Thdng tin khoa hpc cdng nghe m o ^NGHIEN CliU ANH HlfSfNG CUA HAM LUOfNG, TINH CHIU R^A CUA SET TOT! VIEC LUA CHON CHE DO RlSk QUANG THIEC SA KHOANG v u n g Q u y Htfp - N g h e f i n Tha paper represents the research results on the effects from the v^ashabilityofthe day on the selection of the washing regime for the placer tin ore in Quy Hop, Nghe An by using the representative samples from Ban Co, Chau Cuong and Ban Quen as well as the effect from the clay content on the washing regime for the samples from Ban Co Basing on the clay content and the washability of the placer tin ore It Is able to select the proper processing links for reducing tin loss and increasing the economic efficiency for the mine enterprises Chi tilt quy hopch vd chl biln cdc mo thiic sa khodng khu vyc Quy Hpp - Ngh$ An dd dupc thdm dd ddnh gid trir lypng gdm 10 md chinh: Ban 06, Ban Podng, Bdn Mdi, Ban Hat, khu Li6n Hpp, NaCa, Ban Hang, Chdu Cydng, cdc sa khodng dpe sdng Con va Bdc Bdn Podng Qdc dilm chung cua cdc md ndy Id trim tich chira qudng gdm nhilu sdt, cdt cudi va dd tdng Cdng nghp d l tuyln qudng thiic sa khodng tai Vipt Nam ndi chung vd khu vyc Quy Hpp ndi riing hipn Id tuyln rua d l loai da thai qua ed vd sdt khdi edt quang trude tilp tyc ndng cao ham lupng bing cdc cdng dopn tuyln tilp theo Do vay, vipc nghiin euu dnh hudng cua ham lupng, tinh chiu n>a cua set quylt anh din cdng ngh| tuyln cung nhu hipu qua kinh t l cua qud trinh thu hIi qudng thiic Kinh nghjlm tren t h i gidi v i danh gia tinh ripa ciia ddt qu|ing Trong cdng tdc nghiin cdu, ddnh gid tinh rua eua dit qupng hien tren t h i gidi cd nhieu y kiln khdc nhau: - Theo Stumpt ddnh gid tinh rua cua d i t qudng qua cdc chf tilu: Chi phi nude n>a eho t i n qudng speh, thdi gian ddnh toi co hpe d l dpt dupe dO saeh cua dd thai vd qua chi phi nang lupng eho ddnh toi eo hpc - Theo Atterberg phan loai tinh rua dua tren chl s l deo eua phin sit d trpng dit quang - Thep Gorgosina cho ring tinh n>a cua d i t qudng phy thupc thdnh phin s i t vd dd eupi d dit qudng eung nhu tinh dec eiia sit, dupe n KS NGUYEN HUY HtlNG KS NGUYEN QUANG HA KS NGUYEN THU H6NG Viin Khoa hoc Cdng nghi Mi-Vlnacomm Bien tip: ThS Hoing Minh Hing dae trung bdi h | s l nia K Hp s l n>a K ciia dit quang dupc xde dinh thee Gprgpsina K= '^^1 Trong dd: + p: Chl s6 deo eua sit; + Wo: 06 I m ; + yi: Hdm lupng d p -0,1 mm; + Y2: Hdm lupng d p + 8mm Vdi K1,5: Khd rua - Thep gido trinh "Lam gidu nguyin li|u khoang kim iopi", d l ddnh gia mue dp khd, d l rda ngudi ta dua vdo tinh deo ciia no Tinh deo cua sit dupc dde trung bdi hdm lupng d p hat mjn vd lOpm chua qupng diu vdo rda, tinh rda qudng dupc chia lopi [2] Theo gido trinh "Thiet ke xudng tuyln khoang vd an toan", quang dupe phan thdnh nhdm thee tinh rua dua vdo vi|e xde dinh muc tilu hap dipn ndng riing d l danh toi: Quang de n>a, tilu hao di|n nang riing nhd hon 0,25kVVli/t; Quang CO tinh riig trung binh, tilu hao diln nang riing tu 0,25 - 0,5kWh/t; Quang khd n>a - tieu Bing Phin loai tinh rira theo chi si dio Chl si dio Loai guing a y-i-ia Qudng khd rii-a >15 KHCNM so 5/2015 • CN TUVEN, C l l t BIEN THAN -KHOANG SAN Thong tin khoa hpc cong nghe md nao dign nang rieng tu 0,5-1 kWh/t [3J Kinh nghidm thuc t l nghien CCPU v l tinh n>a qugng, cac tae gia d i u khang (flnh rang ham lugng vd tinh chat cua s6t co 5nh huang lo-n tai kha nang n>a eua d i t qugng Ti> d6, d l nghidn cuu nang cao hi#u qua