kliu Udng Thifdng

Thong tin khoa hoc cong nghe m o

NGHIEN ClfU DE XUAT DAY CHUYEN TUYEN THAN CUC TRONG THAN DON XO ^{D A N G} CONG NGHE HUYEN PHU TANG QUAY

tai kliu Udng Thifdng - Cong t y t h a n Udng IBi

For dealing with the problems in recovering coal and increasing coal quality, increasing the productive capacity, meeting coal demands for domestic utilization and export, it is necessary for Uong Bi Coal Company to set up the lump coal separation line with the drum flotation technology at Uong Thuong mine site. Basing on the input coal properties at this site, the paper provides a proper coal separation line.

ThS. NGUYIN HQU NHAN KS. NGUYIN NGOC TAN VA NNK

Vien Khoa hgc Cdng nghg Mo- TKV

I. Sir can thiet phai xay dung day chuyen tuyen than cue trong than don xd bai che bien than Uong ThUdng

Mdt trong nhQng khu viic che bien than nguyen khai hien nay eda Cdng ty TNHH MTV than Udng Bf la bai che bien than Udng ThUpng. Bai che bien than Udng ThUpng vdi nhiem vu sang che bien than nguyen khai cda cac vdng nhu: Ddng Vang Danh, canh Ga, Ddng Vdng. Hien nay, Cdng ty than Udng Bf dang dau tu xay dung hai day chuyen sang 500T/ca va lOOOT/ea tai mat bang bai che

bien than Udng ThUdng, de gia cdng che bien than nguyen khai do cac ddn vj thanh vien trong cdng ty san xua't. Theo ke hoach san xua't kinh doanh cda Cdng ty than Udng Bf, khu vUc bai che bien than Udng Thupng tCf nay cho tdi nam 2015 vdi san lUdng tang tii 15 % tdi 20 % vatdi nam 2015 san lUdng than nguyen khai vao sang tuyen chd bidn dat khoang 755.000 ta'n.

Trong qua trinh sang tach cam khd va nhat tay than cue se tao ra mpt chdng loai ia than don xd, ddng thdi tai khu

viic sang che bien than kho Tan Dan, moi nam cung san xua't ra khoang 150.000 ta'n than don xd. San lUpng than don xd can xii 1^ tai bai che bien than Udng ThUpng trong nhumg nam tdi du kien la khoang 400.000 tan/nam. Neu chi cd day chuyen sang tach cam, nhat thd cdng than cue va than don xd ea'p hat (15- 50)mm chd yeu dupe nghien thanh than cam cha't lUdng tha'p se gay tdn that than cue ma gia tri than cue cao hdn ra't nhieu gia tri than cam, ngoai ra cung sinh ra than cam nghien chat lUdng tha'p rat khd tieu thu.

Bang 1. Td'ng hgp thinh phin d^ h^t cua than don xd bSI ch§'bii'n than Udng Thug/ng

TT

1 2 3 4 5 6 7 8 9 10

CSp hat (mm)

+ 80 5 0 - 8 0 3 5 - 5 0 1 5 - 3 5 6 - 1 5

3 - 6 1 - 3 0 - 1 Td'ng ci^ng

0-15

TH(%)

0,00 15,43 21,57 49,50 7,61 2,25 1,50 2,14 100 13,50

D^tro Ak(%) 0,00 51,35 49,03 42,13 31,40 31,42 30.74 30,50 43,60 31,19

Lu9 tfch (-) TH(%)

0,00 100,00

84,57 63,00 13,50 5,89 3.64 _„2J4_ „

Ak(%) 0,00 43,56 42,14 39.79 31.19 30.91 30.60 30.50

Luy tich (+) TH(%)

0,00 15,43 37.00 86.50 94.11 96.36 97.86 100.00

Ak(%) 0,00 51.53 50.00 45.50 44,36 44.05 43,85 43.56

KHCNM SO 7/2010* CN T U Y £ N CHfi ^{B I £ N} THAN, KHOANG SAN

Bang 2. Ket qua phan tich chim noi cap hat (15-80) mm than don xd bai than Uong Thugng Cap ty

trong (g/cm')

