Nghiên cứu thiết kế, chế tạo một số thiết bị tự động đo lường điều khiển dây chuyền công nghệ tuyển

w

Thdng tin khoa hye edng nghd md

NGHIEN tSXOi IHIET KE, CHE TAO NldT SO THI ^ Bl TUDONG DO LUONG

DIEU KHIEN DAY CHUYEN CONG NGHE TUYEN THAN VA KHOANG SAN

In the coal and mineral separation plants, for

having the output products witii the stable quality,

the role of the automatic monitoring, measuring

and controlling systems have been always paid

much attention to. In the paper, the authors refer

to the research results on the design and

manufacture of some automatic measurement and

control equipment in the coal and mineral

separation line

KS. Lt VAN HAI

KS. PHAM VAN HI^U

KS. L^ VAN PHUC

Vl^n Khoa hge Cdng ngh^ Md - Vinacomin

Day chuyen cdng nghd

tuyen bao gom cde cum may

cdng nghidp ed yeu cau dieu

khien ty ddng d mCre do cao,

vdi nhilu ehung loai thid't bj

CO. didn khde nhau lam vide

lien tue tuan hoan. Cdc nguon

nguydn lieu dau vdo eua cac

Nha may tuyen (NMT) nhu

than nguyen khai. qudng

khodng san... thudng cd sy

bid'n ddng Idn ve do tro. do

am, ca'p hat. hdm lUdng tap

chd't... Do dd. de ed duoc cac

san pham dau ra sau tuyen

dat chd't luong on djnh thi vai

trd eiia he thd'ng gidm sdt, do

lifdng - dieu khien tu ddng

(DKTO) trong NMT duoc ddt

len hang dau. Nd'u thie'u he

thong DKTO se khdng the

khai thde het kha ndng eCia

thiet bj cdng nghd cQng nhy

lam giam hidu qua san xuat vd

tha't thodt tdi nguyen.

O'Vidt Nam hidn nay cd hai

nha mdy tuyen than cd quy

md tmng binh la Cdng ty

Tuyen than CCfa Ong, Cdng ty

Tuyen than Hdn Gai va mot so'

day chuyen sang tuyen cdng

suat nhd thudc cac ddn vj khai

thae than ham Id vd Id thien.

Trong dd, chi cd NMT Hdn Gai

va CCfa 6ng la cd he thdng

dieu khien tap trung kd't hyp

vdi cde thid't bj do ludng tif xa.

Mot so ddy chuyen tuyen mini

cQng da ed he thd'ng dieu

khien tap trung, dieu khien lien

ddng nhung khdng cd thid't bj

do ludng.

Vdi mot nhd mdy tuyen thi

cdng doan tuyen dUde vi nhu

trdi tim cCia todn nhd may. Cd

nhieu hinh thifc tuyen khde

nhau nhu tuyen nude (huyen

phu), tuyen bang xody ldc

cyclone vd tuyen khf. Trong

dd, d Viet Nam, ehCi yd'u thyc

hidn bang phUdng. phdp tuyen

huyen phu. Sy dn djnh ve ti

trong cua huyen phu trong

mdy tuyen quyd't dinh quan

trong dd'n chd't lUdng san

pham dau ra sau tuyen. Gia trj

tl trong ndy thudng xuyen bj

thay doi trong qua trinh tuyen,

song vide dieu ehinh gid trj ti

trong theo ydu cau phan Idn

lai dUde thye hidn thCi edng.

NghTa la ngUdi van hdnh

thudng xuydn phai la'y mot

luyng the tfch huyen phu ed

djnh trong be chifa huyen phu

roi ddt len ban can, nd'u tha'y

ndng hdn gid trj ddt thi l)o

sung them nude vao be huyen

phu, ngUdc lai nd'u nhe hdn thi

phai hda them manhetit vdo

be. Vide lam thQ edng nay Id

khdng lien tue ndn khdng gidm

sat dUde thUdng xuydn gia trj ti

trong huyen phii. din dd'n sai

Idch tl trong, thay doi trong

pham vi rdng, lam eho san

pham dau ra sau tuyen ed

chat lUdng chua eao. Mot he

thd'ng do ludng, dieu khien ty

ddng gid trj huyen phu eCia

nha mdy tuyen se giai quyd't

dUde bdi todn ndu trdn.

Xua't phdt tif tinh hinh thUe

te trong ITnh vyc tuyen than vd

khodng san nhu da ndu d trdn,

Phdng Nghidn cifu Didn Ty

ddng hda - Vidn Khoa hoe

Cdng nghd Md - Vinacomin

(Vidn KHCN Mo) da tim hieu.

nghien eCfu. thid't ke va che tao

thdnh edng mot sd' thid't bj ty

ddng do ludng dieu khien

trong day chuyen edng nghd

tuyen than vd khodng san.

Cde thid't bj ndy da dUde dp

dung vdo ede ddy chuyen

tuyen do chfnh Vidn KHCN Mo

thi edng xdy dyng vd bude dau

da mang lai nhufng hidu qua

rd't tfch eye.

1. Cd set lya chon giai

phdp thie't ke.

Trdn ed sd nghidn cifu

nhumg tie'n bo kT thuat trong

dieu khien edng nghd nhd

may tuyen eCia ede nude trdn

the gidi. phdn tfch kha ndng

ifng dung trong dieu kidn thye

KHCNM SO 1/2012* CO DifeN - TITDONG HOA