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Thong tin khoa hpc cong nghe m o vi DE X U A T GIAI PHAP CONG NGHE NANG CAO HIEU QUA LAM VIEC CUA HE T H O N G T U Y E N N O I NHA MAY T U Y £ N THAN NAM CAU TRANG ThS Mai Van Thinh Vien Khoa hoc Cdng nghe Mo- Vinaeomin Bien tap: ThS Hoang Minh HUng Tomtit: Bdi bdo trinh bdy ket qud nghien cicu ddnh gid hien trgng hogt dong vd de xudt gidi phdp ky thugt cong nghe ndng cao hieu qud ldm viec cua he thong tuyen noi cot tgi Nhd mdy tuyen than Nam Cdu Trdng nham ndng cao hieu qud sdn xudt kinh doanh cho Cong ty tuyen than Hon Gal M6' dau Nha may tuyen than Nam C l u Trang thugc Cdng ty tuyin than Hdn Gai duge hang BMCH eiia Ue thiet ke vdi cdng suit 2,0 trieu tin/nam tuong duang 450 tin/gid, dugc dua vao sir dung tir nam 1996 Trong dd, he thong xir ly bun nude duge thiet ke vdi edng suit t i i da 125.000 tan biin/ nam, tuang duang 22 tIn/gid Do tinh chit va san lugng than nguyen khai d p vao Nha may theo thyc t l c6 nhieu thay doi so vdi thiet ke: ty le cap hat (0-0,1) mm than nguyen khai Idn g i p 2,0 d i n 2,5 lan, san lugng than c l p vao Nha may tang 1,5 -1,6 lan, khii lugng than bun tir 420.000 tin/nam - 500.000 tin/nam Idn g i p 3,5-4 i l n , nen he thong xix ly biin nude thilt k l ban d i u khdng cdn dap irng dugc yeu d u thyc te san xuit Oe nang cao nang lyc tuyen va xit ly thu hoi bun nudc, dong thdi dap img nhu d u than chit lugng cao c l p eho cac hd san xuit xi mang, nam 2010, Cdng ty tuyen than Hdn Gai da d i u tu l i p dat dua vao sir dung day chuyen tuyen noi vdi cdng suit 500.000 tan/nam tuong duang 110 t i n / gid Thilt bj chinh day chuyln tuyin noi bao gdm: 03 may tuyen noi edt, 02 be eo dac, 01 may Igc ep tang ap va 03 may Igc ep t i m Ket qua nghien cii'u danh gia hien trang va de xuit cac giai phap ky thuat cong nghe nang cao hieu qua lam viec cua he thong tuyen noi Nha may tuyen than Nam Cau Trang 2.7 Gioi thifu hien trang luv trinh cong nghe he thing tuyen nii Sa d l luu trinh cdng nghe he thing tuyen noi Nha may tuyin than Nam C l u Trang hien duge trinh bay hinh a»BCB(i:Oi * » - t n T Bua cip beu \ £) Diem lav mau Maytuveaik)ic6t(41l: L-oc^plan^ap ,41-i A) II' ,'pni] in\ -!.;? -'yj) 5u.' khd m^-^!^ Ph iff) 'liar''' rtm \ Nutrc loc \'-.-.n tai' Nuoc loc Hinh Sado luv trinh cong nghe he thong tuyen ndi Nha may tuyin than Nam Ciu Tring hien tuyen giai doan nhu thiet k l ban d i u hoac tuyen giai doan theo luu trinh cdng nghe d i tao ciia nha may Khi tuyen giai doan, giai doan b l tri may tuyen vet de tuyen lai san pham thai eiia may tuyen giai doan Khi tuyen giai doan, giai doan sau tuyen vet lai san pham thai eiia giai doan trude Hien nay, Nha may dang thye hien tuyen nil giai doan nhim mue dich nang eao tro biin thai tuyen noi ding thdi giam qua tai eho may Ige ep tang ap Nhan xet: Trong luu trinh d n g nghe he thing tuyen noi Nha may tuyen than Nam C l u Trang