-1.7 1,7-1,8 1,8-1,9 1,9-2,0 2,0-2,1 2,1-2,2 +2,2 Cong

Bijn Tong cong

TH(%)

Trong cap 26.35 15.20 5.17 3.54 3.25 2.15 44.34 100.00

Trong than don

x6 (%) 21.90 12.63 4.29 2.94 2.70 1.79 36.85 83.10 2.35 85.45

Do tro (%)

5.31 10.19 21.91 38.74 51.27 58.26 83.92 45.58 29.13 45.13

Phan ndi

TH (%) 26.35 41.55 46.72 50.26 53.51 55.66 100.00

Do tro A" (%) 5.31 7.10 8.73 10.85 13.30 15.04 45.58

Phan chim

TH (%) 100.00

73.65 58.45 53.28 49.74 46.49 44.34

06 tro A" (%) 45.58 59.99 72.94 77.89 80.68 82.73 83.92

TH cap ty trgng lan can

r±0,1

20.37 8.71 6.79 5.40

De giai quyet tdn tai tren, can phai dau tU xay diing mpt he thdng sang tuyen, che bien than don xd dap dng du cdng sua't sang hien tai va trong tuong lai vdi mue tieu dUa ed gidi hoa vao khau sang tuyen, thu hdi than cue, cai thien dieu kien lam viec eda ngudi cdng nhan, thu hdi triet de than sach. Day ehuyen tuyen than cue trong than don xd phai dap ling dupe nhiem vu la sang tuyen thu hdi than cue trong toan bp than don xd bai che bien than Udng Thupng va than don xd tii kho Tan Dan chuyen sang.

II. Nghien ciiu de xuat day chuyen sang - tuyen than cue trong than don xd khu Uong ThUdng

1. Kit qua nghien ciiu dac tinh than dua vao day chuyen tuyen

* Ket qua phan tich thanh phan cap hat

Cae sd lieu thdng ke ve thanh phan ea'p hat than don xd, tai bai che bien than Udng Thupng - Cdng ty TNHH MTV

than Udng Bf - TKV 6\jgc the hien trong bang 1.

* Ket qua phan tich thanh phan chim noi cac cap hat than don xd

Ket qua phan tfch chim ndi than don xd cap hat (15- 80mm) tai bai che bien than Udng Thupng ddgc the hien trong bang 2.

Nhan xet:

- Than cam (0 - 15) mm chiem ty le 13,5%, dat tieu ehua'n cam 5 cd the tieu thu true tiep nen can sang tach ra trudc khi dUa vao tuyen.

- Cap hat (15 - 80) mm chiem ty le khoang 86,5% vdi 66 tro khoang 45,50%, can 6\jgc tuyen thu hdi than cue cha't lupng eao, trdnh sii dung cdng nghe nghien thanh than cam chat lUpng tha'p phai pha trpn mdi tieu thu 6dgc.

- Ket qua phan tfch chim ndi cho thay, than don xd cap hat (15 - 80)mm tai bai che bien than Udng ThUpng cd tfnh kha tuyen la trung binh, tuyen tai ty trpng phan tuyen

la 1,9 g/cm^, va de tuyen tai ty trpng phan tuyen 2,1 g/em^.

Loai than don cap hat (15- 80)mm hoan toan eo the thu hdi dugc than cue vdi 66 tro

<10 % va da thai cd 66 tro >

80 % bang phUdng phap tuyen huyen phd tang quay

2. De xuat day chuyen cong nghe

can eii tl'nh kha tuyen than, ke hoach san xua't va che bien than cda Cdng ty than Udng Bf, can cd' ket qua ap dung cdng nghe tuyen than cue trong than don xd tai khu Than Thdng Nam Mau, de an de xua't chpn edng nghe tuyen than cue tii than don xd tai bai che bien than Udng ThUpng - Cdng ty than Udng Bf la huyen phu tang quay.

So do nguyen ly de xua't day ehuyen edng nghe tuyen than cue trong than don xd bai che bien than Udng ThUpng - Cdng ty than Udng Bf 6dgc minh hpa tren hinh 1.

