1. Iron ore yog lub ntsiab raw khoom rau kev lag luam hlau. Thaum xyoo 1970, tag nrho cov hlau hlau thoob ntiaj teb tau ze li ntawm 350 billion tons, ntawm li 150 billion tons ntawm ore reserves (tsis suav nrog Tuam Tshoj cov reserves). Soviet iron ore reserves yuav luag txog li ntawm ib feem peb ntawm lub ntiaj teb cov nyiaj khaws cia, thawj thawj zaug hauv lub ntiaj teb, raws li Brazil, Bolivia, Canada, thiab Australia. Tus nqi ntawm cov hlau ore reserves nyob rau hauv cov tsib lub teb chaws no rau txog 90% ntawm lub ntiaj teb cov nyiaj reserves. Cov hlau iron ntawm Soviet Union hauv xyoo 1970s yog 1.95 rau 246 lab tons, accounting rau lub quarter ntawm lub ntiaj teb tag nrho cov nyiaj xyoo hauv tib lub sijhawm. Nws yog cov hlau iron ntau tshaj plaws. Cov hlau zais hauv Australia, Brazil, Tebchaws Asmeskas, Tuam Tshoj, thiab Canada tau hais txog qhov thib ob txog rau qib thib 6. Cov hlau nplua nuj cov hlau nplua nuj yog ib qho tseem ceeb rau txoj kev lag luam hlau thiab hlau. Qhov nruab nrab hlau ore piv rau hauv lub ntiaj teb no qis dua. Nws yog siab tshaj 2.00 ntawm qhov kawg ntawm xyoo 1950 thiab txog 1.80 ntawm qhov kawg ntawm xyoo 1960. Thaum kawg ntawm xyoo 1970, nws poob mus txog 1.70. Qhov tsawg dua qhov piv ntawm hlau rau or ore, tsawg dua pob zeb pob zeb nkag hauv lub tshuab ua kom sov, txo qis ntawm slag, txo qis roj noj, thiab ntau dua qhov nyiaj txiag tag nrho cov nyiaj txiag ntawm ironmaking ntau lawm. Raws li kev faib cov hlau nplua nuj me me maj mam, nws yog ib qho tsim nyog yuav ua ib txoj haujlwm zoo heev hauv cov ntxhiab ua ziab, sintering, pellets, thiab lwm yam kom txo cov hlau ntawm cov hlau, Nyob rau hauv lub teb chaws loj cov hlau ua tau nyob rau xyoo 1970, Nyiv muaj pes tsawg tus hlau ore, xws li 1.42 mus 1.47; ua raws li Federal Republic of Germany, los ntawm 1.42 mus 1.59; thiab Fabkis, qhov siab tshaj, los ntawm 2.00 rau 2.64.
2. Coke yog cov roj rau steel hlau kev lag luam.
3. Iron thiab steel kev lag luam kev pab cuam cov ntaub ntawv raw khoom. Ntxiv rau cov hlau loj thiab cov coke ua cov ntaub ntawv tseem ceeb, cov hlau thiab steel kev lag luam tseem xav tau cov ntaub ntawv xws li manganese ore, limestone, dolomite, fluorite, silica, thiab refractories. Raws li cov txheeb cais, ib qho nruab nrab ntawm 1.6 tons ntawm cov ntaub ntawv ntim khoom yuav tsum tau rau refining ib ton ntawm hlau. Manganese ore yog hu ua ferrous metal resource. Nws yog ib yam khoom raw ferroalloy. Nws tuaj yeem ua rau kom qhov nyuaj, kev ua haujlwm, kev muaj zog, thiab hnav tsis taus ntawm cov hlau, thiab nws kuj yog ib qho dej deoxidation desulfurizer rau lub tshuab ua cua sov.
