We demonstrated that reductive degradation of hexahydro-1,3,5-trinitro-1,3,5-triazine (Royal Demolition Explosive, RDX) can be enhanced by bio-reduced iron-bearing soil minerals (IBSMs) using Shewanella putrefaciens CN32 (CN32). The highest rate constant was obtained by bio-reduced lepidocrocite (0.1811 h-1) during RDX degradation, followed by magnetite (0.1700 h-1), green rust (0.0757 h-1), he...

An X-ray diffraction (XRD) analysis was conducted after separating clay particles from three shards, to analyze the production technique of black pottery excavated a historical site ancient Baekje in Seoul, South Korea. Through analysis, minerals and iron oxides that were not recognized XRD patterns bulk powder samples identified. A type with blackened portion surface margin core estimated have...

The Conceição mine, which is located in the Itabira district, southern São Francisco craton, is a rare example of gold and palladium mineralization hosted by jacutinga, an altered Lake Superior-type iron-formation. The mine sequence consists of three metamorphosed lithostratigraphic units, which are from the oldest to the youngest: (1) an Archean volcanosedimentary sequence, (2) a Paleoproteroz...

Depletion of high-grade iron ore resources leads to increasing use concentrates as raw materials for sinter. One the methods effectively utilize such is Mosaic EmBedding Iron Ore Sintering (MEBIOS), which pre-granulated green pellets are charged into sintering bed with mixture other materials. In this study, effects type and gangue mineral components on strength sintered pellet prepared fine we...

The high-temperature oxidation of hot-work tool steel AISI H11 was studied. investigated in two conditions, the soft annealed condition, and hardened tempered condition. First, calculations compositions oxide layers formed were carried out using CALPHAD method. samples oxidised a chamber furnace simultaneous thermal analysis instrument, for 100 h temperature range between 400 °C 700 °C. first u...