Nghiên cứu tận thu than sạch trong đất đá có lẫn than thuộc mỏ than khánh hòa

KHOA HOC VA CONG NGHE MO NGHIEN c u t ; TAN THU THAN SACH TRONG OAT DA LAN THAN THUOC MO THAN KHANH HOA TS PHAM H Q U GIANG, TS PHAM VAN LUAN, ThS VU TH| CHINH - Trwang Dai hoc M6-Dja ehit ien tai Md than Khanh Hda, lu-png d i t da l i n than (dp tro eao) du-a bai thai tam cang nhieu (moi nam lu-png d i t da l i n than sinh khoang g i n trieu tan), dd lu-png dat da l i n than du-a vao e h l biin khoang g i n 200.000 t i n Lu-png d i t da l i n than sinh qua trinh khai thac eung nhu- san phim tren lu-di cua sang thupc phan xu-dng sang.Trong d i t da l i n than cd chij-a mpt lu-png ldn than tCp 20+30 % than Lu-png dat da l i n than cang cang nhilu gay ton t h i t tai nguyen khoang san va gay d nhilm moi tru-dng md cung nhu- khu vu-e dan cuquanh md Tai Md than Khanh Hda da SLP dung cac loai thiet bj tuyen la mang d i e KNS va ban dai khi, cac thilt bj tuyen du-a vao san x u i t d i u khdng edng ea ve ky thuat va kinh t l , nen ehl t i n tai khoang tiidi gian ngan D l tan thu than lan d i t da, e i n nghien cu-u cdng nghe t u y i n vdi cac thilt bj tuyen phu hpp vdi loai nguyen lieu nay, cho cd hieu qua kinh t l , ky thuat hpp ly nhit Bang Thanh phin hat mau thi nghiem H Mot so tinh chat miu nghien cu'u Mau nghien cu-u du-pc lay tCp bai thai tam Md than Khanh Hda, cd khii lu-png 1000 kg va kich thu-dc hat tu- 0+125 mm M i u du-pc trdn d i u va gian lu-pc de l i y m i u phan tieh phin dp hat, m i u phan tich chim noi, mau phan tich dp tro va m i u thi nghiem tuyin Mau phan tich ray (phan tich phin dp hat) cho qua cac sang cd kich thu-dc Id lu-di 50; 25 va mm Sau phan tich ray, cac c i p hat du-a gia cdng i l y m i u phan tich dp tro K i t qua phan tich phin dp hat va phan tfch dp tro eae c l p hat cho d Bang Cac c i p hat +6 mm du-a phan tfch chim n i i d cac ty trpng 1,6; 1,7; 1,8; 1,9 va Cac cap ty trpng thude cac c i p hat du-a gia cdng phan tich dp tro, tCp dd du-ng du-pc cac du-dng eong kha tuyin va xac djnh du-pc tinh kha tuyen eua than cac c i p hat JjSp hat, mm fe , 100 -100+50 -50+25 - 25+6 -6 Cpng Thu hoach, % 12,46 14,51 39,8 17,5 15,73 100.00 " D p tro, % 62,14 59,56 61,92 59,93 62,00 61.27 Nhan xet: > Thu hoach cae c i p hat m i u tu-ang ddi deu nhau, nhilu nhit la d p hat -50+25 mm; > Dp tro cae c i p hat cung tu-ang ddi d i u va x l p xl 60 %; > Doi vdi than cac c l p hat +6 mm, d ty trpng Idn han d i u ed dp tro nhd han 70 %, diiu dd ndi len loai d i t da l i n than d cap hat + mm van ehu-a giai phdng du-pe giiJa than va da; > Lu-png than (clp ty trpng nhd han 1,8) rat ft, chilm khoang 20 % Du-a tren k i t qua phan tfch chim noi va soi tren kinh hien vi, eho thay than xam nhiem d i t da r i t mjn, cac cue than xam nhiem da kep