Thdng tin khoa hoc cong nghS mo MOT SO GIAI PHAP CONG NGHE CO GIOTl HOA HOP LY CHO CAc Xl/dNG TUYEN QUANG SAT GOC QUY MO NHO % For increasing the productivity and decreasing the cost price in the iron[.]
Thdng tin khoa hoc cong nghS m o MOT SO GIAI PHAP CONG NGHE CO GIOTl HOA HOP LY % CHO CAc Xl/dNG TUYEN QUANG SAT GOC QUY MO NHO KS NGUYEN QUANG HA For increasing the productivity and decreasing the cost ThS NGUYEN VAN MINH price in the iron ore separation and processing links at the KS NGUYEN HUY HONG small mines in the North of Vietnam, it is necessary to select Vidn Khoa hpc Cdng nghi Md - Vinacomin the proper synchronous separation equipment and technology, the mechanization technology for each link suitable to each mine Especially, it is necessary to pay attention to the mechanization in the crude ore breaking link and in the ore concentrate drainage link for increasing the labor productivity and minimizing the environmental pollution D^t van di Theo cdc tdi ligu dja chit, ting trd lugng qugng sit d Viet Nam CO khoang hon 1,2 ty t i n tgi hon 300 mo, d i l m quang da dugc phdt hi$n Ngodi mot s l mo nhu Thgeh Kh^, Quy Xa, Na Rya, Tien Bo v.v co trd lugng Idn, cac mo, d i l m qugng s i t Igi d i u co qui mo vua vd nho, tgp trung chu y l u d eac tinh phia bae Vigt Nam De khai thdc, c h i biln, tgn thu tdi nguyen, giam gid thdnh san xuat, eac xudng tuyIn qugng s i t tgi cac mo trdn can phai co cdng ngh$ phiJ hgp va mue dO co* gidi hoa hgp ly- Sau day la k i t qua nghien edu ddnh gia hign trgng cong nghg c h i biln qugng sat vd d l x u l t eg gidi hod hgp ly mpt s l khdu ddy ehuyen tuyIn qugng sat g l c tgi ede mo qui mo nho d edc tinh phia bae Vigt Nam Hign trang cong nghe tuyIn vd mdc dg cc gidi hoa tgi cdc xudng tuyIn quang sat gdc qui mo nho phia bdc Vi^t Nam Qua khao sat thy-c t l , du'a theo cong nghg tuyIn vd mue dp eg gidi hoa eua day ehuyin tuyIn qugng, cde mo quang sat g l e qui m6 nho phia bae Vigt Nam chia logi: hdm lugng Fe trung binh 58% Mo Lang Ddn Cong ty Song Lo khai thdc t u nam 2007 Quang nguydn khai duge chon 1.1 Cac mo khong co day chuyen tuyen: Tai cdc cde mo Ipe thu edng tr^n khai trudng, nho CO tru lugng thip, qui mo qua may dap ham, ed hgt giam khai thae nho, nam d cdc vung xuong dudi 100mm, d l ding sdu xa nhu mo Lang Ddn (Hd dem di tidu thu Nang suit mo Giang), mo Nd Gang (Cao phg thupc vao nhu c l u thj Bang) v.v quang khai nguyen trudng nhung chi den 10.000 khai sau khai thdc dugc chpn tan/nam Tinh qudng thu dugc thu cfing tgi khai trudng CO hdni'lugng Fe >60% Chf thu h i i tinh qudng dgt hdm thu h i i qugng cap hgt tho ddn lugng Fe yeu elu, sau dgp d i n mit mat tdi nguyen xuIng -100mm duge tieu thu cap hgt mjn, thu-c thu dgt tryc tilp So d l c6ng ngh$ c h i khoang 65% - 70% biln qugng sat mo Ldng Ddn 1.2 Cac md co day the hi^n tren hinh chuyen tuyen quang do'n Thanh phin khoang vgt qugng sat mo Lang Ddn chu y l u Id magnetit va limonit co gian, jan thu cong: Tgi edc mo khai thdc, tuyIn quang vdi qui mo c6ng suit vai chgc Qudng nguyen khai i Nhdt tay, sang, chon thO cong Ddt dd thai, qudng mjn Tinh qudng Hinh So dd hiin trang cdng nghi chi biin quing sit md Ling Bin KHCNM S6 9/2013* CN TUVfiN CHE BI^N THAN - KHOANG SAN Thong tin khoa hoc cong nghe mo ngdn t i n tinh qudng/ndm nhu md PLI (Bae Kpn), md Boong Quang (Cao Bdng) vv , qupng nguyen khai Quae dua vdo day chuyin tuyIn vpi edng nghp dpn gian bdn CP gidi thu hdi tinh qudng sat TT le thue thu tinh quang sat khdng eao ehi dat 65% - 70%, quang sat ed tir tinh y l u vd khdng tir bj t i n thit theo quang dudi Md PLI Cdng ty CP Khodng san Na Ri - Hamico dupe c i p phep khai thae nam 2008 tren didn tieh 20ha va di vde hoat ddng vdi cdng suit 50.000 tan tinh qupng/nam Khodng vdt chii y l u Id magnetit, hematit, pirit Hdm lupng Fe treng qudng nguyen khai: 25,51% - 51,67% Tinh quang sau tuyIn dpt 58- 60% Fe, thue thu dat 70%, ham lupng Fe treng qudng dudi 12%-18% So dd edng nghp c h i biln qupng sat mo Pii the hipn tren hinh 1.3 Cic md cd diy chuyen tuyin quing tuvmg doi hiin d^i, mOv CO/ giai hda tuvmg doi cao: Cde md ed tru lupng qupng sat tupng d i i ldn, CP xudng tuyIn qupng tdp trung, ehu y l u Id ede md mdi d i u tu xdy dpng tir nam 2010 trp lpi ddy bae g i m : md Tdng Bd (Hd Giang), Ban Cudn (Bae Kpn), Au Ldu (Yen Bdi) v.v Tpi cdc md ndy, qudng sat sau khai thdc dupe qua cdc khdu ddp, nghien, tuyen thu hoi tinh qupng Dpc bipt trpng khdu tuyIn da ed dp dyng cdng nghe tuyIn tCr cudng dp tir trudng eac vd tuyen trpng lue d l tdn thu tinh qupng sat ed tir tinh y l u vd khdng tir tinh Xudng tuyIn qupng sat Tdng Bd (Hd Giang) dupe xdy dung vd dua vap vdn hdnh san x u l t tir nam 2011, cdng s u i t eiia xudng dupe thilt k l 600.000 t i n quang nguydn khai/ndm Cae l