HOI NGHI KHOA HOC KY THUAT MO TOAN QUOC LAN THUT XX CNM NGHIEN CUU TUYEN THAN DO TRO CAO THUOC MO HA TU VA NUI BEO TREN MAY LANG USiS\ CHUYEN DONG DAN CONG NGHIEP TS PHAM HiJrU GIANG, ThS N H Q T H ![.]
CNM HOI NGHI KHOA HOC KY THUAT MO TOAN QUOC LAN THUT XX NGHIEN CUU TUYEN THAN DO TRO CAO THUOC MO HA TU VA NUI BEO TREN MAY LANG USiS\ CHUYEN DONG DAN CONG NGHIEP TS PHAM HiJrU GIANG, ThS N H Q T H ! KIM DUNG ThS NINH TH! MAI, KS HOANG H O U DUONG Trudng Dai hgc Mo-Dja chit Bk eudi the k^ 20 dau the k:y' 21, tren t h i gidi xua't I hien loai may lang ludi ehuyin dpng cong de -I tuyen tiian cd dp tro eao (than ngheo) Loai may lang da dupc ap dung b cac nude nhu: CHLB OOc, Trung Qude, Nam Phi, Uc U'u diem cua loai may lang cho ehi phf dien, ehi phf nude va vdn dau tu tha'p hdn so vdi cac loai may lang ep (dang lap dat tai xodng tuyen than II CCfa Ong va xudng tuyen than Nam Cau Trang), vi vay chi phf cang tha'p hdn so vdi cac thiit bj tuyen treng huyen phu manhetit Hieu qua tuyen eCia loai thiit bj tuyen may lang ludi chuyen dpng cong dat kha cao tham ehf tuyen than cap hat ldn (cap hat 40+400 mm) cho sai sd cd gidi cdn tha'p hdn ea so vdi loai may lang khf ep hien dai hien nho may lang Batae Hien nay, b cac md than thupc khu vyc Quang Ninh ndi ehung va md than Ha Tu va Nui Beo ndi rieng dang tdn dpng mdt lopng Idn than cd dp tro eao (dp tro tren 45 %), ed mo lopng than tdn dpng den vai tram nghin tan Lopng than dp tro cao nam ngoai tieu chuan cha't lopng than cua Viet Nam nen rat khd tieu thu Oe xem xet kha nang Cfng dung loai may lang mdi vao thye te san xuat, nhdm nghien eCfu da tiin hanh thf nghiem hai loai than cha't lupng tha'p cua hai md Ha Tu va Nui Beo tren may lang ludi chuyen ddng cong ban edng nghiep Tmh chat mlu than nghien cyu 1.1 Thanh phin hat Mlu than ehat lupng tha'p dupc Cdng ty CP than Nui Bee va Cdng ty CP than Ha Tu lay mlu va eung cap Ket qua phan tfch ray khd hai mlu than cCia hai mo neu b Bang va Bang 1.2 Thanh phin ty trgng Theo ket qua phan tich ray va phan tfch dp tro hai mlu thf nghiem cho tha'y than can tuyin dd'i vdi mlu than Nui Beo ty 6+50 mm va mlu than Ha Tu 3+15 mm Kit qua phan tfch chim ndi cac ca'p hat thude than hai mau neu b Bang va Bang Nhan xet: JU kit qua phan tfch ray khd va phan ty trpng mau than cCia hai mo, ed mpt sd nhan xet sau: •:• Ham lupng cap 0+6 mm hai miu chiem tren 57 % • Op tro ca'p 0+6 mm thudc m l u than md Nui Beo tha'p (dudi 38 %) thupc loai cam 6a HG theo TCVN, nen khdng can tuyen cd the tieu thu dupe, dd m l u than md Ha Tu cd dp tro tren 47 % khdng nam tieu ehua'n TCVN •:• Than cap hat +15 mm thupc m l u than md Ha Tu ed dp tro cao tren 80 % cd the thai bd dope, dd dd'i vdi mau than