Cov Hlau Muaj Nqis '"Tus Saib Xyuas": Vim Li Cas Dithiophosphates (Cov Neeg Sawv Cev Dub) Siv Dav Dav Hauv Kev Ua Mineral Flotation

Hauv cov nroj tsuag flotation, xanthates tau lees paub dav dav tias yog cov khoom sau muaj zog nrog lub peev xwm sau dav dav. Txawm li cas los xij, rau kev txhim kho kev rov qab los ntawm kub thiab nyiaj lossis cais cov hlau lead ntawm zinc, cov kws tshawb fawb txog metallurgists feem ntau pom zoo dithiophosphates, feem ntau hu ua "cov neeg sawv cev dub" vim lawv cov xim tsaus, feem ntau yog kua nplaum. Txawm hais tias lawv cov tsos tsis zoo nkauj, cov reagents no muab cov txiaj ntsig sib txawv rau kev kho cov hlau muaj nqis thiab cov hlau sulfide nyuaj.

I. Cov Dithiophosphates (Cov Neeg Ua Dub) Yog Dab Tsi?

Dithiophosphates yog ib pawg ntawm cov khoom sau uas muaj feem cuam tshuam nrog xanthates. Txawm hais tias xanthates yog cov khoom sau muaj zog, tsis xaiv cov khoom uas feem ntau ntab hlau sulfides (pyrite), dithiophosphates xaiv tau ntau dua. Lawv kuj ruaj khov dua thiab tsis yooj yim lwj.

II. Cov Txiaj Ntsig Tseem Ceeb

1. Kev Sib Txuas Qis Rau Pyrite: Qhov no yog qhov zoo dua rau kev sib cais cov hlau lead lossis tooj liab sulfides ntawm pyrite. Xanthates feem ntau ntab pyrite, thaum dithiophosphates qhia tias muaj peev xwm sau tsis zoo rau pyrite, ua rau kev sib cais yooj yim dua.
2. Muaj Peev Xwm Sau Kub thiab Nyiaj Tau Zoo: Dithiophosphates tsim cov tshuaj sib txuas ruaj khov nrog cov hlau muaj nqis, ua rau lawv zoo heev rau kev rov qab tau kub, nyiaj, thiab platinum. Ntau lub Hoobkas ua kub ntxiv dithiophosphates (piv txwv li, Aero 238 lossis ammonium dibutyl dithiophosphate) hauv cov khoom siv scavenger lossis cov khoom siv ntxuav kom tau txais cov hlau muaj nqis ntau tshaj plaws.
3. Cov Khoom Ua Npuas: Ntau yam dithiophosphates (piv txwv li, Aero 238) muaj peev xwm ua npuas, txo lossis tshem tawm qhov xav tau ntxiv cov npuas (xws li MIBC lossis roj ntoo thuv). Cov npuas tsim tawm feem ntau yuav tawg thiab tawg yooj yim.

III. Cov Hom Phiaj Feem Ntau

• Aero 238 (Alkyl Dithiophosphate): Ib hom kua uas siv ntau nrog ob qho tib si kev sau thiab kev ua npuas. Haum rau kev sib cais txhuas-zinc thiab kev rov qab tooj-kub. Muaj ntxhiab tsw zoo thiab cov khoom ua rau xeb.
• Ammonium Dibutyl Dithiophosphate: Muaj ua hmoov dawb (txawm hais tias lub npe "tus neeg sawv cev dub"). Tsis xeb, tsis muaj ntxhiab, yaj hauv dej. Haum rau cov hlau uas muaj nyiaj thiab cov hlau tooj liab uas tsis kub hnyiab, tshwj xeeb tshaj yog qhov uas muaj kev txhawj xeeb txog ib puag ncig.
• Diphenyl Dithiophosphate: Tsis tshua muaj, nrog lub peev xwm sau tau zoo. Siv rau cov galena uas tau oxidized lossis cov noob me me uas tsis yooj yim tawg.

IV. Kev Xav Txog Kev Ua Haujlwm

• Kev Phom Sij Txog Kev Xeb: Cov kua dithiophosphates (piv txwv li, Aero 238) yog cov kua qaub thiab xeb. Siv cov khoom siv uas tiv taus kua qaub rau cov kab dosing. Cov neeg ua haujlwm yuav tsum hnav cov PPE tsim nyog.
• Tsis Txhob Noj Tshuaj Ntau Dhau: Kev noj tshuaj ntau dhau tuaj yeem ua rau muaj npuas ntau dhau, ua rau cov qe dej ntws ntau dhau ("carry-over"). Kho cov tshuaj kom zoo, tshwj xeeb tshaj yog thaum siv cov tshuaj npuas.
• Kev Ua Haujlwm qeeb qeeb: Dithiophosphates ua haujlwm qeeb dua li xanthates thiab feem ntau xav tau lub sijhawm txias ntev dua rau kev ua haujlwm zoo tshaj plaws.

V. Xaus Lus

Hauv kev xyaum ua kom cov dej ntws niaj hnub no, dithiophosphates tsis yog cov khoom siv hloov rau xanthates tab sis yog cov tshuaj reagents sib txuas. Ib txoj kev siv ntau yog siv xanthates rau kev rov qab los ntawm cov khoom loj hauv cov dej ntws uas ntxhib dua thiab dithiophosphates rau cov theem huv dua los txhim kho kev xaiv thiab rov qab tau cov hlau muaj nqis.