This paper analyzed the activity of coal-based metakaolin and non-coal-based (ordinary metakaolin) commonly used in Chinese market. The content kaolin was detected by XPF. phases kaolin, corresponding alkali-excited reactants were XRD. contents Al (IV), (V) (VI) 27Al NMR. micromorphology observed SEM. water-resistance alkali-activated tested immersion experiment. results showed that a lot corun...

In this work, the feasibility of implementing a waste heat recovery system based on capture radiation emitted from surface rotary kiln is evaluated by coupling CFD analysis and process modelling including mass, energy, exergy balances. It found potential up to 4980 kW with an annulus absorber panel which extends 30 m length reaches average temperature 240 °C. Such could be used generate 864.25 ...

Utilization of biomass char, which is regarded as a carbon neutral fuel, has been discussed to decrease in the dioxide emission from ironmaking processes. However, carbonization usually leads significant loss. In this study, direct use uncarbonized for reduction iron ore was attempted. First, behavior ore-uncarbonized composite examined understand mechanism at elevated temperature. Second, test...

A model for the simulation of timber drying in a batch kiln has been used for the investigation of a set of different questions related to this drying process. The model is global in the sense that it takes into account that the drying air local climate changes as it passes through the kiln load. In Scandinavian, practice kiln stacks are normally built from boards of random lengths so that ever...