Lub ntiaj teb lub pob zeb yog tsim los ntawm ntau pob zeb thiab pob zeb. Qee tus ntawm lawv tau tsim tsis ntev los no, lwm tus - ntau txhiab xyoo dhau los. Hauv tsab xov xwm no, peb yuav qhia koj txog ib qho ntawm cov pob zeb qub tshaj plaws hauv peb lub ntiaj teb - ferruginous quartzite. Lawv zoo li cas thiab lawv muaj dab tsi? Thiab lawv siv los ntawm tib neeg li cas? Nyeem txhua yam hauv qab no.
Cov lus qhia dav dav txog tus tsiaj
Ferrous quartzite (lwm cov npe yog jaspilite, itabirite, taconite) yog cov pob zeb metamorphic ntawm chemogenic-sedimentary keeb kwm nrog cov yam ntxwv nyias txheej txheej. Qhov no yog "tus neeg koom nrog" feem ntau nyob rau hauv qhov xwm txheej ntawm ferruginous-siliceous formations.
Ferrous quartzite suav nrog cov hauv qab no cov zaub mov:
- quartz;
- magnetite;
- martite;
- hematite;
- biotite;
- chlorite;
- Ypyroxene;
- amphibole thiab lwm tus.
Qhov muaj lwm yam minerals nyob rau hauv lub pob zeb tuaj yeem txiav txim siab los ntawm kev muaj pes tsawg leeg ntawm thawj cov sediment, nrog rau qhov tob ntawm cov txheej txheem.metamorphization.
Kev tso nyiaj ntawm ferruginous quartzite feem ntau yog nyob rau hauv cov ntaub thaiv npog thiab cov platforms ntawm Precambrian lub sijhawm. Cov txheej txheem ntawm kev tsim cov pob zeb no tau tshwm sim kwv yees li 2.5-3 billion xyoo dhau los. Kev sib piv: lub hnub nyoog ntawm peb ntiaj chaw yog kwv yees los ntawm cov kws tshawb fawb ntawm 4.5 billion xyoo.
Basic pob zeb khoom
Ferrous quartzite yog qhov txawv ntawm cov txheej txheem hauv qab no ntawm lub cev thiab cov yam ntxwv:
- Hardness - 7 ntawm Mohs nplai.
- Pob zeb xim - liab-xim av, tsaus; qee zaum grey lossis liab-grey.
- Density of ferruginous quartzite - 3240-4290 kg/m3.
- Compressive zog - los ntawm 180 txog 370-400 MPa (nyob ntawm seb cov ntsiab lus ntawm silicates hauv pob zeb).
- Refractoriness - mus txog +1770 ̊С.
- Cov qauv ntawm pob zeb yog nplua-grained lossis crystalline-grained.
- Cov pob zeb zoo nkauj yog txheej, nyias nyias.
Ironiferous quartzite: keeb kwm thiab kev faib ntawm pob zeb
Jespilites tuaj yeem tshwm sim hauv txheej txheej ntawm ntau yam tuab hauv cov pob zeb qub ntawm cov keeb kwm metamorphic. Feem ntau lawv tau ua ke nrog micas, amphibolites, shales lossis gneisses. Raws li txoj cai, ferruginous quartzite yog cov khoom lag luam ntawm metamorphization ntawm volcanic sedimentary pob zeb ua kom muaj txiaj ntsig zoo hauv cov hlau oxides. Cov yav tas feem ntau yog ua los ntawm volcanic eruptions tshwm sim nyob rau hauv dej.
Cov nyiaj nplua nuj tshaj plaws ntawm ferruginous quartzite yog nyob rau hauv Kola Peninsula, hauv Krivoy Rog (Ukraine), nyob rau sab hnub tuaj, sab qaum tebKazakhstan, nyob rau hauv Upper Lake cheeb tsam (USA), raws li zoo raws li nyob rau hauv lub Kursk magnetic anomaly. Cov xeev hauv qab no muaj cov peev txheej loj tshaj plaws ntawm cov peev txheej no:
- Russia;
- Ukraine;
- USA;
- Australia;
- India;
- Kazakhstan;
- South Africa;
- Liberia;
- Guinea;
- China.
Ntau yam ntawm ferruginous quartzite
Jaspilites yog qhov txawv hauv petrology:
- Wide bands (dhau 10 millimeters).
