{"id":8561,"date":"2009-03-24T02:12:16","date_gmt":"2009-03-23T19:12:16","guid":{"rendered":"http:\/\/vafs.gov.vn\/vn\/2009\/03\/xay-dung-mo-hinh-day-chuyen-thiet-bi-va-cong-nghe-san-xuat-van-dam-bach-dan-phe-lieu-qui-mo-nho\/"},"modified":"2019-09-25T10:27:42","modified_gmt":"2019-09-25T03:27:42","slug":"xay-dung-mo-hinh-day-chuyen-thiet-bi-va-cong-nghe-san-xuat-van-dam-bach-dan-phe-lieu-qui-mo-nho","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/vn\/xay-dung-mo-hinh-day-chuyen-thiet-bi-va-cong-nghe-san-xuat-van-dam-bach-dan-phe-lieu-qui-mo-nho\/","title":{"rendered":"X\u00e2y d\u1ef1ng m\u00f4 h\u00ecnh d\u00e2y chuy\u1ec1n thi\u1ebft b\u1ecb v\u00e0 c\u00f4ng ngh\u1ec7 s\u1ea3n xu\u1ea5t V\u00e1n d\u0103m B\u1ea1ch \u0111\u00e0n ph\u1ebf li\u1ec7u qui m\u00f4 nh\u1ecf"},"content":{"rendered":"

Tr\u1ea7n Tu\u1ea5n Ngh\u0129a<\/p>\n

Trung t\u00e2m Th\u1ef1c nghi\u1ec7m & Chuy\u1ec3n giao k\u1ef9 thu\u1eadt CNR<\/p>\n

Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam<\/p>\n

T\u1ea1i c\u00e1c t\u1ec9nh ph\u00eda B\u1eafc Vi\u1ec7t Nam, \u0111\u00e3 h\u00ecnh th\u00e0nh 2 v\u00f9ng r\u1eebng tr\u1ed3ng cho 2 m\u1ee5c \u0111\u00edch s\u1eed d\u1ee5ng:<\/p>\n

V\u00f9ng r\u1eebng tr\u1ed3ng cung c\u1ea5p g\u1ed7 l\u00e0m tr\u1ee5 m\u1ecf (ch\u1ee7 y\u1ebfu l\u00e0 B\u1ea1ch \u0111\u00e0n) cho c\u00f4ng nghi\u1ec7p khai th\u00e1c than, n\u1eb1m tr\u00ean \u0111\u1ecba b\u00e0n c\u00e1c t\u1ec9nh v\u00f9ng \u0110\u00f4ng B\u1eafc nh\u01b0 Th\u00e1i Nguy\u00ean, B\u1eafc Giang, L\u1ea1ng S\u01a1n v\u00e0 Qu\u1ea3ng Ninh.<\/p>\n

V\u00f9ng r\u1eebng tr\u1ed3ng (b\u1ea1ch \u0111\u00e0n, keo l\u00e1 tr\u00e0m, keo tai t\u01b0\u1ee3ng, m\u1ee1, b\u1ed3 \u0111\u1ec1 …) ch\u1ee7 y\u1ebfu cung c\u1ea5p g\u1ed7 b\u0103m d\u0103m s\u1ea3n xu\u1ea5t gi\u1ea5y, n\u1eb1m tr\u00ean \u0111\u1ecba b\u00e0n c\u00e1c t\u1ec9nh ph\u00eda B\u1eafc v\u00e0 T\u00e2y B\u1eafc nh\u01b0 Ph\u00fa Th\u1ecd, Y\u00ean B\u00e1i, Tuy\u00ean Quang, L\u00e0o Cai, Ho\u00e0 B\u00ecnh, S\u01a1n La. G\u1ed7 r\u1eebng tr\u1ed3ng (ch\u1ee7 y\u1ebfu l\u00e0 b\u1ea1ch \u0111\u00e0n, keo l\u00e1 tr\u00e0m, m\u1ee1) c\u00f2n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho c\u00e1c nhu c\u1ea7u x\u00e2y d\u1ef1ng. Ngo\u00e0i ra, g\u1ed7 r\u1eebng tr\u1ed3ng c\u0169ng \u0111\u01b0\u1ee3c cung c\u1ea5p cho m\u1ed9t v\u00e0i d\u00e2y chuy\u1ec1n b\u0103m d\u0103m c\u00f4ng ngh\u1ec7 xu\u1ea5t kh\u1ea9u.<\/p>\n

C\u00e1c d\u00e2y chuy\u1ec1n b\u0103m d\u0103m c\u00f4ng ngh\u1ec7 cung c\u1ea5p d\u0103m cho c\u00e1c c\u01a1 s\u1edf s\u1ea3n xu\u1ea5t gi\u1ea5y v\u00e0 \u0111\u1eb7c bi\u1ec7t l\u00e0 b\u0103m d\u0103m c\u00f4ng ngh\u1ec7 xu\u1ea5t kh\u1ea9u, ph\u1ea3i qua c\u00f4ng \u0111o\u1ea1n s\u00e0ng \u0111\u1ec3 lo\u1ea1i b\u1ecf ph\u1ea7n d\u0103m v\u1ee5n. L\u01b0\u1ee3ng d\u0103m v\u1ee5n ph\u1ebf th\u1ea3i n\u00e0y (chi\u1ebfm t\u1eeb 3 – 5%) ngo\u00e0i vi\u1ec7c cho nh\u00e2n d\u00e2n xung quanh l\u1ea5y v\u1ec1 l\u00e0m ch\u1ea5t \u0111\u1ed1t, th\u00ec c\u00f2n ph\u1ea3i chi ph\u00ed \u0111\u1ec3 chuy\u1ec3n ch\u00fang kh\u1ecfi khu v\u1ef1c s\u1ea3n xu\u1ea5t.<\/p>\n