md Nui Beo ed dp tro dudi 75 % VI vay cap hat v l n can phai tuyen de tan thu than sach Bang Ket qua phan tich ray khd miu than md Nui Beo Cap hat, mm +35 15+35 6+15 3+6 1+3 0,5+1 -0,5 Cpng Than dau Y% 3.72 17.74 16.05 14.69 18.33 9.12 20.35 100.00 A% 72.72 57.07 56.47 42.65 37.65 36.04 35.53 45,58 Luy tfch theo EY, % 3.72 21.46 37.51 52.20 70.53 79.65 100.00 dOdng A% 72.72 59.78 58.37 53.94 49.71 48.14 45.58 Luy tfch theo am A% Zy, % 100.00 45.57 44.53 96.28 41.69 78.54 37.90 62.49 36.44 47.80 35.69 29.47 35.53 20.35 CONG NGHIEP MO SO - 2009 HQI NGH! KHOA HOC KY THUAT MO TOAN QUOC LAN THIJTXX Bang Ke't qua phan tich ray khd miu than md Ha Tu Cap hat, mm +35 15+35 6+15 3+6 1+3 0,5+1 -0,5 Cdng Than dau IY, % 16.40 12.97 13.15 12.90 14.49 9.26 20.83 100.00 A, % 84.80 81.74 66.60 58.93 51.28 45.00 37.81 60.34 Luy tfch theo dUdno A, % Iy, % 16.40 84.80 29.37 83.45 42.52 78.24 55.42 73.74 69.91 69.09 79.17 66.27 100.00 60.34 Luy tfch theo am A, % IY, % 60.34 100.00 55.54 83.60 50.73 70.63 47.10 57.48 43.68 44.58 40.02 30.09 37.81 20.83 Bang Thanh phan t^ trgng than cac cap hat thudc md than Nui Beo Cap t^ trpng -1.4 1,4+1,5 1,5+1,6 1,6+1,7 1,7+1,8 1,8+1,9 1,9-2,0 >2,0 Cdng Ca'p hat 35+50 mm A, % IY, % 3.38 6.07 12.39 17.62 0.56 34.23 6.76 36.62 1.13 48.69 4.79 53 7.89 63.17 63.10 85.85 100 67.30 Cap hat 5+35 mm A, % Iy, % 16.91 6.76 5.81 20.64 5.39 30.18 4.23 40.84 5.18 48.55 4.55 57.33 3.49 63.09 54.44 85.09 100.00 59.34 Ca'p hat 6+15 mm A, % Iy, % 34.12 5.01 4.70 18.17 4.28 28.13 3.73 38.37 3.18 48.14 2.62 55.16 2.62 61.45 44.75 83.31 100.00 47.07 Bang Thanh phin t^ trgng than cac cap hat thudc md than Ha Tu Cap t^ trpng -1.4 1,4+1,5 1,5+1,6 1,6+1,7 1,7+1,8 1,8+1,9 1,9-2,0 >2,0 Cpng Cap hat 5+35 mm A, % Iy, % 3.26 2.24 8.32 1.57 24.44 1.41 35.57 0.99 42.42 1.66 53.69 1.9 61.38 86.97 87.54 100 79.78 Ca'p hat 6+15 mm A, % Iy, % 16.02 3.42 4.14 13.72 2.16 23.58 2.43 36.64 1.57 47.18 3.48 58.79 1.08 65.79 69.12 88.13 - 100 66.93 • Mau than md Nui Beo, lupng than (cap t^ trpng -0,15) chiim iO 15,77 % d i n 38,82 % Phan t^ trpng Idn hdn (cd dd tro Idn hdn 83 %) ed thu hoaeh tCf 63,1 din 44,75 % • Mlu than mo Ha Tu, lupng than (cap t^ -0,5) chiem ty 5,5 % d i n 27,64 % Phan t^ trpng Idn hPn (ed tro ldn hdn 87 %) ed thu hoach td 86,97 den 55,23 % • Odi vdi may lang ludi chuyen ddng cong rat thfch hpp vdi t^ trpng phan tuyen ty 1,7 d i n 2,0 nen tuyen tren may lang cho phep ed the lay dUdc da thai cd dd tro 80 % CONG NGHIEP MO SO - 2009 Cap hat 3+6 mm A, % IY, % 7.63 2.66 20.01 3.67 6.22 15.28 1.64 29.98 3.86 46.60 1.03 51.46 4.38 64.87 55.23 87.94 100 56.12 Ket qua thf nghiem tuyen m l u than Nui Beo 2.1 Phuang an tuyen than cip hat 6^35 mm •:• Khi thay