![\"\"](\"https:\/\/www.alpapowder.com\/wp-content\/uploads\/2021\/10\/graphite-pic.jpg\")
<\/p>\n\u0110i\u1ec7n c\u1ef1c graphit ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c l\u00e0m t\u1eeb than c\u1ed1c d\u1ea7u m\u1ecf v\u00e0 than c\u1ed1c l\u00e0m nguy\u00ean li\u1ec7u th\u00f4, nh\u1ef1a than \u0111\u00e1 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m ch\u1ea5t k\u1ebft d\u00ednh v\u00e0 \u0111\u01b0\u1ee3c ch\u1ebf t\u1ea1o b\u1eb1ng c\u00e1ch nung, tr\u1ed9n, nh\u00e0o, \u00e9p, rang, graphit h\u00f3a v\u00e0 gia c\u00f4ng. N\u00f3 gi\u1ea3i ph\u00f3ng n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n d\u01b0\u1edbi d\u1ea1ng h\u1ed3 quang \u0111i\u1ec7n trong l\u00f2 \u0111i\u1ec7n h\u1ed3 quang. V\u1eadt d\u1eabn nhi\u1ec7t n\u00f3ng ch\u1ea3y \u0111i\u1ec7n t\u00edch.<\/p>\n
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Theo ch\u1ec9 s\u1ed1 ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a n\u00f3, n\u00f3 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c chia th\u00e0nh c\u00f4ng su\u1ea5t th\u00f4ng th\u01b0\u1eddng, c\u00f4ng su\u1ea5t cao v\u00e0 c\u00f4ng su\u1ea5t si\u00eau cao. \u0110i\u1ec7n c\u1ef1c graphit ch\u1ee7 y\u1ebfu bao g\u1ed3m b\u1ed1n lo\u1ea1i \u0111i\u1ec7n c\u1ef1c graphit c\u00f4ng su\u1ea5t th\u00f4ng th\u01b0\u1eddng, \u0111i\u1ec7n c\u1ef1c graphit ph\u1ee7 l\u1edbp ch\u1ed1ng oxy h\u00f3a, \u0111i\u1ec7n c\u1ef1c graphit c\u00f4ng su\u1ea5t cao v\u00e0 \u0111i\u1ec7n c\u1ef1c graphit si\u00eau cao.<\/p>\n
Cho ph\u00e9p s\u1eed d\u1ee5ng \u0111i\u1ec7n c\u1ef1c graphit c\u00f3 m\u1eadt \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n th\u1ea5p h\u01a1n 17A \/ cm2, \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ch\u1ee7 y\u1ebfu cho c\u00e1c l\u00f2 \u0111i\u1ec7n th\u00f4ng th\u01b0\u1eddng \u0111\u1ec3 luy\u1ec7n th\u00e9p, luy\u1ec7n silic v\u00e0 luy\u1ec7n ph\u1ed1t pho v\u00e0ng.<\/p>\n
\u0110i\u1ec7n c\u1ef1c graphit \u0111\u01b0\u1ee3c ph\u1ee7 m\u1ed9t l\u1edbp b\u1ea3o v\u1ec7 ch\u1ed1ng oxy h\u00f3a (ch\u1ea5t ch\u1ed1ng oxy h\u00f3a \u0111i\u1ec7n c\u1ef1c graphit) t\u1ea1o th\u00e0nh m\u1ed9t l\u1edbp b\u1ea3o v\u1ec7 v\u1eeba d\u1eabn \u0111i\u1ec7n v\u1eeba ch\u1ed1ng l\u1ea1i qu\u00e1 tr\u00ecnh oxy h\u00f3a \u1edf nhi\u1ec7t \u0111\u1ed9 cao, gi\u1ea3m ti\u00eau th\u1ee5 \u0111i\u1ec7n c\u1ef1c (19% -50%) trong qu\u00e1 tr\u00ecnh luy\u1ec7n th\u00e9p v\u00e0 k\u00e9o d\u00e0i th\u1eddi gian s\u1eed d\u1ee5ng \u0111i\u1ec7n c\u1ef1c Tu\u1ed5i th\u1ecd (22% ~ 60%), gi\u1ea3m ti\u00eau th\u1ee5 \u0111i\u1ec7n n\u0103ng c\u1ee7a \u0111i\u1ec7n c\u1ef1c.<\/p>\n
