Characterization and Pyrometallurgical Removal of Arsenic from Copper Concentrate Roasting Dust
نویسندگان
چکیده
This paper describes the experimental results of removing arsenic from dust collected in electrostatic precipitators a fluidized bed roasting furnace (RP dust). The process generates 600 kilotons copper concentrate per year with 3 - 6 wt% concentration arsenic, producing roasted product low content below 0.3 wt%. 27 RP order 5 and around 20 Subsequently, is treated by hydrometallurgical methods allowing recovery copper, disposition as scorodite. work proposes to use pyrometallurgy volatilization dust. obtained material can be recirculated smelting furnaces valuable metals. set experiments carried out mixture concentrate/RP sulfur/RP used different ratios mixtures, temperatures times. By techniques, characterization determined its size distribution, morphology, chemical mineralogical composition. composite small particles (<5 μm) 50 μm agglomerates, mostly amorphous, complex composition sulfoxides. indicated that for 75/25 weight ratio concentrate/PR under 700℃, 15 minutes time injection air, reached 96% weight. after less than 0.3% For 5/95 dust, at 650℃, promissory result 67%. Even this study was particular operation, have potential extended produced concentrates nickel, lead-zinc, gold.
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ژورنال
عنوان ژورنال: Journal of Minerals and Materials Characterization and Engineering
سال: 2021
ISSN: ['2327-4077', '2327-4085']
DOI: https://doi.org/10.4236/jmmce.2021.96039