Thong tin khoa hoc cdnq nqhe m o
KET QUA TRIEN KHAI AP DUNG THU NGHIEM HOA CHAT DE GIA GUIDING KHOI DA TRONG QUA T R I N H DAO LO VA KHAI THAC TAI CONG TY THAN KHE CHAM
In the year of 2012, Khe Cham Coal Company with Institute of Mining Science and Technology (IMSAT) had carried out the theme of "Study on the pilot application of the chemicals for preventing face failure and roof convergence In the dnvlng and coal mining process"
assigned by Vietnam National Coal- Mineral Industries Hold- ing Corjioration Limited (Vinacomin). In this paper, the authors refer to the initial results from the pilot application of the chemical Erkadol-K/Erkadur for reinforcing rock masses dunng the driving and coal mining process at Khe Cham Coal Company recently
TS.TRtJ'0'NGBU'CDU' ThS. BINH VAN CU'O'NG Vldn Khoa hoc Cdng nghd Md - Vinacomin
KS. NGUY6N HUY NAM KS. LUONG THANH CHUNG Cdng ty TNHH MTV than Khe Chim - Vinacomin
Trdn t h i gidi, vipc sij' dgng hda chit d l gia cudng khdi dd nham han c h l va ngdn ngiia hien tupng tgt ndc, Id guong trong qud trinh dao Id va khai thac da vd dang dupe dp dgng rpng rai. Hda chat dupe si>
dyng khd da dang ve chOng loai tDy thupc vao tinh chit, ddc dilm d l i tupng vd mgc tidg s i i dgng. Tgy nhidn, chi^ng cd dac dilm Chung Id d i thi cdng, cd kha ndng chong chdy hoac khd bat li>a, thdi gian phan li-ng gdy ddng Cling nhanh, kha ndng chju luc ciJa khil dd sau gia e l ed chit lupng t i t
Tai Cdng ty Than Khe Chdm, trong qua trinh khai thdc eae Id chp vupt qua thupng thdng gid vd mdt s i phay pha, phin than nguydn khIi va d I t da tai vi tri giap thupng vd phay khdng bin vOng nen thudng xay ra su c6 Id guong, tgt ndc gay khd khan cho cdng tdc khIu chlng.
Qud trinh ddc Id xay dung cp ban thupc khu vyc san ga tai md than Khe Chdm III do Cdng ty qudn 1^ cflng thudng xay ra sy e l Id guong, tgt ndc do dudng Id cd t i l t dlpn Idn, ddo qga viing phay pha, d I t da
m I m y l u . Cac sy co lien quan d i n id guong tyt ndc xay ra trong ddo Id va khai thdc tai Cdng ty dd gay ra nhu'ng anh hudng tidu cue den sdn xult nhu giam cac chi tidu san lupng khai thac, t i c d$ dao Id, nang suit lao ddng va mu'c dd an toan, ddi hdi phai nghidn ci>u dua ra giai phdp khic phgc phii hpp.
Xuit phat tir cac khd khdn trong qua trinh ddd Id vd khai thao, kinh nghidm su' dyng hda chit trong nude vd nude ngodi, nam 2012 Tap dpan Cdng nghiep Than - Khpdng san Vidt Nam giao cho Cdng ty than Khe Chdm phoi hpp vdi Vien Khoa hpe Cdng nghp Md (Vldn KHCN Md) thue hien d l tdi
"Nghien eCru ap dgng thu nghidm hda chit ngan ngira r6ng ndc. Id guong trong khai thdc vd dao Id" tai Quylt djnh s i ig60/QD-VINACOMIN, ngdy 12/9/2012. Sau khi tham khao dac tinh mpt s i Ipai hda chit, Vipn KHCN Md da de xult dp dgng thu nghidm h i n hpp hda chit Erkadol-K/Eri<adur de xi>
ly vd ngan ngira hidn tupng tyt ndc. Id guong trong qud trinh
dao Id vd khai thac. DSy Id loai hda c h i t dang dupe su dgng rpng rai trong cdc md than ham Id cd khi vd byi n l tai Ba Lan vdi mpt sd uu diem n i l bat nhu thdi gian phan d'ng va ddng ket nhanh, gia thdnh phii hpp, each su dyng don gian ndn cd t h i nhanh ehdng khdi phyc cdng tac khIu than, dap Id, nang cao md'C dd an todn, khdi lupng cdng vipc cIn thue hidn It, chi phi van tai thIp. Dac tinh [j hda cua hon hpp hda chit Erkadol- K/Eri<adur dupe gidi thieu trong bang 1.
