pob zeb diamond mining

Txheem:

Txawm tias muaj tseeb hais tias lub pob zeb diamond txiav yog suav hais tias yog lub pob zeb kim tshaj plaws nyob rau hauv tag nrho cov hniav nyiaj hniav kub kev lag luam, nws tsis yog ib tug tsawg mineral. Nws yog mined nyob rau hauv ntau lub teb chaws, tab sis cov txheej txheem rho tawm nws tus kheej tsis yog tsuas yog tus nqi ntawm kev nqis peev nyiaj txiag, tab sis kuj txaus ntshai thiab nyuaj heev. Ua ntej cov pob zeb diamond tshwm sim ntawm lub khw muag khoom, lawv "niam txiv" mus ntev heev, qee zaum kaum xyoo.

Pob zeb diamond deposit

pob zeb diamond mining

Pob zeb diamond yog tsim los ntawm qhov kub thiab txias (los ntawm 1000 ° C) thiab kub siab heev (los ntawm 35 kilobars). Tab sis lub ntsiab mob rau nws tsim yog qhov tob, ncav cuag ntau tshaj 120 kilometers nyob rau hauv av. Nws yog nyob rau hauv tej yam kev mob uas densification ntawm siv lead ua lattice tshwm sim, uas yog, nyob rau hauv qhov tseeb, pib ntawm tsim ib pob zeb diamond. Tom qab ntawd, vim yog magma eruptions, cov deposits tuaj ze rau ntawm lub ntiaj teb thiab nyob rau hauv lub thiaj li hu ua kimberlite kav. Tab sis txawm nyob ntawm no lawv qhov chaw nyob tob hauv qab lub ntiaj teb crust. Lub luag haujlwm ntawm cov neeg nrhiav yog, ua ntej ntawm tag nrho cov, nrhiav cov kav dej, thiab tsuas yog tom qab ntawd mus rau kev khawb.

pob zeb diamond mining
Kimberlite cev

Mining yog ua los ntawm kwv yees li 35 lub teb chaws nyob rau hauv geologically ruaj khov continents. Qhov zoo tshaj plaws deposits nyob rau hauv teb chaws Africa, Russia, Is Nrias teb, Brazil, thiab sab qaum teb America.

Yuav ua li cas pob zeb diamond yog mined

pob zeb diamond mining

Txoj kev mining nrov tshaj plaws yog quarrying. Nws yog khawb, qhov yog drilled, explosives muab tso rau hauv lawv thiab cua tshuab, nthuav tawm kimberlite kav. Cov pob zeb uas tau tshwm sim yog thauj mus rau kev ua cov nroj tsuag kom pom cov pob zeb. Qhov tob ntawm quarries yog qee zaum tseem ceeb heev - txog li 500 meters lossis ntau dua. Yog tias cov kav dej kimberlite tsis pom nyob rau hauv cov quarries, ces cov dej num tau ua tiav thiab cov chaw txua txiag zeb raug kaw, vim nws tsis pom zoo kom nrhiav cov pob zeb diamond tob.

pob zeb diamond mining
Mir kimberlite yeeb nkab (Yakutia)

Yog tias cov kav dej kimberlite nyob ntawm qhov tob ntawm ntau dua 500 m, tom qab ntawd lwm txoj kev yooj yim ntawm kev rho tawm yog siv - kuv. Nws yog qhov nyuaj dua thiab txaus ntshai, tab sis, raws li txoj cai, feem ntau yeej-yeej. Qhov no yog txoj kev siv los ntawm txhua lub tebchaws tsim pob zeb diamond.

pob zeb diamond mining
Mining ntawm pob zeb diamond hauv mines

Tom ntej no, tsis muaj tsawg dua theem tseem ceeb hauv kev tsuas yog kev rho tawm lub pov haum los ntawm cov ore. Rau qhov no, ntau txoj kev tuaj yeem siv:

  1. Cov khoom siv rog. Cov pob zeb tsim tau muab tso rau ntawm ib lub rooj uas npog nrog ib txheej roj, nrog cov dej ntws. Pob zeb diamond lo rau hauv lub hauv paus fatty, thiab dej ntws tawm cov pob zeb pov tseg.
  2. X-ray. Qhov no yog ib txoj hauv kev ntawm kev txheeb xyuas cov ntxhia. Txij li thaum nws glows nyob rau hauv x-rays, nws yog pom thiab manually txheeb los ntawm cov tsiaj.
  3. High density suspension. Tag nrho cov ua hauj lwm tawm pob zeb yog moistened nyob rau hauv ib tug tshwj xeeb tov. Cov pob zeb pov tseg mus rau hauv qab, thiab cov pob zeb diamonds ntab mus rau saum npoo.
pob zeb diamond mining
Rog installation

Kuj tseem muaj txoj hauv kev yooj yim tshaj plaws los rho cov pob zeb diamond, uas tuaj yeem pom hauv ntau cov yeeb yaj kiab hauv kev taug txuj kev nyuaj - los ntawm placers. Yog tias cov yeeb nkab kimberlite raug rhuav tshem los ntawm ntau yam huab cua tshwm sim, piv txwv li, lawg, nag, nag xob nag cua, ces cov pob zeb, nrog rau cov xuab zeb thiab pob zeb, mus rau ko taw. Peb muaj peev xwm hais tias nyob rau hauv cov ntaub ntawv no lawv tsuas yog pw nyob rau saum npoo ntawm lub ntiaj teb no. Nyob rau hauv rooj plaub no, yooj yim sifting ntawm pob zeb yog siv los xyuas cov ntxhia. Tab sis cov xwm txheej zoo li no, uas peb feem ntau pom hauv cov ntxaij vab tshaus TV, yog qhov tsawg heev. Feem ntau, cov pob zeb diamond mining tseem ua tiav ntawm kev lag luam, qhov loj dua.