Izinto eziluhlaza I-aluminium trihydrate ihlanjululwa kwi-bauxite. Iidiphozithi ze-bauxite zorhwebo (30-75% Al2O3) zenzeka e-Australia, eJamaica, eFrance, eGuyana, eGuinea, e-USA naseBrazil. I-Bauxite ore inyibilikiswa kwi-caustic soda enamandla ukuze yenze i-sodium aluminate. I-aluminium trihydrate emva koko ibangelwa yi-neutralization (ngesiqhelo nge-carbon dioxide) okanye yi-autoprecipitation (inkqubo yeBayer). Enye into eluhlaza, i-sulfuric acid, yenzelwe ukuvelisa i-superphosphate kwiFarmers Fertiliser Ltd. I-asidi ifika nge-road tanker kwaye ipompelwe kwiitanki zokugcina.
Inyathelo 1 – Ukuphendula izithako ezingavuthwanga. I-aluminium trihydrate iyathuthwa ize igcinwe kwiingxowa zetoni enye. Ingxowa nganye ithwalwa ngesinyusi ukuya kwi-feed hopper, apho ivulwa khona ize ithunyelwe kwi-reaction tank. Amanzi e-reaction, i-trihydrate kunye ne-sulfuric acid batch ziyaxutywa ixesha elithile kunye nomphunga wamanzi ophuma kwi-stack.
Inyathelo lesi-2 – Ukwenza imveliso yokugqibela Emva kwexesha lokuphendula, nokuba lulwelo okanye lulwelo oluqinileyo lwenziwe. Ukuba lulwelo, ibhetshi exineneyo ifakwa kwi-dilution tank ezaliswe ngamanzi anyibilikisiweyo apho iphola khona ngokuhamba kwexesha. I-liquid alum iyahluzwa ize ipompelwe kwindawo yokugcina. Kukho izixhobo zokukhupha ulwelo ngaphezulu eMorrinsville apho kukho inani leekhemikhali zolwelo ezifumaneka kwiitanki zokuhambisa iitanki zendlela. Ukuba lulwelo lwenziwe, i-concentrated alum ifakwa kwiipani zokuphosa apho ifakwa khona, incediswa kukupholisa ifeni. Iipani ziyaphakanyiswa ngefolokhwe ziye kwiirakhi zokugcina kwaye ukusuka apho zithathwa ziye kwiCrushing Plant kwaye zilahlwe kwi-hopper. Iziqwenga ziyaqhekeka ngakumbi yi-kibbler enkulu elandelwa yi-kibbler encinci ize ihlolwe. Amasuntswana amakhulu aya kwi-bagging hopper kwaye athengiswa njengemveliso enyibilikisiweyo. I-alum ehluziweyo iyatyunyuzwa kwaye ihlolwe ngakumbi ukuze ibuyiselwe kwi-rotary crusher okanye ifakwe kwibhegi njengemveliso egayiweyo. Uthuli luqokelelwa rhoqo ngenkqubo yokukhupha kwaye luthengiswa njengemveliso. Isityalo sokuQokelela siguquguquka kwaye umlinganiselo we-aluminium sulfate egayiweyo kwi-ground aluminium uyaguquguquka.
Ixesha lokuthumela: Feb-18-2022