ddi chieu eao ngudng tran Diiu kien thay ddi la chieu cao ngudng tran Ket qua thf nghiem neu d Bang •:• Khi thay ddi chiiu cao cya cap lieu Diiu kien thay ddi la chieu cao cya cap lieu (nang sua't cdp lieu) Kit qua thf nghiem neu d Bang Nhan xet: Tii kit qua thf nghiem Bang va rut mpt sd nhan xet sau: • Khi thay ddi chiiu cao ngudng tran ty 40 mm HOI NGHI KHOA HOC KY THUAT MO TOAN QUOC LAN THI/XX '"i III] 2.2 Thi nghiem tuyen than cap hat 6+50 mm Dieu kien cd djnh la nang suat cap lieu, ehiiu cao ngodng tran, tan sd dao dpng va gdc nghieng mat lodi Thdng sd thay ddi la bien dp dao dpng eua mat ludi Kit qua thi nghiem neu d Bang Nhan xet: TO sd lieu Bang cd mdt sd nhan xet sau: •:• Khi tang bien dp dao dpng eCia ludi tO 60 len 70mm, dp tro than sach giam ty 27 (28) % xudng 24 % va dp tro da thai tang ty 77 % len 80 %, thu hoach than sach tang ty 37 % len 42 % Niu tiip tue tang Bang Thi nghiem thay doi chieu cao ngudng tran bien dp dao dpng len 75 mm, dp tro than sach tang len 33,46 % va da thai dp tro giam xudng cdn 78,8 % San pham A, % Y,% Khi tuyen than cap hat 6+50 mm, dp tro tren 58 % vln Chiiu cao ngodng tran 40 mm cd the lay dope tiian sach thudc loai cam 4b din 31.73 43.65 Than sach cam HG va da thai cd dp tro tren % 79.56 51.28 Da thai Bang Ke't qua tuyen cap hat 6+50 mm 49.65 5.07 Mun San pham A, % Y, % 57.16 100.00 Than dau Bien dp dao dpng 60 mm Chiiu cao ngudng tran 45 mm din 50 mm: thu hoach than sach giam ty 43,65 % xudng edn 36,28 % va dd trd than sach giam ty 31,73 % xudng cdn 23,83 '%; thu hoaeh da tang ty 51,28 % len 57,16 % va dd tro da dao dpng khoang 79 % d i n 76 % •:• Khi thay ddi chieu cao cCfa cap lieu ty 80 mm din 90 mm: thu hoaeh than sach tang ty 37,33 % len 39,88 % va dp tro than sachi tang ty 22,74 % len 26,94 % Thu hoaeh da thai giam ty 57,05 % xudng cdn 53,8 % Op tro da dao ddng ty 79 % din 80 % 22.74 Than sach 37.21 27.02 79.95 57.05 Da thai 56.43 5.62 Mun 57.27 100.00 Than dau Chieu cao ngudng tran 50 mm 23.83 36.28 Than sach 76.76 57.16 Da thai 54.79 6.56 Mun 56.12 100.00 Than dau Da thai Mun Than dau 58.08 4.71 100 77.57 59.37 57.90 Than sach 37.33 Bang Ket qua thi nghiem thay doi chieu cao cCfa cap lieu San pha'm y, % A, % Chiiu eao eCfa cap lieu 80 mm Than sach 37.33 22.74 Da thai Mun Than dau 57.05 5.62 100.00 79.95 56.43 57.27 Chiiu eao eCfa ca'p lieu 85 mm Than sach 41.18 27.25 Da thai 53.41 80.53 Mun 5.41 47.27 Than dau 100 56.79 Chiiu eao cCfa ca'p lieu 90 mm 39.88 Than sach 26.94 53.8 Da thai 79.68 6.32 Mun 50.23 100 Than dau 56.79 Bien dp dao dpng 65 mm Than sach 42.25 28.67 78.6 52.7 55.43 5.05 56.33 100 Bien dp dao dpng 70 mm 23.7 40.42 Than sach 80.51 54.31 Da thai 57.91 5.27 Mun 56.36 100 Than