cd hinh dang det, vi vay nghien cu-u da t i i n hanh dap c l p hat +3 mm xuing -3 mm Mau than c i p + mm sau dap xuing -3 mm du-a phan tieh ray, qua eae ray cd kieh thu-dc id lu-di 1; 0,5 mm K i t qua phan tich ray cho d Bang Cae c i p hat 1+3 mm va 0,5+1 mm du-a phan tfch chim noi d cac ty trpng 1^,6; 1,7; 1,8;1,9 va 2,0 K i t qua phan tieh chim n i l eae c l p hat eho d Bang Bang Kit qua phan tich ray than cip hat -3 mm sau dap cip hat +3 mm Cap hat, rtnf ^ ^' Thu hoiich, % 1+3 12.94 0.5+1 9.41 -0.5 77.65 Cpng 100.00 Dp tro % 57.6 54.66 62.90 61.44 CONG NGHIEP MO SO 1-2017 KHOA HOC VA CONG NGHE MO Bang Kit qua phan tich chim nii than cip hat sau dap cip hat +3 mm xuong -3 mm Cap ty trpng " ' i ^ r a P - C S p hat -1+0.5 mm A% •^ 30.75 18,54 33,76 3.10 45,09 3.00 50,26 3.37 65,68 14.50 77,91 45.28 jMBHSfcv 100 ''™'" 54 62 ^ W ^ - - -Cap"Trat-3+1 mm A% 21,17 23,47 36,70 2,36 40,03 3,46 45,03 2,36 57.92 10,45 74,70 57,9 -^ 57.59 100,00 v% -1,6 1,6+1,7 1,7+1,8 1,8+1,9 1,9+2,0 +2,0 '^ d r i l l ''W^ Nhan xet: > Than sau dap clp hat +3 mm xuing mm eho mun than cip hat -0,5 tang len tren 77 %; > Lu-png than (phin ed ty trpng nhd han 2) tang len dang ke tiJ- 20- 30 % len 45+55 %; > Dp tro than cap ty trpng >2 eua than clp hat +0,5 mm dat tren 75 % cd the thai bd du-pc Thi nghiem tuyen 2.1 Tuyen tren thiet bj tuyen tang soi Miu than sau dap cip +3 mm xuong -3 mm du-a di phan tieh ray qua ray cd kich thu-de lo lu-di 0,5 mm va mm Than cip hat -1+0,5 mm va -3+1 f"Y% ; "1 1 tl mm du-a thi nghiem tuyin tren may tuyen tang soi Cac dieu kien thi nghiem la cac thdng s l tii u-u du-pc tham khao tCf cac cdng trinh nghien cu-u cua cac tac gia tru-dc day Thi nghiem tuyen dLfdc thUc hien vdi cac che cdng nghe nhu- sau: > Thdng s l c l djnh; khii lu-png miu thi nghiem 30 kg; thdi gian tuyin phut; s l kenh nghieng va chilu dai tim nghieng 90 cm; > Thdng s l thay doi: lu-u lu-png nu-dc lin lu-pt la: 4,4 ; 3,9 ; 3,4 1/s Kit qua thi nghiem tuyin than cip hat 1+3 mm va cip hat 0,5+1 mm cho d Bang va Bang Kit qua tuyin tren thiit bj ting s6i cap hat 1-^3 mm LLPU lu-ang, l/s 3,4 3,9 4,4 San pham Than sach • Da thai Than dau Than sach Da thai Than d i u Than sach '" *"Da thai ' Than d i u Thu hoach, % 24,71 75.29 100,00 35,3 64,7 100,00 36,59 63,41 ""' 100,00 Dp tro, % 27,06 66,31 56,61 31,03 70,89 56,82 32,01 71,01 56,74 Thu-c thu phan c h i p M 41.54 M 58.46 m 100,00 :l| 56.38 '^'^ 43,62 100,00 57,51 11 42,49 100,00 Bang Kit qua tuyin than cip hat ,5+7 mm tren thiit bj tuyin ting sdi Lu-u lu-png, l/s San p h i m Than sach Da thai Than d i u Than sach Da thai Than dau Kk Than sach ar-; Da thai - ; i Than dau , 3,4 3,9 , l-^ IH^ m^ j« 44 w^- Thu hoach,% 59,06 40,94 100,00 69,24 30,76 100,00 73,57 26,43 100,00 Nhan xet; > Than cip hat -3+1 mm sau