Suav steel loj qhov muag Simandou

Tuam Tshoj steel tuam txhab Baowu yog lub taub hau ntawm ib pab pawg neeg ntawm steelmakers nrhiav los tsim lub loj loj Simandou hlau mine nyob rau hauv Guinea, coj los ntawm Aluminium Corp. ntawm Tuam Tshoj (Chalco) raws li nws nrhiav kev ruaj ntseg khoom ntawm raw khoom,  Caixin Ntiaj teb no qhia  hnub Tuesday . .

Lub xeev-tus tswv loj xav tsim cov hlau ore mine tom qab tau txais kev koom tes ntawm txoj haujlwm tuav los ntawm Chalco hauv kev koom tes nrog lwm cov tuam txhab steel.

Tuam Tshoj lub koom haum steel thiab cov tuam txhab hlau loj tau thov kom muaj kev nce qib hauv kev tsim cov hlau hlau hauv tsev nrog rau kev nqis peev ntau dua hauv  kev tshawb nrhiav txawv teb chaws kom ntseeg tau cov khoom siv . Lub teb chaws xyoo tas los tsim 56% ntawm lub ntiaj teb cov hlau. 

Tuam Tshoj yog lub ntiaj teb cov neeg siv khoom siv hlau loj tshaj plaws, nrog rau nws qhov  kev thov tau tsim kom muaj 1.225-billion tonnes hauv 2020,  raws li tsoomfwv xav. Tab sis nws muaj kev vam khom hnyav rau kev xa tawm, tau xa mus rau ib-bn vam tons ntawm ore hauv 2019.

Baowu kwv yees kom Simandou nce thiab khiav tuaj yeem xav tau ntau dua $ 15 nphom txhua tus tau hais tom qab tsim cov txheej txheem tsim nyog tsim tawm, xws li kev tsheb ciav hlau hla teb chaws thiab qhov chaw nres nkoj dej tob.

Cov kws tshaj lij kev lag luam tau txiav txim siab Simandou yog qhov loj tshaj plaws qib siab hlau ore tso nyiaj hauv ntiaj teb, tab sis nws tau tawm tsam kom nkag mus rau ntau xyoo. 

Rio Tinto yav dhau los tau tuav txoj cai los tsim tag nrho plaub lub blocks ntawm Simandou ua ntej raug tshem tawm ntawm txoj cai blocks 1 thiab 2 hauv 2008. Cov cai no tau mus rau kev koom tes ntawm  Israeli billionaire Beny Steinmetz's BSG Resources thiab Vale.

Nyob rau lub Peb Hlis, Guinea  tau xaiv Tuam Tshoj-rov qab koom nrog  SMB-Winning los tsim cov blocks 1 thiab 2, uas tuav kwv yees kwv yees ntau dua 2 billion tonnes ntawm qib siab hlau ore.

Kev thov

Benchmark hlau ore yav tom ntej nyob rau hauv Tuam Tshoj tau tsiv mus nyob rau hauv ib tug nruj ntau yam rau hnub Tuesday, raws li tus mob coronavirus thov kom tsis txhob muaj kev lag luam rov qab ua ntej hnub so pej xeem pib tom qab lub lim tiam no.

Qhov kev lag luam zoo tshaj plaws ntawm cov hlau ore yav tom ntej ntawm Dalian Cov Khoom Muag Khoom Muag, rau lub Cuaj Hli xa khoom, kaw 0.3% ntawm 757 yuan ($ 107.05) ib tonne, qhov poob ncaj thib ob.

Kev lag luam ntawm kev sib pauv yuav raug kaw txij hnub Thursday rau Tuam Tshoj Dragon Boat Success thiab rov qhib rau hnub Monday.

Hlau ore xa los ntawm Australia thiab Brazil tau nce 1.4 lab tonnes los ntawm lub lim tiam dhau los mus rau 26.57 lab tonnes rau lub lim tiam xaus rau Lub Rau Hli 21, cov ntaub ntawv los ntawm kev pab tswv yim Mysteel qhia, feem ntau yog tsav los ntawm Australia.

AG/SAG Mill Liner Khoom Xaiv

Cov khoom sib txawv crushed, txawv kev ua haujlwm xav tau cov ntaub ntawv sib txawv kom haum. Yuav kom ua tau raws li qhov yuav tsum tau ua rau cov neeg siv khoom AG lossis SAG zeb liners, cov ntaub ntawv ntawm cov zeb loj loj yog cov hlau manganese siab, siab alloy dawb cam khwb cia hlau, siab carbon chromium-molybdenum steel, nruab nrab carbon chromium-molybdenum steel, thiab lwm yam. Cov qauv muaj xws li austenite, martensite, bainite, thiab pearlite.