De bpm dp hdn hpp hod chit vao viing cd nguy co Id gupng tyt ndc tpi guong ddo Id vd khai thac, Vi#n KHCN Md d l xgIt sd' dyng t l hpp bom JWPD 1:1. Ddy la loai bom kilu piston dupe san xult tai Ba Lan, dam bao ydu c l u sO dgng trong mdi trudng cd nggy hiem v l no khi vd byi than. Bom dupe e l p ddng luc bang thgy luc, dieu khiin bang tay ed t h i t u dpng dilu tilt ty Ip cac thdnh p h i n hoa chit, dp suit dp hSn hpp hod chat t^i d i g ra Idn, len tdi 15 MPa, nen d l ddng d l y h i n hpp hoa c h i t lan tod l i p
KHCNM S 6 6/2013' CNKT HAjVl L 6
Ky niem 88 nam Ngay Bao chi Cach mang Viet Nam
Bing 1. D$c tinh If hda cOa hdn hgp hda chit Erkadol-K/Erkadur TT
1 2 3 4
5 6 7
D^c tinh
The trang Nhi#t ao ildng dSc SO dlnh Thdi gian b i t d i u phan irng Thdi gian c u l l cung ci^a phan irng Op tao bpt. n d Thdi hgn bao quan
Ban vi
d p c MPa giay giay
-
ndm
Tri so Erkadol The long mau v a n g - mat ong
-30 200 30 + 60 6 0 + 1 4 0 1 + 3
1
Erkadur The long mau ndu
-24 216
-
1 Bing 2. Bic tinh ky thu$t cue Id hop bam JWPD 1:1 TT
1 2 3 4 5 6 7 3 9
Thdng so ky thuit Kich t h u d c (D X R X C) Khoi lupng cua may COng s u i t Idm vide T } 10 pha dau iJOng Iyc NhiOt do lam viOc cua td hpp bom Md hiSu iJOng c o
COng suat cap d i u thijy lijc Ap s u i t Op nhya ra cua to hpp bam D u d n g kinh ong d i n
Dan vi
mm kg m=/h
%
ao
m"/h MPa mm
Trj so
800 X 320 X 340 43 1,5 1 + 5 Emulkop
5 + 4 6 HNSR^aO
1,2 16 20
)- Thung chiia hda chit: 2 - Vdi hilt hda chit; 3-Biund bit li khoan bam hda chit: 4 - Miy bom: 5 - 6ng bam hda chit:
6 -1/0/ bam hda chit vdo Id khoan
Hinh 1. Kit nil glua miy bam vi do thung chCra Eri<adol-K/Eri<adur
d l y cae khe nCrt trong khIi than da thudc pham vi c I n xu' 1]/
thdng qua cac l§ khoan. \Ju d i l m cua to hpp bom ndy la d l thao tac, lap dat di^n gian, trpng lupng nhd (khoang 43kg) ndn ed the d l ddng van chuyin trong h i m Id. So d l ket n i l cua te hpp bom vdi cdc thiing chua hod chat va tinh phg kipn dupe md ta tren hinh 1, dac tin"h ky thuat cua bom dupe gidi thipu trong bang 2.
Trdn co so lo$i hda chit va ddng bp thiet bj bom dp dupe lua chpn, Vidn KHCN Md da xdy dung, thiet ke giai phap sir dyng hda chit d l ngdn ngii-a Id guong, tgt ndc trong qud trinh ddo Id va khai thdc t^i Cdng ty than Khe Cham. Npi dgng cua giai phap bao g i m cdc cdng vipc chinh nhu sau: (1) Khoan cac l6 khoan vdo ndc Id va guong Id d nhO'ng vj tri cd nguy co tgt ndc.
Id guong; (2) Sir dgng ding bp thilt bj chgyen dgng bom dp hdn hpp hda chit dien d l y vde cac khe nirt trong khoi than da trdn ndc va guong id, Idm eii'ng hda guong va ndc Id. Hp chilu khcan, bom ep hda chat trcng ddp Id va khai thac theo thiet k l dupe the hipn hinh 2.
