{"id":3739,"date":"2026-06-09T15:17:18","date_gmt":"2026-06-09T07:17:18","guid":{"rendered":"https:\/\/quartz-grinding.epic-powder.com\/?p=3739"},"modified":"2026-06-09T15:17:22","modified_gmt":"2026-06-09T07:17:22","slug":"how-to-eliminate-iron-contamination-in-fine-quartz-grinding-processes","status":"publish","type":"post","link":"https:\/\/quartz-grinding.epic-powder.com\/vi\/how-to-eliminate-iron-contamination-in-fine-quartz-grinding-processes\/","title":{"rendered":"L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 lo\u1ea1i b\u1ecf t\u1ea1p ch\u1ea5t s\u1eaft trong qu\u00e1 tr\u00ecnh nghi\u1ec1n th\u1ea1ch anh m\u1ecbn?"},"content":{"rendered":"

L\u00e0 m\u1ed9t kho\u00e1ng ch\u1ea5t c\u00f4ng nghi\u1ec7p quan tr\u1ecdng, th\u1ea1ch anh \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00e1c l\u0129nh v\u1ef1c nh\u01b0 \u0111i\u1ec7n t\u1eed v\u00e0 c\u00f4ng ngh\u1ec7 th\u00f4ng tin, k\u00ednh quang \u0111i\u1ec7n, ch\u1ea5t b\u00e1n d\u1eabn, n\u1ed3i n\u1ea5u th\u1ea1ch anh, v\u1eadt li\u1ec7u quang h\u1ecdc, g\u1ed1m s\u1ee9 v\u00e0 l\u1edbp ph\u1ee7 cao c\u1ea5p. Y\u00eau c\u1ea7u v\u1ec1 \u0111\u1ed9 tinh khi\u1ebft c\u1ee7a c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p h\u1ea1 ngu\u1ed3n ng\u00e0y c\u00e0ng t\u0103ng, \u0111\u1eb7c bi\u1ec7t l\u00e0 trong l\u0129nh v\u1ef1c th\u1ea1ch anh c\u00f3 \u0111\u1ed9 tinh khi\u1ebft cao. Do \u0111\u00f3, t\u1ea1p ch\u1ea5t s\u1eaft \u0111\u00e3 tr\u1edf th\u00e0nh m\u1ed9t trong nh\u1eefng y\u1ebfu t\u1ed1 ch\u00ednh \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m. Trong qu\u00e1 tr\u00ecnh ch\u1ebf bi\u1ebfn th\u1ea1ch anh, nghi\u1ec1n m\u1ecbn l\u00e0 m\u1ed9t b\u01b0\u1edbc quan tr\u1ecdng \u0111\u1ec3 ki\u1ec3m so\u00e1t k\u00edch th\u01b0\u1edbc h\u1ea1t v\u00e0 t\u00e1ch c\u00e1c h\u1ea1t ri\u00eang l\u1ebb. Tuy nhi\u00ean, v\u1eadt li\u1ec7u nghi\u1ec1n, l\u1edbp l\u00f3t v\u00e0 s\u1ef1 m\u00e0i m\u00f2n thi\u1ebft b\u1ecb trong m\u00e1y nghi\u1ec1n m\u1ecbn c\u00f3 th\u1ec3 g\u00e2y ra \u00f4 nhi\u1ec5m s\u1eaft m\u1edbi. S\u1ef1 \u00f4 nhi\u1ec5m n\u00e0y l\u00e0m t\u0103ng h\u00e0m l\u01b0\u1ee3ng Fe\u2082O\u2083 trong c\u00e1c s\u1ea3n ph\u1ea9m th\u1ea1ch anh. \u0110\u1ed1i v\u1edbi c\u00e1c s\u1ea3n ph\u1ea9m th\u1ea1ch anh cao c\u1ea5p y\u00eau c\u1ea7u h\u00e0m l\u01b0\u1ee3ng Fe\u2082O\u2083 d\u01b0\u1edbi 100 ppm, ho\u1eb7c th\u1eadm ch\u00ed ch\u1ec9 v\u00e0i ch\u1ee5c ppm, ngay c\u1ea3 m\u1ed9t l\u01b0\u1ee3ng nh\u1ecf t\u1ea1p ch\u1ea5t s\u1eaft c\u0169ng c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m v\u00e0 \u1ea3nh h\u01b0\u1edfng ti\u00eau c\u1ef1c \u0111\u1ebfn gi\u00e1 tr\u1ecb th\u1ecb tr\u01b0\u1eddng.<\/p>\n\n\n\n