hien nay, san pham nudc sau may Igc ep tang ap va may Igc ep Luu trinh cdng nghe he thing tuyen noi Nha tam deu dugc dua ve be d dac cao trdn 601, 602 may tuyin than Nam C l u Trang hien cd the cung vdi san pham dudi thai ciia he thing tuyen • ' " ^ ^ ^ so 2/2017 * CNTU^iNyBIFili^TrHl^- KHOANG SAN Thong tin khoa hpc cong nghe mo ciia cac may tuyen noi cot 411, 410 va 409 dugc trinh bay bang Nhan xet + Ham lugng pha ran d p vao eae may tuyen n i l Khi san pham nudc sau may Igc ep tang ap va may Igc ep tam d n lan nhieu bun than vdi tro t h i p se lam giam tro ehung can be d dac, gay m i t mat than sach vao san pham thai he thing tuyen noi Bang Kit gua xac d'inh ty le rin/long bdn cip lieu 2.2 Kit qua danh gia hieu qua lam viec cua cac va cac san phim cua may tuyin ndi 411, 410 va 409 thiit bi he thing tuyin nii Nha may tuyin Ham Iwang rin (g/lit than Nam Cau Tring Oe danh gia hieu qua lam viec eua cac thilt bj he thing tuyen noi Nha may tuyen than Nam c l u Trang, nhdm tac gia da tiln hanh ily cac m l u than bun d p lieu va cac san phim ciia cac thilt bj tuyen noi, Ige ep, be cd dac de gia edng phan tieh xae djnh cac chi tieu rin/ldng, phin hat, tro TT San pham 1 May tuyin ndi cot 411 (giai doan 1) 88,00 156,40 Vao 224,00 220,60 Than sach 55,00 104,50 Ouoi thai May tuyin ndi cot 410 (giai doan 2) 104,50 88,00 Vac 224,00 236,40 Than sach 55,00 95,50 Duoi thai May tuyin nil cot 409 (giai doan 3) 55,00 Vao 95,50 Than sach 262,60 266,00 33,00 Duoi thai 85,80 ThiPC te Thijcte/ Thiet ke Thiet ke (%) // 2.2.1 Thiit bi tuyen noi cot Ket qua ily m l u phan tich xac dinh ty le ran ldng ciia biin d p lieu va cac san pham sau tuyin eiia eae may tuyen noi cot 411, 410 va 409 duge trinh bay bang 1 /// 177,73 98,48 190,00 118,75 105,54 173,64 173,64 98,72 K i t qua ily m l u phan tich xac djnh phin 260,00 hat, chit lugng bun d p lieu va cac san pham Bang Kit gua lay mau phan tich xac djnh phin hat, chit luong bun cip lieu va cac san pham cua cac may tuyin ndi cot 411, 410 va 409 Ty le TH cac cap hat (%) TT Cac san pham -0,10 mm 0,1-0,5 mm 0,5-1 mm +1,0 mm Ak TH Ak TH Ak TH Ak TH Ak (%) (%) (%) (%) (%) (%) (%) (%) (%) (%) 41,56 100,0 34,55 May tuyin ndi cot 411 (giai doan 1) Vao 82,61 36,32 13,60 23,25 2,74 34,64 1,05 Than sach 88,24 13,79 11,41 5,62 0,35 12,65 - Duoi thai 79,56 52,41 16,08 25,95 3,46 36,25 0,90 25,95 3,46 36,25 0,90 // 100,0 12,85 43,27 100,0 47,51 43,27 100,0 47,51 May tuyin ndi cot 410 (giai doan 2) Vao 79,56 Than sach Duoi thai /// 52,41 16,08 86,88 14,81 12,70 5,16 0,38 5,95 0,05 6,84 100,0 13,55 78,59 59,71 17,49 28,65 3,07 38,84 0,85 45,52 100,0 53,52 45,52 100,0 53,52 - 100,0 13,86 100,0 59,01 May tuyin ndi cot 409 (giai doan 3) Vao 78,59 59,71 17,49 28,65 3,07 38,84 0,85 Than sach 85,72 15,33 14,09 5,02 0,19 6,85 - Duoi thai 77,18 67,46 21,07 29,43 1,62 41,88 0,14 47,21 IV Cong TH Cong chung he thdng tuyen ndi Vao 82,61 36,32 