·To answer these questions in this paper we investigate the effect of different sulfate and iron containing additives on the hydrothermal reaction of Na 2 WO 4 and HCl Namely Na 2 SO 4 FeSO 4 Mohr s salt NH 4 2 Fe SO 4 2 ammonium iron alum [NH 4 Fe SO 4 2] and FeCl 3 were applied as co reagents Besides we studied the role of oxalic acid and the
·The preparation of iron oxide nanomaterials has broad application prospects Literature evidence shows that if the deposition potential and electrolyte composition are changed it will significantly affect the film forming properties of magnetic nanoparticles and then affect the characteristics of the particles [ 66 ]
·The preparation of iron tailings based ceramsite and its application were studied The mass ratio of iron tailings coal gangue was 7 3 and the sintering temperature was 850 ℃ The ceramsite exhibited an increased capacity for adsorbing Pb II and complied with the specifications outlined in the standard following the optimization of the
·Aiming at the problems of the large storage complex composition low comprehensive utilization rate and high environmental impact of coal gangue this paper carried out experimental research on the preparation of iron oxide red from high iron gangue by calcination activation acid leaching extraction and the hydrothermal synthesis of coal gangue
The iron bearing phase in the residue is gradually reduced to metallic iron under the reduction of biochar pyrolysis gas resulting in enhanced iron diffraction peaks Notably fayalite Fe 2 SiO 4 diffraction peaks were observed in the reduction products at 950 °C and 1000 °C but disappeared at 1050 °C indicating further reduction
·The resulting ratio between iron and phosphate of is greater than the molar ratio of for divalent iron and phosphate in Fe 3 PO 4 2 · H 2 O 8 Zhang et al 2022 suggesting that the amount of divalent iron and zero valent iron in the biochar is sufficient to form Fe 3 PO 4 2 · H 2 O 8
·At present around 6 7% of iron ore slimes out of total production are being generated and accumulated at iron ore mine sites of National Mineral Development Corporation Limited India The accumulated slimes of finer size and relatively inferior grade should be utilized in an economical way for sustainable mining These slimes can be agglomerated into micro
·Preparation of Fe 2 O 3 BC 1 using the co precipitation method the straw digestate was pyrolyzed and prepared into BC for use same as the BC preparation condition After immersing BC in mol/L ferric chloride solution and stirring for 12 h 3 mol/L NaOH solution was added until no precipitation was produced The total iron
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