V\u1eady, ngu\u1ed3n g\u1ed1c ch\u00ednh x\u00e1c c\u1ee7a s\u1ef1 nhi\u1ec5m b\u1ea9n s\u1eaft trong qu\u00e1 tr\u00ecnh nghi\u1ec1n m\u1ecbn th\u1ea1ch anh \u0111\u1ebfn t\u1eeb \u0111\u00e2u? V\u00e0 l\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 ki\u1ec3m so\u00e1t v\u00e0 lo\u1ea1i b\u1ecf n\u00f3 m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3?<\/p>\n\n\n\n

\"Nghi\u1ec1n
Nghi\u1ec1n th\u1ea1ch anh si\u00eau m\u1ecbn<\/figcaption><\/figure>\n\n\n\n

C\u00e1c ngu\u1ed3n g\u00e2y \u00f4 nhi\u1ec5m s\u1eaft ch\u00ednh trong Nghi\u1ec1n m\u1ecbn th\u1ea1ch anh<\/a><\/h2>\n\n\n\n

Tr\u01b0\u1edbc khi ph\u00e2n t\u00edch c\u00e1c gi\u1ea3i ph\u00e1p, c\u1ea7n ph\u1ea3i l\u00e0m r\u00f5 ngu\u1ed3n g\u1ed1c c\u1ee7a s\u1ef1 \u00f4 nhi\u1ec5m s\u1eaft.<\/p>\n\n\n\n

1. S\u1ef1 m\u00e0i m\u00f2n c\u1ee7a v\u1eadt li\u1ec7u m\u00e0i<\/h3>\n\n\n\n

C\u00e1c thi\u1ebft b\u1ecb nh\u01b0 m\u00e1y nghi\u1ec1n bi v\u00e0 m\u00e1y nghi\u1ec1n khu\u1ea5y th\u01b0\u1eddng s\u1eed d\u1ee5ng bi th\u00e9p, bi r\u00e8n ho\u1eb7c thanh th\u00e9p l\u00e0m v\u1eadt li\u1ec7u nghi\u1ec1n. Trong qu\u00e1 tr\u00ecnh v\u1eadn h\u00e0nh l\u00e2u d\u00e0i, c\u00e1c v\u1eadt li\u1ec7u th\u00e9p n\u00e0y li\u00ean t\u1ee5c b\u1ecb m\u00e0i m\u00f2n.
C\u00e1c m\u1ea1t s\u1eaft v\u00e0 h\u1ea1t oxit s\u1eaft sinh ra do qu\u00e1 tr\u00ecnh m\u00e0i m\u00f2n n\u00e0y \u0111\u01b0\u1ee3c tr\u1ed9n tr\u1ef1c ti\u1ebfp v\u00e0o b\u1ed9t th\u1ea1ch anh, tr\u1edf th\u00e0nh m\u1ed9t trong nh\u1eefng ngu\u1ed3n g\u00e2y \u00f4 nhi\u1ec5m s\u1eaft ch\u00ednh. V\u1ea5n \u0111\u1ec1 n\u00e0y \u0111\u1eb7c bi\u1ec7t nghi\u00eam tr\u1ecdng trong giai \u0111o\u1ea1n nghi\u1ec1n si\u00eau m\u1ecbn, v\u00ec t\u1ea7n su\u1ea5t ti\u1ebfp x\u00fac gi\u1eefa v\u1eadt li\u1ec7u v\u00e0 m\u00f4i tr\u01b0\u1eddng nghi\u1ec1n tr\u00ean m\u1ed7i \u0111\u01a1n v\u1ecb th\u1eddi gian t\u0103ng l\u00ean \u0111\u00e1ng k\u1ec3.<\/p>\n\n\n\n

2. S\u1ef1 m\u00e0i m\u00f2n c\u1ee7a c\u00e1c t\u1ea5m l\u00f3t v\u00e0 th\u00e0nh trong c\u1ee7a thi\u1ebft b\u1ecb<\/h3>\n\n\n\n