13,60 23,25 2,74 34,64 1,05 41,56 100,0 34,55 Than sach 87,69 14,16 11,96 5,47 0,34 10,76 0,01 6,84 100,0 13,10 Duoi thai 77,18 67,46 21,07 29,43 1,62 41,88 0,14 47,21 100,0 59,01 e iAS-ANZ I50 0 KHCNM SO 2/2017 * CN TUYEN, CHE BIEN THAN - KHOANC; SAN Thong tin khoa hpc cong nghe m o + K i t qua s6 lieu thing ke cho thay, nang suit noi 411; 410; 409 theo thyc t l d i u cao hon so vdi thilt k l tir 1,2 -1,8 i l n Ham lugng pha ran bun than d p lieu vao he thong tuyen noi hien d p lieu eao la mgt cac nguyen nhan lam tir (60-80) tIn/gid dat (54-72)% so vdi thilt k l (110 tin/gig) giam hieu qua tuyen noi 2.2.2 Thiit bi loc ep tang ap + Trong bun than d p lieu vao he thing tuyen K i t qua i l y mau phan tieh xac djnh ty le ran noi, d p hat +0,10 mm chilm ty lg (17-18)% vdi tro (25-27)% Sau qua trinh tuyin noi, d p hat Idng, am, dg tro bun d p lieu va eae san pham +0,10mm san pham duoi thai culi eung ed ty- eiia may Igc ep tang ap 414 dugc trinh bay le thu hoach la (22-24)% vdi tro (30-31)%, nhu bang vay, tro d p hat +0,10mm san phim dudi Nhan xet: thai tuang d i i thip va tang khong nhieu so + am san pham bun khd sau Igc ep tang d p lieu, tro d p hat -0,10mm ap til (23-26)% trung binh 25,45% eao ban so vdi san phim thai cd tro tang rit cao so c l p thilt k l (W=20%) lieu (tang tir 36,32% len 67,46%) Oieu eho + Hieu suit khir nude ciia may Igc ep tang ap thiy, hieu qua tuyin noi d i i vol d p hat +0,10mm dat 62,56% thip ban so vdi thiet k l (100%) la rit thip, d p hat +0,10mm san pham dudi + San p h i m nude sau Ige ep tang ap cdn chira thai la mgt nhCi'ng nguyen nhan lam eho bun than vdi ham lugng pha r i n tif (90 -110) gam/ tro san pham dudi thai tuyen noi ed tro thip Vi lit Og tro cua bun chira san pham nude Ipc vay de tang tro san phim dudi thai tuyin noi, ep tang ap trung binh tir (10-15)% Hien tai, nudc d n ban che tdi mirc thap nhit ty le d p hat +0,10 sau Ige ep tang ap dugc bam ve be cd dac cao mm cd d p lieu vao tuyen noi trdn 601, 602, hda chung vdi san pham thai + Od tro biin than d p lieu vao he thing tuyen he thong tuyen noi (do tro 58-66%) se lam tro nil hien tu' (33-36)%, tmng binh 34,55% Than Chung ciia bun giam, day la mgt cac nguyen saeh chung eua may tuyen noi cd ty le thu hoach nhan lam cho tro ciia san pham banh than sau tir (52-54)% vdi tro tu' (10-19)% tuang duang Igc ep khung ban thip ban dp tro eiia san pham than cam San phim dudi thai ehung ciia he thai he thing tuyen noi thing tuyen noi ed ty le thu hoach tu- (46-48) % vdi + s l lieu theo ddi thing ke cho t h i y nang suit tro tu' (58-66)% trung binh 59% Bang Kit gua xac dinh ty le rin /long, im, dd tro, bdn cip lieu va cac san phim va hieu suat loc ep cua may loc ep tang ap 414 Do am W(%) HL ran (g/lit) TT Do tro Ak (%) San pham Thuvte Thiet ke (g/lit) (g/lit) 236 Bun c l p lieu 13,10 228,49 NU'aC sau Ipc 12,55 99,95 Biin kho 13,17 992,02 1.091 Thifc te / Thiit