ore leaching silicate

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Zinc Silicate and Carbonate Leaching Process

Achieve efficient zinc recovery from ores that are not suitable for conventional processing A significant part of the world's zinc reserves are in the form of zinc carbonate, often containing zinc silicate Outotec's zinc silicate and carbonate leaching process provides high zinc recovery while still controlling silicon leaching and the ....

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WO2002072896A1

The invention relates to a method for the leaching of oxidized ores and in particular zinc or The ore, wherein the valuable metals are at least partially in silicate form, are routed to an acidic leaching stage in conditions where the silicate decomposes and the valuable metal ion comes into the solution During leaching the silicate ion first dissolves, but simultaneously decomposes and is ....

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Elements from Mongolian Apatite

leaching process for selective removal of Ca were studied The specific objectives were to examine the mineralogical characteristics of the sample, determine the effects of the acid type and concentration, temperature, and the pH on the leaching efficiency, and assess the optimum conditions of the leaching process for this apatite-based ore 2...

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Column Bioleaching of a Low

The bioleaching of a low-grade Indian uraninite ore (triuranium octoxide, U 3 O 8 : 0024%), containing ferro-silicate and magnetite as the major phases, and hematite and pyrite in minor amounts ....

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Lateritic nickel ore deposits

Limonite type laterites (or oxide type) are highly enriched in iron due to very strong leaching of magnesium and silica They consist largely of goethite and contain 1-2% nickel incorporated in goethite Absence of the limonite zone in the ore deposits is due to erosion Silicate type (or saprolite type) nickel ore formed beneath the limonite ....

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Kinetics of Sulfuric Acid Leaching of Low

The results of a leaching kinetics study of low-grade zinc silicate ore with sulfuric acid are presented Effect of ore particle size, reaction temperature, and acid concentration on zinc ....

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In situ leach

In-situ leach mining involves pumping of a lixiviant into the ore body via a borehole, which circulates through the porous rock dissolving the ore and is extracted via a second borehole The lixiviant varies according to the ore deposit: for salt deposits the leachate ,...

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Silicate Ore Leach Plant

The Silicate Ore Leach Plant is a copper and silica mine located in Pinal county, Arizona at an elevation of 2,001 feet Premium members have access to Google dynamic maps Please consider becoming a member Our valued business partners make this work possible Become a partner...

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Copper processing

Copper processing - Copper processing - Ores: Principal forms in which copper ores are found include native copper, porphyry copper, massive deposits, and mixed or Native copper is simply the metal found unadulterated in nature Occasionally copper is still found in its native form, but more frequently it is mixed with other minerals, some of which may have value themselv The amount of ....

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Kinetics of sulfuric acid leaching of low

Apr 01, 2000· Kinetics of sulfuric acid leaching of low-grade zinc silicate ore Kinetics of sulfuric acid leaching of low-grade zinc silicate ore Abdel-Aal, EA 2000-04-01 00:00:00 The results of a leaching kinetics study of low-grade zinc silicate ore with sulfuric acid are presented Effect of ore particle size, reaction temperature, and acid concentration on zinc dissolution rate were determined...

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US6312500B1

A process is provided for heap leaching ore to recover nickel The process is particularly effective for ores that have a tangible clay component (ie, greater than about 10% by weight) The process includes sizing the ore (where necessary), forming pellets by contacting ore with a lixiviant and agglomerating The pellets are formed into a heap and leached with sulfuric acid to extract the ....

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NIOSHTIC

The US Bureau of Mines investigated calcium fluoride (caf2) assisted sulfuric acid (h2so4) leaching as an alternative to the melting-quenching procedure to obtain mn from domestic manganese silicate resourc Pyroxmangite [(mn, fe) sio3] ore containing, in percent, 344 Mn, 228 Si, 26 Ca, and 13 Fe was leached in a 500- ml resin kettle...

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Zinc Silicate and Carbonate Leaching Process

Zinc Silicate and Carbonate Leaching Process; Outotec® Zinc Silicate and Carbonate Leaching Process Achieve efficient zinc recovery from ores that are not suitable for conventional processing A significant part of the world's zinc reserves are in the form of zinc carbonate, often containing zinc silicate...

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US4070260A

A process of leaching silicated zinc ores with sulfuric acid in which the ore is reacted at elevated temperature with at least a stoichiometric amount of sulfuric acid, treating products of the reaction with a predetermined quantity of hot water, filtering the zinc sulfate solution from precipitated silica, washing with a further predetermined quantity of hot water (the total amount of hot ....

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Leaching of a complex sulfidic, silicate

This paper reports an acid leaching process study on the selective extraction of base metals from complex sulfidic, silicate-containing zinc ore containing sphalerite, hemimorphite, smithsonite, quartz, galena, pyrite, troilite, muscovite, calcium aluminate, calcite, gypsum and cerussite with traces of other minerals under oxygen pressure...

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Hydrometallurgical Processing of Low

leaching of ores from mines and processing plants as well as waste ores from dumps and further processing by solvent extraction and electrowinning (SX/EW) [16] Biological leaching was proved to be efficient for sulfides of Co, Ga, Mo, Ni, Zn, and Pb [16]...

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Leaching Manganese

A dual leaching system consisting of leaching the manganese out of the ore with aqueous SO2 followed by leaching the silver with cyanide (after flushing with NaOH or lime to remove any acid) appeared promising for greatly increasing silver recovery as well as providing salable manganese...

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LEACHING Zn FROM THE LOW

However, alkaline leaching processing is often confronted with the problem of low-grade complex ores, especially zinc silicate The low solubility of these ores does not usually allow for the recovery of the target metal, even by direct chemical leaching in many leaching reagents (Zhao et al, 2009)...

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US3880981A

A hot solution of sulfuric acid and ammonium bisulfate is used to leach nickel and cobalt from finely ground, low grade nickel ores such as garnierite Substantial quantities of iron and magnesium impurities pass into the leach liquor The leach liquor is cyclically filtered, adjusted to its original acid content, and reused with a fresh batch of ore until the magnesium content is about 40-60 ....

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Copper extraction

Copper extraction refers to the methods used to obtain copper from its orThe conversion of copper consists of a series of physical and electrochemical process Methods have evolved and vary with country depending on the ore source, local environmental regulations, and other factors...

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nickel Ore

Jan 28, 2016· NICKEL LATERITE PROCESSING Atmospheric leaching F E E D Oxide ore (but, potentially, any ore type, including low grade hydrous silicate) P R O C E E S S Heat and leach H2SO4 Ore preparation Acid plant or excess from HPAL S Energy Wash/neutralize SX-EW or precipitate P R O D U C T Ni (Co) hydroxide ~80-90% recovery Ravensthorpe, Gag Island ....

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