Sainzi yeruzivo rwegirazi: Nekuvandudzika kweruzivo rwevanhu nezvekuchengetedzwa, vanhu pavanosarudza girazi, harisisiri girazi repakutanga chete, asi kudiwa kwekuwedzera kugadziriswa kwegirazi zvakadzama.
Kutanga negirazi rakasimba kupfuura zvese, kugona kwekutakura magirazi akasimba igirazi rakajairika ka5 kana zvakadaro, asi harisi girazi rakasimba zvechokwadi, nekuti kana girazi rapwanyika kana kuti rinogona kukanganisa kuchengetedzeka kwehupenyu hwevanhu.
Pane mhinduro dzakanaka here? Pfungwa ndeyekushandisa zvidimbu zviviri zvegirazi zvakaputirwa pakati pefirimu kugadzira girazi rakanamirwa, kuitira kuti kunyange chidimbu chegirazi chigone kupwanyika pasina kukanganisa kuchengetedzeka.
Zvinozivikanwa kuti girazi rakanyoroveswa, kunyangwe rakasimba, rine poindi isina kusimba. Izvi zvinokonzerwa nemutengo wekuva nenickel sulfide, iyo inogona kuputika kana nickel sulfide ikachinjwa kubva pamamiriro ezvinhu kuenda pamamiriro akagadzikana. Saka mhinduro yakanaka ndeyekubatanidza girazi rakanyoroveswa, girazi rakanyoroveswa kubva pazvikamu zvitatu pazviuru kusvika pachikamu chimwe pazviuru gumi, girazi rakanyoroveswa rakadaro rikazoraswa, kuchengetedza kuchawedzera.
Semuenzaniso, magirazi akaputirwa anowanzo shandiswa mudenga rezuva, girazi rinorinda, denga, shedhi yemotokari, nezvimwewo. Magirazi akadai senzira dzekufamba nadzo dzegirazi anofanira kuyedzwa muchina wekuita kuti girazi rizviputire rega rega kana ranyoroveswa kuti rideredze njodzi yekuputika kwegirazi rinonyoroveswa.
Nguva yekutumira: Zvita-31-2020