C\u00e1c m\u00e1y nghi\u1ec1n bi truy\u1ec1n th\u1ed1ng th\u01b0\u1eddng s\u1eed d\u1ee5ng c\u00e1c t\u1ea5m l\u00f3t b\u1eb1ng th\u00e9p mangan cao ho\u1eb7c th\u00e9p h\u1ee3p kim. Khi m\u1ed9t kho\u00e1ng ch\u1ea5t c\u00f3 \u0111\u1ed9 c\u1ee9ng cao nh\u01b0 th\u1ea1ch anh li\u00ean t\u1ee5c va \u0111\u1eadp v\u00e0o th\u00e0nh b\u00ean trong c\u1ee7a thi\u1ebft b\u1ecb, c\u00e1c t\u1ea5m l\u00f3t s\u1ebd d\u1ea7n b\u1ecb m\u00f2n. \u0110i\u1ec1u n\u00e0y gi\u1ea3i ph\u00f3ng c\u00e1c nguy\u00ean t\u1ed1 s\u1eaft v\u00e0o d\u00f2ng s\u1ea3n ph\u1ea9m. V\u1edbi \u0111\u1ed9 c\u1ee9ng Mohs l\u00e0 7, th\u1ea1ch anh c\u00f3 t\u00ednh m\u00e0i m\u00f2n cao h\u01a1n nhi\u1ec1u so v\u1edbi c\u00e1c kho\u00e1ng ch\u1ea5t th\u00f4ng th\u01b0\u1eddng, d\u1eabn \u0111\u1ebfn s\u1ef1 m\u00e0i m\u00f2n thi\u1ebft b\u1ecb nhanh h\u01a1n.<\/p>\n\n\n\n

3. S\u1ef1 nhi\u1ec5m b\u1ea9n t\u1eeb h\u1ec7 th\u1ed1ng v\u1eadn chuy\u1ec3n<\/h3>\n\n\n\n

B\u00ean c\u1ea1nh ch\u00ednh nh\u00e0 m\u00e1y, c\u00e1c thi\u1ebft b\u1ecb ph\u1ee5 tr\u1ee3 nh\u01b0 thang m\u00e1y, b\u0103ng t\u1ea3i tr\u1ee5c v\u00edt, \u0111\u01b0\u1eddng \u1ed1ng v\u00e0 silo c\u0169ng c\u00f3 th\u1ec3 g\u00f3p ph\u1ea7n g\u00e2y \u00f4 nhi\u1ec5m s\u1eaft.
\u0110\u1eb7c bi\u1ec7t trong qu\u00e1 tr\u00ecnh v\u1eadn chuy\u1ec3n b\u1ed9t t\u1ed1c \u0111\u1ed9 cao, ma s\u00e1t th\u01b0\u1eddng xuy\u00ean gi\u1eefa c\u00e1c h\u1ea1t v\u00e0 b\u1ec1 m\u1eb7t kim lo\u1ea1i c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng d\u1eabn \u0111\u1ebfn \u00f4 nhi\u1ec5m th\u1ee9 c\u1ea5p.<\/p>\n\n\n\n

4. T\u1ea1p ch\u1ea5t s\u1eaft trong qu\u1eb7ng th\u00f4<\/h3>\n\n\n\n

\u0110\u00f4i khi, khi h\u00e0m l\u01b0\u1ee3ng s\u1eaft \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n v\u01b0\u1ee3t qu\u00e1 ti\u00eau chu\u1ea9n, nguy\u00ean nh\u00e2n kh\u00f4ng ho\u00e0n to\u00e0n l\u00e0 do thi\u1ebft b\u1ecb b\u1ecb nhi\u1ec5m b\u1ea9n. Qu\u1eb7ng th\u1ea1ch anh th\u00f4 c\u00f3 th\u1ec3 ch\u1ee9a: hematit, limonit, magnetit, pyrit, biotit v\u00e0 hornblende. C\u00e1c kho\u00e1ng ch\u1ea5t ch\u1ee9a s\u1eaft n\u00e0y \u0111\u01b0\u1ee3c gi\u1ea3i ph\u00f3ng ho\u00e0n to\u00e0n sau khi nghi\u1ec1n m\u1ecbn, gi\u00fap d\u1ec5 d\u00e0ng ph\u00e1t hi\u1ec7n c\u00e1c nguy\u00ean t\u1ed1 s\u1eaft h\u01a1n. Do \u0111\u00f3, \u0111i\u1ec1u c\u1ea7n thi\u1ebft l\u00e0 ph\u1ea3i ph\u00e2n bi\u1ec7t gi\u1eefa \u201cs\u1eaft nguy\u00ean ch\u1ea5t\u201d v\u00e0 \u201cs\u1ef1 nhi\u1ec5m b\u1ea9n s\u1eaft do qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t g\u00e2y ra\u201d.<\/p>\n\n\n\n

