Nghiên cứu và đề xuất công nghệ sàng tuyển nhằm nâng cao chất lượng cho mỏ khánh hòa

Thong tin khoa hpc cong nghe m d / NGHIEN CUU VA DE XUAT CONG NGHE SANG TUYEN NHAM NANG CAP CHAT LUUNG THAN CHO MO KHANH HOA In general, the existing coal screening and processing technology at Khanh Hoa has coped with many difficulties in the coal consumption, causing the efficiency in the business and production at the mine For ensuring the commercial coal quality and increasing the coal production to meet the demands from the coal consumers, the study on the proper screening and processing technology for processing the total over screen mixed coal at Khanh Hoa coal mine is an essential work I Md> ddu Hi§n tren dja ban tmh Thai Nguyen cd don vj san xuit, kinh doanh than la mo than Phin M i , mo than Kh^nh Hda va mo than Nui Hing Trong do, mo than Khanh Hoa Cong ty than Khanh Hda quan ly cd nhipm vu san xuit cac chung logi than thyong pham cam 4, cam vdi san lyp'ng khoang 195.000 t i n de cung d p cho cac nha may xi mang va than cam vdi san lyp'ng khoang 373.000 tan d l cung cap cho Nha m^y nhipt dipn Cao Nggn Do dilu kipn dja chat, san lyp'ng than nguyen khai cam 4, cam 5, cam cua mo Khanh Hda ng^y cang giam, d l tri san ly^ng cung d p cho cac hp tieu thg, mo than Khanh Hda da phai khai thac xuong sau va c h l biln tan thu them nguon than chit lyp'ng thip hay d i t da Iln than Tuy nhien, dieu kipn khai thac xuing sau cdn ggp rit nhilu khd khan than cua mo cd tinh ty chay, nguy 00 buc nydc cao va dja ting khai thac khong on djnh San luong dat da l i n than dyp'c khai thac tgn thu cdn rit hgn c h l thgn cam thu h i i dyp'c cd chit lyp'ng thap khdng dap Cpng dyp'c yeu c l u tieu thy tryc tiep ma phai trpn vdi than cam t i t d l tieu thy, than don xd phat sinh qua trinh s^ng than cd chit lyong thip khong t h i nghiin pha trdn ma phai dong chd xy ly Nhin chung, cdng nghp sang, c h l biln than hipn tgi mo Khanh Hda cdn rit hgn c h l gay khd khan cho cdng tac tidu thy, giam hipu qua san xuit kinh doanh cua md Ngoai ra, nam 2015, Nha m^y nhipt dipn An Khanh tren dja ban tinh Thdi Nguyen se di v^o hogt dOng va sy dyng than md Khanh Hda D l on djnh chit ThS NGUYEN HO'U N H A N ThS NGUVeN NGOC T A N Viin Khoa hQC Cdng nghi Md-Vinacomin Biin tap: ThS Hoing Minh HOng lyp'ng nguon than, nang cao san lug'ng than thyong phim dap yng nhu c l u than thyong pham cho cac hp tieu thu thi vipc nghien CLPU cdng nghp sang-tuyIn phu hep, nham xy ly toan bp than don xd ba sang va ty nguon d i t da lan than cho mo than Khdnh Hda la rit c l n thilt II Npi dung nghien CIPU Danh gii hi$n trang cdng ngh$ sang, che biin than nguyen khai mo Khanh Hoa San lyg'ng than nguyen khai toan md Khdnh Hda dgt ti> 600.000 t i n tdi 700.000 tIn/ndm, va lam phat sinh khoang 900.000 t i n d i t da Iln than hang nam Hipn nay, toan bg san lyp'ng than nguyen khai sau khai thac dyp'c dya ve sang, c h l biln tgi mat bang san cdng nghipp tren cum sang khd, Than nguyen khai cam 3, cam 4, cam sau dya qua sang song tTnh khe hd 150mm d l logi da qua co dyp'c dya vao cum sang so hai mgt