Accelerated Carbonation of Mineral Wastes in Fluidized Beds
Fluidization
2019
Fluidization XVI
General Paper Pool
3A: Fundamentals of Fluidization
Tuesday, May 28, 2019 - 9:07am to 9:19am
Minerals with high content of silicate and rich in calcium are known to readily react with carbon dioxide (CO2). The reaction products can cause rapid hardening and derives in the production of aggregate materials which can then be used as construction materials and other valuable purposes. This paper reviews recent developments in this emerging technology and provides an insight in the use of fluidized beds as suited reactors providing good mixing and adapted space-time. The effects of the accelerated carbonation reaction on different solid particles and possible strategies to achieve adequate fluidization such as regulating phase ratios, gas-solid contact and critical film layer are considered here.
References:
Scuzzarella, A, Fernandez Bertos, M, Simons, S J, Hills, Colin and Carey, Paula (2006) Expansion of cohesive gas fluidized binary solid systems. Powder Technology, 163 (1-2). pp. 18-22
Maries, Alan and Hills, Colin (2015) Ultra-rapid hardening of cement by accelerated carbonation – Past, present and future In: 5th International Conference on Accelerated Carbonation for Environmental and Material Engineering 2015 (ACEME). AIChE, New York
Garcia-Trinanes, P., Zigan, S., Necas J. (2016) Assisted fluidization of cohesive powders. I: 22nd International Congress of Chemical and Process Engineering, CHISA 2016 and 19th Conference on Process Integration, Modelling and Optimisation for Energy Saving and Pollution Reduction, PRES 2016