tuyen tren thilt CONG NOHIEP MO S01-2017 £36 tro, % 43,42 r 66,7 ? ' - ; 52,95 46,02 68,42 52,91 47.72 68.72 53.27 Thu-c thu p h i n chay, % 71,02 28,98 100P0 79,37 20,63 10000 [ 82,31 17,69 'L^ 10000 bi ting sdi cd the liy du-pe than saeh oo dp tro du-di 35 %, thu hoach khoang 40 % vdi thu-c tiu phin chay KHOA HOC VA CfiNG NGHl MO a Xac djnh anh hu'ong cua dp nghien Dac d i l m than chit lu-png thap Md Khanh Hda cd dp xam nhiem rat mjn giO-a than va da, vi vay de tuyin noi du-pc tit, m i u than c i p hat - 0,5 mm can phai nghiin mjn han M i u thi nghiem co khii lu-png 200 g du-a vao may nghien bi, nghiin vdi cac khoang thdi gian 1; 3; 5; phut San pham nghiin du-a phan tich ray u-dt qua ray cd kich thu-dc id lu-di 0,074 mm M i u khdng nghiin va m i u du-pc nghiin vdi cac thdi gian khac du-a vao tuyin n i l Cac d i i u kien thi nghiem tuyen n i l g6m:thulc hon hpp eua Du-e vdi chi phi 1200 g/t; ning dp pha ran bun 200 g/1 K i t qua thf nghiem eho d Bang khoang 60 % va da thai ed dp tro tren 70 %; > Than c l p hat -1+0,5 mm tuyen tren thilt bj tang sdi cd t h i i l y du-pe than sach cd dp tro du-di 45 %, thu hoach than sach khoang 60 % va thu-c thu phin chay than saeh khoang 72 % va da thai cd dp tro tren 66 %; > Chpn d l l u kien t i c dp ddng nu-dc len t i l u-u tuyen than d p hat 1+3 mm la 4,4 l/s va tuyen than d p hat 0,5+1 mm la 3,4 l/s 2.2 Thi nghiem tuyen noi than eip hat -0,5 mm Than c l p hat -0,5 mm du-a di tuyen noi vdi eae c h i dp cdng nghe du-pe nghien eu-u la: dp mjn nghien; ndng dp pha ran bun va chi phi thudc t u y i n noi Bang Kit qua nghien ciru anh huang ciia mjn nghien din kit qua tuyen noi Thdi gian ~ nghiin (phut) Ham lu-png %, ?* 0,074 mm 79,68 95,89 97,95 100,00 100,00 f •• '^ p San pham Thu hoach, % Dp tro, % Than sach Da hai Cdng Than saeh Da thai Cpng Than sach Da thai Cpng Than sach Oa thai Cpng Than sach Da thai Cpng 33,56 66,44 100,00 37,55 62,45 100,00 30,53 69,47 100,00 28,31 71,69 100,00 23,33 76,67 lOOJO 42,24 72,40 62,28 41,27 72,45 60,74 41,03 71,70 62,34 40,61 72,07 63,16 35,58 70,99 62,73 Nhan xet: > Kill tang thdi gian nghiin tCp den phut sau dd du-a tuyin n i l , cho phep l i y du-pc than sach cd dp tro giam tCp 42,24 % xuong edn 35,58 % Dp tro da giam tCp 72,45 % xuing cdn 70,99 %; > Vdi khoang thdi gian nghiin phut cho ty le thu hdi p h i n chay than sach tang tCp 51,39 % len 56,17 % N l u nghiin t i l p d i n phut, thu-e thu p h i n chay than saeli giam xuing cdn 40,33%; > (y e h l dp nghiin vdi thdi gian la phut cho tyle thu hdi phin chay cao nhit ddng thdi dp tro than sach d mu-c cho phep nen chpn dp mjn nghiin toi LPU la phut b Thi nghiem xac djnh nong pha ran biin toi u-u M i u du-a vao thi nghiem tuyin n i l theo cac d i i u kien sau: > Chi phi thule: thule tuyen hon hpp cua Du-c „,.