lydi 25x25mm & 70x70mm d l phan logi san phim: C i p +70mm dyp'c van chuyen dong chd XCF ly, than don xd (25 - 70)mm dyp'c nghiin thdnh than cdm -25mm cung vdi than cam kho (0 25)mm sau sang phan logi dyp'c tieu thy tryc tilp hogc dya di pha trgn tieu thu Than nguyen khai cam sau dya qua sang song tmh khe hd 150 mm de logi da qua co dyp'c dya vao cym sang so va so mpt mgt lydi 25x25mm d l phan logi thdnh san pham: C i p +25mm dyycyc vgn chuyen ding chd' xy ly va than cam khd (0 - 25) mm sau sdng dyp'c tieu thy tryc tilp hope dya di pha trpn tieu thy Mpt phin d i t da Iln than phat sinh qud trinh khai thac than nguyen khai dyp'c dya sang khd trdn cym sang kho s6 mpt mgt lydi 25x25 mm thu dyp'c san KMCNM S6 1/2015 ' CN TL\ tN CHE NIEN THAN - KHOANG SAN Thong tin khoa hpc cong nghe mo x l bd sdng vd mau d i t dd Idn than mo Khdnh Hoa dype ting hpp bang Nhdn xdt: -Thanedmelphpt-15mm tip nguln than don xd bd sang co tro Id culi than cam 6a co thi tidu thu tryc tiep - Than cdm d p hpt -15mm tCi* d i t da lan than la CO dp tro rit eao (55,84%), c l n phai tuyln d l nang cao chit lypng - Than d p hat (15 - 80)mm tir than don x6 bd sang e l dp tro trdn 55% (55,31%), tCf dit dd 2- Nghien ciru dac tinh than don xd ba sing Iln than c6 tro tren 63% (63,14%) neu nghiin vi dit di lin than pha trpn vol than edm se Idm giam dang ke chit 1- Ket qua phin tich thinh phan dg hgt lypng than cam nen khong dam bao chat lypng c l xde dinh sy phdn b l khli lypng vd chit d p eho cac hp tieu thp, c l n phai tuyln d l ndng lypng giu'a cdc co hat khdc than don cao chit lypng xo bd sang vd dat dd I l n than, cae m l u than 2- Kef Qua phan tich thinh phin chim nil dypc gia cing phdn tich thdnh phin dp hat Ket Nhdm phyc vu lya chpn phyong phap tuyln qua phdn tieh thdnh phin dp hat m l u than don Bing Kit qui phin tich thinh phin dd hat miuthan don xd bi sing phim than cdm vd dd thai d l thai Qua khao sdt, tong eong suit ede cum sang kha mo Khanh Hoa dpt 2600 tIn/ngay, tyong dypng 780.000 tIn/ndm, dam bao ndng lye sdng todn bO san lypng than nguyen khai mn Tuy vay, voi ccng nghe sdng nhy trdn, phim d p chit lypng than thyong phim cua mo Khanh Hoa la khong dypc I n djnh dp thilu than edm chat lypng tot d l pha trpn, vi vdy, c l n phai nghien cyu cong nghp tuyln than phu hpp d l sdn xuit than t i t phuc vu eho pha trpn Dit di lan than Than don xd ba sing TT Cip hat (mm) + 80 50-80 35-60 25-35 15-25 0-15 C«ng 15-80 Thu hogch % DdtroAk(%) Thu ho^ch % DdtroAk(%) 25,57 19,30 20,67 13,60 8,66 12,29 100,00 62,13 63,70 68,67 55,06 54,32 49,96 41,05 65,70 66,31 20,42 11,91 7,61 7,66 11,96 40,66 100,00 39,02 70,21 66,6 63,25 61,51 60,69 55,84 61,62 63,14 Bing 2: Thinh phin tf tmng cip hat 15-80 mm miu than don xd bi sing md Khinh Hda Thu hogch y(%} Capty trgng (g/cnf) 2.1 CCng BOn Ting Phan noi Dd tro (%) Thu hogch Ddtro Trong cap Trong TNK i:r(%) A'(%) 12,73 7,96 16,6 12,73 16,60 6,83 4,27 19,86 19,66 17,02 3,01 1,88 25,21 22,67 18,11 3.97 2,48 32,68 26,54 20,28 4,35 2,72 44,06 30,89 23,62 10,02 6,27 31,25 64,76 40,91 59,09 74,1 66,57 36,96 100,00 100,00 62,55 