ea5t v\u00e0o bu\u1ed3ng nghi\u1ec1n th\u00f4ng qua m\u1ed9t ho\u1eb7c nhi\u1ec1u v\u00f2i phun nguy\u00ean t\u1eed. M\u1ed9t c\u00e1ch s\u1eed d\u1ee5ng kh\u00e1c c\u1ee7a phay kh\u00ed l\u00e0 \u0111\u00e1nh b\u00f3ng c\u00e1c c\u1ea1nh s\u1eafc tr\u00ean h\u1ea1t \u0111\u1ec3 ch\u00fang ch\u1ea3y ho\u1eb7c n\u00e9n t\u1ed1t h\u01a1n.<\/p>\n","protected":false},"excerpt":{"rendered":"

M\u1ed9t s\u1ed1 s\u1ea3n ph\u1ea9m \u0111\u01b0\u1ee3c \u0111\u00e1nh b\u00f3ng \u0111\u01a1n gi\u1ea3n b\u1eb1ng c\u00e1ch ch\u1ea1y \u1edf t\u1ed1c \u0111\u1ed9 ti\u1ebfn dao cao h\u01a1n v\u1edbi \u00e1p su\u1ea5t m\u00e0i th\u1ea5p h\u01a1n \u0111\u1ec3 lo\u1ea1i b\u1ecf c\u00e1c c\u1ea1nh s\u1eafc, m\u1ed9t qu\u00e1 tr\u00ecnh l\u00e0m thay \u0111\u1ed5i m\u1eadt \u0111\u1ed9 c\u1ee7a v\u1eadt li\u1ec7u.<\/p>\n","protected":false},"author":7,"featured_media":108260,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[852],"tags":[],"class_list":["post-129149","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cong-nghiep-tin-tuc-vi"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/posts\/129149"}],"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\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/comments?post=129149"}],"version-history":[{"count":0,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/posts\/129149\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/media\/108260"}],"wp:attachment":[{"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/media?parent=129149"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/categories?post=129149"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/tags?post=129149"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}