^ Thu-c thu phan chay, % 51.39 " 56.17 47.81 45,64 40,'33 Xi M: 1200 g/1; thdi gian nghiin phut; > Khii lu-ang m i u thi nghiem: 50; 100; 150; 200; 250 g/1 K i t qua thi nghiem eho d Bang Nhan xet: > Khi tang ning dp pha ran bun tCp 50 g/1 len 250 g/1, eho than sach cd dp tro tang d i n tCp 31,47 % len 41,27 % va tro da tang tCp 67,96 % len 72,4 %; > Khi tang ning dp pha ran bun tCp 50 g/1 len 200 g/1, ty le thu h l l phan chay than sach tang tu- 27,34 % len 56,55 % N l u tang t i l p n i n g dp pha ran bun len 250 g/1, thu-c thu phan chay than sach giam xuing edn 44,53 %; > O ehe dp ndng dp pha ran bun 200 g/1, cho ty le thu hoi phin chay eao nhat d i n g thdi dp tro than saeh 40,27 % (d mCpc cho phep), nen chpn ndng dp pha ran bun 200 g/1, lam e h l dp tuyin t i l u-u CONG NGHIEP MO S A - KHOA HOC VA CONG NGHE MO Bang Kit qua nghien ciru anh hwang ndng dd pha rin bim din kit qua tuyin c Thi nghiem xac dinh chi phi thuoc hon hop toi U'U M i u thf nghiem tuyin noi d eae e h l dp nhu- sau; > Khoi lu-png m i u thf nghiem: 200 g/1; nil > Chi phi thulc hdn hpp Du-c l i n lu-pt la; 1100; 1200; 1300; 1400 g/t; > Thdi gian nghiin; phut K i t qua thi nghiem cho d Bang Bang Kit qua nghien cuu anh huang cua chi phi thuoc tuyen ndi -'US C h i dp thulc g/t 1100 1200 1300 1400 San pham Than sach Da thai 73.00 Cpng 100,00 62,83 Than sach 37,55 40,27 "^ 71,78 62.45 72,4 Cpng 100.00 60,34 Than sach 38.01 42.92 Da thai 61.99 73,58 Cpng 100.00 61.93 Than sach 38.75 44.74 Da thai 61,25 73,70 Cpng 100,00 62.47 CONG NGHIEP MO S - z,% 44.58 38.63 Da thai Nhan xet: > Khi tang chi phi thuoc hdn hpp tCp 1100 g/tin len 1400 g/tIn, cho phep i l y than sach cd dp tro tang d i n tCp 38,63 % len 44,74 %, dd tro da tang tu71,78% len 73,7%; > Khi tang chi phi thulc hon hpp tCp 1100 g/tan len 1400 g/tIn, ty le thu h l l phin chay than sach tang tCp 44,58 % len 57,06 % ^ A, % Y,% 27.00 ^ 56.55 i 56.99 57,06 ^ '.' :^ip., i.^:^ > De l i y than sach dat tieu ehuan than cam 6a d n chi phf thuoc tap hpp du-di 1200 g/t, nhu-ngi n l u tan thu t i i da than sach e i n chi phi thude tap hpp tren 1400 g/t d Thi nghiem xac djnh tho-i gian tuyen noi Thi nghiem tuyin n i l thu-c hien d cac e h l dp edng nghe nhu- sau: > M i u thi nghiem; 200 g/1; ^[|]| KHOA HOC VA CONG NGHE MO > Chi phi thulc tuyen; thulc hon hpp cua CHLB OLPC 400 g/t; > Thdi gian gat bpt: 15 s gat lan cho d i n hit > Thdi gian nghiin: phut; bpt Ket qua thf nghiem cho d Bang Bang Kit qua thi nghiem anh huang ciia thai gian gat bot din chit luang than sach San pham 15 7.42 30 Than sach Da 56 tro % Thu hoach % LOy tich Rieng 8.74 8,74 Thdi gian gat bpt Luy tich 30.7 30,37 16,16 35.35 32,84 34,74 45 5.69 21.85 40.12 60 4.33 26,18 45,41 36.50 37,54 38,30 75 2.79 28.97 47,34 90 2.05 31,02 49,09 105 1.72 32.74 52.56 39,05 120 1,53 34,27 55.67 39.79 135 1,69 35,96 57,69 40.63 150 150 1,53 62,51 100 37,49 58.71 41,37 Than dai Nhan xet: > Khi tang thdi gian gat bpt tCp 0+15 s d i n 135+150 s, san phim than saeh ed dp tro tang d i n tLP 30,37 % len 58,71 %; > Khi tuyin gat d i n h i t bpt, dp tro than sach 73,53 AJ^tt!