T\u1eeb th\u1ef1c t\u1ebf \u0111\u00f3, ch\u00fang t\u00f4i \u0111\u1ec1 xu\u1ea5t vi\u1ec7c nghi\u00ean c\u1ee9u x\u00e2y d\u1ef1ng m\u00f4 h\u00ecnh d\u00e2y chuy\u1ec1n c\u00f4ng ngh\u1ec7 v\u00e0 thi\u1ebft b\u1ecb s\u1ea3n xu\u1ea5t v\u00e1n d\u0103m b\u1ea1ch \u0111\u00e0n, t\u1eadn d\u1ee5ng d\u0103m ph\u1ebf li\u1ec7u t\u1eeb c\u00e1c d\u00e2y chuy\u1ec1n b\u0103m d\u0103m c\u00f4ng ngh\u1ec7, \u0111\u1ec3 gia c\u00f4ng c\u00e1c chi ti\u1ebft \u0111\u1ed3 m\u1ed9c<\/p>\n

I. N\u1ed9i dung v\u00e0 ph\u01b0\u01a1ng ph\u00e1p<\/p>\n

1.1 Ph\u00e2n lo\u1ea1i d\u0103m<\/p>\n

– Lo\u1ea1i b\u1ecf d\u0103m phi ti\u00eau chu\u1ea9n: D\u00f9ng s\u00e0ng, m\u1eaft s\u00e0ng k\u00edch th\u01b0\u1edbc 12×12 mm \u0111\u1ec3 lo\u1ea1i b\u1ecf d\u0103m c\u00f3 k\u00edch th\u01b0\u1edbc qu\u00e1 l\u1edbn d\u1ea1ng c\u1ee5c; v\u00e0 m\u1eaft s\u00e0ng c\u00f3 k\u00edch th\u01b0\u1edbc 2×2 mm \u0111\u1ec3 lo\u1ea1i b\u1ecf s\u1ed1 d\u0103m c\u00f3 k\u00edch th\u01b0\u1edbc qu\u00e1 nh\u1ecf (d\u1ea1ng b\u1ed9t).<\/p>\n

– L\u1ef1a ch\u1ecdn d\u0103m cho l\u1edbp ru\u1ed9t: D\u00f9ng s\u00e0ng, m\u1eaft s\u00e0ng k\u00edch th\u01b0\u1edbc 5×5 mm \u0111\u1ec3 ch\u1ecdn d\u0103m cho l\u1edbp ru\u1ed9t.<\/p>\n

– L\u1ef1a ch\u1ecdn d\u0103m cho l\u1edbp m\u1eb7t: D\u00f9ng s\u00e0ng, m\u1eaft s\u00e0ng k\u00edch th\u01b0\u1edbc 2×2 mm \u0111\u1ec3 ch\u1ecdn d\u0103m cho l\u1edbp m\u1eb7t (lo\u1ea1i b\u1ecf d\u0103m d\u1ea1ng b\u1ed9t).<\/p>\n

S\u1ed1 li\u1ec7u theo d\u00f5i trong c\u00f4ng \u0111o\u1ea1n n\u00e0y cho th\u1ea5y l\u01b0\u1ee3ng d\u0103m phi ti\u00eau chu\u1ea9n kho\u1ea3ng 10% (trong \u0111\u00f3 d\u0103m c\u00f3 k\u00edch th\u01b0\u1edbc qu\u00e1 l\u1edbn chi\u1ebfm g\u1ea7n 10%); d\u0103m l\u1edbp ru\u1ed9t chi\u1ebfm 60%; d\u0103m l\u1edbp m\u1eb7t 30%.<\/p>\n

1.2 S\u1ea5y d\u0103m<\/p>\n

– X\u00e1c \u0111\u1ecbnh \u0111\u1ed9 \u1ea9m ban \u0111\u1ea7u c\u1ee7a d\u0103m<\/p>\n

V\u00ec kh\u00f4ng c\u00f3 thi\u1ebft b\u1ecb x\u00e1c \u0111\u1ecbnh tr\u1ef1c ti\u1ebfp \u0111\u1ed9 \u1ea9m c\u1ee7a d\u0103m, n\u00ean ch\u00fang t\u00f4i \u0111\u00e3 s\u1eed d\u1ee5ng t\u1ee7 s\u1ea5y (\u1edf 100oC) v\u00e0 d\u00f9ng ph\u01b0\u01a1ng ph\u00e1p c\u00e2n \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh \u0111\u1ed9 \u1ea9m ban \u0111\u1ea7u c\u1ee7a d\u0103m, theo c\u00f4ng th\u1ee9c :<\/p>\n

m\u0111 – mo<\/p>\n

W\u0111 = x 100 (%) (2.1)<\/p>\n

mo<\/p>\n

Trong \u0111\u00f3: m\u0111 l\u00e0 tr\u1ecdng l\u01b0\u1ee3ng ban \u0111\u1ea7u c\u1ee7a d\u0103m \u1ea9m (g)<\/p>\n

mo l\u00e0 tr\u1ecdng l\u01b0\u1ee3ng cu\u1ed1i c\u1ee7a d\u0103m kh\u00f4 tuy\u1ec7t \u0111\u1ed1i (g)<\/p>\n

