Ob Tsev Neeg Mineral Supply Yuav luag Tag Nrho Tungsten
Tungsten tsis pom zoo li cov hlau dawb hauv qhov xwm txheej. Economic deposits yog tsim los ntawm ob tsev neeg ntxhia: wolframite series thiab scheelite. Ua ke lawv suav nrog yuav luag tag nrho lub ntiaj teb kev tsim khoom, thiab kev xaiv ntawm lawv ua txhua yam hauv qab - txoj kev tsuas, cov txiaj ntsig tau txais txiaj ntsig, qib siab zoo thiab cov khoom tsis huv uas ncav cuag lub smelter.
Pawg Wolframite: Ferberite thiab Hubnerite
Wolframite tsis yog ib qho ntxhia xwb tab sis yog cov khoom sib txuas ntxiv - kev daws teeb meem ntawm cov hlau tungstate thiab manganese tungstate. Cov hlau- cov neeg nplua nuj kawg yog ferberite, FeWO4; cov manganese- cov tswv cuab nplua nuj kawg yog hubnerite, MnWO4. Cov khoom siv ntuj tsim yog sib xyaw ntawm ob, thiab Fe: Mn piv ib txwm qhia nrog kev tshuaj xyuas vim tias nws cuam tshuam rau ob qho tib si xim thiab cov lus teb sib nqus.
Xim:tsaus grey, brownish dub, reddish xim av thiab hlau xim av, darkening li hlau cov ntsiab lus nce; lub streak yog xim av mus rau dub.
Luster thiab form:submetallic rau metallic; feem ntau tabular los yog prismatic crystals nrog ib tug bladed cwj pwm, feem ntau nyob rau hauv loj aggregates.
Hardness thiab ntom:kwv yees li 4 mus rau 4.5 ntawm Mohs nplai, nrog rau lub ntiajteb txawj nqus nce los ntawm kwv yees li 7.1 rau manganese- nplua nuj kawg rau 7.5 li hlau hloov manganese.
Magnetism:tsis muaj zog hlau nplaum, ua ntau teb raws li cov ntsiab lus hlau nce - cov cuab yeej uas ua rau sib nqus sib nqus siv tau tom qab lub ntiajteb txawj nqus concentration.
Chemistry:theoretical WO3 cov ntsiab lus yog kwv yees li 76%, ze rau lub qab nthab rau txhua yam tungsten ore.
Cov khoom siv kwv yees li 30% ntawm lub ntiaj teb cov peev txheej tungsten, nrog scheelite tuav qhov nyiaj tshuav.
Scheelite: Fluorescent Calcium Tungstate
Scheelite yog calcium tungstate, CaWO4, thiab nws yog chemically yooj yim dua cov wolframite series vim nws nqa tsis muaj hlau los yog manganese los sib txawv cov lattice. Nws crystallizes nyob rau hauv lub tetragonal system, feem ntau yog granular los yog loj cov ntaub ntawv thiab tej zaum kuj zoo li - tsim dipyramidal crystals.
Xim:dawb, grey, daj ntseg daj, daj ntseg liab, daj ntseg xim av, daj ntseg liab los yog ntsuab, nyob ntawm cov kab impurities ntau dua li ntawm cov ntsiab lus tungsten ib leeg.
Luster:vitreous rau greasy; translucent nyob rau hauv nyias fragments.
Hardness thiab ntom:kwv yees li 4.5 mus rau 5 ntawm Mohs nplai, nrog rau lub ntiajteb txawj nqus ze 5.9 rau 6.1 - noticeably lighter dua lub wolframite series.
Fluorescence:cov cuab yeej kuaj mob. Nyob rau hauv luv luv -wave ultraviolet lub teeb scheelite emits ntxoov los ntawm daj ntseg xiav mus rau daj, uas yog siv ob leeg nyob rau hauv tes- lens tshawb thiab nyob rau hauv ore sorting.
Chemistry:theoretical WO3 cov ntsiab lus yog kwv yees li 80.5%, siab dua cov wolframite series.
Sab -los ntawm - Sab Sib piv
| Khoom | Wolframite series | Scheelite |
|---|---|---|
| Formula | (Fe, Mn)WO4 - ferberite rau hubnerite | CAWO 4 |
| Crystal system | Monoclinic | Tetragonal |
| Hom ntom ntom | 7.1-7.5 g / cm³ | 5.9-6.1 g / cm³ |
| Mohs hardness | 4–4.5 | 4.5–5 |
| Theoretical WO3 | Txog 76% | Txog 80.5% |
| Sib nqus teb | Tsis muaj zog hlau nplaum, muaj zog nrog hlau | Tsis yog-magnetic |
| Kev txheeb xyuas thaj chaw | Xim, streak, ntom, hlau nplaum | Blue rau daj fluorescence nyob rau hauv UV |
| Qhia tawm cov peev txheej | Txog 30% | Cov feem ntau seem |
Los ntawm Ore mus rau Concentrate: Yuav Ua Li Cas Ob Tus Cwj Pwm Sib Txawv
Qhov sib txawv ntawm lub cev ntawm ob tsev neeg txiav txim siab seb txhua tus ua tiav li cas.
