leaching


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Related to leaching: Heap leaching
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Synonyms for leaching

the process of leaching

References in periodicals archive ?
The research and development program has the potential to benefit the mining industry more broadly in South Australia, as heap leaching has the potential to deliver lower capital and operating costs, increased scalability, reduced potable water use and the ability to process lower-grade ores.
Following that announcement, gold recovery from the leach pad increasingly exceeded expectations, and the company then focused test work and analysis on the viability of resuming mining and heap leaching.
The factors driving spatial variability of N leaching in the catchment will be studied using porous cup methods for N leaching measurement, detailed information on past crop management, conductivity and Gamma-Radiometer soil sensors to map soil properties, and Digital Elevation Models (DEM), all integrated using the latest Digital Soil Mapping (DSM) techniques.
used nuclear magnetic resonance (NMR) scanning to study the relationship between the pore size distribution and the weakening of the intensity of ion-adsorption rare earth leaching processes, thereby revealing the mechanism through which the ore body strength becomes weakened during leaching [17, 18].
Considering the environmental pollution caused by uranium-bearing coals and the potential economic value of the uranium in the coals, leaching uranium from the uranium-bearing coals such as lignite can efficiently reduce the radiation pollution and brings economic benefits.
niger medium containing acidified mango peel substrate at 28AdegC after 36days of leaching at 120 rpm.
The study investigated the cumulative leaching release characteristics of antimony smelting slag, the impact of particle size, solid-liquid ratio, pH, the effects of the rainfall intensity, and rainfall duration.
Keywords: Electric arc furnace dust, Sulphuric acid, Leaching, Sustainable environment, Zn recovery.
Both nitrate and ammonium forms of nitrogen, common forms of nitrogen in the soil are lost through leaching. When water percolates in the soil, nitrate forms leach with water, whereas ammonium forms adsorbed to negatively charged soil clay lattice; so that ammonium forms leach less [5, 15].
Recent test work has further optimized the organic acid leaching process, which has achieved nickel extraction of up to 98% from the saprolite material after less than 30 minutes.
This hydrometallurgical method consists of leaching galena synthetic mixtures or concentrates in waste fluosilicic acid ([H.sub.2] [SiF.sub.6]) with hydrogen peroxide ([H.sub.2] [O.sub.2]) and lead dioxide (Pb[O.sub.2]) as oxidants at 95[degrees], electrowinning the ([PbSiF.sub.6]) solution at 35[degrees] to produce 99,99% Pb metal, and solvent extraction to recover S, leaving a residue containing eventually present Cu, Ag, and other metal values.
has obtained a patent for a process of making titanium dioxide particles, comprised of forming a slurry comprising particles and a phosphate-containing agent, the particles comprising titanium dioxide and alumina; milling the slurry to form a homogeneous dispersion comprised of milled particles; leaching the alumina off of the milled particles to form leached particles in a leached dispersion; treating the leached dispersion under conditions to react the leached alumina with the phosphate-containing agent to form aluminum phosphate and to coat the leached particles with the aluminum phosphate and form a slurry of coated particles.
Bacterial leaching of metal sulphides apparently requires the attachment of bacterial cells to metal sulfides.
The aim of this work is to describe the new complex of aluminium discovered in the organic substance of selected bituminous and brown coals and their fractions through analysis of the solid phases of leaches and the solid residues after leaching. The leaches and residues were obtained by long-term leaching of coals and their separates using 2-methoxyethanol in some experiments while carbon tetrachloride in the others.
"It's so resistant to leaching, and while not quite inert, it can hold up really well," says George Pauley, a research scientist with the FDA's Office of Food Additive Safety.