\u0110\u1ed9 \u1ea9m ban \u0111\u1ea7u c\u1ee7a d\u0103m b\u1ea1ch \u0111\u00e0n ph\u1ebf li\u1ec7u \u0111\u01b0\u1ee3c \u0111\u01b0a t\u1eeb d\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t d\u0103m b\u1ea1ch \u0111\u00e0n c\u00f4ng ngh\u1ec7 t\u1eeb th\u1ecb x\u00e3 S\u01a1n T\u00e2y v\u1ec1 x\u01b0\u1edfng th\u1ef1c nghi\u1ec7m c\u1ee7a Trung t\u00e2m CNR (H\u00e0 N\u1ed9i) v\u00e0o th\u00e1ng 6-7\/ 2000, trung b\u00ecnh t\u1eeb 45-60%.<\/p>\n

V\u00ec kh\u00f4ng c\u00f3 thi\u1ebft b\u1ecb s\u1ea5y chuy\u00ean, ch\u00fang t\u00f4i \u0111\u00e3 s\u1eed d\u1ee5ng l\u00f2 s\u1ea5y g\u1ed7 x\u1ebb, cho d\u0103m v\u00e0o t\u1eebng khay \u0111\u1ec3 s\u1ea5y (\u1edf nhi\u1ec7t \u0111\u1ed9 Tmax = 75oC). \u0110\u1ec3 gi\u1ea3m th\u1eddi gian s\u1ea5y d\u0103m \u0111\u01b0\u1ee3c ph\u01a1i t\u1eeb 2-3 ng\u00e0y (m\u1ed7i ng\u00e0y 6-8 gi\u1edd) \u0111\u1ec3 d\u0103m \u0111\u1ea1t t\u1edbi \u0111\u1ed9 kh\u00f4 gi\u00f3 (kho\u1ea3ng 15-18%). Th\u1eddi gian s\u1ea5y trong l\u00f2 l\u00e0 48h \u0111\u1ec3 d\u0103m \u0111\u1ea1t t\u1edbi \u0111\u1ed9 \u1ea9m cu\u1ed1i Wc = 5-8%.<\/p>\n

1.3 X\u00e1c \u0111\u1ecbnh c\u1ea5u tr\u00fac v\u00e1n d\u0103m<\/p>\n

Tr\u00ean c\u01a1 s\u1edf c\u00e1c s\u1ed1 li\u1ec7u v\u1ec1 ph\u00e2n lo\u1ea1i d\u0103m (kh\u1ed1i l\u01b0\u1ee3ng d\u0103m l\u1edbp ru\u1ed9t g\u1ea5p \u0111\u00f4i kh\u1ed1i l\u01b0\u1ee3ng d\u0103m l\u1edbp m\u1eb7t), ch\u00fang t\u00f4i \u0111\u00e3 ch\u1ecdn s\u1ea3n xu\u1ea5t th\u1eed nghi\u1ec7m v\u00e1n d\u0103m 3 l\u1edbp v\u1edbi c\u1ea5u tr\u00fac: 1 – 4 – 1 (v\u1ecf-ru\u1ed9t-v\u1ecf).<\/p>\n

1.4 X\u00e1c \u0111\u1ecbnh \u0111\u1ecbnh m\u1ee9c ch\u1ea5t k\u1ebft d\u00ednh<\/p>\n

V\u00ec d\u0103m c\u00f3 k\u00edch th\u01b0\u1edbc d\u1ea1ng m\u1ea3nh, n\u00ean \u0111\u1ecbnh m\u1ee9c ch\u1ea5t k\u1ebft d\u00ednh \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh l\u00e0 10%. Kh\u1ed1i l\u01b0\u1ee3ng th\u1ec3 t\u00edch v\u00e1n d\u0103m \u0111\u01b0\u1ee3c l\u1ef1a ch\u1ecdn l\u00e0 650 kg\/m3 n\u00ean kh\u1ed1i l\u01b0\u1ee3ng ch\u1ea5t k\u1ebft d\u00ednh c\u1ea7n thi\u1ebft \u0111\u1ec3 s\u1ea3n xu\u1ea5t \u0111\u01b0\u1ee3c 1 m3 v\u00e1n d\u0103m l\u00e0 60 kg.<\/p>\n

\u0110\u1ecbnh m\u1ee9c ch\u1ea5t k\u1ebft d\u00ednh cho l\u1edbp ru\u1ed9t \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh l\u00e0 10% v\u00e0 tr\u00ean c\u01a1 s\u1edf c\u1ea5u tr\u00fac c\u1ee7a v\u00e1n d\u0103m (1 – 4 – 1), x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c m\u1ee9c keo cho l\u1edbp m\u1eb7t l\u00e0 20%.<\/p>\n

