Local compositional and structural information was obtained from an ancient 1500-yearold Indian iron and its protective scale utilizing microprobe techniques (lXRD and lPIXE). Different locations in the iron matrix and in the entrapped slag inclusions were also analyzed for P contents. The P content of the metallic iron matrix was very heterogeneous. Lower P contents were observed in the region...

The recycling options of spent MgO-C refractories from an electrical arc furnace (EAF) have been evaluated. The economic, quality of spent refractories and products made from it, the ease of implementation of a recycling practice and the interest of steel melt shops were considered. It was decided that the best option of most EAF shops would be to recycle spent MgO-C refractory as a foaming sla...

Inorganic arsenic removal from water using low-cost adsorbents is presented in this paper. Selective removal of As(III) and As(V) from water was performed with natural materials (zeolite, bentonite, sepiolite, pyrolusite and limonite) and industrial by-products (waste filter sand as a water treatment residual and blast furnace slag from steel production); all inexpensive and locally available. ...

Geophysical prospection has been applied in the Hüttenberg area (Carinthia, Austria), where important parts of the Roman iron production in the province of Noricum between the first century bc and the fourth century ad are located. A combination of geomagnetic, geoelectric and electromagnetic measurements at different scales yielded information about the extent of the industrial complex and the...

The combustion characteristics of pulverized coal when using blast furnace slag charged with iron ore containing rare earth elements as a composite catalyst were investigated by thermo gravimetric analysis. The results show that the combustion char acteristics of pulverized coal loaded with 21.3% by weight of blast furnace slag containing 15% rare earth ore are better than those of others. It i...

Two oxygen carriers were tested with respect to chemical looping combustion (CLC) and gasification (CLG). Ilmenite, a natural ore composed mainly of iron–titanium oxide, LD Slag, an iron-based industrial waste, investigated at 850 900 °C in continuous operation 0.3 kW chemical-looping reactor system using synthetic biomass volatiles as fuel. CLC CLG conditions simulated the fuel by changing flo...

Slag-containing pastes and concretes were analysed by element-specific synchrotron-based techniques to determine the speciation of iron on crushed materials through spatially resolved micro-spectroscopic studies. The investigated cement samples hydrated either in laboratory, or exposed river sea water. Metallic iron, along with minor proportions sulphide magnetite was detected laboratory sample...

The state of deadman in hearth is important for the long campaign life blast furnace (BF). In order to clarify influence on sidewall erosion, corresponding relationship between shape and erosion was studied, fundamental reason difference analyzed, mechanism slag-coke interface iron-coke coke explored based phase distribution deadman. results show that: circumferential bulge at root a common fea...