dau Bien dd dao ddng 75 mm 33.46 43.07 Than sach 78.80 Oa thai 50.52 56.51 6.41 Mun 57.84 100.00 Than dau Da thai Mun Than dau •:• Vi may lang thf nghiem ehi thiet k i de tuyen than d i n ed hat 35 mm, nhung tuyin den cd hat 50 mm kit qua tuyen v l n kha tdt Khi thiet k i may lang edng nghiep ed hat dUa tuyen d i n 50; 100 mm chac chan kit qua tuyen se tdt hdn Ket qua thi nghiem tuyen than md Ha Tu 3.1 PhUdng an tuyen than cap hat 6+35 mm Than cap hat 6+35 mm doa tuyen tren may lang cd dp tro eao tren 73 %, vi vay mue dfch cua CONG NGHIEP MO SO - 2009 CNM HOI NGHj KHOA HOC KY THUAT MO TOAN QUOC LAN THUT XX nghien cau la tan thu than sach, dd ed hai phOPng an tuyen la: tuyen lay than sach cd tro eao (thude cam 6b HG) va phUPng an tuyen de lay than sach cd dp tro thap (cam HG) K i t qua thf nghiem neu b Bang va Bang 3.2 PhUdng an tuyen than cip hat 3+15 mm Than cap hat 3+15 mm cd dp hat nhd hdn so vdi cap hat 6+ 35 mm, dd cap hat khd tuyen trpng lyc hPn Khi thf nghiem tuyen than cap hat 3+15 mm eung lay hai loai tiian sach, loai cd dp tro eao (cam 6bHG) va loai ed dp tro tha'p (cam 6a HG) K i t qua thf nghiem neu d Bang 10 va Bang 11 Bang 9: Thi nglem tuyen cap hat 6- 35 mm de lay than sach cd tro thap San pham Than sach Oa thai Mun Cdng Bang 10 Thi nghiem tuyen cap hat 3+15 mm de lay than sach cd tro cao Nhan xet: T y k i t qua thf nghiem tuyen than Ha Tu cap hat 6+35 va 3+15 mm cd nhan xet sau: •:• Than cap hat 6+35 mm cd dp tro tren 73 %, sau tuyen tren may lang lodi chuyen dpng cong cd the lay dope than sach thupc cam HG d i n cam 6b HG, dp tro da thai tren 83 % Bang Thi nghiem tuyen cap hat 6+35 mm de lay than sach cd tro cao San pham Than sach Da thai Mun Cpng Thu hoach % So vdi So vdi than dau than tuyen 5,05 19,35 17,46 66,83 3,61 13,82 26,12 100,00 Thu hoaeh % Op tro % ; So vdi So vdi than dau than tuyen 30,15 : 4,2? ' 16,12 86,74 • 17,49 66,97 63,13 4,42 16,91 73,62 26,12 100,00 San pha'm Than sach Oa thai Mun Cdng Thu hoaeh % So vdi So vdi than tuyen than dau 9,54 36,62 12,44 47,75 4,07 15,63 26,05 100,00 Op tro % San pham 44,84 83,70 64,63 73,62 Than sach Da thai Mun Cpng Thu hoaeh % So vdi So vdi than dau than tuyen 6,94 26,64 14,38 55,21 4,73 18,15 ,, 26,05 100,0Q Sang ludi ^6 va (()50 (lOO)mm Nhat tay Cam -6mm ; I Than sach Da thai May lang Da Be CO dac Dap -15mm ' nr pp Cam -15mm * r Cam bun H.LSa ^' f Node tuan hoan cdng nghe tuyen than chat lugng thap Md Nui Beo CONG NGHIEP MO SO - 2009 42,8 82,55 61,85 64,76 ; : i ; Bang 11 Thi nghiem tuyen cap hat 3+15 mm de lay than sach cd tro tha'p Than chat lUpng xa'u Cam Udt Op tro % ; Op tro % ! 36,08 81,43 59,29 65,33 J HOI NGHI KHOA HOC KY THUAT MO TOAN QUOC LAN THUT XX Than chat JLTdng xau mu, i.T!Tr.