Nh\u01b0 v\u1eady, ch\u00fang ta s\u1ebd t\u1ea1o \u0111\u01b0\u1ee3c lo\u1ea1i v\u00e1n d\u0103m (l\u1edbp m\u1eb7t 20%, l\u1edbp ru\u1ed9t 10% keo) c\u00f3 s\u1ef1 ph\u00e2n b\u1ed5 \u0111\u1ecbnh m\u1ee9c keo kh\u00e1c v\u1edbi th\u00f4ng l\u1ec7 (l\u1edbp m\u1eb7t 12%, l\u1edbp ru\u1ed9t 8%). Vi\u1ec7c s\u1eed d\u1ee5ng d\u0103m d\u1ea1ng m\u1ea3nh \u0111\u1ec3 s\u1ea3n xu\u1ea5t v\u00e1n d\u0103m ngo\u00e0i vi\u1ec7c “t\u1ed1n” keo th\u00ec c\u01b0\u1eddng \u0111\u1ed9 u\u1ed1n t\u0129nh c\u0169ng r\u1ea5t th\u1ea5p n\u00ean vi\u1ec7c t\u0103ng \u0111\u1ecbnh m\u1ee9c keo \u1edf l\u1edbp m\u1eb7t s\u1ebd l\u00e0m t\u0103ng c\u01b0\u1eddng \u0111\u1ed9 u\u1ed1n t\u0129nh cho v\u00e1n, \u0111\u1ed3ng th\u1eddi c\u0169ng l\u00e0m ch\u1ea5t l\u01b0\u1ee3ng b\u1ec1 m\u1eb7t t\u1ed1t h\u01a1n, t\u1ea1o \u0111i\u1ec1u ki\u1ec7n thu\u1eadn ti\u1ec7n cho c\u00f4ng \u0111o\u1ea1n gia c\u00f4ng b\u1ec1 m\u1eb7t v\u00e0 d\u00e1n, ph\u1ee7 s\u1ea3n ph\u1ea9m \u0111\u1ed3 m\u1ed9c sau n\u00e0y.<\/p>\n

1.5 Ch\u1ea5t k\u1ebft d\u00ednh<\/p>\n

Ch\u00fang t\u00f4i ch\u1ecdn s\u1eed d\u1ee5ng keo c\u1ee7a h\u00e3ng DYNO, m\u00e1c WG 2111 l\u00e0 keo UF d\u1ea1ng l\u1ecfng, v\u1edbi ch\u1ea5t \u0111\u00f3ng r\u1eafn l\u00e0 mu\u1ed1i clorua amol v\u1edbi \u0111\u1ecbnh m\u1ee9c 0,8%<\/p>\n

M\u1ed9t s\u1ed1 \u0111\u1eb7c t\u00ednh k\u1ef9 thu\u1eadt c\u1ee7a keo WG 2111<\/p>\n

– N\u1ed3ng \u0111\u1ed9 : 45-48%<\/p>\n

– \u0110\u1ed9 nh\u1edbt (VS-4) : 50-100 s<\/p>\n

– pH : 7,5-8,5<\/p>\n

– Nhi\u1ec7t \u0111\u1ed9 \u0111\u00f3ng r\u1eafn : 100-120oC<\/p>\n

– Th\u1eddi gian \u0111\u00f3ng r\u1eafn: 25 gi\u00e2y<\/p>\n

– Th\u1eddi gian s\u1ed1ng : \u00a390 ng\u00e0y<\/p>\n

1.6 Tr\u1ed9n keo<\/p>\n

Tr\u00ean c\u01a1 s\u1edf k\u1ebft c\u1ea5u c\u1ee7a v\u00e1n (1-4-1), \u0111\u1ecbnh m\u1ee9c keo v\u00e0 kh\u1ed1i l\u01b0\u1ee3ng th\u1ec3 t\u00edch \u0111\u00e3 l\u1ef1a ch\u1ecdn ch\u00fang t\u00f4i ti\u1ebfn h\u00e0nh t\u00ednh to\u00e1n v\u00e0 chu\u1ea9n b\u1ecb tr\u1ecdng l\u01b0\u1ee3ng d\u0103m (l\u1edbp ru\u1ed9t v\u00e0 l\u1edbp m\u1eb7t), tr\u1ecdng l\u01b0\u1ee3ng keo (l\u1edbp ru\u1ed9t v\u00e0 l\u1edbp m\u1eb7t) cho m\u1ed9t t\u1ea5m v\u00e1n d\u0103m.<\/p>\n

Vi\u1ec7c tr\u1ed9n keo \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n tr\u00ean m\u1ed9t thi\u1ebft b\u1ecb b\u00e1n c\u01a1 gi\u1edbi g\u1ed3m th\u00f9ng tr\u1ed9n keo (c\u00f3 h\u1ec7 th\u1ed1ng c\u00e1nh \u0111\u1ea3o d\u0103m), s\u00fang phun keo (g\u1eafn v\u1edbi m\u00e1y n\u00e9n kh\u00ed). Ti\u1ebfn h\u00e0nh phun keo ri\u00eang bi\u1ec7t \u0111\u1ed1i v\u1edbi 2 l\u1edbp m\u1eb7t v\u00e0 ru\u1ed9t.<\/p>\n

1.7 Tr\u1ea3i th\u1ea3m<\/p>\n

Vi\u1ec7c tr\u1ea3i th\u1ea3m \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh gi\u00e1n \u0111o\u1ea1n t\u1eebng t\u1ea5m v\u00e1n m\u1ed9t v\u00e0o m\u1ed9t chi\u1ebfc khu\u00f4n g\u1ed7 k\u00edch th\u01b0\u1edbc 1300x1300x100 mm.<\/p>\n

