Kulawa kwa zinc ore

Kulawa kwa zinc ore

Mlingo wa miyala ya mtovu yotengedwa ku migodi ya lead-zinki nthawi zambiri imakhala yosakwana 3%, ndipo zinc imakhala yosakwana 10%.Avereji ya giredi ya lead ndi zinki m’migodi yaiwisi ya m’migodi ya zinki yaing’ono ndi yapakatikati ndi pafupifupi 2.7% ndi 6%, pamene migodi yaikulu yolemera imatha kufika 3% ndi 10%.The zikuchokera tcheru zambiri kutsogolera 40-75%, nthaka 1-10%, sulfure 16-20%, ndipo nthawi zambiri amakhala ndi zitsulo coexist monga siliva, mkuwa, ndi bismuth;Mapangidwe a zinc concentrate nthawi zambiri amakhala pafupifupi 50% zinki, pafupifupi 30% sulfure, 5-14% yachitsulo, komanso amakhala ndi lead, cadmium, mkuwa, ndi zitsulo zamtengo wapatali zochepa.Pakati pa mabizinesi ang'onoang'ono opangira migodi ndi kusankha, 53% ali ndi kalasi yochepera kapena yofanana ndi 5%, 39% ali ndi giredi 5% -10%, ndipo 8% ali ndi giredi yoposa 10%.Nthawi zambiri, mtengo wokhazikika pamigodi yayikulu ya zinki yokhala ndi giredi yoposa 10% ndi pafupifupi 2000-2500 yuan/tani, ndipo mtengo wa zinki umachulukiranso pamene kalasi ikucheperachepera.

Njira yamtengo wapatali ya zinc concentrate

Pakadali pano palibe njira imodzi yolumikizira mitengo ya zinki ku China.Ambiri osungunula ndi migodi amagwiritsa ntchito SMM (Shanghai Nonferrous Metals Network) mitengo ya zinki kuchotsera ndalama zolipirira kuti adziwe mtengo wamtengo wapatali wa zinki;Kapenanso, mtengo wa transaction wa zinc concentrate ungadziwike pochulukitsa mtengo wa zinki wa SMM ndi chiŵerengero chokhazikika (mwachitsanzo 70%).

Zinc concentrate imawerengedwa ngati ndalama zogulitsira (TC / RC), choncho mtengo wa zinki zitsulo ndi ndalama zopangira mafuta (TC / RC) ndizo zikuluzikulu zomwe zimakhudza ndalama za migodi ndi smelters.TC/RC (Malipiro ochiritsira ndi kuyengetsa opangira zinthu) amatanthauza kukonza ndi kuyenga ndalama zosinthira zinki kukhala zinki woyengedwa.TC ndi chindapusa kapena chindapusa choyenga, pomwe RC ndiye ndalama zoyenga.Ndalama zolipirira (TC/RC) ndi mtengo woperekedwa ndi ochita migodi ndi ochita malonda ku smelters kuti akonze zinki kukhala zinki yoyengedwa.Ndalama zoyendetsera TC / RC zimatsimikiziridwa ndi zokambirana pakati pa migodi ndi osungunula kumayambiriro kwa chaka chilichonse, pamene mayiko a ku Ulaya ndi North America amasonkhana mu February pamsonkhano wapachaka wa AZA wa American Zinc Association kuti adziwe mtengo wa TC / RC.Ndalama zolipirira zimakhala ndi mtengo wokhazikika wachitsulo wa zinki ndi mtengo womwe umasinthasintha ndi kutsika ndi kusinthasintha kwamitengo yachitsulo.Kusintha kwa mtengo woyandama ndikuwonetsetsa kuti kusintha kwa ndalama zolipirira kumagwirizana ndi mtengo wa zinki.Msika wapakhomo makamaka umagwiritsa ntchito njira yochotsera mtengo wokhazikika pamtengo wa zinki kuti adziwe mtengo wa concentrate kapena kukambirana kuti adziwe mtengo wa zinc ore.