* Thuyet minh so do cdng nghe he thdng tuyen than:

KHCNM SO 7/2010* CN T U Y £ N C H £ B I £ N THAN, K H O A N G SAN

Thong tin khoa hoc cong nghe m o

Than don xd ta cac cum sang

Bai than sa co S^na runa ladi 15 mm & 80mm

r

-15

Than cam khd

Nadc rCra

15-80 +80

S^ng rCfa bun

Than don xd ta Tan Dan Vat lieu qua cd

Tuyin HP tl trgng 2,05

r

Nadc rCra

Sang rCta da

9 thai t

Sang rCta than

1 ;

Da thai

Than Trung gian Than cue <-

...L .•

•>i T

Tuy^n ta chinh

I —H Tuven tif vet

TL ^ . . ^

Tuyen HP ti trong 1,85 Nadc rCra

I 1 i

Sang rCta than sach va than TG

BicddSc

Ho ISng bun

1.

r.

^{Tuyen ttr}

_I-

..-.-,

-»J Nadc tuan hoan

Than bun

Hinh 1. Dexuai sa dd cong nghe tuyen than eye trong than don xd - Bai che bien than Uong Thugng

Than don xd (15-80mm) tCr cum sang khd tren mat bang +151 dugc ehuyen ve ea'p vao hoc gat ea'p lieu eda day chuyen tuyen than. Trong trudng hpp khi he thd'ng tuyen bj sii ed, than don xd se 6\jgc 66 vao bai s u ed. Than don xd

tCr kho che bien than Tan Dan cung 6dgc 66 vao bai s u ed.

Than trong pheu cap lieu 6dgc mdy ea'p lieu lac ea'p len bang tai B1 va van chuyen dua vao sang tach cam khd S1 hai mat ludi 15mm va 80m de sang tach than cam khd (0-

15mm) cdn l l n trong than don xd va loai ea'p +80mm neu edn ed trong than vao day chuyen. Than cdm dudi sang S I 6agc bang tai B2 danh ddng thanh san pham cam khd, cap hat qua cd (+80mm) duoc loai bd de tranh lam

KHCNM SO 7/2010* CN TUY^N C H £ BI£N THAN, KHOANG SAN

Bang 3. Dukien can bang san pham day chuyen tuyen than eye trong than don x6 bai che bien than Uong Thugng

T T 1 II A

1 2 3 4 B

Cac san pham

Than vao tuyen San p h a m tuyen

Than sach Than cam kho Than cue

Than trung gian T C N Than bijn

Da thai

Thu hoach

(%) 100 100 59,61 13,00

34 10 2,61 40,39

Do tro '(%)

43,6 43,6 18,26 29,5 8,5 33,14 32,5

81

San luong (tan/nam) 2011

296.297 296.297 176.623 38.519 100.741

29.630 7.733 119.674

2012 353.032 353.032 210.442 45.894 120.031

35.303 9.214 142.590

2013 376.494 376.494 224.428

48.944 128.008

37.649 9.826 152.066

2014 373.984 373.984 222.932 48.618 127.155

37.398 9.761 151.052

2015 394.178 394.178 234.970 51.243 134.021

39.418 10.288 159.208

hdng he thdng may tuyen, than cap hat (15-80)mm sau khi tach cam dugc ehuyen sang sang rd'a bun S2 ludi indx khe 1mm.

Td' sang S2, than ea'p (15- 80)mm sau khi riia sach bun dupc bang tai B3 ea'p len may tuyen huyen phd manhetit MT1 tl trpng 2,05 kg/dm^ de tuyen loai bd da thai, nude bun riia 6\jgc bom Boi bdm ve be cd dac eao trdn. Tai may tuyen MT1, da thai 6dgc dua qua sang riia da S5 de thu hdi manhetit bam dfnh, sau dd da thai 6dgc bang tai B4 van ehuyen danh ddng, than cue xd 6dgc qua sang rda S4 thu hdi manhetit bam dfnh. Trong trudng hpp cd nhu cau than cue xd 66 tro > 10 % thi than cue xd tii may tuyen MT1 6\jgc ehuyen ve bang tai nhat dam gd B6 sau dd dUa di tieu thu, trudng hpp can than cue xua't khau 66 tro < 10 % thi than sach sau may tuyen MT1 tiep tue 6dgc bang tai B5 dUa ve may tuyen huyen phd manhetit MT2 ti trpng 1,85kg/dm^ de nang cao cha't lupng.