D\u0103m l\u1edbp m\u1eb7t \u0111\u01b0\u1ee3c chia l\u00e0m 2 ph\u1ea7n b\u1eb1ng nhau. \u0110\u1ea7u ti\u00ean tr\u1ea3i l\u1edbp d\u0103m m\u1eb7t th\u1ee9 nh\u1ea5t, ti\u1ebfp theo l\u00e0 tr\u1ea3i to\u00e0n b\u1ed9 l\u1edbp d\u0103m ru\u1ed9t, v\u00e0 cu\u1ed1i c\u00f9ng l\u00e0 tr\u1ea3i l\u1edbp d\u0103m m\u1eb7t th\u1ee9 hai l\u00ean tr\u00ean c\u00f9ng. V\u00ec kh\u00f4ng c\u00f3 kinh ph\u00ed ch\u1ebf t\u1ea1o thi\u1ebft b\u1ecb tr\u1ea3i th\u1ea3m n\u00ean c\u00f4ng \u0111o\u1ea1n n\u00e0y \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p th\u1ee7 c\u00f4ng.<\/p>\n

1 8. \u00e9p V\u00e1n d\u0103m<\/p>\n

– Nhi\u1ec7t \u0111\u1ed9 \u00e9p: Nhi\u1ec7t \u0111\u1ed9 \u0111\u00f3ng r\u1eafn c\u1ee7a keo WG 2111 l\u00e0 100-120oC, n\u00ean nhi\u1ec7t \u0111\u1ed9 \u00e9p \u0111\u01b0\u1ee3c ch\u1ecdn l\u00e0: 110-130oC<\/p>\n

– \u00e1p l\u1ef1c \u00e9p: 15-18 kg\/cm2<\/p>\n

– \u00e1p su\u1ea5t d\u1ea7u \u00e9p \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh theo c\u00f4ng th\u1ee9c:<\/p>\n

Pd.\u00e5Sp<\/p>\n

Pe =<\/p>\n

Sb<\/p>\n

Trong \u0111\u00f3:<\/p>\n

Pd: \u00e1psu\u1ea5t d\u1ea7u (kg\/cm2)<\/p>\n

Sp: Di\u1ec7n t\u00edch c\u1ee7a m\u1ed9t Pist\u00f4ng<\/p>\n

Sb: Di\u1ec7n t\u00edch m\u1eb7t b\u00e0n \u00e9p<\/p>\n

T\u1eeb c\u00f4ng th\u1ee9c ( 2.2), ta t\u00ednh \u0111\u01b0\u1ee3c \u00e1p su\u1ea5t d\u1ea7u<\/p>\n

Pe .Sb<\/p>\n

Pd = (2.3)<\/p>\n

\u00e5sp<\/p>\n

– Th\u1eddi gian \u00e9p<\/p>\n

Th\u1eddi gian \u00e9p g\u1ed3m: T = Tnl + Tna + Ta + Tha + Ttl = 900 s<\/p>\n

Trong \u0111\u00f3: Tnl = 60 s: th\u1eddi gian n\u1ea1p li\u1ec7u<\/p>\n

Tna = 60 s: th\u1eddi gian n\u00e2ng \u00e1p l\u1ef1c<\/p>\n

Ta = 600 s: th\u1eddi gian gi\u1eef \u00e1p l\u1ef1c<\/p>\n

Tha = 120 s: th\u1eddi gian h\u1ea1 \u00e1p l\u1ef1c<\/p>\n

Ttl = 60 s: th\u1eddi gian th\u00e1o li\u1ec7u<\/p>\n

S\u01a1 \u0111\u1ed3 qui tr\u00ecnh \u00e9p (bi\u1ec3u \u0111\u1ed3 \u00e9p)<\/p>\n

P (kg\/cm2)<\/p>\n

15<\/p>\n

t(s)<\/p>\n

60s 60s 600s 120s 60s<\/p>\n

1.9 X\u00e9n c\u1ea1nh<\/p>\n

V\u00e1n d\u0103m sau khi \u00e9p \u0111\u01b0\u1ee3c x\u1ebfp th\u00e0nh \u0111\u1ed1ng, sau 24 h c\u00f3 th\u1ec3 \u0111\u01b0a ra x\u00e9n c\u1ea1nh b\u1eb1ng c\u01b0a \u0111\u0129a d\u1ea1ng b\u00e0n tr\u01b0\u1ee3t 1 l\u01b0\u1ee1i c\u01b0a hay 2 l\u01b0\u1ee1i c\u01b0a.<\/p>\n

II. K\u1ebft qu\u1ea3<\/p>\n

V\u00e1n d\u0103m b\u1ea1ch \u0111\u00e0n ph\u1ebf li\u1ec7u (k\u00edch th\u01b0\u1edbc 1220x2440x16mm) sau khi s\u1ea3n xu\u1ea5t th\u1eed \u0111\u00e3 \u0111\u01b0\u1ee3c th\u1eed nghi\u1ec7m m\u1ed9t s\u1ed1 t\u00ednh ch\u1ea5t c\u01a1 l\u00fd, t\u00ednh to\u00e1n c\u00e1c chi ph\u00ed \u0111\u1ec3 s\u1ea3n xu\u1ea5t 1m3 v\u00e1n v\u00e0 c\u00e1c thi\u1ebft b\u1ecb trong d\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t quy m\u00f4 1m3\/ ca c\u0169ng \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh. C\u1ee5 th\u1ec3:<\/p>\n

2.1 K\u1ebft qu\u1ea3 th\u1eed nghi\u1ec7m c\u00e1c t\u00ednh ch\u1ea5t c\u01a1 l\u00fd c\u1ee7a v\u00e1n d\u0103m<\/p>\n