Gi\u1ea3m thi\u1ec3u \u00f4 nhi\u1ec5m s\u1eaft th\u00f4ng qua vi\u1ec7c l\u1ef1a ch\u1ecdn thi\u1ebft b\u1ecb.<\/h2>\n\n\n\n
\"m\u00e1y
m\u00e1y nghi\u1ec1n bi \u0111\u1ec3 nghi\u1ec1n th\u1ea1ch anh<\/figcaption><\/figure>\n\n\n\n

1. L\u1ef1a ch\u1ecdn g\u1ed1m s\u1ee9 M\u00e1y nghi\u1ec1n bi<\/a> Lo\u1ea1i b\u1ecf t\u1ea1p ch\u1ea5t s\u1eaft trong qu\u00e1 tr\u00ecnh nghi\u1ec1n<\/h3>\n\n\n\n

So v\u1edbi m\u00e1y nghi\u1ec1n bi th\u00e9p truy\u1ec1n th\u1ed1ng, m\u00e1y nghi\u1ec1n bi g\u1ed1m lo\u1ea1i b\u1ecf ho\u00e0n to\u00e0n ngu\u1ed3n s\u1eaft nh\u1edd thi\u1ebft k\u1ebf thi\u1ebft b\u1ecb v\u00e0 v\u1eadt li\u1ec7u nghi\u1ec1n. Ch\u00fang l\u00e0 l\u1ef1a ch\u1ecdn \u01b0u ti\u00ean cho c\u00e1c quy tr\u00ecnh nghi\u1ec1n th\u1ea1ch anh c\u00f3 \u0111\u1ed9 tinh khi\u1ebft cao.<\/p>\n\n\n\n

C\u1ea5u h\u00ecnh l\u00f5i kh\u00f4ng ch\u1ee9a s\u1eaft:<\/strong><\/p>\n\n\n\n

To\u00e0n b\u1ed9 thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c trang b\u1ecb l\u1edbp l\u00f3t g\u1ed1m v\u00e0 s\u1eed d\u1ee5ng v\u1eadt li\u1ec7u m\u00e0i phi kim lo\u1ea1i nh\u01b0 bi alumina, bi zirconia v\u00e0 bi silica. To\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng m\u00e0i kh\u00f4ng ti\u1ebfp x\u00fac v\u1edbi v\u1eadt li\u1ec7u th\u00e9p, d\u1eabn \u0111\u1ebfn h\u1ea7u nh\u01b0 kh\u00f4ng c\u00f3 s\u1ef1 nhi\u1ec5m b\u1ea9n s\u1eaft. \u0110i\u1ec1u n\u00e0y v\u1ec1 c\u01a1 b\u1ea3n ng\u0103n ng\u1eeba s\u1ef1 nhi\u1ec5m b\u1ea9n s\u1eaft do t\u00e1c \u0111\u1ed9ng c\u01a1 h\u1ecdc trong qu\u00e1 tr\u00ecnh m\u00e0i.<\/p>\n\n\n\n

\u1ee8ng d\u1ee5ng:<\/strong><\/p>\n\n\n\n

Thi\u1ebft b\u1ecb n\u00e0y \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong s\u1ea3n xu\u1ea5t v\u00e0 ch\u1ebf bi\u1ebfn c\u00e1c s\u1ea3n ph\u1ea9m th\u1ea1ch anh c\u00f3 \u0111\u1ed9 tinh khi\u1ebft cao.
S\u1ea3n ph\u1ea9m n\u00e0y ph\u00f9 h\u1ee3p v\u1edbi th\u1ea1ch anh c\u00f3 \u0111\u1ed9 tinh khi\u1ebft cao, th\u1ea1ch anh d\u00f9ng trong \u0111i\u1ec7n t\u1eed, c\u00e1t th\u1ea1ch anh d\u00f9ng trong quang \u0111i\u1ec7n v\u00e0 v\u1eadt li\u1ec7u th\u1ea1ch anh b\u00e1n d\u1eabn. N\u00f3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 tinh khi\u1ebft c\u1ee7a v\u1eadt li\u1ec7u m\u1ed9t c\u00e1ch \u0111\u00e1ng tin c\u1eady.<\/p>\n\n\n\n

