Impact of waste fuels (virgin/waste wood, mixed biofuel (peat, bark, wood chips) industrial, household, mixed waste fuel) and incineration technologies on partitioning and leaching behavior of trace elements has been investigated. Study included 4 grate fired and 9 fluidized boilers. Results showed that mixed waste incineration mostly caused increased transfer of trace elements to fly ash; part...

Leather processing is an important industry in China, and the discharge of chromium waste has been severely circumscribed. Though traditional processes for treating chromium waste have been widely used in tannery plants, technology adopting high efficiency and economic simultaneously is deficient. In order to develop an economic treatment for tannery waste, a mixed alkali of sodium hydroxide an...

In this study an integrated process is presented as a suitable method to transform Fe3+ oxides present in bauxite residue into magnetic and metallic iron through microwave roasting reduction, avoiding the formation of hercynite (FeAl2O4). first step, all alumina phases were transformed sodium aluminates by adding carbonate flux BR then leached out alkali-leaching recover alumina. Subsequently, ...

Abstract Leaching titaniferous magnetite concentrate with alkali solution of high concentration under temperature and pressure was utilized to improve the grade iron in TiO 2 titanium tailings. The use contained 12.67% 54.01% Fe. thermodynamics possible reactions kinetics leaching process were analyzed. It found that decomposing FeTiO 3 NaOH aqueous could be carried out spontaneously reaction r...

A research using ferronickel slag, the by-product of production, as raw material for magnesium extraction was carried out. It is essential to upgrade value slag instead used directly reclamation materials. Moreover, accumulation due increasing demand well environmental contamination various potentially toxic elements contained in could be prevented. The general objective this study utilize spec...