B\u1ea3ng 2.1 M\u1ed9t s\u1ed1 t\u00ednh ch\u1ea5t c\u01a1 l\u00fd c\u1ee7a v\u00e1n d\u0103m b\u1ea1ch \u0111\u00e0n ph\u1ebf li\u1ec7u<\/p>\n\n\n\n\n\n\n\n\n\n\n\n
T.T<\/td>\nC\u00e1c ch\u1ec9 s\u1ed1<\/td>\n\u0110\u01a1n v\u1ecb<\/td>\nC\u00e1c gi\u00e1 tr\u1ecb<\/td>\n<\/tr>\n
Min<\/td>\nMax<\/td>\nTrung b\u00ecnh<\/td>\n<\/tr>\n
1<\/td>\nKh\u1ed1i l\u01b0\u1ee3ng th\u1ec3 t\u00edch<\/td>\ng\/cm3<\/td>\n0,59<\/td>\n0,65<\/td>\n0,62<\/td>\n<\/tr>\n
2<\/td>\n\u0110\u1ed9 \u1ea9m<\/td>\n%<\/td>\n9,2<\/td>\n10,8<\/td>\n10<\/td>\n<\/tr>\n
3<\/td>\n\u0110\u1ed9 b\u1ec1n u\u1ed1n t\u0129nh<\/td>\nkgf\/cm2<\/td>\n53<\/td>\n72<\/td>\n64<\/td>\n<\/tr>\n
4<\/td>\n\u0110\u1ed9 tr\u01b0\u01a1ng n\u1edf chi\u1ec1u d\u00e0y<\/p>\n

( sau khi ng\u00e2m n\u01b0\u1edbc 2 h)<\/td>\n

%<\/td>\n4,3<\/td>\n6,3<\/td>\n4,8<\/td>\n<\/tr>\n
5<\/td>\nM\u00f4 \u0111un \u0111\u00e0n h\u1ed3i<\/td>\nkgf\/cm2<\/td>\n6734<\/td>\n10726<\/td>\n9193<\/td>\n<\/tr>\n
6<\/td>\n\u0110\u1ed9 b\u1ec1n m\u00e0ng keo<\/p>\n

(k\u00e9o vu\u00f4ng g\u00f3c)<\/td>\n

kgf\/cm2<\/td>\n4,83<\/td>\n5,50<\/td>\n5,18<\/td>\n<\/tr>\n
7<\/td>\n\u0110\u1ed9 b\u00e1m \u0111inh m\u1eb7t v\u00e1n<\/td>\nN<\/td>\n1190<\/td>\n1340<\/td>\n1278<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

C\u00e1c s\u1ed1 li\u1ec7u ch\u00fang ta th\u1ea5y:<\/p>\n

– Kh\u1ed1i l\u01b0\u1ee3ng th\u1ec3 t\u00edch trung b\u00ecnh c\u1ee7a v\u00e1n d\u0103m l\u00e0 620 kg\/m3, \u0111\u1ea1t ti\u00eau chu\u1ea9n \u0111\u1ec3 s\u1ea3n xu\u1ea5t \u0111\u1ed3 m\u1ed9c (580-680 kg\/m3). Nguy\u00ean nh\u00e2n s\u1ef1 bi\u1ebfn \u0111\u1ed9ng kh\u1ed1i l\u01b0\u1ee3ng th\u1ec3 t\u00edch l\u1edbn (gmin = 590 kg\/m3 , gmax= 650 kg\/ m3) l\u00e0 do c\u00f4ng \u0111o\u1ea1n tr\u1ea3i th\u1ea3m th\u1ef1c hi\u1ec7n th\u1ee7 c\u00f4ng.<\/p>\n

– C\u00e1c ch\u1ec9 s\u1ed1: \u0110\u1ed9 b\u1ec1n u\u1ed1n t\u0129nh, modun \u0111\u00e0n h\u1ed3i, \u0111\u1ed9 b\u1ec1n m\u00e0ng keo, \u0111\u1ed9 b\u00e1m \u0111inh t\u01b0\u01a1ng \u0111\u1ed1i th\u1ea5p v\u00ec ch\u00fang ta t\u1eadn d\u1ee5ng d\u0103m ph\u1ebf li\u1ec7u.<\/p>\n

– C\u00e1c t\u00ednh ch\u1ea5t kh\u00e1c (\u0111\u1ed9 \u1ea9m v\u00e1n, \u0111\u1ed9 tr\u01b0\u01a1ng n\u1edf khi ng\u00e2m n\u01b0\u1edbc), \u0111\u1ea1t \u0111\u01b0\u1ee3c gi\u00e1 tr\u1ecb theo ti\u00eau chu\u1ea9n (GB\/T 14974 – 10 – 93 c\u1ee7a TQ).<\/p>\n

V\u1edbi c\u00e1c ch\u1ec9 s\u1ed1 tr\u00ean v\u00e1n d\u0103m b\u1ea1ch \u0111\u00e0n ph\u1ebf li\u1ec7u c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng l\u00e0m c\u00e1c chi ti\u1ebft nh\u1ecf c\u1ee7a \u0111\u1ed3 m\u1ed9c gia d\u1ee5ng (k\u1ebft h\u1ee3p v\u1edbi c\u00e1c v\u00e1n d\u0103m ch\u00ednh ph\u1ea9m kh\u00e1c).<\/p>\n

2.2 M\u1ed9t s\u1ed1 ch\u1ec9 ti\u00eau kinh t\u1ebf s\u1ea3n xu\u1ea5t v\u00e1n d\u0103m B\u1ea1ch \u0111\u00e0n ph\u1ebf li\u1ec7u<\/p>\n

