The xanthates of some low-molecular-weight alcohols are used as flotation agents for the concentration of ores.
Hydrogen cyanide and its compounds are used for many chemical processes, including fumigation, the case hardening of iron and steel, electroplating, and the concentration of ores.
Cyanides are used in many chemical processes, including fumigation, case hardening of iron and steel, electroplating, and the concentration of ores.
Therefore, advances in the research of hydrothermal systems are of significant importance in the understanding of tectonic activities, the formation and distribution of geothermal resources, water-rock interactions, and the concentration of ore-forming elements (Wang et al. [1981]).
... ..Mars may have concentrated mineral ores, with much greater concentrations of ores of precious metals readily available than is currently the case on Earth due to the fact that the terrestrial ores have been heavily scavenged by humans for the past 5000 years.
Decisions about where to place mines are difficult because silver ore is hidden underground, and even once extracted from bedrock the concentration of silver ore can only be accurately discovered through assaying techniques.
Within this perspective, a test campaign for laboratorial mineral concentration was set up, in order to determine the main variables (and their interactions) that may have an influence on the concentration of iron ore from the Quadrilátero Ferrífero by the jigging process.
There are doubts among scientists as to whether or not the hydrogen is in the form of ice, as well as to the concentration of this "ore" with depth below the surface.
For this reason hydrochloric acid is used extensively in the industrial processing of metals and in the concentration of some ores.