56,57 2,45 1,67 42,51 64,12 66,22 KHCNM S 1/2015 * CN TUYEN CHE MEN THAN - KHOANG SAN Phan chim Thu hogch ZrC/o) Ddtro 100,00 87,27 80,44 77,43 73,46 69,11 69,09 56,57 62,56 66,19 67,78 69,68 71,29 74,10 A'r/.) THphantf trgng lin cin 9,84 6,98 8,32 14,37 Thong tin khoa hpc cong nghe mo vd lyu trinh eong nghe, ede mdu than dype tiln hdnh gia cong phdn tich chim noi d l xde dinh tinh kha tuyln cua cdc m l u than nghien cyu Kit qua phdn tich chim n i l d p hat (15 - 80)mm ty m l u than don xo bd sang dypc ting hpp bang 2, kit qua phdn tieh chim n l i cdp hpt (15 80) mm vd (0,5 - 15)mm tit mau dat dd Idn than dype tong hpp bang vd bang Nhan xdt: - Than don xo cap hat (15 - 80)mm cua mdu than don xo bd sdng vd m l u d i t da Idn than eo tinh kha tuyen thupe loai trung binh tuyln, ec the sy dung phyong phdp tuyen trpng lye de thu hii than each dam bao hdu ehuin d p eho cae hO tieu thy - Than cam t(r nguln d i t da lan than eo tinh kha tuyen Id trung binh tuyen, co t h i sir dyng piiyong phdp tuydn lye moi tnrpng ly tam d l tuyen ndng cao chat lypng than cam - Da trp dd thai sau tuyen ec t h i dpt id'n hon 74% 3- Kit qua tuyen cac mau than trdn thiet bi tuyin quy md phdng thi nghiem 1- Kit qua tuyen than don xd tren thiet bj tuyin huyen phii tu' sinh quy md phdng thi nghiem Do than don xo vac tuyln co ty ip da rit cao nen dung phyong phdp tuyln huyen phij ty sinh gid thdnh tuyln se thdp nhat so vo'i cdc phyong phap khac nen da chpn phyong phdp tuyen Bing Thinh phin tf trgng cip hgt 15-80 mm mii iu dit di Iln than md Khdnh Hda Capty trgng (g/cmi 2.1 67,87 25,46 74,36 100,00 63,94 67,87 74,36 Cpng 100,00 37,61 63,94 Bun 3,87 1,51 45,54 39,02 63,23 T i n g cpng Sdng Thinh phin tf cip hgt 0,5- 15mm miu dit di lin than md Khinh Hda Captf trgng (g/cm') 2.1 Cpng Bun T i n g cpngl Thu hoach j'(%) Phin ndi Trong cap Trong TNK Dg tro r/') 16,32 4,68 4,17 4,93 3,66 3,26 63,10 12,85 3,53 4,08 3,10 3,74 1,77 49,70 100,00 3,87 78,76 7,04 85,80 15,11 29,27 40,28 49,62 58,13 62,65 76,36 69,64 42,27 58,21 Thu hogch UrCA) 16,32 20,90 26,07 30,00 33,66 36,91 100,00 Phan chim Ddtro A'(%) Thu hoach £r(%) Ddtro A'(%) 15,11 18,22 21,89 26,44 29,89 32,77 59,64 100,00 83,69 79,11 74,94 70,01 66,36 63,10 69,64 68,32 70,58 72,27 73,86 74,73 75,36 KHC,^,M S6 1/2015 • C \ TUI EN CHE MEN THAN - KHOANG SAN THphan tf trgng lin cin 8,75 9,10 8,59 6,91 Thong tin khoa hpc cong nghe mo Bing Tdng hcrp kit qui tuyin mau than don xdba sang vd miu than don xd ttr ngudn dit di lin tha md Khinh Hda trdn thiit hi HPTS quy md phdng thi nghiem Sdthi nghidm Tnjng binh Than don xd ba sing Chitieu Than sach e^ thai Than vao tuyen Than sach B^ thai Than vao tuyln Than sach Bi\hi\ Than vao tuyln Than speh e^ thai Than vio tuyln Thu hoach r/.) 