B\u1ea3ng 2.2 T\u1ed5ng h\u1ee3p chi ph\u00ed s\u1ea3n xu\u1ea5t 1 m3 v\u00e1n d\u0103m b\u1ea1ch \u0111\u00e0n ph\u1ebf li\u1ec7u<\/p>\n\n\n\n\n\n
No<\/td>\nDanh m\u1ee5c<\/td>\n\u0110\u01a1n v\u1ecb<\/td>\n\u0110\u01a1n gi\u00e1 (1000 \u0111)<\/td>\nS\u1ed1 l\u01b0\u1ee3ng<\/td>\nT.ti\u1ec1n (1000 \u0111)<\/td>\n<\/tr>\n
1<\/p>\n

2<\/p>\n

3<\/p>\n

4<\/p>\n

5<\/p>\n

6<\/td>\n

D\u0103m ph\u1ebf li\u1ec7u<\/p>\n

Keo<\/p>\n

N\u0103ng l\u01b0\u1ee3ng (\u0111i\u1ec7n)<\/p>\n

C\u00f4ng lao \u0111\u1ed9ng<\/p>\n

Kh\u1ea5u hao TB, XDCB<\/p>\n

Qu\u1ea3n l\u00fd 1%<\/td>\n

T\u1ea5n<\/p>\n

Kg<\/p>\n

Kw<\/p>\n

C<\/p>\n

–<\/p>\n

–<\/td>\n

150<\/p>\n

5<\/p>\n

1<\/p>\n

15<\/p>\n

–<\/p>\n

–<\/td>\n

1<\/p>\n

120<\/p>\n

200<\/p>\n

12<\/p>\n

–<\/p>\n

–<\/td>\n

150<\/p>\n

600<\/p>\n

200<\/p>\n

180<\/p>\n

100<\/p>\n

70<\/td>\n<\/tr>\n

T\u1ed5ng c\u1ed9ng<\/td>\n1300<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

2.3 D\u00e2y chuy\u1ec1n thi\u1ebft b\u1ecb SX v\u00e1n d\u0103m B\u1ea1ch \u0111\u00e0n ph\u1ebf li\u1ec7u c\u00f4ng su\u1ea5t 1 m3 \/ca<\/p>\n

B\u1ea3ng 2.3 D\u00e2y chuy\u1ec1n thi\u1ebft b\u1ecb<\/p>\n\n\n\n\n\n\n\n\n\n\n
No<\/td>\nT\u00ean thi\u1ebft b\u1ecb<\/td>\n\u0110\u1eb7c t\u00ednh k\u1ef9 thu\u1eadt<\/td>\nS\u1ed1 l\u01b0\u1ee3ng<\/td>\n<\/tr>\n
1<\/td>\nThi\u1ebft b\u1ecb s\u00e0ng d\u0103m<\/td>\nNguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng: s\u00e0ng l\u1eafc, v\u1edbi 3 lo\u1ea1i s\u00e0ng<\/td>\n1<\/td>\n<\/tr>\n
2<\/td>\nThi\u1ebft b\u1ecb s\u1ea5y d\u0103m<\/td>\nD\u1ea1ng tr\u1ed1ng quay, C. su\u1ea5t 200 kg d\u0103m\/m\u1ebb, th\u1eddi gian s\u1ea5y 2 gi\u1edd, nguy\u00ean t\u1eafc ho\u1ea1t \u0111\u1ed9ng: gi\u00e1n \u0111o\u1ea1n<\/td>\n1<\/td>\n<\/tr>\n
3<\/td>\nThi\u1ebft b\u1ecb tr\u1ed9n keo<\/td>\nD\u1ea1ng th\u00f9ng tr\u1ed9n c\u00f3 c\u00e1nh \u0111\u1ea3o, c\u00f4ng su\u1ea5t 20 kg d\u0103m\/m\u1ebb; nguy\u00ean t\u1eafc ho\u1ea1t \u0111\u1ed9ng: b\u00e1n c\u01a1 gi\u1edbi<\/td>\n3<\/td>\n<\/tr>\n
4<\/td>\nThi\u1ebft b\u1ecb tr\u1ea3i th\u1ea3m<\/td>\nNguy\u00ean l\u00fd ch\u1ebf t\u1ea1o d\u1ea1ng d\u00f2ng kh\u00ed n\u00e9n; nguy\u00ean t\u1eafc ho\u1ea1t \u0111\u1ed9ng: gi\u00e1n \u0111o\u1ea1n; c\u00f4ng su\u1ea5t: 1,5 t\u1ea5n\/ca<\/td>\n1<\/td>\n<\/tr>\n
5<\/td>\nM\u00e1y \u00e9p<\/td>\n3 t\u1ea7ng \u00e9p, d\u00f9ng n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n, k\u00edch th\u01b0\u1edbc b\u00e0n \u00e9p 1300×1300 mm<\/td>\n1<\/td>\n<\/tr>\n
6<\/td>\nThi\u1ebft b\u1ecb x\u00e9n c\u1ea1nh<\/td>\nD\u1ea1ng c\u01b0a \u0111\u0129a b\u00e0n tr\u01b0\u1ee3t, 2 l\u01b0\u1ee1i x\u00e9n<\/td>\n1<\/td>\n<\/tr>\n
7<\/td>\nThi\u1ebft b\u1ecb \u0111\u00e1nh nh\u1eb5n<\/td>\nD\u1ea1ng \u0111\u00e1nh nh\u00e1m b\u0103ng<\/td>\n1<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Vi\u1ec7c s\u1ea3n xu\u1ea5t th\u1eed nghi\u1ec7m v\u00e1n d\u0103m b\u1ea1ch \u0111\u00e0n, v\u00e0 vi\u1ec7c th\u1ef1c hi\u1ec7n c\u00e1c h\u1ee3p \u0111\u1ed3ng v\u1edbi c\u00e1c c\u01a1 s\u1edf s\u1ea3n xu\u1ea5t nh\u01b0 s\u1ea3n xu\u1ea5t v\u00e1n d\u0103m tre th\u1eed nghi\u1ec7m s\u1eed d\u1ee5ng ph\u1ebf li\u1ec7u t\u1eeb d\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t v\u00e1n s\u00e0n tre xu\u1ea5t kh\u1ea9u, h\u1ee3p \u0111\u1ed3ng h\u1ee3p t\u00e1c s\u1ea3n xu\u1ea5t v\u00e1n d\u0103m kh\u1ed5 nh\u1ecf, s\u1eed d\u1ee5ng ph\u1ebf li\u1ec7u t\u1eeb d\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t v\u00e1n d\u00e1n, h\u1ee3p \u0111\u1ed3ng c\u1ea3i t\u1ea1o 1 s\u1ed1 thi\u1ebft b\u1ecb trong d\u00e2y chuy\u1ec1n SX v\u00e1n d\u0103m t\u1eadn d\u1ee5ng ph\u1ebf li\u1ec7u t\u1eeb c\u00e1c c\u01a1 s\u1edf l\u00e0m \u0111\u1ed3 m\u1ed9c \u0111\u00e3 thu \u0111\u01b0\u1ee3c c\u00e1c s\u1ed1 li\u1ec7u c\u1ea7n thi\u1ebft, l\u00e0m c\u01a1 s\u1edf khoa h\u1ecdc v\u00e0 th\u1ef1c ti\u1ec5n \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh c\u00f4ng ngh\u1ec7 th\u00edch h\u1ee3p, v\u00e0 x\u00e2y d\u1ef1ng d\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t v\u00e1n d\u0103m quy m\u00f4 nh\u1ecf t\u1eeb g\u1ed7 r\u1eebng tr\u1ed3ng.<\/p>\n

