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- W2318402512 abstract "Recently petroleum coke is used as boiler fuel and residuesof the combustion are collected by electrostatic precipitators. About 80% of the electrostatic precipitatorsoot (EP soot) is combustible, and the remaining 20% is non-combustible compounds containing valuable metals such as vanadium and nickel.The effects of various operating variables on the oil agglomeration of EP soot, such as oil dosage, impeller speed, temperature of suspension, and time ofagglomeration on yield and ash content of the products were studied in a laboratory batch agglomeration cell. Theyield increases and the ash content of the agglomerates decreases with increasing oil dosage, impeller speed and time of agglomeration. From the results, it was concluded that a high energy consumption is required to recover low ash content agglomerates with high yields.Wet sieve analysis indicated that the ash content of EP soot increases with decreases in particle size. This was simulated using the equation derived from a model of petroleum coke combustion. Separation efficiency of unburned carbon and ash by size fractionation, using laboratory sieves, was higher than that of oil agglomeration. X-ray diffraction patterns of the feed revealed that most peaks are consistent with metal compounds such as FeV2O4, Fe2SiO4, NiFe2O4, MgFeAlO4, NiSO4·2H2O, and CaV2O6. Wet magnetic separation was conducted on the-400 mesh sample containing 53.8% ash. Semiquantitative study of the XRD results showed that in the magnetic fraction FeV2O4, Fe2SiO4, NiFe2O4, and MgFeAlO4contents increase and in the nonmagnetic fraction CaSO4·1/2H2O content increases." @default.
- W2318402512 created "2016-06-24" @default.
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- W2318402512 date "1997-01-01" @default.
- W2318402512 modified "2023-10-18" @default.
- W2318402512 title "Recycling. Recovery of Unburned Carbon and Valuable Metals from Residues of Petroleum Coke Combustion." @default.
- W2318402512 doi "https://doi.org/10.2473/shigentosozai.113.1087" @default.
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