H&G Machinery muab cov khoom hauv qab no los nrum koj AG lossis SAG zeb liners:

High Manganese hlau

High manganese steel yog cov khoom siv niaj hnub rau kev puas tsuaj thiab zeb hauv ob sab phlu. Nws yog dav siv nyob rau hauv ntau yam hnav khaub ncaws vim hais tias ntawm nws zoo kawg li ua hauj lwm hardening nyhuv. Yog vim li cas vim li cas lub siab manganese steel hauv ob sab phlu muaj lub neej ua haujlwm ntev yog tias lub pob zeb loj muaj qhov nrawm nrawm thiab muaj kev cuam tshuam loj ntawm lub pob sib tsoo thiab cov ore. Kev ua hauj lwm hardening nyhuv ntawm high manganese steel yog qhov tseem ceeb, thiab cov txheeb ze ntawm cov ore thiab hauv ob sab phlu phaj ceev yog me me. Txawm li cas los xij, cov hlau manganese siab kuj muaj qhov tsis muaj zog txaus, uas yog, thaum muaj kev cuam tshuam loj, vim nws lub zog tsis muaj zog, nws yooj yim rau rheology, ua rau loj deformation ntawm liner, nyuaj rau disassemble lub liner, thiab cov ntaub ntawv zoo. bolt yuav tawg nyob rau hauv mob hnyav.

Alloy dawb cam khwb cia hlau

Cov neeg sawv cev ntawm cov hlau cam khwb cia hlau yog siab chromium cam khwb cia hlau, thiab cov ntsiab lus Cr feem ntau yog ntau dua 12%. Vim tias nws muaj cov pas nrig-zoo li high-hardness M7C3 hom carbides, nws qhia tau hais tias muaj zog dua thiab muaj kev cuam tshuam zoo dua qub (piv rau cov hlau cam khwb cia dawb), thiab nws tau raug suav hais tias yog ib tiam tshiab ntawm cov ntaub ntawv hnav-tiv taus, thiab nws tau ua. siv rau lub liner ntawm pob zeb. Txawm li cas los xij, qhov cuam tshuam ntawm high-chromium cam khwb cia hlau tseem tsis tshua muaj (feem ntau yog 5 ~ 7 J / cm2), yog li high-chromium cam khwb cia hlau tsuas yog tsim rau cov mining ntawm cov me me thiab cov kab loj loj hauv cov cement mills. Cov mills me me-ntev (inch hauv qab 2.5 m) tsis haum rau cov mills loj-inch uas muaj kev cuam tshuam loj, tshwj xeeb tshaj yog loj SAG zeb.

Hlau alloy

Alloy steel raws li cov khoom hnav-tiv taus kuj tau ua tiav cov txiaj ntsig zoo hauv kev siv tswv yim. Qhov laj thawj tseem ceeb yog tias cov ntsiab lus carbon ntawm cov hlau alloy thiab cov hom thiab cov ntsiab lus ntawm cov hlau alloy tuaj yeem sib txawv hauv ntau qhov ntau. Nrog cov txheej txheem kev kho cua sov sib txawv, cov qauv thiab cov khoom ntawm cov hlau alloy tuaj yeem hloov kho nyob rau hauv ib qho loj heev kom tau txais cov khoom siv zoo dua qub thiab ua tau raws li qhov yuav tsum tau ua ntawm kev ua haujlwm sib txawv. Kev tshawb fawb thiab kev xyaum tau pom tias cov hlau alloy yog tsim los ua ib lub  zeb liner  rau cov tshuab loj ntawm tus kheej sib tsoo thiab cov tshuab semi-tus kheej sib tsoo, raws li qhia hauv cov lus:

Nws tuaj yeem pom tau tias martensitic Cr-Mo alloy steel hauv ob sab phlu muaj kev siv zoo hauv lub tshuab nws tus kheej, ua raws li pearlite Cr-Mo alloy steel hauv ob sab phlu. Pearlite Cr-Mo alloy steel hauv ob sab phlu tau dav siv hauv semi-automatic mills. Txawm hais tias nws hnav tsis kam yog me ntsis phem dua li martensitic Cr-Mo alloy steel, nws qhov cuam tshuam toughness yog siab dua martensitic Cr-Mo alloy steel, yog li nws tsim nyog rau lub tshuab loj semi-tus kheej-milling nrog kev cuam tshuam loj.

@Nick Sun       [email protected]