Tham khảo tài liệu 'heat analysis and thermodynamic effects part 9', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Gas-Solid Flow Applications for Powder Handling in Industrial Furnaces Operations 229 collect is send to a cement plant reducing the consumption of charcoal in the cement s process. Fig. 16. Dust discharging at Albras bake furnace implemented solution in the left side in the center discharge of dust in big bags free falling of dust in truck in the right - source Albras Alumínio Brasileiro SA. Fig. 17. Computer screen of a pneumatic conveying system in dilute phase at Albras aluminum smelter - source Vasconcelos Mesquita 2003 . 8. Air fluidized conveyor It was developed a non-conventional air slide called air fluidized conveyor to be of low weight non-electrical conductor heat resistant easy to install maintain and also operates at a very low cost compared with the conventional air slides. Figure 18 shows in the left a conventional air slide with rectangular shape with one inlet and one outlet and in the right the round air fluidized conveyor with possibility to have multiples outlets. 230 Heat Analysis and Thermodynamic Effects Fig. 18. The Albras aluminum smelter air fluidized conveyor and a conventional air slide in the left. Predict and experimental results of the air fluidized conveyor for fluoride alumina The properties calculated and obtained from experiments with alumina fluoride used at Albras aluminum smelter are summarized in table 2. Material property value Specific gravity Non- aerated vibrated bulk density - kg m3 1000 Aerated bulk density at V mf - kg m3 Aerated bulk density at V mf - kg m3 Aerated bulk density at V mf - kg m3 Aerated bulk density at V mf - kg m3 Aerated bulk density at Vmf - kg m3 Aerated bulk density at V mf - kg m3 Aerated bulk density at V mf - kg m3 Minimum fluidization velocity by Ergun equation cm s Minimum fluidization velocity - experimental cm s Mean particle diameter - 11 11 Non- aerated angle of repose - 35 Non- aerated