«^«fife.1^^B!MrKS«S!ft^iffcP'SiL.^S«,T UtiHillSZMW ' " s T St Sang lo 11/61 20 mm Phan cap ruot xoan £)a thai + 20 mm May ang Cam Kdt Oa Than sach-20 Be lang ngoai trdi Cam biJn Nu'dc tuan hoan H.2 Sa cdng nghe tuyen than chat lugng tha'p md Ha Tu • Than ca'p hat 3+15 mm cd dp tro tren 65 %, sau tuyen tren may lang ludi chuyen ddng ed the lay dope than sach thudc loai cam HG d i n 6b HG, dp tro da thai tren 81 % • Vl than dua tuyen cd dp tro eao nen thu hoaeh than sach ehi dat tO d i n % Ket luan va kien nghj 4.1 Ket luan TO kit qua nghien cyu tuyen mau than md Nui Beo va md Ha Tu ed mpt sd kit luan sau: Hai mlu than nghien cyu cd dp tro cao (tren 45 %), thupc loai than chat lupng tha'p khdng nam Tieu ehua'n Viet Nam Than cap hat - mm thupc md Nui Beo va cap -3 mm thude md Ha Tu ed dp tro dodi 45 % (dat Tieu ehua'n Viet Nam), vi vay, can tach hai cap hat trudc tuyen Than eae cap hat 3+15; 6+35; 6+50 mm dua tuyen tren may lang ludi chuyen ddng ban edng nghiep cd the lay than sach dat Tieu ehua'n Viet Nam (to cam 4b HG den cam 6b HG), theo yeu eau lay than sach va phu thupc vao dp tro than dua tuyen Khi tuye'n than cap 3+15; 6+35; 6+50 mm thupc mo Ha Tu va Nui Beo, cd the la'y dupe da thai cd dp tro tren 80 % Ca'p hat than dUa tuyen cang eao ket qua tuyen cang td't Ddi vdi may lang ludi chuyen dpng cong cd the dua gidi han tren than dua tuyen den 100 mm hoac cao hdn nUa 4.2 Kie'n nghj May lang ludi chuyen ddng cong ed nhiiu uu diem tuyen than cd dp tro cao Dya vao kit qua thf nghiem tren may lang ban edng nghiep bao eao kiin nghi sCf dung hai sd dd edng nghe tuyen neu d H.1vaH.2.n Ngudi bien tap: Trin Van Trach i4fcii'Jwlft^.-ilirik!.-ia;ii-'f ' i ' =r 35Ji- teK5^„Si i ipprn 5ppal: si^aratipn j d p e r ^ f f l | g | p # i i : m^ ] fecllerndvableileve jigsiw w S ^ d r n Hh taand Ooi mat ludn cong minh, ddi tai ludn lya Tuc ngCrNga So viec nao vopt qua gidi han cua sy c hoa deu c6 nen tang bat dn djnh Seneca Cud'n sach la ngodi ban tdt: ta chJ nd, nd khdng gian; ta tin todng no, r khdng ndi dd'i Ngan ngd Tho NhTKy VTH suu tam CONG NGHIEP MO SO - 2009 ... Thi nghiem tuyen cap hat 3+15 mm de lay than sach cd tro cao Nhan xet: T y k i t qua thf nghiem tuyen than Ha Tu cap hat 6+35 va 3+15 mm cd nhan xet sau: •:• Than cap hat 6+35 mm cd dp tro tren... THUT XX nghien cau la tan thu than sach, dd ed hai phOPng an tuyen la: tuyen lay than sach cd tro eao (thude cam 6b HG) va phUPng an tuyen de lay than sach cd dp tro thap (cam HG) K i t qua thf... qua tuyen v l n kha tdt Khi thiet k i may lang edng nghiep ed hat dUa tuyen d i n 50; 100 mm chac chan kit qua tuyen se tdt hdn Ket qua thi nghiem tuyen than md Ha Tu 3.1 PhUdng an tuyen than