Cho ph\u00e9p s\u1eed d\u1ee5ng \u0111i\u1ec7n c\u1ef1c graphit v\u1edbi m\u1eadt \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n 18-25A \/ cm2, \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ch\u1ee7 y\u1ebfu trong c\u00e1c l\u00f2 \u0111i\u1ec7n h\u1ed3 quang c\u00f4ng su\u1ea5t l\u1edbn \u0111\u1ec3 luy\u1ec7n th\u00e9p.<\/p>\n
Cho ph\u00e9p s\u1eed d\u1ee5ng \u0111i\u1ec7n c\u1ef1c graphit v\u1edbi m\u1eadt \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n l\u1edbn h\u01a1n 25A \/ cm2 v\u00e0 ch\u00fang ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho c\u00e1c l\u00f2 \u0111i\u1ec7n h\u1ed3 quang luy\u1ec7n th\u00e9p c\u00f4ng su\u1ea5t c\u1ef1c cao.<\/p>\n
\u01afu \u0111i\u1ec3m: d\u1eabn \u0111i\u1ec7n t\u1ed1t, \u1ed5n \u0111\u1ecbnh h\u00f3a h\u1ecdc, ti\u00eau th\u1ee5 \u0111i\u1ec7n c\u1ef1c th\u1ea5p, t\u1ed1c \u0111\u1ed9 x\u1eed l\u00fd nhanh, hi\u1ec7u su\u1ea5t x\u1eed l\u00fd c\u01a1 h\u1ecdc t\u1ed1t, \u0111\u1ed9 ch\u00ednh x\u00e1c x\u1eed l\u00fd cao, bi\u1ebfn d\u1ea1ng nhi\u1ec7t nh\u1ecf, tr\u1ecdng l\u01b0\u1ee3ng nh\u1eb9, d\u1ec5 x\u1eed l\u00fd b\u1ec1 m\u1eb7t, ch\u1ecbu nhi\u1ec7t \u0111\u1ed9 cao, nhi\u1ec7t \u0111\u1ed9 x\u1eed l\u00fd cao, li\u00ean k\u1ebft \u0111i\u1ec7n c\u1ef1c.<\/p>\n
Nh\u01b0\u1ee3c \u0111i\u1ec3m: Chu k\u1ef3 s\u1ea3n xu\u1ea5t d\u00e0i (chu k\u1ef3 s\u1ea3n xu\u1ea5t th\u00f4ng th\u01b0\u1eddng c\u1ee7a \u0111i\u1ec7n c\u1ef1c graphit n\u00f3i chung l\u00e0 kho\u1ea3ng 90 ng\u00e0y, v\u00e0 vi\u1ec7c s\u1ea3n xu\u1ea5t c\u00e1c m\u1ed1i n\u1ed1i \u0111i\u1ec7n c\u1ef1c nhi\u1ec1u h\u01a1n b\u1ed1n quy tr\u00ecnh so v\u1edbi \u0111i\u1ec7n c\u1ef1c) v\u00e0 chi ph\u00ed cao.<\/p>\n
C\u00f3 n\u0103m y\u1ebfu t\u1ed1 ch\u00ednh \u0111\u1ec3 \u0111o hi\u1ec7u su\u1ea5t c\u1ee7a \u0111i\u1ec7n c\u1ef1c, \u0111\u00f3 l\u00e0 t\u1ed1c \u0111\u1ed9 x\u1eed l\u00fd, kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n, \u0111\u1ed9 ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t \u0111\u00e3 x\u1eed l\u00fd, kh\u1ea3 n\u0103ng x\u1eed l\u00fd v\u00e0 chi ph\u00ed v\u1eadt li\u1ec7u. \u0110i\u1ec7n c\u1ef1c \u0111\u1ed3ng th\u00edch h\u1ee3p \u0111\u1ec3 gia c\u00f4ng c\u00e1c ph\u00f4i c\u00f3 k\u00edch th\u01b0\u1edbc v\u1eeba v\u00e0 nh\u1ecf v\u1edbi y\u00eau c\u1ea7u v\u1ec1 \u0111\u1ed9 nh\u00e1m b\u1ec1 m\u1eb7t cao; trong khi graphite th\u00edch h\u1ee3p \u0111\u1ec3 gia c\u00f4ng c\u00e1c ph\u00f4i kh\u00e1c nhau v\u1edbi y\u00eau c\u1ea7u v\u1ec1 \u0111\u1ed9 nh\u00e1m di\u1ec7n t\u00edch th\u1ea5p, \u0111\u1ed9 ch\u00ednh x\u00e1c x\u1eed l\u00fd \u0111i\u1ec7n c\u1ef1c cao, \u0111\u01a1n gi\u00e1 v\u1eadt li\u1ec7u cao v\u00e0 t\u1ed1c \u0111\u1ed9 x\u1eed l\u00fd cao.<\/p>\n