2. S\u1eed d\u1ee5ng m\u1ed9t m\u00e1y nghi\u1ec1n kh\u00ed n\u00e9n <\/a>h\u1ec7 th\u1ed1ng nh\u1eb1m \u0111\u1ea1t \u0111\u01b0\u1ee3c m\u1ee9c \u0111\u1ed9 nhi\u1ec5m b\u1ea9n s\u1eaft c\u1ef1c th\u1ea5p trong qu\u00e1 tr\u00ecnh nghi\u1ec1n<\/h3>\n\n\n\n

M\u00e1y nghi\u1ec1n kh\u00ed n\u00e9n l\u00e0 m\u1ed9t trong nh\u1eefng thi\u1ebft b\u1ecb c\u1ed1t l\u00f5i l\u00fd t\u01b0\u1edfng nh\u1ea5t \u0111\u1ec3 ki\u1ec3m so\u00e1t s\u1ef1 nhi\u1ec5m b\u1ea9n s\u1eaft trong qu\u00e1 tr\u00ecnh nghi\u1ec1n v\u00e0 gia c\u00f4ng c\u00e1c v\u1eadt li\u1ec7u th\u1ea1ch anh c\u00f3 \u0111\u1ed9 tinh khi\u1ebft cao v\u00e0 si\u00eau cao.<\/p>\n\n\n\n

Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng:<\/strong><\/p>\n\n\n\n

Thi\u1ebft b\u1ecb n\u00e0y d\u1ef1a v\u00e0o lu\u1ed3ng kh\u00ed t\u1ed1c \u0111\u1ed9 cao \u0111\u1ec3 \u0111\u1ea9y c\u00e1c h\u1ea1t th\u1ea1ch anh va ch\u1ea1m v\u00e0 c\u1ecd x\u00e1t v\u00e0o nhau, t\u1eeb \u0111\u00f3 \u0111\u1ea1t \u0111\u01b0\u1ee3c hi\u1ec7u qu\u1ea3 nghi\u1ec1n v\u1eadt li\u1ec7u. To\u00e0n b\u1ed9 qu\u00e1 tr\u00ecnh nghi\u1ec1n kh\u00f4ng c\u1ea7n \u0111\u1ebfn c\u00e1c v\u1eadt li\u1ec7u nghi\u1ec1n c\u01a1 h\u1ecdc truy\u1ec1n th\u1ed1ng. Kh\u00f4ng c\u00f3 th\u00e0nh ph\u1ea7n th\u00e9p n\u00e0o nh\u01b0 bi th\u00e9p ho\u1eb7c t\u1ea5m l\u00f3t th\u00e9p tham gia v\u00e0o qu\u00e1 tr\u00ecnh nghi\u1ec1n. \u0110i\u1ec1u n\u00e0y lo\u1ea1i b\u1ecf ho\u00e0n to\u00e0n s\u1ef1 nhi\u1ec5m b\u1ea9n s\u1eaft do ti\u1ebfp x\u00fac c\u01a1 h\u1ecdc v\u00e0 gi\u1ea3m \u0111\u00e1ng k\u1ec3 h\u00e0m l\u01b0\u1ee3ng s\u1eaft trong s\u1ea3n ph\u1ea9m.<\/p>\n\n\n\n

C\u00e1c m\u1eabu m\u00e1y \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb cho c\u00e1c s\u1ea3n ph\u1ea9m c\u00f3 \u0111\u1ed9 tinh khi\u1ebft cao:<\/strong><\/p>\n\n\n\n

\u0110\u1ec3 \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u x\u1eed l\u00fd s\u1ea3n ph\u1ea9m th\u1ea1ch anh c\u00f3 \u0111\u1ed9 tinh khi\u1ebft c\u1ef1c cao v\u00e0 k\u00edch th\u01b0\u1edbc h\u1ea1t si\u00eau m\u1ecbn, c\u00f3 th\u1ec3 l\u1ef1a ch\u1ecdn m\u00e1y nghi\u1ec1n kh\u00ed t\u1ea7ng s\u00f4i, m\u00e1y nghi\u1ec1n kh\u00ed ng\u01b0\u1ee3c d\u00f2ng ho\u1eb7c m\u00e1y nghi\u1ec1n kh\u00ed h\u01a1i n\u01b0\u1edbc. C\u00e1c thi\u1ebft b\u1ecb n\u00e0y c\u00e2n b\u1eb1ng gi\u1eefa hi\u1ec7u su\u1ea5t nghi\u1ec1n si\u00eau m\u1ecbn v\u1edbi nhu c\u1ea7u gi\u1ea3m thi\u1ec3u t\u1ed1i \u0111a t\u1ea1p ch\u1ea5t.<\/p>\n\n\n\n