tuyln n>a qugng thiee sa khodng vung Quy Hgp, Vi^n Khoa hoe Cong ngh0 Mo - Vinacomin da t$p trung vdo cae v i n d l sau: Quen, ky hieu B l , B2 2.1 Kit qui phin tich danh gii mgt so tinh chat cua set quang thiec Quy Hpp Kit qua phan tich mdu set cua mo duge t h i hien tgi bang Nhan xet: - Theo phugng phap phan logi eua Atterberg vd bang phdn logi theo e i p hgt mjn; + Mlu set tgi mo Ban Co; Mau A l - de rua, - Nghien euu tinh ehju rua cCia set thong qua mau A2 - tinh rua trung binh; chl so deo + Mlu sdt tgi mo Ban Qudn: M i u B1 - kho Bing Phin lo?i tinh n>a theo twang cip h^t rua, mau B2 - tinh rua tmng binh; Him lug'ng hat min,% + Mlu sdt tgi mo Chdu Cu^ng: Mlu C1 - tinh Loaiquang 0,002mm 0,01mm rua tnjng binh, mlu C2 - d l rua; Qudng dd rda 32 >55 lay mdu nhung chT s6 deo thip eo gid trj g i n nhu M6i mo lay m l u co ham lugng set tuang - Set tgi khu Ban Quen la logi set kha deo duang, dua vao thi nghidm xac djnh thai gian ddnh tai ein thiet d l dat duac dp sgeh eua da dinh, kha nang dinh ket tit, ehi s6 deo eua sdt that hay mue dp phan tan hodn toan cac phan cao a t l t ea eae mlu tu nho bd khoi sg bdm dinh vai da thai 2.2 Ket qua nghien cOu tinh ru^ cua set - Nghien cCru dnh huang eua ham lugng set; quang thiec Lay cdc mdu qugng tgi mo thiec sa khodng c6 Oe tai da tien hdnh thf nghidm xdc dinh thai tinh chit set tuang tg nhung c6 ham lugng gian can thilt d l dgt duge dp sgeh eua da thai, set khae Nghign cuu xac djnh cac thong hay muc dp phan tan hodn todn cac phan tu nho so toi uu de ddnh tai m l u dat qugng, be khoi sg bdm dinh v6i dd thai Mdu cua cde Nghien CCPU tinh ehju rira cua set mo dua vdo thi nghipm phai c6 sg tuang ding qugng thiic sa khodng viing Quy Hgp v l ham lugng set de tCr co t h i ddnh gid chinh Hi$n nay, tgi vung Quy Hgp eo nhilu mo thiec xde anh huang chi so deo din tinh ehju rua eua sa khodng dang dugc khai thde De phyc vu set mau dem di thi nghipm Id: eong tdc nghien euu kha tuyln, Vien Khoa hpc - Mdu A2 (mo Ban Co) - ham luang set va chf Cong ngh$ Mo da tien hanh liy mlu set tgi mo; so deo Iln lugt la: 18,10% va 8,80 %; Mo thiec sa khoang Ban Co, Chau Cuang (Do - Mdu C l (mo Chau Cuang) - hdm lugng set Cong ty C6 phin Kim logi mau Nghe TTnh quan vd chi so deo Iln lugt la: 19,51% vd 9,04%; ly) va mo thiic sa khodng Ban Quen (thupe khu - Mdu B2 (mo Ban Quen) - hdm lugng set vd mo thiec sa khoang Lien Hgp Cong ty Co chi s6 deo Iln iugt Id: 18,33% vd 14,53%; phin Khai khodng Mien nui quan ly) Thi nghiem xae dinh thai gian danh tgi duge Mlu sdt khu mo Ban Co ky hi^u A l , A2; mlu tiln hanh tren mdy danh tai dgng tang quay vai set Chau Cuang ky hi^u C1, 02; m l u set Ban thong so ky thu^t nhu sau: Bing Chl tiiu Kyhliu Hdm lypng sdt Chi sd deo Ip Don vi % % Gia tri MSUA1 8,90 6,53 MiuA2 18,10 MiuBI MiuB2 h/liuCI MiuC2 49,60 18,33 19,51 9,12 6,80 18,60 14,53 9,04 7,16 KHCN.M S 5/2015 * CN TU^ EN, CHE BIEN TIIAN -KHOANG SAN Thdng tin khoa hpc c6ng ngh# m o Th6ng tin khoa hoc cdng nghe m o Bing Kit qui thi nghiem xic dinh Ihdi gian dinh tai dit qujng Mau A2 01 B2 T/id? gian dinh toi, phiit Thu hoach cip hat nho -3mm sin pham da danh tai, y (%) Tr 14 cip hat nho (-3mm} da dirgic phin tin, c (%) 66,42 90,93 73,61 100,69* 10 74,75 102,39* 15 76,81 103,84* 61,11 91,46 70,19 101,72* 10 72,01 105,27* 15 73,22 106,11* 10 69,98 92,49 15 64,31 93,94 20 64,74 99,60 (•* kdt qua lan hon 100% qu$ng ti/ nghien thiet bi thi nghi$m) - Duang kinh tang