Trong \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf, th\u1eddi gian x\u1eed l\u00fd c\u1ee7a \u0111i\u1ec7n c\u1ef1c graphit b\u1eb1ng 1\/2 so v\u1edbi \u0111i\u1ec7n c\u1ef1c \u0111\u1ed3ng v\u1edbi \u0111\u1ed9 ch\u00ednh x\u00e1c cao v\u00e0 t\u1ed1c \u0111\u1ed9 x\u1eed l\u00fd g\u1ea5p 1,5 l\u1ea7n so v\u1edbi \u0111i\u1ec7n c\u1ef1c \u0111\u1ed3ng. Theo th\u1ed1ng k\u00ea, n\u1ebfu s\u1eed d\u1ee5ng \u0111i\u1ec7n c\u1ef1c graphit \u0111\u1ec3 gia c\u00f4ng khu\u00f4n, khu\u00f4n nh\u1ecf c\u00f3 th\u1ec3 ti\u1ebft ki\u1ec7m \u0111\u01b0\u1ee3c 15.000 nh\u00e2n d\u00e2n t\u1ec7 m\u1ed9t b\u1ed9, khu\u00f4n c\u1ee1 trung b\u00ecnh c\u00f3 th\u1ec3 ti\u1ebft ki\u1ec7m 50.000 nh\u00e2n d\u00e2n t\u1ec7 m\u1ed9t b\u1ed9 v\u00e0 khu\u00f4n c\u1ee1 l\u1edbn c\u00f3 th\u1ec3 ti\u1ebft ki\u1ec7m 85.000 nh\u00e2n d\u00e2n t\u1ec7 m\u1ed9t b\u1ed9.<\/p>\n
Trong quy tr\u00ecnh EDM, dao b\u1ea5m l\u00e0 y\u1ebfu t\u1ed1 quy\u1ebft \u0111\u1ecbnh ch\u00ednh c\u1ee7a hi\u1ec7u qu\u1ea3 gia c\u00f4ng. C\u00e1c \u0111i\u1ec7n c\u1ef1c c\u1ee7a c\u00e1c v\u1eadt li\u1ec7u kh\u00e1c nhau c\u00f3 t\u00e1c \u0111\u1ed9ng l\u1edbn h\u01a1n \u0111\u1ebfn hi\u1ec7u qu\u1ea3 x\u1eed l\u00fd, t\u1ed5n th\u1ea5t \u0111i\u1ec7n c\u1ef1c v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng b\u1ec1 m\u1eb7t. \u0110i\u1ec7n c\u1ef1c graphite hi\u1ec7u su\u1ea5t cao c\u00f3 nh\u1eefng \u01b0u \u0111i\u1ec3m duy nh\u1ea5t l\u00e0 bi\u1ebfn d\u1ea1ng nh\u1ecf, \u1ed5n \u0111\u1ecbnh nhi\u1ec7t t\u1ed1t, hi\u1ec7u su\u1ea5t ph\u00f3ng \u0111i\u1ec7n cao, t\u1ed5n th\u1ea5t th\u1ea5p, d\u1eabn \u0111i\u1ec7n t\u1ed1t, m\u1eadt \u0111\u1ed9 th\u1ea5p, kh\u00f4ng g\u00e2y \u00f4 nhi\u1ec5m m\u00f4i tr\u01b0\u1eddng v\u00e0 c\u00f3 kh\u1ea3 n\u0103ng t\u00e1i t\u1ea1o. N\u00f3 l\u00e0 m\u1ed9t v\u1eadt li\u1ec7u \u0111i\u1ec7n c\u1ef1c l\u00fd t\u01b0\u1edfng. \u1ede Ch\u00e2u \u00c2u, h\u01a1n 90% v\u1eadt li\u1ec7u \u0111i\u1ec7n c\u1ef1c \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong EDM l\u00e0 than ch\u00ec.<\/p>\n
Theo m\u1eadt \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n l\u00e0m vi\u1ec7c, \u0111i\u1ec7n c\u1ef1c graphit \u0111\u01b0\u1ee3c chia th\u00e0nh \u0111i\u1ec7n c\u1ef1c graphit th\u00f4ng th\u01b0\u1eddng (RP), \u0111i\u1ec7n c\u1ef1c graphit c\u00f4ng su\u1ea5t cao (HP) v\u00e0 \u0111i\u1ec7n c\u1ef1c graphit si\u00eau cao (UHP). C\u00e1c n\u01b0\u1edbc s\u1ea3n xu\u1ea5t v\u00e0 xu\u1ea5t kh\u1ea9u \u0111i\u1ec7n c\u1ef1c than ch\u00ec ch\u00ednh ra n\u01b0\u1edbc ngo\u00e0i l\u00e0 Hoa K\u1ef3, \u0110\u1ee9c v\u00e0 Nh\u1eadt B\u1ea3n.<\/p>\n
