·Red mud is a hazardous material discharged from the industrial production of aluminium Khairul et al 2019 In general the main components of red mud are Fe 2 O 3 10 40 wt% SiO 2 20 40 wt% and Al 2 O 3 5 20 wt% Li et al 2018 Despite the high Fe content in red mud obtaining high grade Fe concentrate via traditional mineral processing methods is
·Fly ash is a combustion by product constituting about 60 88% of total combustion residues from coal fired power plats Globally its annual production is estimated to be between 1 billion tones [1] This quantity is expected to increase in the coming years as demand for cheap power rises in developing countries
·The comprehensive utilization of resources has promoted the circular economy in the mining industry including the development of associated resources the recovery of valuable elements and the
·208 5 Comprehensive Utilization of Fly Ash There has been continual development of comprehensive use of fly ash [1 3] with more application of high technology over the past few years The amount and percent of comprehensive fly ash consumption have enjoyed steady growth with
·This article describes the comprehensive utilization of fly ash in China and against the current situation of large scale coal fired power plants fly ash characteristics factors the significance of
·Fly ash contains active substances with pozzolanic effect such as CaO SiO 2 and Al 2 O 3 etc so it can be used as a mixed material and raw meal for the production of cement or as a concrete admixture instead of fly ash is mixed into cement in addition to the homogenization effect and lubrication effect brought by its own shape the
·Fly ash can also be shaped into pellets and used for the removal of copper and cadmium ions from aqueous solutions [70] The calculated adsorption capacities for copper and cadmium were found to be and mg/g respectively It was found that fly ash shaped into pellets could be considered as a potential adsorbent for the removal of
·MSWI ashes are divided into MSWI bottom ash MSWIBA and MSWIFA And MSWIFA accounts for 20 % of MSWI ash residue Tang et al 2015 During incineration heavy metals or heavy metal chlorides in MSW usually evaporate in the high temperature environment and are subsequently deposited in the crystal lattice of MSWIFA Dou et al
·Fly ash for example can be used as a waste input in 433 six products of construction materials among which cement 434 production bene fi ts most environmentally
·This article explores fly ash a coal combustion byproduct and its potential applications in sustainable engineering Classified as Class F with pozzolanic qualities or Class C with self
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