ke (%) 292 127 Thirc te VV(%) Thiet keW (%) 78,77 78,12 90,33 100,0 25,45 20,0 Hieu suit Igcep thuv te, h (%) 62,56 Hieu suit Igc ep thiet ke h(%) 100 Bang Kit qua xac dinh ty le rin /long, im, tro bun cip lieu va cac san phim cua bi co dac 601, 602 Do am W(%) HL rin (g/lit) TT San pham Do tro Ak (%) Thuv te (g/lit) Thiet ke (g/lit) Vao 50,46 79,95 24,00 Tran 44,98 5,62 Can 50,94 431,82 281,00 Thuv te / Thiet ke (% 333,13 153,67 Thuv te W(%) Thiet ke W(%) 92,21 97,62 99,44 100,00 62,25 74,31 KHCNM SO 2/2017 * CN TUYEN, CHE BIEN THAN - KHOANG SAN H.suit CO dac thuv te h (%) H.suat CO dac thiet keh(%) 94,20 100,0 Thong tin khoa hpc cong nghe m o may Ige ep tang ap hien tif (32^5) tIn/gid dat (40-55)% so vgi d n g suit thilt k l (80 tIn/gid) 2.2.3 Bi CO dac 601, 602 K i t qua Ily m l u phan tieh xae djnh ty le r i n Idng, I m , tro biin d p lieu va cac san phim d a be d dae 601, 602 duac trinh bay bang Nhan xet: + Nude tran be d dae d ham lugng pha r i n taing binh 5,6 g/lit ehua dat yeu d u theo thilt ke Hieu suit d dac dat 94.2% thip han so vdi thilt kl(100%) + Sd lieu theo ddi thing ke cho thiy, nang s u i : be d dac 601, 602 hien tir (28-40) tin/gio dat (45-65)% so vdi d n g suit thilt ke (62 tIn/gid) 2.2.4 Thiit bi loc ep tim K i t qua ily m l u phan tich xae dinh ty le ran Idng, am, tro bun d p lieu va cac san phim ciia eae may Igc ep t i m 431 432, 433 dugc trinh bay bang Nhan xet: + Op am san phim bun khd sau lge ep t i m taing binh 26,9% cao ban so vdi thilt k l (W=25%) + Hieu suit khir nudc ciia may be ep t i m dat 96,99% thip hon so vdi thilt k l (100%) + Op tro san pham biin khd sau lge ep t i m hien tif (49-52)% thip han (8-9)% so vdi dp tro san pham thai ciia he thong tuyin ndi (A' toing binh 59% ) + San phim nudc sau Igc ep t i m cdn chira biin than vdi ham lugng pha rin tir (18 - 25) gam/lit Op tro cua bun chira san pham nudc Igc ep t i m tnjng binh tif (42-51)% Hien tai, nudc sau Igc ep t i m dugc tx>'m v l be d dac cao trdn 601, 602 hda chung vdi san phim thai he thing tuyen noi (do tro 58-66%) se lam giam dp tro ehung ciia bun, day la mgt cac nguyen nhan lam cho tro d a san pham banh than sau Ipc ep khung ban thip han tro cua san pham thai he thong tuyen noi + Sd lieu theo doi thing ke cho thiy, nang suit may Igc ep t i m hien tu' (28^0) tIn/gid, dat 7098% so vdi d n g suit thilt k l (40 tIn/gid) 2.3 Gial phap ky thuat cong nghe nang cao hieu qua lam viec cua he thing tuyin nil Tu- kit qua ily mau phan tfch danh gia hien trang hieu qua boat ddng eiia cae thilt bj he thing tuyin noi Nha may tuyen than Nam C l u Trang, d l xuit cae giai phap ky thuat d n g nghe nang cao hieu qua hoat dgng cua cae thilt bi nhu sau: + Dii v&i cac thiet bi tuyin noi cot: Bd sung them nuac vao bun d p lieu may tuyin noi de giam ty le r i n Idng, ngudn nudc bo sung nen ily tir san pham nudc sau Igc ep d l ban c h i biin than tro thip san