T\u00e0i li\u1ec7u tham kh\u1ea3o<\/p>\n

1. G.M Shvarsman. C\u00f4ng ngh\u1ec7 s\u1ea3n xu\u1ea5t v\u00e1n d\u0103m. Matxc\u01a1va-1977<\/p>\n

2. V.M. Khruev,K.A. Mart\u01b0n\u00f4v. T\u0103ng c\u01b0\u1eddng \u0111\u1ed9 b\u1ec1n c\u1ee7a v\u00e1n d\u0103m. Matxc\u01a1va-1977<\/p>\n

3. Nguy\u1ec5n M\u1ea1nh Ho\u1ea1t. Thi\u1ebft k\u1ebf c\u1ea3i ti\u1ebfn m\u00e1y b\u0103m d\u0103m l\u01b0u \u0111\u1ed9ng. H\u00e0 N\u1ed9i- 1996<\/p>\n

4. Ho\u00e0ng Th\u00fac \u0110\u1ec7. Nghi\u00ean c\u1ee9u \u0111\u1ecbnh m\u1ee9c ti\u00eau hao nguy\u00ean li\u1ec7u (m3) \u0111\u1ec3 s\u1ea3n xu\u1ea5t 1 t\u1ea5n v\u00e1n d\u0103m l\u00e0m \u0111\u1ed3 m\u1ed9c. H\u00e0 N\u1ed9i 1997.<\/p>\n

5. Ch\u1ea5t l\u01b0\u1ee3ng v\u00e1n d\u0103m. Ti\u00eau chu\u1ea9n GB (TQ)<\/p>\n

Developing model of equipment line and technology in small-scale production of particle board with eucalypt wood residue as raw material.<\/p>\n

Summary: The research subjiect deals with the establishment on model of equipment lines and technology for producing Eucalyptus particle-board, using the waste from the chipping lines. The problems are as follows:<\/p>\n

– To difine the approprate technology for producing Eucalyptus particle-<\/p>\n

board with small dimenson to make family furniture.<\/p>\n

– To propose the projiect of design to improve the equipment lines for producing Eucalyptus particle-board with small scale.<\/p>\n

*******************************************<\/p>\n","protected":false},"excerpt":{"rendered":"

T\u1ea1i các t\u1ec9nh phía B\u1eafc Vi\u1ec7t Nam, \u0111ã hình thành 2 vùng r\u1eebng tr\u1ed3ng cho 2 m\u1ee5c \u0111ích s\u1eed d\u1ee5ng: Vùng r\u1eebng tr\u1ed3ng cung c\u1ea5p g\u1ed7 làm tr\u1ee5 m\u1ecf (ch\u1ee7 y\u1ebfu là B\u1ea1ch \u0111àn) cho công nghi\u1ec7p khai thác than, n\u1eb1m trên \u0111\u1ecba bàn các t\u1ec9nh vùng \u0110ông B\u1eafc nh\u01b0 Thái Nguyên, B\u1eafc Giang, L\u1ea1ng S\u01a1n và Qu\u1ea3ng Ninh. <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[18],"tags":[],"_links":{"self":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/8561"}],"collection":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/comments?post=8561"}],"version-history":[{"count":2,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/8561\/revisions"}],"predecessor-version":[{"id":19338,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/8561\/revisions\/19338"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/media?parent=8561"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/categories?post=8561"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/tags?post=8561"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}