33,83 61,17 100 38,62 61,38 too 39,03 60,97 100 38,83 61,17 100,00 huyIn phu ty sinh d l tuyln than don xo mo Khdnh Hoa Bang kit qua thi nghiem tuyen dypc ting hpp bang Nhdn xet: DCing cdng nghp tuyen HPTS co t h i thu hii dype than speh chit lypng than cam 5, dd thai c6 dd tro ion hon 72% dam bao tieu chuan thai 2- Kit qui tuyen than cam tijr nguon dit da lan than tren thiet bi tuyin xoay lie huyin phii ti/ sinh quy md phdng thi nghiem Mlu than edm d p hpt (0,5-15)mm ti> nguln ddt dd Iln than dype tuyln tren thilt bi xoay lie huyIn phii ty sinh dypng kinh 250mm vo'i g l c cln 120 dO Cdn cy vdo kinh nghipm tuyen than trdn xoay lie, cdc dilu kipn thi nghidm dypc thyc hidn nhy sau: - Hdm lypng ran trang d p lidu: 13% - Ap suit d p lidu: 1at - Lyu lypng d p lipu: 30 m'/h - Ty trpng huyIn phij (dn chinh than vdo tuyln tpora): 1,1 g/cm= Xody lie huyen phu ty sinh dyong kinh 250mm vol Ing hyong dong trdn dy&ng kinh 85 mm vd goc c8n 120 dp dypc t h i hidn trdn hinh Vi tri ong hyd'ng ding trdn xody lie Dat di lan than Dd tro (%) Thu hogch 24,87 72,16 53,80 24,68 72,12 53,80 25,06 72,19 53,80 24,87 72,16 53,80 24,12 76,88 100 23,10 76,90 100,00 23,62 76,48 100 23,58 76,42 100,00 r/.) Dp tro r/«) 27,61 72,46 61,61 26,98 72,02 61,61 27,13 72,22 61,61 27,21 72,23 61,61 Hinh Xoiy Idc huyin phO tu sinh dudng kinh 250 mm vi gdc cdn 120 dd huyIn phu ty sinh co anh hypng tryc tilp tdi thu hopch cung nhy dp trp san phim than speh va da thai K i t qua tuyen m l u than cam mp Khanh Hpa thay d l i chieu cap Ing hydng ding tran dypc ting hpp bang Nhdn xet: Bang xody lie huyIn phii ty sinh co t h i tuyln dypc than cdm tip d i t da lin than mo Khdnh Hoa dpt tidu chuin phii hpp cung d p cho cdc nhd mdy xi mang, nhipt dipn vCing Thdi Nguyen Than sach d | tro cdm 6, dd thai co tro Idn hon KHCNM s o 1/2015 * CN Tll'^ EN CHE NIEN THAN - KHOANG SAN Thong tin khoa hoc cong nghe mo Bing 6; Anh hudng c^iiu cao dng /lutSng ddng trin su- dung gdc cdn 120 dd di tuyin miu than cim Khinh Hda Chieu cao ong hiTdng ddng trin Lb=50mm Sin pham Than sach 37,47 31,19 62,53 71,01 100 66,09 Ttian sach 42,60 34,38 Qd thdi 67,40 71,83 100 56,09 Ttian vdo t u y l n Lb=100mm Than sach 47,21 37,66 fld thdi 62,79 72,67 100 56,09 Than saeh 50,23 39,39 Bi thai 49,72 72,97 100 66,09 Ttian vdo t u y l n Lb=125mm (%) f>i thai Than vao tuyen U=75mm Thu Ddtro hogch (%) Than vao t u y l n 72%, CO t h i d l thai 4- Be xuit phuang in cdng nghg sing-tuyen chi biin than tgi md Khinh Hda a- L(/a chgn phuung in cdng nghe Tif k i t qua nghien CCKU tuyen than don xo bdng huyIn phii ty sinh vd tuyen than cam bang xody lie huyIn phD ty sinh, tac gia d l xuit dp dyng phyong an eong nghp phli hpp giya tuyen huyIn phii ty sinh va xoay lie huyIn phii ty sinh: - Tuyln huyen phu ty sinh: De tuyln than don xo - Tuyln xoay lie huyIn phii t y sinh; D l tuyln than edm chat lypng thip 6- Md ti luv trinh cong nghg So d l nguyen ly hd thing sdng-tuyin ndng cao chit lypng than bang huyIn phii t y sinh tang quay k i t hpp vdi xody loe huyIn phii ty sinh cua mo than Khanh H6a dypc t i l l hipn tren hinh IV- Kit lupn - Vdi he thong sdng, c h l bien than hipn nay, mo than Khanh Hoa khong dii than chit lypng t i t d l d p cho ede nhd may nhidt dien vd xi mdng viing Thdi Nguyen Vipe triln khai nghidn ciru cong nghp tuyln than mo Khdnh Hoa mang Tkax iaixSbiting I iag Billilixdux tmebnllSmiSTetm a-iiil Xkilltj ;»"i« n nunru SaA£ I Xml£eEPn