Nguy\u00ean li\u1ec7u th\u00f4 c\u1ee7a \u0111i\u1ec7n c\u1ef1c graphit bao g\u1ed3m than c\u1ed1c, than \u0111\u00e1, c\u1ed1c nung, c\u1ed1c kim v\u00e0 c\u00e1c nguy\u00ean li\u1ec7u th\u00f4 ch\u00ednh kh\u00e1c. Gi\u00e1 than c\u1ed1c, nguy\u00ean li\u1ec7u ch\u00ednh cho \u0111i\u1ec7n c\u1ef1c than ch\u00ec, t\u0103ng m\u1ea1nh nh\u1ea5t, v\u1edbi m\u1ee9c cao nh\u1ea5t l\u00e0 67% trong m\u1ed9t ng\u00e0y. Than kim chi\u1ebfm 70% t\u1ed5ng chi ph\u00ed c\u1ee7a \u0111i\u1ec7n c\u1ef1c graphit, v\u00e0 c\u00e1c \u0111i\u1ec7n c\u1ef1c graphit c\u00f4ng su\u1ea5t c\u1ef1c cao c\u1ea7n ti\u00eau th\u1ee5 1,05 t\u1ea5n than kim. Kim coke c\u0169ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong pin lithium, n\u0103ng l\u01b0\u1ee3ng h\u1ea1t nh\u00e2n, h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 v\u00e0 c\u00e1c l\u0129nh v\u1ef1c kh\u00e1c.<\/p>\n
<\/p>\n
Ngu\u1ed3n b\u00e0i vi\u1ebft: China Powder Network<\/p>\n","protected":false},"excerpt":{"rendered":"
\u0110i\u1ec7n c\u1ef1c graphit ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c l\u00e0m t\u1eeb than c\u1ed1c d\u1ea7u m\u1ecf v\u00e0 than c\u1ed1c l\u00e0m nguy\u00ean li\u1ec7u th\u00f4, nh\u1ef1a than \u0111\u00e1 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m ch\u1ea5t k\u1ebft d\u00ednh v\u00e0 \u0111\u01b0\u1ee3c ch\u1ebf t\u1ea1o b\u1eb1ng c\u00e1ch nung, tr\u1ed9n, nh\u00e0o, \u00e9p, rang, graphit h\u00f3a v\u00e0 gia c\u00f4ng. N\u00f3 gi\u1ea3i ph\u00f3ng n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n d\u01b0\u1edbi d\u1ea1ng h\u1ed3 quang \u0111i\u1ec7n trong l\u00f2 \u0111i\u1ec7n h\u1ed3 quang. V\u1eadt d\u1eabn nhi\u1ec7t n\u00f3ng ch\u1ea3y \u0111i\u1ec7n t\u00edch.<\/p>\n","protected":false},"author":6,"featured_media":112131,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[852],"tags":[921,922,923],"class_list":["post-113388","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cong-nghiep-tin-tuc-vi","tag-dien-cuc-than-chi","tag-thi-truong-dien-cuc-than-chi","tag-ung-dung-cua-dien-cuc-than-chi"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/posts\/113388","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=113388"}],"version-history":[{"count":0,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/posts\/113388\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/media\/112131"}],"wp:attachment":[{"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/media?parent=113388"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/categories?post=113388"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/tags?post=113388"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}