Zabi Harshe:
Tama ne na huɗu ya fi na kowa kashi a duniya ta ɓawon burodi. Iron yana da muhimmanci ga karfe masana'antu da haka wani muhimmanci abu don duniya ci gaban tattalin arziki. Iron ne ma amfani da ko'ina a yi da masana'antu na motocin. Mai tama albarkatun an hada da metamorphosed hada baki da baƙin ƙarfe tsarin (BIF) a cikin abin da baƙin ƙarfe ne fiye samu a cikin nau'i na oxides, hydroxides da wani karami har carbonates.
A sunadarai abun da ke ciki na baƙin ƙarfe ores yana da wani fili fadi da kewayon a sinadaran abun da ke ciki musamman domin Fe abun ciki da kuma hade gangue ma'adanai. Major baƙin ƙarfe ma'adanai dangantawa da mafi yawan baƙin ƙarfe ores ne hematite, goethite, limonite da magnetite. Babban abin gurɓatawa a cikin baƙin ƙarfe ores ne SiO2 da Al2O3. Da hankula silica da kuma alumina hali ma'adanai ba a cikin baƙin ƙarfe ores ne ma'adini, kaolinite, gibbsite, diaspore da corundum. Daga cikin wadannan shi ne sau da yawa lura cewa ma'adini ne babban silica hali ma'adinai da kuma kaolinite da gibbsite ne biyu-main alumina hali ma'adanai.
Tama da hakar ne yafi yin ta hanyar bude rami hakar ma'adinai ayyukan, sakamakon gagarumin tailings ƙarni. A Karafa samarwa tsarin ya unshi matakai uku: hako ma'adinai, aiki da kuma pelletizing ayyuka. daga cikin wadannan, aiki na tabbatar da cewa wani isasshen baƙin ƙarfe sa da kuma sunadarai aka samu kafin a pelletizing mataki. Processing hada da crushing, rarrabuwa, milling, and concentration aiming at increasing the iron content while reducing the amount of gangue minerals. Kowane ma'adinai ajiya na da musamman halaye game da baƙin ƙarfe, da gangue qazanta ma'adanai, sabili da haka shi bukatar wani daban-daban taro dabara.
Magnetic separation is typically used in high-grade iron ore beneficiation where the dominant iron minerals are ferro and paramagnetic. Rigar da bushe low-tsanani Magnetic rabuwa (LIMS) dabaru ana amfani da su aiwatar ores da karfi Magnetic Properties kamar magnetite yayin da rigar high-tsanani Magnetic rabuwa da ake amfani da su raba tsakanin Fe-qazanta ma'adanai da rauni Magnetic Properties kamar hematite daga gangue ma'adanai. Iron ores irin goethite da limonite ake yawan samu a tailings kuma ba ya ware sosai da ko dai dabara.
Flotation da ake amfani da su rage abun ciki na impurities a low-sa ƙarfe ores. Iron ores za a iya mayar da hankali ko dai ta kai tsaye anionic flotation na baƙin ƙarfe oxides ko baya cationic flotation na silica, duk da haka baya cationic flotation ya kasance mafi m flotation hanya amfani a cikin baƙin ƙarfe masana'antu. A amfani da flotation ta iyakance ta da kudin da reagents, gaban silica da kuma alumina-arziki slimes da kuma gaban carbonate ma'adanai. Haka kuma, flotation bukatar sharar gida da ruwa da magani da kuma yin amfani da nisa da tushe dewatering for bushe karshe aikace-aikace.
A amfani da flotation ga taro na baƙin ƙarfe ma ya shafi desliming kamar iyo a gaban tarar sakamakon a rage yadda ya dace da kuma high reagent halin kaka. Desliming ne musamman m ga kau da alumina kamar yadda rabuwar gibbsite daga hematite ko goethite da wani surface-aiki jamiái ne quite wuya. Mafi yawa daga alumina hali ma'adanai auku a cikin finer size kewayon (<20wani) domin kyale ta kau saboda desliming. overall, wani babban taro na tara (<20wani) da kuma alumina qara bukata cationic harajin kashi da kuma rage-rage selectivity da cika fuska. Saboda haka desliming ƙaruwa flotation dace, amma sakamakon a wani manyan girma na tailings kuma a cikin hasara na baƙin ƙarfe da tailings jera.
Dry aiki tama gabatar da wata dama don kawar da halin kaka da kuma rigar tailings tsara dangantawa da flotation da kuma rigar Magnetic rabuwa haihuwarka. STET ya kimanta da dama da Karafa tailings da gudu na mine tama samfurori a benci sikelin (pre-yiwuwa sikelin). Muhimmanci motsi na baƙin ƙarfe ne da silicates aka lura, tare da misalai alama a tebur a kasa.
A sakamakon wannan binciken ya nuna cewa low-sa tama tarar za a iya kyautata ta wajen STET tribo-electrostatic bel SEPARATOR. Bisa STET kwarewa, da samfurin dawo da kuma / ko sa zai muhimmanci inganta a matukin jirgi sikelin aiki, kamar yadda idan aka kwatanta da benci-sikelin gwajin na'urar amfani a lokacin da wadannan tama gwaji.
The STET dry electrostatic fine iron ore separation process offers many advantages over traditional wet processing methods, kamar magnetics ko flotation, ciki har da:
Contact mu koyi game da bushe aiki tama.
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