D l trien khai giai phap vdo thyc te san xult, Vipn KHCN Md p h l i hpp vol Cdng ty than Khe Chdm t l chire dae tao, hudng d i n cdng nghd khoan, bom hda c h i t cho cac cdn bd, cdng nhan ciJa Cdng ty Cdng tac hudng dan ly thuylt dien ra vao ngay 31/3/2013 va tap trung vao cdc npi dgng: hudng d i n SU' dgng va bao qgan hda chat Erkadol-K/Erkadur; hudng ddn sCr dgng, bao dudng, sua ehu-a t l hpp bpm JWPD 1:1 vd cae linh phy ki$n di kem; hd
a. Hd chiiu khoan trong Id cha b. Hg chiiu khoan trong id chuin bl Hinh 2. Hd chiiu khoan, bam dp hda chit trong Id chg vi Id chuin bi theo thiit ki ban diu
a. Sadd diidmg idvitdsd-dunghoichit di gia cu^ng khdi di
Hinh 3. Sa di dudng Id vi tri thi cdng vdhd chiiu khoan cic IS chieu, quy trinh khoan, bom dp Can cCr vao hipn trang diln hda chit trong Id chp vd Id b i l n tyt ndc, Id' guong tai cdc chyin bj; cac bipn phap ky guong dao Id vd khai thac cOa thuat an toan trong qud trinh Cdng ty than Khe Cham, cac thyc hidn giai phap. Tilp dd, bdn thing nhlt lya chpn triln vdo ngiy 01/4/2013, t l chu'c khai cdng tac khoan bom hda hydng d i n cdng nhan thyc chit trudc tidn tai Id thupng hanh l i p dat t l hpp bom, cdch
thu'c lidn k i t cac dudng I n g hut, d l y tO' bom tdi cdc thOng chCra hda c h i t va vdi phun, cdch djnh vj nut bjt n d tfd vol phun hda chit trong l3 khoan tai mat blng cua phdn xudng CP khi md Khe Cham I.
thdng gid - tryc vat lieu muc 300/-260 khu vyc san ga md Khe Cham III. Ld thupng dupe ddo tiet dipn hinh vdm, chong blng vl thep SVP-27, dien tich ddo 20m2, cllpn tich su' dung 17 m^ tiln dp chlng 0,5 m/vi, ndc va hdng Id dupe chen kin bang
Hd chiiu khoan cdc id khoan phuc vu bom hoi chit khoan phuc vu bam hda chit
t i m chen bd tdng. Thdi dilm trudc khi triln khai bpm hda chat, guong Id dang tam dirng di tiln dd do phin dIt dd ndc va guong Id qga m I m y l u , hipn tupng tyt Id xay ra vdi t i c dd nhanh vd manh, chilu cao tgt Id phat triln Idn, t i l m I n nggy CO gdy mit an tean cho ngudi lao dpng. Tren cp sd hipn trang tgt Id tai guong Id, cdc ben thing nhlt ap dgng hp chilg khoan nhu sau: cdc l3 khoan dupe khpan tai ph^m vi bidn ndc Id, s i lypng |5 khcan id 03
KHCNM s d 6/2013' CNKT HAM L 6
K'^ niem 88 nam Nqav Bao chi Cach mang Viet Nam
Id, trpng dd l5 khoan s i 1 dupe khpan tai vj tri chinh giu'a ndc Id, hai Id so 2 vd s i 3 dupe khoan d hai ben hdng cdn lai, cdc Id khoan each d l y nhag 1,5m, chieg dai mdi Id khoan la 2,5m (theo thilt ke ban d i g la 1,5+2,0m), cac Id khoan t?o vdi mat phang ngang mpt gde tir 30+350. So d l dudng Id vj tri thi cdng va ehi tilt hd chilu khoan cae Id khoan phyc vy bom hda chit dupe md ta tren hinh 3.
Cdng tdc bom hda chit sau dd duoc tien hanh ian lupt tir Id khoan so 1 d i n lo khoan s i 3.
Trong mdi Id khoan, d l thyc hien bom hda chat, su* dyng vdi phun k i t hpp vdi 01 niit bjt no dat tai vj tri each midng Id khoan khoang 1,0m, nut bjt nay khi bom se ty dpng truong no de bit kin mieng Ip khoan va tao thanh viing dp suit cao phia trong Id khoan, tir dd d l y hdn hpp hda chat len day vao cac khe nirt trong khIi da c I n gia cudng. Khi k i t thue bom, nut bjt se dupe de lai trong lo khoan, cdn vdi phun dupe thg
hdi de tai sir dgng cho cac l3 khoan khac. Chi t i l t bo tri vdi phgn va nut bjt trong Id khoan dupe trinh bdy hinh 4.