phim nude lge ep quay trd lai be d dac 601, 602 nhim giam m i t mat than sach vao san phim dudi thai tuyen noi - Han ehl tdi mifc thip nhit d p hat +0,10 mm d d p lieu vao tuyen noi bang each nang cao hieu qua lam viec cua cac xoay lie phan d p , xoay lie d dae khau tuyin may ling, kiem tra ludi sang khir nudc neu bj mdn, rach hoac hu hdng phai khic phue sira chu'a nham han ehl d p hat +0,10 mm dl vao be d dac 120 + Dii vai cac may loc ep tang ap, loc ep tim: - San pham nudc ciia cae may Igc ep tang ap chira bun than dp tro thip, dua tuin hoan v l be d dae 601, 602 da lam giam tro cua san phim dudi thai tuyen noi, day la mgt cac nguyen nhan chinh dan den tro san pham bun khd sau Igc ep t i m hien tif (49-52) % thip hon (8-9) % so vdi tro san phim thai ciia he thing tuyen noi (59%) Vi vay d n phai thudng xuyen kiem tra vai Igc, dudng Ing bun nudc, van Bang Kit qua xac djnh ty le rin/ldng im tro.bun cip lieu va cac sin phim va hieu suit loc ep cua cac may loc ep tim ugamw(%) ^^^^ J^J^ HL ran (g/lit) TT San pham Biin cap lieu Nudc sau loc Biin kho Do tro Ak (%) 50,94 47,04 51.27 Thuv ti (gMit) Thiit ke (g/lit) 431.02 22.85 965.81 281.00 1.125.0 Thijvte W(%) Thiet ki VJ(Vo) suit Igcep thuvte h (%) suit Igcep thiit ke h (%) 153.39 62.31 75 02 100.00 25.00 96.99 100 85,85 97.73 26.94 Thijv te / Tliiet ke (%) KHCNM SO 201- ' CN TUYEN, CHE BIEN THAN - KHO.ANG SAN ISO 0 Thong tin khoa hpc cong nghe mo va cae linh kien khae ciia may Igc ep tang ap va may Igc ep t i m - n l u bj hu hong d n phai kjp thdi sira chu'a khae phuc nhim ban e h l tdi da ham lugng pha ran cd san pham nudc Igc ep, nang cao cdng suit hieu qua Igc ep, giam am san phim bun khd sau Ige - C i n tinh toan phuang an dua phin nuac sau Igc ep ve be d p lieu cho tuyen noi thay vi dua ve be 601, 602 nhim giam mit mat than sach vao san pham duoi thai tuyen noi + Dii vai bi co dac 601, 602: Nude tran cac be xuong n l n khu tuyen noi, cd tro chi tir (30-40)%, d n dugc bam v l be cap lieu vao tuyen noi, khong bam ve be eo dac 601,602 vi biin than nude tran n l n cd tro thap han tro bun thai tuyen noi nen dua vao be cd dac, can be co dac se eo tro thip ban san phim dudi thai tuyen noi Ket luan + Oe dap irng yeu d u thyc te san xuat tieu thu, Nha may tuyen than Nam Cau Tring sau nhilu iln eai tao da nang edng suit len 3,2 trieu tin/nam, g i p 1,6 Iln so thilt k l ban dau Tuy nhien, k i t qua lay m l u nghien eiru danh gia hien trang boat ddng eiia he thong tuyen noi eho thiy, cac thiet bj tuyin noi, Ige ep, be ed dae dang boat ddng vdi cac thdng sd cdng nghe chua dat theo thilt k l ; Og tro san phim dudi thai tuyen noi thip ban thilt ke, dp am san pham bun khd sau Ige ep tang ap va Igc ep t i m cao ban thilt k l , ham lugng biin san phim nude sau Ige ep cao han thiet k l Nang suit cae thilt bj thip ban so thilt k l + Oe nang cao hieu qua boat dgng ciia he thing tuyen noi tai Nha may