Tai may tuyen MT2, than trung gian va than cue 6ugc qua sang riia S7 thu hdi

manhetit bam dfnh. San pham TG 6dgc bang tai B7 danh ddng va d td van ehuyen tieu thu hoac dua di nghien pha trdn, than sach dupc nhat dam gd tren bang tai B8 rdi 66 ddng trudc khi dUa di tieu thu.

Huyen phd loang tii he thd'ng may tuyen than MT1 dupc xii ly thu hdi manhetit dae va cap trd lai cho day ehuyen bang he thd'ng 2 may tuyen tCr nam cham vTnh cdu MT3 va MT4 nd'i tiep.

Huyen phd loang tii he thd'ng may tuyen than MT2 6dgc xii \)f thu hdi manhetit dae va ea'p trd lai eho day chuyen bang may tuyen tCf nam cham vTnh cdu MT5.

Nude bun tii he thdng tai sinh huyen phu chay ve thdng bom bdn va dupc bOm bdn Bo4 bdm ve be cd dae eao trdn.

Tai be ed dae eao trdn, nude bdn 6ugc cap bd sung cha't keo tu lam tang tde 66 lang dpng bdn than tan thu nude trong tuan hoan de ea'p trd lai eho day chuyen. Nudc bun dac bom ve hd lang de thu hdi bdn, bdn sau khi lang dpng dupc may xdc xdc bdc len bai chiia phoi khd de pha trdn tieu thu. Nude trong tran

tCr be lang 6dgc bdm trd lai eho day ehuyen bang bdm B o l l .

Nude trong bd sung cap eho he thdng tuyen than dupe lay tCf dap nude thdng qua mpt tec nude trung gian.

Manhetit 6dgc cap bd sung vao day chuyen ngay td' dau mdi ca san xua't bang may bdm thdng qua he thd'ng bdm huyen phd loang va may tuyen tCr de cap quang manhetit vao thung chd'a huyen phd tap trung cho tdng he thdng tuyen than.

Cac chi tieu chinh cua day chuyen sang tuyen than cue trong than don xd Bai che bien Udng Thuang - Cdng ty than Udng Bi duac di/kien nhusau:

- Cdng sua't day ehuyen:

400.000 tan/nam, tUOng dUOng 120tan/h

- Tdng sd lao ddng: 36 ngUdi (3 ca san xua't)

- Tieu hao dien nang:

1.587.082 kw/nam (3,97 kw/tan than vao day ehuyen)

- Tieu hao manhetit: 788 ta'n/nam (1,97 kg/tan than vao day ehuyen)

KHCNM SO 7/2010* CN TUY^N CHfi BI£N THAN, KHOANG SAN

Thong tin khoa hoc cong nghe m o

- Tieu hao keo tu: 823 kg/nam

Khi chat lUpng than don xd, ba sang vao day chuyen sang - tuyen cd dp tro khoang 43,6%, du kien can bang cac san pham tuyen dUde tdng hdp trong bang 3.

ill. Ket luan

1. Vdi cong nghe sang, che bien than la sang kho tach cam, than cap hat +50 mm dupe nhSt tay than cue, than don xP ca'p hat -50mm dupc nghien pha trpn hoSe danh ddng, cong nghe nay chi phu hpp vdi nang sua't san lupng tha'p, cac he thdng sang chi cd chdc nang phan loai ma khong the tuyen nang cao chat lupng, cap hat (15-50)mm khong dupc xd' ly triet de se phat sinh ra mpt lupng than don XO tdn dpng ngay cang Idn vi

san lupng khai thac than nguyen khai ngay cang tang. De giai quyet va'n de tan thu va nang cao chat lupng than, nang cao nang luc san xua't than thUdng pham phuc vu. tieu thu trong nudc va xuat khau cua Cong ty than Uong Bf viec dau tU xay dung mpt day chuyen thiet bj tuyen than la rat can thiet va cap bach.