3. L\u1eafp \u0111\u1eb7t l\u1edbp l\u00f3t b\u1ea3o v\u1ec7 b\u1eb1ng g\u1ed1m ch\u1ed1ng m\u00e0i m\u00f2n \u0111\u1ec3 ng\u0103n ng\u1eeba s\u1ef1 nhi\u1ec5m b\u1ea9n s\u1eaft trong to\u00e0n b\u1ed9 quy tr\u00ecnh.<\/h3>\n\n\n\n

Vi\u1ec7c l\u1eafp \u0111\u1eb7t l\u1edbp l\u00f3t g\u1ed1m ch\u1ed1ng m\u00e0i m\u00f2n phi kim lo\u1ea1i t\u1ea1i c\u00e1c \u0111i\u1ec3m quan tr\u1ecdng trong to\u00e0n b\u1ed9 quy tr\u00ecnh\u2014bao g\u1ed3m nghi\u1ec1n si\u00eau m\u1ecbn, v\u1eadn chuy\u1ec3n v\u1eadt li\u1ec7u v\u00e0 thu gom\u2014l\u00e0 m\u1ed9t bi\u1ec7n ph\u00e1p quan tr\u1ecdng gi\u00fap gi\u1ea3m thi\u1ec3u \u00f4 nhi\u1ec5m s\u1eaft. Thi\u1ebft b\u1ecb x\u1eed l\u00fd si\u00eau m\u1ecbn hi\u1ec7n \u0111\u1ea1i \u0111\u1ec3 s\u1ea3n xu\u1ea5t th\u1ea1ch anh tinh khi\u1ebft cao th\u01b0\u1eddng s\u1eed d\u1ee5ng v\u1eadt li\u1ec7u g\u1ed1m hi\u1ec7u su\u1ea5t cao \u0111\u1ec3 b\u1ea3o v\u1ec7 l\u1edbp l\u00f3t b\u00ean trong.<\/p>\n\n\n\n

C\u00e1c v\u1eadt li\u1ec7u b\u1ea3o h\u1ed9 th\u00f4ng th\u01b0\u1eddng:<\/strong><\/p>\n\n\n\n

G\u1ed1m alumina, g\u1ed1m zirconia v\u00e0 g\u1ed1m silicon carbide c\u00f3 \u0111\u1eb7c \u0111i\u1ec3m l\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n cao, \u0111\u1ed9 c\u1ee9ng cao v\u00e0 kh\u00f4ng b\u1ecb r\u00f2 r\u1ec9 s\u1eaft.<\/p>\n\n\n\n

C\u00e1c khu v\u1ef1c b\u1ea3o v\u1ec7 tr\u1ecdng \u0111i\u1ec3m:<\/strong><\/p>\n\n\n\n

Vi\u1ec7c gia c\u1ed1 l\u1edbp l\u00f3t g\u1ed1m \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n tr\u00ean c\u00e1c khu v\u1ef1c ti\u1ebfp x\u00fac tr\u1ef1c ti\u1ebfp v\u1edbi v\u1eadt li\u1ec7u nh\u01b0 bu\u1ed3ng nghi\u1ec1n, b\u00e1nh xe ph\u00e2n lo\u1ea1i, \u1ed1ng d\u1eabn v\u00e0 b\u1ed9 thu ly t\u00e2m. \u0110i\u1ec1u n\u00e0y \u0111\u1ea3m b\u1ea3o v\u1eadt li\u1ec7u kh\u00f4ng ti\u1ebfp x\u00fac v\u1edbi s\u1eaft v\u00e0 th\u00e9p trong su\u1ed1t to\u00e0n b\u1ed9 qu\u00e1 tr\u00ecnh, gi\u1ea3m thi\u1ec3u s\u1ef1 x\u00e2m nh\u1eadp v\u00e0 \u00f4 nhi\u1ec5m s\u1eaft ngay t\u1eeb ngu\u1ed3n g\u1ed1c c\u1ee7a qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t.<\/p>\n\n\n\n

