Ohio has substantial lands impacted by surface mining for coal and an active steel industry. Steel industry slags have been used as liming compounds for agriculture and acid mine soil reclamation. This 3-year study evaluates slags from Ohio steel mills in greenhouse trials where these materials are compared to reagent grade CaCO 3 in their ability to improve plant growth on acid mine soil. The ...

Pyro-metallurgy of copper production is characterized by the output slag, which regarded as a kind solid waste. Moreover, this slag identified hazardous because it contains impurities, like Pb, As, and Cu. Obtaining dump slags in autogenous processes does not always meet requirements effective technologies, most often contain more than 1.0% need to be depleted. This work presented brief analysi...

This study was conducted in order to evaluate the effects of long term ageing on toughness and resilient modulus of asphalt concrete mixtures containing Electric Arc and Basic Oxygen Furnace steel slags. After initial evaluation of the properties of steel slags using X-ray Diffraction and Scanning Electric Microscope, eleven sets of laboratory mixtures were prepared. Each set was treated replac...

Mineralogical analysis and laboratory-based leaching tests coupled with speciation modeling were undertaken to quantify the potential for short-term acid generation release of trace elements from soils heavily contaminated mine waste at Rio Tinto. Three different materials considered as case studies: roasted pyrite, copper slags, leached sulfide ores. The results showed elevated values net (up ...

Electronic goods are a major consumer of many critical metals, including copper, nickel, tin, zinc, lead, and precious metals. The processing end-of-life electronic equipment (E-Scrap) is becoming increasingly important to maintain the supply metals required globally, reduce environmental pollution. Currently, dominant route for E-Scrap pyrometallurgical processing, with first stage being reduc...

This research investigated the possibility of using metallurgical slags from copper and lead industries as partial replacement for cement. The studied were fayalitic, having a mainly ferro-silicate composition with minor contents Al2O3 CaO. treated at 1200–1300 °C (to reduce heavy metal content) then granulated in water to promote formation reactive phases. A full hydration study was carried ou...