tuyen than Nam C l u Trang, d n ap dung cac giai phap ky thuat d n g nghe nhu trinh bay ehi tilt muc 2.3 Trong dd, cac giai phap chinh bao gom; - Giam ty le ran Idng d p lieu vao may tuyen noi - Han che tdi da d p hat +0,10 mm d d p lieu vao tuyen noi - Han c h i toi da ham lugng pha r i n san pham nugc Igc ep dua ve be cd dac 601; 602 Khdng bam nudc tran nen khu tuyen noi v l be d dae 601, 602 - Thudng xuyen kiem tra cae thilt bj tuyen noi, may Igc ep t i m , may Igc ep tang ap, sang khir nude, xoay lie phan d p , xoay lie d dac de thay t h i eae bg phan linh kien bj mdn hdng nham nang cao edng suit va hieu qua lam viec cua thilt bj he thing biin nudc Khi ap dung cae giai phap ky thuat edng nghe nhu de xuit se gdp phin giai quyit cae v i n d l d n t i n tai, nang cao hieu qua lam viec eiia he thing tuyen noi - Igc ep, giam chi phi san xuit, nang cao hieu qua san xuit kinh doanh cho Cdng ty tuyen than Hdn Gai./ Tai lieu tham khao: Mai Van Thjnh vannk (2016) Bao eao de tai giai doan Danh gia hien trang cong nghe va nghien cuv lira chon cac giai phap ky thuat nang cao hieu qua hoat dong cda he thong xir ly bun nuoc Nha may tuyin than Nam Ciu Tring nhim nang cao hieu qua san xuat kinh doanh cua Cong ty tuyin than Hon Gai Vien Khoa hoc Cong nghe Mo - Vinaeomin Nimal Subasinghe, Chul-Hyun Park (2014) Fine coal beneficiation by column flotation FAN Maoming, Tao Daniel, Honaker Rick (2013), Effect of Nanobubbles on the Flotation of Different Sizes of Coal Particle J.S Laskowski (2001), Coal Flotation and Fine Coal Utilization Research results on the current situation and proposal of technologicalsolutions for iricreasing the operating-efficiency of the column-flotationline in Nam Cau Trang coal preparation plant Summary: MSc Mai Van Thinh Institute of Mining Science and Technology - Vinaeomin This paper presents the results of research and evaluation of the current operating-efficiency of the columnftotalion-line in Nam Cau Trang Coal Preparation Plant The paper also proposes technological-solutions to improve the operating-efficiency of the column-flotation-line to increase the efficiency in business and production operations for Hon Gai Coal Companv KHCNM SO 2/2017 * CN TUYEN, CHE BIEN THAN - KHOANG SAN ... Iwang rin (g/lit than Nam Cau Tring Oe danh gia hieu qua lam viec eua cac thilt bj he thing tuyen noi Nha may tuyen than Nam c l u Trang, nhdm tac gia da tiln hanh ily cac m l u than bun d p lieu... giai phap ky thuat nang cao hieu qua hoat dong cda he thong xir ly bun nuoc Nha may tuyin than Nam Ciu Tring nhim nang cao hieu qua san xuat kinh doanh cua Cong ty tuyin than Hon Gai Vien Khoa... nghe nang cao hieu qua lam viec cua he thing tuyin nil Tu- kit qua ily mau phan tfch danh gia hien trang hieu qua boat ddng eiia cae thilt bj he thing tuyin noi Nha may tuyen than Nam C l u Trang,
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