w = ∆m ∆mtheory × 100% (1) where ∆m and ∆mtheory are the measured weight gain and the theoretical weight gain for complete oxidation, respectively. ∆mtheory is calculated based on the FeO content from
Hydrogen is the main reducing agent for high reactivity and for the elimination of carbon dioxide release in this ironmaking process. The direct use of concentrates allows bypassing the problematic pelletization/sintering and cokemaking steps in the steel industry. Intrinsic kinetics of the suspension ...
Huang XW, Beaudoin G (2019) Textures and chemical compositions of magnetite from iron oxide copper-gold (IOCG) and Kiruna-type iron oxide-apatite deposits and their implications for ore genesis and magnetite classification schemes. Econ Geol 114:953–979 Article Google Scholar Jacobsen JK, Veksl...
These rocks are the primary source of iron ores for the steel industry, but they are also essential repositories of geological information on depositional conditions and ancient seawater composition. Knowledge of these rocks impacts not only geological models of Earth evolution, but it is also ...
Magnetite-apatite deposits are important sources of iron and other metals. A prominent example are the magnetite lavas at the El Laco volcano, Northern Chile. Their formation processes remain debated. Here, we test the genetic hypothesis that an Fe-rich
green rust, and Fe(II)-containing clays1,2,8,9,10,11,12,13,14,15,16are responsible for U(VI) reduction in ore deposits, anoxic aquifers, and marine sediments. Iron(II)-bearing minerals have gained attention also due to their importance in nuclear waste disposal where steel corrosion prod...
In general, pelletization of iron ore is a process where the feed is a mixture of high-grade hematite/magnetite ore mixed with binder and coke breeze as additives to form pellets for the production of iron and steel [5]. Such types of initiatives can eradicate the crises of high-grade ...
This paper documents element mobility patterns from a magnetite-group Iron Oxide Copper–Gold (IOCG) prospect in the Northwest Territories of Canada and explores implications for space–time chemical evolution of metasomatic systems hosting IOCG deposits. The Fab system, located in the Great Bear magma...
In this work, a production process is proposed that uses high-volatile lignite coal to perform carbon‒hydrogen composite reduction of vanadium‒titanium magnetite (VTM) in response to the current trend of low carbon and green development in the steel industry. The reduction sequence and degree...
1. A process for producing iron-ore oxidized pellets from magnetite concentrate, comprising the steps of: adding to said magnetite concentrate at least one calcium compound selected from the group consisting of slaked lime, quicklime, limestone and mixtures thereof, to basicity of 1 to 5; ...