K i t qua bpm hda chat tai guong Id thypng thdng gid - taie vat lipu mire -300/-260 nhu sau: io khoan s i 1 bom trong 20 phut, tidu thg 120 kg hda chit; Id khoan s i 2 bom trong 20 phut, tidg thy 120 kg hda chit; lo khoan s i 3 bom trong 5 phOt, tidu thy 40 kg hda chit.
Ket q u i nay phan dnh dung hipn trang gupng Id, khi eae Id khoan s i 1 vd so 2 do d I t da guong m I m y l u , dong nghTa vdi lupng khe nut Idn, chl khoan trong vdng 2 + 3 phut Id k i t thue mpt Id khpan, trong khi dd, Id khoan so 3, do d I t dd guong Id on djnh hon (lupng khe nu't it hon) phai khoan trong vdng g i n 8 phut thi mdi k i t thiie, ndn tieu thy lupng hda chat nhd hon rIt nhieu, chl la 40kg so vol 120 kg cho mdi Id sd 2 vd so 3.
Sau khi k i t thue cdng tdc bom ep hoa chat trcng ca 1
ngdy 04/4/2013, tu' ca 1 ngay 05/4/2013, Cdng ty than Khe Cham t i l p tyc t l chO'c thi cdng dao Id thupng. K i t qga qgan sdt b l mat guong vd ndc Id sau khi cdng nhan khao guong cho thIy, hda c h i t lan tda khd d i u (hinh thdnh cac phan Idp xen
•ce trong khIi da, chilu day tir 0,2 + 1,0cm) trong phsm vi ndc vd khoang 1,0m pharti vi gupng Id tinh tir bgng xd. Qud trinh cdn ndc de di tiln dp khdng cdn hipn tupng tyt Id nhanh vd manh nhy trudc khi bom hda chat, viec Idn xa cho cdc vi chong tren cac d i m blng thep ray dien ra thu|in Ipi, dam bao an toan. Trong 03 ngay 05, 06 va 09/4/2013 (hai ngdy 07 va 08/4 phan xudng tam dCrng thi cdng de thue hien khoan tham dd nude trudc guong) da thi cdng dupe 2,5m Id. Quan sat thue te hien trudng cho thIy, gupng Id da vupt qua dupe viing xung y l u , di vdo viing d I t da on djnh hon, va cd t h i t i l p tyc thi cdng binh thudng md khdng c I n phai gia
a. Kit ciu Id khoan bam hoi chit b Kit ciu nOt bit vdi vdi phun hoi chit I iR"*"-*^'t" ' :at
^1
c /vt/r o/r truoc khi truong no d. Nut bit sau khi truong nd Hinh 4. Chl Hit kit ciu li khoan bam hoi chit vide linh kidn dl kdm
Thdng tin khoa hoc c6ng ngh§ mo
a. Bin dd vi tri thi cdng
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b. Hldn trang vi tri ngS tu trudc khi bom hda chit vi chdng xdn Hinh 5. Bin dd vi hldn trang vi tri thi cdng bom dp hda chit
tai khu Cdng trudng 3
Hinh 6. So di bd tri cdc Id khoan bam hod chit tai vi tri ngd tu cudng khIi dd nhu da thue
hipn trong 2,5m Id trudc dd.
Cae bdn thing nhlt tam dirng cdng tac khoan, bom dp hda chit tai dudng id nay
TCr ngdy 20/5/2013, Vipn KHCN Md tilp tyc phli hpp vdi COng ty than Khe Chdm thye hidn bom dp hda chit gia cudng pham vi dIt da y l g phIa ndc va hdng Id d l tiln hdnh chlng xen
ngd t u glii'a cdc dudng Id: dpc via vdn tai 14.5-3, thupng van chuyen vat lieu 14-2 md'c -90/+35 vd Id n i l van chuyin vat lipu mire -90 tir via 14.2 sang via 14.5 khu Cdng trudng 3 - md Khe Chdm I. Dat da ndc vd hdng Id vj tri ngd t u trudc khi bom rIt m I m y l u , rdi rao, chl eIn thdo t i m chdn Id ed t h i tyt id ngay. Cdc dudng Id bj ndn
lun, dipn tich t i l t didn giam nhilu so vol ban d i u . So d l duong Id vj tri thi cdng, hien trang khu vyc nga t u trudc khi bom dp hda chit vd chlng xdn dupe t h i hipn tien hinh 5.