Wolframiteyog upgraded mas los ntawm lub ntiajteb txawj nqus sib cais - jigs, co ntxhuav thiab spirals - vim nws siab ceev muab ib tug muaj zog sib piv nrog gangue. Tus cwj pwm tsis muaj zog ntawm cov hlau- cov kabmob ces tso cai sib nqus sib cais los ntawm lwm cov ntxhia hnyav, thiab Fe:Mn piv tuaj yeem hloov kho los ntawm kev sib xyaw ua ke los ntawm ntau qhov chaw.
Scheeliteyog sib dua thiab feem ntau finely disseminated, yog li lub ntiajteb txawj nqus concentration ib leeg yog tsis tshua muaj txaus. Flotation nrog fatty-acid type collectors yog txoj hauv kev, qee zaum ua ke nrog lub ntiajteb txawj nqus ua ntej-concentration, thiab cov fluorescence ntawm cov ntxhia yog siv nyob rau hauv sorting thiab tswj cov nroj tsuag.
Qib thiab impurities:ob qho tib si yog pauv ntawm WO3 cov ntsiab lus, nrog rau qib classic mloog zoo ntawm 65% WO3 tseem tau hais dav dav. Scheelite concentrates yuav nqa phosphorus thiab molybdenum ua lub txim txhaum, thaum wolframite concentrates feem ntau raug soj ntsuam ntawm cov hlau, manganese thiab sulfur cov ntsiab lus.
Hauv qab:ob txoj kev sib txuas ntawm ammonium paratungstate, los ntawm qhov uas tungsten oxide, tungsten hmoov thiab thaum kawg ferro-tungsten lossis tungsten carbide raug tsim.
Cov lus nug nquag
Q: Ob hom tungsten ore yog dab tsi?
Wolframite, cov hlau -manganese tungstate series, thiab scheelite, calcium tungstate. Nruab nrab ntawm lawv lawv muab qhov tseem ceeb tag nrho ntawm lub ntiaj teb tungsten.
Q: Koj qhia li cas wolframite los ntawm scheelite hauv thaj teb?
Scheelite fluoresces daj ntseg xiav rau daj nyob rau hauv luv luv- wave ultraviolet lub teeb thiab tsis yog- sib nqus nrog qhov ceev ze 6 g / cm³; Wolframite series tsis muaj fluoresce, tsis muaj zog hlau nplaum thiab yog denser ntawm kwv yees li 7.1 txog 7.5 g / cm³.
Q: Cov ore twg muaj ntau dua tungsten?
Scheelite, nrog rau qhov theoretical WO3 cov ntsiab lus ze 80.5%, tawm tsam kwv yees li 76% rau cov tswv cuab kawg wolframite. Cov qhabnias siv tau qis dua rau ob qho tib si vim yog gangue thiab impurities.
Q: Qhov txawv ntawm ferberite thiab hubnerite yog dab tsi?
Ob leeg muaj nyob rau ntawm wolframite series. Ferberite yog hlau- nplua nuj kawg cov tswv cuab thiab hubnerite cov manganese- nplua nuj ib qho; ntuj wolframite yog sib tov, thiab hlau - cov khoom nplua nuj yog xim dub thiab sib nqus ntau dua.
Q: Vim li cas scheelite ua tiav los ntawm flotation thaum wolframite tsis yog?
Scheelite yog sib dua thiab feem ntau zoo tshaj tawm, uas ua rau tsis muaj zog qhov sib txawv ntawm lub ntiajteb txawj nqus sib cais xav tau, yog li flotation yog siv. Qhov ceev dua ntawm wolframite ua rau lub ntiajteb txawj nqus concentration zoo thiab pheej yig.
Q: Puas muaj lwm yam tungsten minerals ntawm kev lag luam txaus siab?
Tsuas yog marginally. Minerals xws li txhuas tungstate thiab calcium molybdate tshwm sim nyob rau hauv ib co deposits, tab sis lawv tsis yog ib qho tseem ceeb qhov chaw piv nrog cov wolframite series thiab scheelite.