\"m\u00e1y<\/figure>\n\n\n\n

Lo\u1ea1i b\u1ecf \u00f4 nhi\u1ec5m s\u1eaft t\u1eeb g\u00f3c \u0111\u1ed9 quy tr\u00ecnh<\/h2>\n\n\n\n

Ngay c\u1ea3 khi s\u1eed d\u1ee5ng thi\u1ebft b\u1ecb c\u00f3 \u0111\u1ed9 nhi\u1ec5m b\u1ea9n th\u1ea5p, v\u1eabn c\u1ea7n ph\u1ea3i lo\u1ea1i b\u1ecf th\u00eam s\u1eaft th\u00f4ng qua c\u00e1c quy tr\u00ecnh ti\u1ebfp theo.<\/p>\n\n\n\n

T\u00e1ch t\u1eeb t\u00ednh \u0111\u1ec3 lo\u1ea1i b\u1ecf s\u1eaft<\/h3>\n\n\n\n

T\u00e1ch t\u1eeb l\u00e0 ph\u01b0\u01a1ng ph\u00e1p ph\u1ed5 bi\u1ebfn nh\u1ea5t \u0111\u1ec3 lo\u1ea1i b\u1ecf s\u1eaft trong ng\u00e0nh c\u00f4ng nghi\u1ec7p th\u1ea1ch anh. T\u00f9y thu\u1ed9c v\u00e0o s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 t\u1eeb t\u00ednh c\u1ee7a kho\u00e1ng ch\u1ea5t, c\u00e1c ph\u01b0\u01a1ng ph\u00e1p sau \u0111\u00e2y c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng:<\/p>\n\n\n\n

Ph\u00e2n t\u00e1ch t\u1eeb t\u00ednh y\u1ebfu:<\/strong> Ch\u1ee7 y\u1ebfu lo\u1ea1i b\u1ecf: magnetit v\u00e0 m\u1ea1t s\u1eaft c\u00f3 t\u1eeb t\u00ednh m\u1ea1nh.<\/p>\n\n\n\n

Ph\u00e2n t\u00e1ch t\u1eeb m\u1ea1nh:<\/strong> Ch\u1ee7 y\u1ebfu lo\u1ea1i b\u1ecf: hematit, limonit v\u00e0 ilmenit.
Khai th\u00e1c s\u1eaft b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p ng\u00e2m t\u1ea9m axit<\/p>\n\n\n\n

Ph\u01b0\u01a1ng ph\u00e1p l\u1ecdc axit \u0111\u1ec3 lo\u1ea1i b\u1ecf s\u1eaft: <\/strong>\u0110\u1ed1i v\u1edbi s\u1ef1 nhi\u1ec5m b\u1ea9n s\u1eaft \u0111\u00e3 b\u00e1m d\u00ednh tr\u00ean b\u1ec1 m\u1eb7t th\u1ea1ch anh, ph\u01b0\u01a1ng ph\u00e1p t\u00e1ch t\u1eeb t\u00ednh \u0111\u01a1n thu\u1ea7n th\u01b0\u1eddng kh\u00f4ng \u0111\u1ee7 \u0111\u1ec3 lo\u1ea1i b\u1ecf ho\u00e0n to\u00e0n. Trong nh\u1eefng tr\u01b0\u1eddng h\u1ee3p nh\u01b0 v\u1eady, c\u1ea7n ph\u1ea3i th\u1ef1c hi\u1ec7n qu\u00e1 tr\u00ecnh r\u1eeda tr\u00f4i b\u1eb1ng axit.<\/p>\n\n\n\n

C\u00e1c lo\u1ea1i axit ph\u1ed5 bi\u1ebfn bao g\u1ed3m:<\/strong> Axit clohydric, axit sulfuric, axit oxalic v\u00e0 c\u00e1c h\u1ec7 axit h\u1ed7n h\u1ee3p. Trong s\u1ed1 n\u00e0y, axit oxalic th\u1ec3 hi\u1ec7n t\u00e1c d\u1ee5ng t\u1ea1o ph\u1ee9c m\u1ea1nh v\u1edbi oxit s\u1eaft.<\/p>\n\n\n\n