Tren cp sd hien trang khu vyc nga t u vd mgc dich cua cdng ta'o chlng xdn, cac ben thdng nhlt t i l n hanh khoan, bom dp hda chit trdn Id dpc via van tai 14.5-3 theo hudng tir ngoai v l pham vi ng§ tu. Cdng tac bom hda chit dupe thue hidn trong hai ngdy tir 20 + 21/5/2013, tong s6 IS khoan dupe thyc hipn la 09 lo, trong dd s i lypng lo khoan dupe bom dp thdnh cdng Id 07 lo (02 Id bj hdng do d I t dd pham vi ndc Id qud mem y l u ndn mIt lo), chilu dai moi |3 khoan Id 3,0m, gde nghidng so vdi mat phing ngang tir 40° - 45°. Khoi lupng hda chat va thdi gian chl phi cho timg Id khoan nhu sau:
- cac lo khoan duftyc bpm trong ca 1 ngay 20/5/2013: s6 lupng l5 khoan la 03 |5, trong dd, |5 s6 1 bom trong thdi gian 2 phOt, tidu thg 24kg hda chit;
Ic s6 2 bom trong thdi gian 4 phiit, tieu thy 30 kg hda chat; IS s6 3 bpm trong thdi gian 11 phdt, tidu thy 100kg hda chit;
- cae l5 khoan dupe bom trong ca 1 ngdy 21/5/2013: s i lupng IS khoan la 04 l3, trong dd, i l s6 4 bom trong thdi gian 8 phut, tidu thy 90 kg hda chit;
Id so 5 bom trong thdi gian 5 phijt, tidg thg 84 kg hda chit; l5 khoan s i 6 bpm trong thdi gian 5 phOt, tidu thy 60 kg hda chit;
lo khoan s i 7 bpm trong 6 phdt, tidu thy 90 kg hda chit. Chi tilt vj tri cdc l5 khoan dupe xdc (flnh tren hinh 6.
Sau khi k i t thdc cdng tac
KHCNM s6 6/2013' CNKT HAM L 6
Ky niem 88 nam Nqav Bao chi Cach manq Viet Nam
Vvi:;.
n
•
^^-z
a Guong lo thuong TG-TVL muc -300/-260 sau khi dwoc bam hoi chit
'i noc Id khu vuc nga tw sau khi dwoc bom hoa chit
c. Moi bu mau uai da tai girang sau kni auoc bom hod chit Hinh 7. Kit qua sau khi thue hldn bom hod chit tai cdc vi tri thi cdng bpm hda chat tai khu vuc neu
tren, Cdng ty than Khe Chdm tier hanh chdng xen pham vi nga tu theo bien phap do Cong ty lap. Quan sat thue t l qua
Khe Cham III, hda chat lan tda kha deu va hinh thanh cac phan Idp xen ke trong khdi da pham vi phia tren ndc xa can chdng xen, chat lupng khdi dd sau khi trinh can cuoc phin ndc, hdng bpm hda chit kha tot, khdng de md rdng doan Id can chdng cdn hien tuong tut Id nhanh va xen cho thay tuong t u nhu manh nhu trupc khi bpm. Cdng guong id thuong thdng gid - tac thi cdng chdng xen nga t u
"•'J'= ^a' lipu mire -300/-260 md didn ra thuan Ipi va an todn.
Hinh 7 la mpt so hinh anh the hipn tinh trang gupng Id thupng va vj tri nga t u sau khi dupe khoan, bom hda chat, t i n g hpp so lupng lo khoan vd khdi lupng hda chat tieu hao trong thdi gian dp dgng thir nghiem dupe thong ke trong bang 3.
So vdi giai phap gia cudng khdi da yeu bang phuong phap bom ep vij'a be tdng injoe ddy thdi gian ddng cirng khi sir dgng giai phap gia cudng bang hda chit ngan hon nen ed t h i nhanh ehdng khdi phuc cdng tac ddo Id. Do hdn hpp hda chit d the long nen dd ddng lan tda va dien day cac khe nirt trong khoi da tren dien rdng trudc khi phan irng gay dong cirng. Khi k i t thue phan irng, hdn hpp hda chat cd kha nang truong np the tich nen khdi da sau gia cd ed c h i t lupng tot hon, ddng thdi, yeu cau ve s6 lupng Id khoan trong mot dot gia cudng cung nhd hpn, chi la 03 Id so vol 09 id khi ap dung giai phdp bom ep vira be tdng.
Ngoai ra, ddng bd thilt bj phuc vu bom ep hda chat cd trpng lupng nhd, chi khoang 43kg (ddng bp thilt bj phue vy bpm ep vij'a be tdng bao gom may bom va tram trdn cd khoi lupng khoang 1 tin) nen viec van chuyin trong h i m Id thuan IPI, d i d a n g , Chl tiet so sanh mpt so chi tieu cua hai giai phap gia cudng khdi da dupe trinh bay trong bang 4.
