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43 nHm >icn nnuH nui; VA CONG NGHE MO LOVEN KIM ^ ^ KET QUA NGHIEN CUtJ H O A N THIEN QOY TRINH CONG NGHE TOYEN VA SUT DUNG HOP LY QUANG CROMIT CO DINH THANH HOA TS HOANG VAN KHANH, KS NGUYEN C A N H[.]
_^^ 43 nHm >icn nnuH nui; VA CONG NGHE MO-LOVEN KIM KET QUA NGHIEN CUtJ H O A N THIEN QOY TRINH CONG NGHE TOYEN VA SUT DUNG HOP LY QUANG CROMIT CO DINH-THANH HOA TS HOANG VAN KHANH, KS NGUYEN C A N H NHA, KS PHAM BA KIEM, KS PHAM XUAN KJNH, KS LE H N G S Q N - Vi^n Khoa hgc va Cong nghe Md-Luyen kim TS THAN VAN LIEN - Vien Cong nghe Xa hiem M d crdmit Cd Dinh,Thanh Hoa cd tru lup'ng quang Id crompicotit, cde khodng vat di kem cd gin 20 tridu tin CraOs; khoang 3,0 trieu tin montmorillonit, antigont, thgeh anh, gatit, limonit, niken va 300 nghin tin cdban, ngodi felspat, chlorit, amphibol Thdnh phan hda hpc cd tjentdnit Trong nhung ndm vua qua vide khai thde mdu nghien cuu duac ndu Bang Kit qua mang tinh nhd le, manh mun, mdi dung d viee chi nghien cuu thdnh phan dd hat thd hien d Bang biln thd, chua tdn thu duac eac nguydn td cd ich di Kit qua nghidn cuu phdn vat chit miu kem nhu niken, coban Cho den san phdm chinh cho thiy: cua md la tinh qudng cromit vdi ham lup'ng 44,0-46,0 •:• Trong mau nghien cuu, khodng vdt ed ieh % Cr203 chu ydu d l xuat khiu Ngoai mdt sd nha ehu yiu Id crompicotit d dang hat tu tap trung mdy da san xult fero crom caebon cao, cdn loai fero chu ydu (tdi 82,38 %) elp hat -2+0,020 mm; crom caebon tnjng binh vd thip ehua dug'c nghidn •:• Hdm luang niken trung binh mau khoang Cliu va san xult Set bentonit la san phdm phy td bun 0,52 % va phan bd kha ddu tlt ea eae elp hat, thai dang dup'c tan thu nhung chi biln rit thu Rieng d edp hat ~5 + 0,5 mm, ham luang niken cd cdng, nen chdt luang san phdm khdng cao, vay gidu han vd dao dpng khoang 0,6-0,8 %, pham VI su dung cung han hep, •:• Quang cd dp hat nhd, muc thu hoach mdu dp Dd su dyng hap ly va hieu qua ngudn tdi nguydn hat -0,045 mm ehilm gan 70 %, nen rit dd mit khoang san nay, vide nghidn cuu hoan thidn cdng mat quang xu ly tuyen nghd tuyln hp'p ly quang crdmit kit hap tdn thu cdc Ket qua nghien cuu tdi nguyen ed ieh di kem la rit cdn thilt va la not dung cua D I tai edp Nha nudc" "Nghien euu hodn thidn 2.1 Kit qua nghien cu'u cong nghe tuyen thu quy trinh cdng nghd tuyln va su dung hap ly quang hoi quang tinh cromit crdmit vd eac khoang san di kem md crdmit Cd Da thu nghiem tuydn lyc quang dd hat Dinh, Thanh Hda" Bg Khoa hgc va Cdng nghe +0,074 mm trdn cac thilt bj may Idng va vit dung giao cho Vien KH&CN M6-Luyen kim chu tri Kdt qua kit hgp vdi bdn dai cat va ban ddi bun d l tan thu nghidn cuu cua Ch tdi Id can eu khoa hpc tham khao vd nang cao chit lup'ng quang tinh thd Qugng d p lap cac du an khai thac chi biln tdng hp'p qudng hgt mm dup'c nghien cdu xu ly tuydn tren cac thilt crdmit C6 Dmh, Thanh Hda bi bang tai quy dao va mdy tuyln ly tam MGS Qugng tmh thd dug'c nghien cuu nang cao chit I M I U nghien cu'u lup'ng bdng phuang phap tuydn tu Tu kiln Mdu qudng thi nghiem dup'c lly tgi than qugng I nghi sa dd cdng nghd tuyln hap ly dp dung vao mo crdmit Cd Djnh Kdt qua nghien cuu thdnh san xudt tai md crdmit Cd Djnh (H 1) Chi tidu edng nghd du kiln dup'c trinh bay d Bang phdn vat chdt mdu cho thdy khoang cd ich Bang Thanh phan hda hoc tnau nghien citu Thanh ph^n H^m iLfong, % CrjOj 3,45 FezOj 28,91 SiOz 39,78 Ni 0,518 Co 0,045 P