- Cov kab txaij nruab nrab (3-10 millimeters).
- Thinly striped (txog 3 millimeters).
Cov caj ces ntawm cov hlau quartzite:
- Magnetite.
- Hematite.
- Martite.
- YHydrohematite.
- Magnetite-ankerite.
- Magnetite-hematite nrog interlayers ntawm jasper (ua tau jaspilites).
Cov tshuaj muaj pes tsawg leeg ntawm ib qho qauv yog txiav txim siab los ntawm cov ntsiab lus ntawm silicate thiab ore minerals, nrog rau qib ntawm pob zeb crystallization. Txawm li cas los xij, tus yam ntxwv ntawm tag nrho cov ferruginous quartzite yog qhov tseeb tias cov tshuaj SiO2, FeO thiab Fe2O 3. tag nrho ua rau 90% ntawm tag nrho cov pob zeb. Cov khoom seem muaj nyob rau hauv me me proportions (tsis ntau tshaj 1-2%).
Nws tsim nyog sau cia tias qhov qub tshaj plaws ferruginous quartzite nyob hauv ntiaj teb tau pom nyob rau ntawm cov kob ntawm Greenland, hauv thaj av Isua. Lawv lub hnub nyoog yog kwv yees los ntawm geologists ntawm 3,760 lab xyoo.
Siv pob zeb
Ferrous quartzite davyog siv nyob rau hauv ferrous metallurgy ua raw khoom rau zus tau tej cov hlau, cam khwb cia hlau thiab lwm yam khoom. Tsis tas li ntawd, cov khoom plig thiab cov hniav nyiaj hniav kub pheej yig yog tsim los ntawm kev ua tiav thiab polished jaspilites, uas muaj cov qauv txawv txawv.
Lithotherapists ntaus nqi rau jaspilites lub peev xwm tshwj xeeb los ntxuav cov ntshav, txhim kho nws txoj kev ncig thiab txo cov poj niam mob khaub thuas. Hauv esotericism, feem ntau ntseeg tias lub pob zeb no muaj lub zog muaj zog. Jaspilite talismans ua lub luag haujlwm ntawm ib hom ntaub thaiv npog rau tus neeg, tiv thaiv nws tus tswv ntawm tus kheej tsaus ntuj thiab kev xav phem.
Kev txhim kho ntawm quartzite hauv kev lag luam
Ib txheej ntawm ferruginous quartzite nrog cov ntsiab lus ferrum ntau dua 30% hu ua hlau ore. Txawm li cas los xij, xws li ore yuav tsum muaj kev nplua nuj. Qhov no yog cov txheej txheem kev ntsuas, lub hom phiaj ntawm qhov kawg yog txhawm rau nce qhov feem pua ntawm cov hlau hauv pob zeb kom muaj nuj nqis siab tshaj plaws. Cov txheej txheem no ua li cas?
Thaum pib ntawm lub voj voog thev naus laus zis, cov hlau ore muab rho tawm los ntawm lub mine lossis chaw txua txiag zeb raug xa mus rau cov nroj tsuag crushing. Nyob ntawd, cov pob zeb loj loj mus hla ntau theem ntawm kev sib tsoo, ua rau cov hmoov zoo quartzite.
theem tom ntej yog kev sib cais ntawm cov hlau ntshiab ntawm cov nplej ntawm cov pob zeb pov tseg. Ua li no, quartzite grits yog poured ua ke nrog ib tug kwj ntawm dej rau hauv ib tug sib nqus separator. Hlau hais yog nyiam los ntawm cov hlau nplaum, thiab cov quartzite ntxhia fragments yog sieved. Cov zis yog ib qho concentrate, uas yog ces sinteredmus rau pellets thiab xa mus rau ib tug steel cog rau tom ntej steel smelting.
In xaus
Ferrous quartzite yog ib lub pob zeb qub tshaj plaws hauv ntiaj teb. Nws cov deposits raug kaw rau lub hauv paus ntawm Precambrian thiab thaum ntxov Proterozoic platforms. Hauv kev lag luam niaj hnub no, cov tsiaj no yog siv los ua metallurgy, ua cov khoom siv raw rau kev tsim cov hlau thiab dov hlau.