^ 61,47 dat 41,37 % vdi thu hoach 37,49 % va dp tro da dat 73,53 % 2.2 Danh gia ket qua tuyen TLP SO lieu cac Bang 2; 4; va lap du-pc Bang 10 Bang 10 Tine, kit kit qua tuyin riau dit da lin than Mo than Khanh Hda San pham Than sach Da thai Than d i i j ^ 'S, 1,0+3,0 Thu hoach % Rieng Chung 36,59 4.73 Cap hat mm ^ • - ap * Thu-c thu p h i n J Dp tro, % chay, % 0,5+1,9 59.06 5,56 43,42 7,86 0,0 +0,5 Cpng 37,49 29.11 41.37 42,73 58,64 63,41 39.40 8,21 40.54 1,0+3,0 71,01 5,96 0,5+1.9 40,94 3,85 0,0+0,5 Cpng 62,51 48,54 -J ib ^^m^ia Ket luan > D i t da l i n than thudc Md than Khanh Hda la loai than r i t khd tuyen, dae biet r i t khd l i y da thai ed dp tro eao tren 70 % neu khdng dap nhd > M i u dau sau dap xuing -3 mm, d p hat +0,5 du-a vao tuyin thilt bj t i n g sdi cho phep ^_ 60,60 100,00 if 3,21 73.53 " • • * •^ 32,17 66,7 j 8,05 32,01 ^ 72.75 4^.60,06.^ 41.34 J Ife,^ IOO.OOJSM i l y du-pc than sach cd dp tro du-di 40 % (thudc cam 6a) va da thai cd dp tro g i n 70 % > Than e i p hat -0,5 mm du-a vao tuyin noi vdi thulc tuyen cua Cpng hda Lien bang DLPC cho phep l i y than sach cd dp tro du-di 42 % vdi thu hoach g i n 30 %, da thai cd dp tro tren 72 % vdi thu hoach tren 62 % CONG NGHIEP MO S - 2017 KHOA HOC VA C O N G N G H I MO > Nlu SLP dung thilt bj tuyin ting sdi va tuyin CONG NGHE TUYEN QUANG v noi de tan thu than sach dat da lin than Md than Khanh Hda, cho phep liy gin 40 % than (Tiep theo trang 23) sach ed dp tro du-di 41 % (thupc than cam 6b) va da thai co dp tro tren 72 % Nlu giam ehi phi thulc Nhu- vay, dii vdi miu quang barit khu vu-c tap hpp mdt chut ed the liy du-pc than sach Bao Tre tinh Thanh Hda lu-a chpn sa d l cdng thupc loai cam 6a va da thai c6 dp tro tren 70 °/o.CS nghe tuyin noi chpn rieng chi sau dd tuyin noi chpn rieng barit d l thu du-pc san pham quang TAI LIEU THAM KHAO tinh chi va quang tinh barit dat yeu d u chit Du- an khai thac Id thien md Khanh Hda Cty lu-png.• CP TVDT Md va CN Vinaeomin Luan an Tiin sT Pham Van Luan, nam 2011 TAI Lieu THAM KHAO Nghien cu-u ehl tao thilt bj tuyen ting sdi d l Nguyen Bai, Tuyin noi, Nha xuat ban Giao tuyen than hat mjn d p hat 0,1+1 mm vung Quang thdng Van tai 1998 Ninh Nguyin Hoang San, 2008 Pham Hu-u Giang Giao trinh Tuyen trpng lu-c Kit qua nghien cu-u tuyen nil than cam mun md than Ha Tu Tap chf Cdng nghiep Md, s l 2/2011 Tr Tru-dng Dai hpc Md-Dja ChiL Ha Npi 2000 24+26 Kiguyen Thj Mai, Pham HO-u Giang Du-ang Van Huin va