Qua thdi gian theo ddi, danh gia ket qua khoan, bpm ep hda chit de gia cupng khdi da phuc vu dao vd chdng xen cac dudng Id trong pham vi xung y l u , dat da mem bp, d l tyt Id tai hai vj tri la thupng thdng gid
Thong tin khoa hoc cong nghe m o
Bing 3. Ting hgp kit qui thue hien cdng tic bom hda chit di gia cuang khdi di tai Cong ty than Khe Chim
TT
1
2
Vj tri thi cdng
Ld thupng thOng giO - true vOt liOu mi>c -300/-260 mo Khe Chdm III
Nga t u glua cac d u d n g \6 doc via v3n tai 14 5-3, thupng van chuyen vat liOu 14-2 mire -90/+35 vS Id noi vOn chuyen vOt lieu mij'c -90 ti> via 14 2 sang via 14 5 khu Cong trudng 3 - mo Khe Ch^m !
Tong cong
Sd hidu lo khoan
1 2 3 1 2 3 4 5 6 7 8 9 12
Chiiu dai lo khoan (m) 2,6 2.5 2.5 3,0 3,0 3.0 3,0 3,0 3.0 3,0 3.0 3,0 34,5
•li t
2 4 8 8 8 2,5
3 3 4 4 3 3 52,5
Thdi gian bom (phut)
20 20 6 2 4 11 8 5 5 6 0 0 86
Luvrtg hoa chat tieu hao
cho mdt lo khoan (kg)
120 120 40 24 30 100 90 84 60 90 0 0 758 Bing 4 Tdng hgp so sinh mdt s6 chl tieu chinh cua cic giii phip gia cd khdi di trong qui t thuvng -300/-260 md Khe Chim III
TT
1
2
Ten giai phap
Gia cu'6'ng khoi da bang h6a ch§t Erkadol-K/Erkadur Gia cu'6'ng khoi da bang bam 6p vua be tang
Solo khoan cho mdt
dpi gia cwd^ng (IS)
3
9
Chieu dai khoan (m)
Mdt Id
2,5
6,0 Tong
7,5
54 Tong
thai gian khoan (phut)
14
135 Tong
thai gian bam (phut)
45
36
Th&i gian khdi phuc cdng tie dao Id sau khi bom (gia)
6 + 1 6
168 Trpng Iuvng to hop thiet bl bam (kg)
43
1000 Vat lieu tieu hao (m')
0,23
0,42 Bo twang ndcua vdtlldu sau bom
(lin)
3
1
- tryc vat li^u mLcc -300/-260 mo Khe Cham III va nga tu"
giOa 16 dgc via van tai 14 5-3, 16 thLFong vgn chuyen vgt lieu 14-2 mifc -90/+35 va 16 n6i v§n chuyen vat li$u mi>c -90 tif vfa 14.2 sang via 14 5 khu Cong tru'o'ng 3 - mo Khe Cham I - Cong ty than Khe Cham co the khang djnh rang, gjaj phap da du-cc thin khai thanh cong va CO nhieu u-u di^m vu-pl trpi ho'n so vo'i giai phap gia cu'O'ng
blng bcm ep vCna be tong da du'p'c ap dung tru'O'c do tai mo.
Khoi da sau khi gia cu'O'ng bing hoa chat co chSt lu'p'ng tot, khong con hi?n tircng tut 16' nhu" tru'O'c khi bcm, qua trinh dao 16 va chong xen sau do d i i n ra thuan Ip'i, dam bao an toan, t6c do dao va chong xen cac du'6'ng 16 da du'pc nang len. Thanh cong ti> vi^c si>
dgng hoa chat tgi Cong ty than Khe Cham se la tien de quan
trpng de nhan rpng ap dung giai phap ra cac khu vu'c co dieu kien tu'cng t y tai Cong ty than Khe Cham noi rieng, tai cac cong ty than h i m 16 khac cua Tap doan Cong nghiep Than - Khoang san Vi^t Nam noi chung. Cung tren cc so' thanh cong nay, tho'i gian toi day Vi0n KHCN Mo se tien hanh nghien CLTU che tao hoa chat trong nu'O'C de chu dpng ngu6n cung va giam gia thanh san ph^m./.
KHCNM S6 6/2013* CNKT HAM L 6
