Chromite chinhu chakakosha pakunyungudutsa ferroalloys, Stainless simbi uye alloys anokosha. Indasitiri yemetallurgical inoshandisa inenge 60% yechromium, iyo inonyanya kushandiswa kugadzira alloy simbi, kunyanya simbi isina tsvina. Panguva imwecheteyo, chromite inoshandiswa zvakanyanya muindastiri refractory, indasitiri yemakemikari uye indasitiri yemwenje.
Ore properties
Kune anopfuura makumi mashanu emhando dzemaminerari ane chromium anowanikwa mune zvakasikwa, asi iyo chete chromium-ine zvicherwa zvine kukosha kwemaindasitiri ndeye chromite, ayo ari spinel (MgO, Al2O3), magnesia chromite (MgO, Cr2O3), uye magnetite. (FeO, Fe2O3) uye mamwe magadzirirwo akasimba. Tichifunga, kemikari yekromite inonzi FeO, Cr2O3, ine 68% Cr2O3, 32% FeO, yepakati magineti, density 4.1 ~ 4.7g/cm3, Mohs kuoma 5.5 ~ 6.5, uye kutaridzika kwepamusoro kunotangira kubva kune dema kusvika kune yakasviba. Gangue zvicherwa zvinonyanya kusanganisira olivine, serpentine uye pyroxene, dzimwe nguva inoperekedzwa nehuwandu hushoma hwevanadium, nickel, cobalt uye molybdenum boka zvinhu.
Processing Technology
Zviwanikwa zveChina zvechromite zvine hurombo, zvakanyanya kutarisana neTibet, Xinjiang, Inner Mongolia, Gansu nemamwe mapurovhinzi. Zvekune dzimwe nyika chromite zviwanikwa zvinonyanya kugoverwa muSouth Africa, Russia, Brazil, United States nedzimwe nyika. Chromite ine hunhu hwehupamhi hwepamusoro, epakati magineti uye coarse crystal particles. Kazhinji, inorongedzerwa nekugeza ore, isina simba remagineti kupatsanurwa, yepakati yakasimba magineti kupatsanurwa, kupatsanurwa kwegiravhiti, flotation uye mamwe maitiro.
Washing method
Iyo yakakodzera kune yakakora-grained chromite ore ine yakakwira giredhi yeore mbishi uye kunyanya ivhu-rakafanana nedhaka rakanaka setsvina. Yakakodzera coarse concentrate zvigadzirwa zvinogona kusarudzwa nekugeza nyore.
Magnetic kupatsanurwa
Chromite ine epakati magineti zvivakwa uye inogona kupatsanurwa nekuoma kana kunyorova kwakasimba kwemagineti kuparadzaniswa. Iyo yakabatana magnetite inotanga kupatsanurwa neasina simba remagineti, uye ipapo magineti yakaparadzaniswa neCXJ kana CFLJ, ndiro yemagineti separator, vertical ring high gradient magineti separator, etc. Iyo midziyo inoita yakaoma uye yakanyorova beneficiation, uye inogona kusarudza vanokwanisa kuisa pfungwa zvigadzirwa. Iyo magineti yekuparadzanisa nzira ine zvakanakira yehukuru hwekugadzirisa masimba uye yakagadzikana zviratidzo.
South Africa chromite application saiti
Heavy media kurongedza
Iyo chaiyo giravhiti yechromite ndeye 4.1 ~ 4.7g / cm3, uye iyo chaiyo giravhiti yeakabatana gangue uye iron silicate zvicherwa kazhinji 2.7 ~ 3.2g/cm3. Kutora mukana wemusiyano mukuwanda pakati pezvicherwa, spiral chute, jigging, tafura yekuzunza, spiral beneficiation inogona kushandiswa Machina, centrifuges uye zvimwe zvinorema zvekurongedza midziyo yekurongedza. Iyi nzira inokodzera chromite ine coarser crystal saizi yezviyo, uye zvidimbu zvakanaka zvinorasika zviri nyore mumaswe.
Flotation
Chromite inogona kushandisa mafuta asidhi kana amine vaunganidzi kuti vasarudze vanokwanisa kutarisisa kuburikidza nekuita roughing uye kutsvaira pasi pemamiriro epH akakodzera. Inokodzera makromite akaisvonaka-grained uye akanaka-grained.
Chemical Beneficiation
Kune mamwe ma chrome ores ayo akaoma kugadziridzwa nemechanical beficiation nzira, iyo beneficiation-kemikari yakasanganiswa maitiro kana imwe nzira yemakemikari inogamuchirwa. Kemikari inobatsira nzira dzinosanganisira: kusarudza leaching, redox, kupatsanurwa kwefuse, sulfuric acid uye chromic acid leaching, kuderedza uye sulfuric acid leaching, nezvimwe.
Beneficiation muenzaniso
Giredhi reCr2O3 riri mune imwe chromite muswe muSouth Africa i24.80%. Iri pa-saiti chute re-sarudzo tailings. Saizi yemuenzaniso ndeye -40 mesh uye saizi yechikamu inofanana. Iyo chromite iripo mune yakanaka particles uye contiguous miviri uye inclusions. Iyo huru gangue minerals Ndiyo olivine uye pyroxene, ine zvishoma zvishoma zvevhu rakanaka. Zvinoenderana nechimiro cheore samples, iyo beneficiation process inotangwa seyakadzika kana yakatwasuka mhete imwe-nhanho roughing.
Iyo yakanaka-yakaomeswa chromite iri mumashure eiyo pa-saiti chute giravhiti kupatsanurwa inotora furati ndiro kana vertical mhete yakasimba yemagineti yekuparadzanisa maitiro, anogona kusarudza akakodzera anonangana zvigadzirwa. Iwo maminerari ane chromium mune magineti muswe akanyatso-grained inclusions kana mamwe asina Kukosha chromium-ine zvicherwa akawana zvakanaka zviratidzo zvekubatsira.
Nguva yekutumira: Oct-12-2021