2. Nghien ciiu de xua't xay dung mpt day chuyen thiet bj cong nghe tuyen than cue trong than don xP, tai mat bang +142 khu Uong ThUpng - Uong Bf cd cong sua't 400.000 ta'n/nam bang cong nghe huyen phu tang quay. Cong nghe tuyen huyen phu tang quay cd nhieu Uu diem so vdi cac loai thiet bj tuyen khac la cd the tuyen dupe loai than cd tfnh kha tuyen thay ddi den khd tuyen, tuyen dupc

than cd t^ le da cao, san pham cd the dat dupe chat lupng tuy theo yeu cau cda khach hang, than sach ed chat lUpng eao.

Cong nghe tuyen huyen phu tang quay da dupc ap dung kha rpng rai d cac md than vung Quang Ninh nhU: Mao Khe, Nam Mau, Cpc sau, Deo Nai.

Thiet bj cong nghe ddn gian de van hanh, toan bp trang thiet bj cong nghe co the chd dpng che tao trong nUdc mang lai hieu qua Idn eho nganh than./.

Tai lieu tham khao

1. Du an "Dau tU xay diing day chuyen sang tuyen than cue trong than don xo tai Bai che bien than Uong Thupng - Cong ty TNHH MTV than Uong Bf- TKV" - Vien KHCN Md 2010./.

Hien trang khai tliac A mo tliiec SuoiDac...

(Tiep theo trang 43 ) 3. Mpt sd giai phap nang cao hieu qua khai thac ham 16 a md thiee Suoi Bac

- Can tien hanh tham dd ehi tiet trudc khi dUa khd'i trii lupng vao khai thac de cd the td chd'e khai thac theo he thdng, cd dieu kien ed gidi hda dam bao nang sua't khai thac eao va dieu kien thdng gid thuan Ipi. Can han che tien tdi loai bd kieu khai thac dao Id la'y quang.

- Td ehiie viec la'y mau thudng xuyen va kjp thdi de xae djnh chfnh xae ranh gidi than quang trong ddi khodng hda, giam miie 66 l l n da't da vao quang.

- Nghien edU de ed gidi hoa mpt sd khau trong khai thac de nang eao nang sua't va eai thien dieu kien lao dpng cho cdng nhan khai thac nhu s i i dung may eao kha'u quang, s i i dung may khoan t i i hanh, s i i dung vi chdng thdy luc don thay cho vl chd'ng cui Ipn ...

- Td chd'e khai thac lai eae tru bao ve de tang kha nang thu hdi quang, khai thac triet de

tai nguyen.

- Nghien cdu thay ddi he thd'ng khai thac tCf he thd'ng budng tru, chd'ng giur khoang khdng gian khai thac bang vi chdng gd kieu cui Ipn sang he thdng khai thac de lai tru bao ve tam thdi, sau dd thu hdi quang t i i eae tru bao ve ket hpp chd'ng gUOng khai thac bang vi chdng thdy lUe don de giam tieu hao gd chdng.

- Cd chfnh sach thu hut can bp lam cdng tac ky thuat, edng nghe d khu viic mien ndi de dam bao quan ly td't cdng tae khai thac.

Cdng nghe khai thac ham Id md quang thiee gde Sudi Bac cdn nhieu tdn tai can khac phuc.

Can dau t u eho edng tac tham dd ehi tiet de xae djnh chfnh xae ranh gidi than quang va phan chia thanh eae khd'i khai thac Idn de cd the ed gidi hda cac edng doan khai thac. Can uu tien viec hien dai hda edng nghe khai thac tai eae md quang ham Id ndi chung vd d md Sudi Bac ndi rieng bao gdm eo gidi tCmg phan va tien tdi ddng bp eae khau ddo Id, kha'u quang, van tai... nham nang cao nang sua't lao dpng, giam tdn tha't, giam gia thanh khai thac va dam bao dieu kien lam viec an toan cho ngUdi va thiet bj./.

FiKf KHCNM SO 7/2010* CN T U Y £ N C H £ BifiN THAN, KHOANG SAN