M\u1ecdi ng\u01b0\u1eddi c\u0169ng h\u1ecfi<\/h2>\n\n\n\n

C\u00e2u h\u1ecfi 1: Vi\u1ec7c s\u1eed d\u1ee5ng thi\u1ebft b\u1ecb b\u1eb1ng th\u00e9p kh\u00f4ng g\u1ec9 c\u00f3 th\u1ec3 ng\u0103n ng\u1eeba ho\u00e0n to\u00e0n s\u1ef1 nhi\u1ec5m b\u1ea9n s\u1eaft kh\u00f4ng?<\/h3>\n\n\n\n

C\u00e2u tr\u1ea3 l\u1eddi l\u00e0 kh\u00f4ng.
Nhi\u1ec1u c\u00f4ng ty tin r\u1eb1ng v\u00ec th\u00e9p kh\u00f4ng g\u1ec9 kh\u00f4ng b\u1ecb g\u1ec9 s\u00e9t n\u00ean s\u1ebd kh\u00f4ng g\u00e2y \u00f4 nhi\u1ec5m s\u1eaft. Tr\u00ean th\u1ef1c t\u1ebf, th\u00e9p kh\u00f4ng g\u1ec9 v\u1eabn ch\u1ee9a m\u1ed9t t\u1ef7 l\u1ec7 s\u1eaft t\u01b0\u01a1ng \u0111\u1ed1i cao.
Trong \u0111i\u1ec1u ki\u1ec7n m\u00e0i m\u00f2n l\u00e2u d\u00e0i, c\u00e1c h\u1ea1t s\u1eaft v\u1ebft v\u1eabn s\u1ebd \u0111\u01b0\u1ee3c gi\u1ea3i ph\u00f3ng. Ngo\u00e0i ra, th\u00e9p kh\u00f4ng g\u1ec9 c\u0169ng c\u00f3 th\u1ec3 ch\u1ee9a crom, niken v\u00e0 mangan. Nh\u1eefng nguy\u00ean t\u1ed1 n\u00e0y c\u0169ng c\u00f3 th\u1ec3 l\u00e0 ngu\u1ed3n g\u00e2y t\u1ea1p ch\u1ea5t. Do \u0111\u00f3, \u0111\u1ed1i v\u1edbi s\u1ea3n xu\u1ea5t b\u1ed9t th\u1ea1ch anh th\u00f4ng th\u01b0\u1eddng, thi\u1ebft b\u1ecb b\u1eb1ng th\u00e9p kh\u00f4ng g\u1ec9 l\u00e0 \u0111\u1ee7. Tuy nhi\u00ean, \u0111\u1ed1i v\u1edbi s\u1ea3n xu\u1ea5t th\u1ea1ch anh c\u00f3 \u0111\u1ed9 tinh khi\u1ebft cao, thi\u1ebft b\u1ecb ph\u1ee7 g\u1ed1m v\u1eabn l\u00e0 l\u1ef1a ch\u1ecdn \u01b0u vi\u1ec7t h\u01a1n.<\/p>\n\n\n\n

C\u00e2u h\u1ecfi 2: C\u00f3 ph\u1ea3i ho\u00e0n to\u00e0n kh\u00f4ng c\u00f3 s\u1ef1 nhi\u1ec5m b\u1ea9n s\u1eaft trong c\u00e1c m\u00e1y nghi\u1ec1n kh\u00ed n\u00e9n?<\/h3>\n\n\n\n
\"L\u1edbp
L\u1edbp l\u00f3t g\u1ed1m<\/figcaption><\/figure>\n\n\n\n

C\u00e2u tr\u1ea3 l\u1eddi l\u00e0 t\u00ecnh tr\u1ea1ng \u00f4 nhi\u1ec5m g\u1ea7n nh\u01b0 kh\u00f4ng t\u1ed3n t\u1ea1i, nh\u01b0ng kh\u00f4ng ph\u1ea3i l\u00e0 ho\u00e0n to\u00e0n b\u1eb1ng kh\u00f4ng.
M\u1eb7c d\u00f9 m\u00e1y nghi\u1ec1n kh\u00ed n\u00e9n kh\u00f4ng g\u1eb7p v\u1ea5n \u0111\u1ec1 m\u00e0i m\u00f2n bi th\u00e9p, nh\u01b0ng v\u1eabn t\u1ed3n t\u1ea1i nh\u1eefng ngu\u1ed3n g\u00e2y \u00f4 nhi\u1ec5m ti\u1ec1m t\u00e0ng sau \u0111\u00e2y b\u00ean trong thi\u1ebft b\u1ecb:<\/p>\n\n\n\n