nnk Bao cao tham quang barit tai khu vu-c Bao Tre, xa Bai Tranh, Ngu'oi bien tap: Trin Van Trach huyen Nhu- Xuan, tinh Thanh Hda Lien doan Bja Tic khoa: dat da lan than; khd tuyen; da thai cd chit Bac Trung Bp 2011 tro cao; than sach; tuyin tang sdi; tuyin nil Du-ang Van Su- Phan tich, thi nghiem cong Ngay nhan bai: 15-09-2016 nghe tuyin quang barit Giai doan tham d6 thuoc Ngay duyet dang: 28-11-2016 D l an tham dd quang barit tai khu vu-c xa Ngoc Quan, huyen Doan Hung, tinh Phu Thp Vien Cong nghe Xa hilm 2012 Tran Thj Hiln Nghien cu-u cdng nghe tuyen SUMMARY quang dit hiem Bac Nam Xe Vien Khoa hpc va Cdng nghe Md-Luyen kim 2013 Khanh Hda Coal Colliery annually dumps to the mine temporary disposal storage Vij Thj Anh Tuyit Luan van Thac sT "Nghien hundred thousand tonnes of contaminated cu-u cdng nghe tuyin quang barit md Lang Caowaste rocks This type of waste rocks, which Bac Giang bang sa kit hpp ban dai-tuyen nil" has an ash content of more than 60 % due Tru-dng Dai hpc Md-Dia Chit 2014 to the contamination of interparting coals, is considered difficult to be treated Ngu-o-i bien tap: Tran Van Trach Characteristics of the contaminated waste TiJ' khoa: quang barit, tuyin nil chon rieng chi rock shows that clean coals are relatively va barit finely disseminated in rock In order to recover clean coals from such a waste, the Ngay nhan bai: 16-09-2016 authors of the study have crushed the rock Ngay duyet dang: 18-11-2016 down to the sizes of - mm and then have conducted experiments on fluidized bed separation and froth flotation Results of the study show that clean coals of less than 42 SUMMARY % ash (equivalent to fine coals 6B), recovery of over 58 % and rejects of more than 72 % In order to economy mineral resources ash can be obtained from of the size minimize environmental impact, improve fractions 0.5 -1mm and 1-3 mm using economic efficiency for production fluidized bed separators while from the size enterprises, the research has studied the fraction - 0.5 mm which was ground to the 95.98 % of passing size - 0.074 mm using processing technology to receive the barite i froth flotation ore of necessary quality I CONG NGHIEP MO S - ... Kit qua tuyin than cip hat ,5+7 mm tren thiit bj tuyin ting sdi Lu-u lu-png, l/s San p h i m Than sach Da thai Than d i u Than sach Da thai Than dau Kk Than sach ar-; Da thai - ; i Than dau , 3,4... tro tren 70 %; > Than c l p hat -1+0,5 mm tuyen tren thilt bj tang sdi cd t h i i l y du-pe than sach cd dp tro du-di 45 %, thu hoach than sach khoang 60 % va thu- c thu phin chay than saeh khoang... NGHE TUYEN QUANG v noi de tan thu than sach dat da lin than Md than Khanh Hda, cho phep liy gin 40 % than (Tiep theo trang 23) sach ed dp tro du-di 41 % (thupc than cam 6b) va da thai co dp tro