Ukusetyenziswa ngokupheleleyo kweentsalela zegolide ligama elishushu kwicandelo lezemigodi kwiminyaka yakutshanje, kwaye uphando malunga nokusetyenziswa ngokupheleleyo kweentsalela zegolide luye lwenziwa. Kuyaqondakala ukuba imveliso yeentsalela zemigodi yegolide kwilizwe lam ifikelele kwiitoni ezingaphezu kwe-1.5 yeebhiliyoni, kodwa izinga lokusetyenziswa ngokupheleleyo lingaphantsi kwama-20%. Okwangoku, eyona ndlela ifanelekileyo yokufumana ukulahlwa kweentsalela zemigodi yegolide ngaphandle kwenkunkuma kwaye kungenabungozi ibandakanya iindlela ezimbini: ukuzaliswa phantsi komhlaba kunye nokusetyenziswa kwezixhobo. Inkqubo yendabuko yokuzaliswa kwemigodi yegolide kukugcwalisa iintsalela zemigodi eqokeleleneyo equleni, ngelixa iintsalela zemigodi eqokeleleneyo ziqokelelwe edamini leentsalela zegolide. Ngenxa yokuba umxholo wegolide ore uhlala uphantsi, ukuze kufumaneke izixhobo zegolide ezininzi, kudla ngokufuneka kwenziwe imisebenzi yokugaya. Ke ngoko, iintsalela zemigodi eqokeleleneyo ziqulathe okuninzi, ngelixa iintsalela zemigodi eqokeleleneyo zincinci, kwaye kuphela iintsalela zemigodi eqokeleleneyo ezizaliswa phantsi komhlaba. , akunakwenzeka ukunciphisa inkunkuma eqinileyo ngokusisiseko kunye nokunciphisa amandla okugcina amachibi eentsalela zegolide. Ukugcina iintsalela zegolide kusafuna umhlaba omninzi kwaye konakalisa okusingqongileyo. Ukulahlwa kweentsalela zegolide kube yinto ephambili ethintela uphuhliso oluzinzileyo lwezoqoqosho lwemigodi yegolide.
Ngomhla we-10 kweyoMdumba ngo-2022, uMphathiswa wezoShishino noBugcisa boLwazi, iKhomishini yoPhuhliso noHlaziyo yeSizwe, uMphathiswa weSayensi noBugcisa, uMphathiswa wezeMali, uMphathiswa wezoBugcisa beNdalo, uMphathiswa we-Ecology kunye neNdalo, uMphathiswa wezoRhwebo, kunye noLawulo lweRhafu yeSizwe bakhuphe ngokubambisana "Ngokushicilelwa nokusasazwa ngokukhawulezisa ukuKhuthazwa kweZixhobo zeShishini". "Isaziso malunga neSicwangciso sokuSebenza sokusetyenziswa okuBanzi" sifuna ukuba ngo-2025, ubunzulu bokuveliswa kwenkunkuma eqinileyo yemizi-mveliso kumashishini aphambili afana nesinyithi nentsimbi, iintsimbi ezingenayo i-ferrous, kunye namashishini eekhemikhali kwilizwe lam bunciphe, inqanaba lokusetyenziswa ngokupheleleyo kwenkunkuma eqinileyo yemizi-mveliso emininzi liphuculwe kakhulu, ishishini lezixhobo ezihlaziyekayo liza kuqhubeka nokukhula ngendlela esempilweni, kwaye izixhobo zemizi-mveliso ziya kusetyenziswa ngokupheleleyo. Ukusebenza kakuhle kuphuculwe kakhulu, kwaye izinga lokusetyenziswa ngokupheleleyo kwenkunkuma eqinileyo yemizi-mveliso emininzi liza kufikelela kwi-57%. Ke ngoko, ukusetyenziswa kwezixhobo zegolide kubalulekile.
I-Sino-German Key Laboratory of Magnetoelectricity and Intelligent Mineral Processing yeHuate Company yenza inani elikhulu lovavanyo lokuphucula i-gold tailings kwindawo yaseYantai. Izinto eziphambili ze-mineral ze-gold tailings zii-gangue minerals ezifana ne-quartz, i-feldspar kunye ne-calcite, kunye nenani elincinci le-mechanical Iron, i-magnetic iron, i-iron oxide, i-titanium oxide, i-iron silicate, i-iron sulfide kunye nezinye izinto ezingcolisayo. Uluhlu lobukhulu be-particle ye-gold tailings ngokubanzi yi-200 mesh 50-70%, ubungakanani be-particle buyafana, kwaye buqulathe udaka oluncinci. Ubungakanani be-Fe2O3 obungacocekanga yi-1-3%, umxholo we-TiO2 yi-0.1-0.3%, umxholo we-CaO yi-0.12-1.0%, kwaye ubumhlophe be-gold tailings yi-5-20%. Kukho umahluko othile ekubunjweni kwe-tailings eziveliswa zi-concentrators ezahlukeneyo. Ezinye iintsalela zinomxholo ophezulu weSiO2, okanye ziqulathe i-spodumene, i-sericite, njl. Uninzi lwazo luluhlobo lwe-feldspar-quartz type pegmatite, olunexabiso eliphezulu lokusetyenziswa kwakhona.
Inkampani iHuate yasungula inkqubo yokunceda edibeneyo "yokwahlulwahlulwa kwemagnethi kunye nomxhuzulane", yaza yafumana imvume yelungelo lomenzi ngoSeptemba 2020. Umxholo welungelo lomenzi umalunga "nendlela epheleleyo yokusetyenziswa kweentsalela zegolide eziqulethe igolide, isinyithi kunye nefeldspar. Okwangoku, kusetyenziswe izicelo ezingaphezu kweshumi ezinkulu kwimizi-mveliso eYantai, eShandong, ezona zinkulu kuzo zinokucubungula iitoni ezingama-8,000 zeentsalela zegolide ngosuku. Kule nkqubo, izixhobo zokunceda eziphambili ezifana nescreen sokungcangcazela, i-spiral chute, itafile yokushukumisa, i-drum magnetic separator, i-wet strong magnetic plate magnetic separator, i-vertical ring high gradient magnetic separator, kunye ne-electromagnetic slurry magnetic separator zisetyenziswa ngokudibeneyo. Ngelixa kufunyanwa i-feldspar concentrate ekumgangatho ophezulu kwiintsalela, iimveliso ezixabisekileyo ezifana ne-magnetite, iiminerali ezinegolide, izinto eziluhlaza zesamente, kunye nezinto zokwenza izitena nazo ziyafunyanwa ukuze kufezekiswe ukusetyenziswa okubanzi kweentsalela zegolide kwaye kufezekiswe ukungabikho kokukhupha ngendlela ejikelezayo.
I-vertical ring high gradient magnetic separator kunye ne-electromagnetic slurry high gradient magnetic separator zisetyenziswa kwiprojekthi ye-gold tailings
Ixesha lokuthumela: Matshi-11-2022