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Matope ofiira ndi mankhwala zinyalala kwaiye amatchedwa Kupirira Bayer pamene akuyenga bauxite kubala aluminiyamu (okusayidi zotayidwa). Via njira kuyeretsedwa, aluminiyamu akhoza woyengedwa kubala zotayidwa. Komabe, bauxite omwe ndi miyala zofunika zilipo yopangira zotayidwa-anyamula okha 30-60% okusayidi zotayidwa. The zikuchokera otsala tichipeza silika, chitsulo ndi zina zinthu zosiyanasiyana ndi oxides.
Poona kufunika padziko lonse zotayidwa ndi kuchuluka kwa bauxite kuti wakhala kukonzedwa kuchotsa aluminiyamu, pali maiwe ambiri a matope ofiira kusungidwa m'malo okhala padziko lonse lapansi. Mwachionekere, ili ndi vuto chifukwa akuluakulu chilengedwe alkalinity mkulu wa sludge kuti amafuna nzeru zatsopano zomwe zingagwiritsidwe ntchito pokonza mtsinje zinyalala.
Chinthu chimodzi ndi Pre-ndondomeko bauxite kudzera wouma kupatukana ndondomeko kuti mutha kumvana aluminiyamu ndi kuchepetsa chitsulo, clays (kaolinite) ndipo inerts ena isanapite mwa Njira Bayer. Zimenezi amachepetsa chiwerengero cha silika zotakasika mu bauxite kudyetsedwa kwa ndondomeko Bayer, komanso kuchotsa kuchuluka inerts ndi (monga chitsulo) zimene zimachititsa matope m'badwo wofiira. Chifukwa ndi apamwamba zokolola za aluminiyamu ku bauxite ndi, m'munsi kumwa koloko caustic, ndi kutsikira mabuku a matope ofiira kwaiye. Otsala otsika aluminiyamu zipangizo bauxite akhoza kugwiritsidwa ntchito mu ulimi wa simenti ndi ntchito msewu yomanga.
cha ku Switzerland Zida & Technology wa kampani triboelectrostatic lamba olekanitsa amapereka mphamvu otsika, mtengo wotsika njira zochepetsera matope ofiira m'badwo. ndondomeko yathu othandiza pa kulekanitsa mchere ndi zitsulo ores amene kokha kukwaniritsa kale kudzera flotation (yonyowa) njira. The sukulu osiyana zipangizo umatulutsa akhoza kukhala gwero pankhani ya zachuma chifukwa migodi panopa popanga kapena processing bauxite. The STET ndi otsika mtengo opaleshoni, mlingo mkulu zokhazokha madzi ndi mankhwala ufulu, kupangitsa kwambiri wochezeka.
separators wathu Angagwiritsidwenso ntchito pa malo pa migodi, kuchotsa kufunika (ndi mtengo) mayendedwe a kalasi bauxite otsika. Mkulu-Mwachangu, Mipikisano gawo ndondomeko angakhale naco buku mkulu wa zinthu popanda kugwiritsa ntchito mphamvu zambiri, kupereka makasitomala athu ndi kuchepetsa zida poizoni ndi zikanavulaza (matope ofiira), ndi linanena bungwe wamkulu zipangizo wapatali kuti kalero analekerera, ndi otsika opaleshoni / ndalama pamwamba.
STET wonyada kupereka bwino ndi mkulu-mtengo yankho likuwonjezekabe vuto dziko matope ofiira komanso kupereka kwambiri ukapitawo zachilengedwe. Tiyeni tisunge ntchito limodzi kuti dzikoli likhale malo abwino kwa aliyense.
