Izinto zokusetshenziswa I-aluminium trihydrate ihlanzwa kusuka ku-bauxite. Ama-deposit e-bauxite ebhizinisi (30-75% Al2O3) atholakala e-Australia, eJamaica, eFrance, eGuyana, eGuinea, e-USA naseBrazil. I-Bauxite ore incibilikiswa ku-caustic soda enamandla ukuze kwakheke i-sodium aluminate. I-aluminium trihydrate ibe isiba yi-neutralization (ngokuvamile nge-carbon dioxide) noma nge-autoprecipitation (inqubo ye-Bayer). Enye into yokusetshenziswa, i-sulfuric acid, yenzelwe ukukhiqizwa kwe-superphosphate kwa-Farmers Fertiliser Ltd. I-asidi ifika nge-road tanker bese ipompelwa emathangini okugcina.
Isinyathelo 1 – Ukusabela izithako ezingavuthiwe. I-aluminium trihydrate iyathuthwa futhi igcinwe ezikhwameni zethani elilodwa. Isikhwama ngasinye sithwalwa ngesiphanyeko siye e-feed hopper, lapho sivulwa khona futhi sithuthwe ethangini lokusabela. Amanzi okusabela, i-trihydrate kanye ne-sulfuric acid batch kuyavuselelwa isikhathi esithile kanye nomhwamuko wamanzi ophuma esigxotsheni.
Isinyathelo 2 – Ukwenza umkhiqizo wokugcina Ngemva kwesikhathi sokuphendula, kungaba uketshezi noma i-alum eqinile. Uma kunguketshezi, inqwaba egxilile ifakwa ethangini lokuxuba eligcwele amanzi okuxuba lapho iphola khona ngokuhamba kwesikhathi. I-alum ewuketshezi iyahlungwa bese ipompiwa ukuze igcinwe. Kunezindawo zokulayisha ngaphezulu eMorrinsville lapho kutholakala khona amakhemikhali amaningi oketshezi ematangini okuhambisa amathangi omgwaqo. Uma kwenziwe okuqinile, i-alum egxilile ifakwa emapani okukhipha amanzi lapho ifakwa khona, ngosizo lokupholisa ifeni. Amapani ayaphakanyiswa ngefoloko aye ezindaweni zokugcina amanzi bese esuka lapho ayiswa eSitshalweni Sokuchoboza bese efakwa ehophini. Izingcezu ziphulwa kakhulu yi-kibbler enkulu elandelwa yi-kibbler encane bese ihlolwa. Izinhlayiya ezinkulu ziya ehophini lokufaka amanzi bese zithengiswa njengomkhiqizo ohlanziwe. I-alum ehlonyiwe iyachotshozwa ngokujikeleza bese ihlolwa ukuze ibuyiselwe ku-rotary crusher noma ifakwe emaphaketheni njengomkhiqizo ogayiwe. Uthuli luqoqwa njalo ngohlelo lokukhipha amanzi bese luthengiswa njengomkhiqizo. Isitshalo Sokuchoboza siyaguquguquka futhi isilinganiso se-aluminium sulfate esigayiwe siyahlukahluka.
Isikhathi sokuthunyelwe: Feb-18-2022