US4236918A - Recovery of elemental sulfur and metal values ...
Process for recovery of copper, molybdenum, gold and elemental sulfur in tailings from hydrometallurgical processing of copper sulfide ores, particularly chalcopyrite. The tailings are usually discarded, and thus the recovery of valuable elements therefrom makes the environmentally desirable hydrometallurgical processes of FIG. 1 economically feasible.
12.3 Primary Copper Smelting
Because copper has a higher affinity for sulfur than oxygen, the copper in the slag (as copper oxide) is converted to copper sulfide. The copper sulfide is removed and the remaining slag is ... Crushing and grinding systems used in ore, flux, and slag processing also contribute to fugitive dust problems.
Mechanochemical sulfidization of a mixed oxide-sulphide ...
Abstract: Mechanochemical sulfidization of a mixed sulfide/oxide copper ore by co-grinding with sulfur and additives including Mg(NO 3) 2 and Fe(NO 3) 3 salts and iron, aluminum and magnesium powders was investigated for the first time. Also, the influence of sulfidization during the wet-milling process was examined on the separation efficiency and recovery of copper in detail.
Copper Mining and Production Processes Explained
Processes: copper mining and production. Copper is found in natural ore deposits around the world. This page explains copper mining: the production route taken from ore-containing rock to a final product that is the highest-purity commercial metal in existence and used in a wide variety of applications essential to modern living.
Copper Smelting - Metallurgist & Mineral Processing Engineer
Copper Smelting Process. In the autogenous system described by this report, sulfide concentrate and silica flux are blown into the furnace through a specially designed burner with oxygen and is flash smelted to about 50-percent copper matte. The matte flows down an inclined crucible, countercurrent to the slag flow, to the converting zone at ...
The oxidation of copper sulfide minerals during grinding ...
In this study, the mechanism which underpins the different interactions of chalcopyrite, a primary copper sulfide mineral, and chalcocite, a secondary copper sulfide mineral, with bentonite, a clay mineral, during the grinding with stainless steel media was investigated by a range of techniques including XPS (X-ray Photoelectron Spectroscopy) analysis, electrokinetic studies and Cryo-SEM ...
How to Process Copper Ore: Beneficiation Methods and ...
Copper ore beneficiation methods. Before the beneficiation of copper ores, crushing and grinding are required. The bulk ores are crushed to about 12cm by a jaw crusher or a cone crusher. Then the crushed materials are sent to the grinding equipment, and the final particle size of the copper ore is reduced to 0.15-0.2mm.
Effect of grinding with sulfur on surface properties and ...
Key words: grinding; nonferrous metal oxides; flotation; sulfur; recycling 1 Introduction Nonferrous metals, such as copper, lead and zinc, are mainly extracted from natural sulfide ores which are the primary nonferrous sources and steadily becoming depleted [1,2].
sulfur and copper after grinding in argentina
Copper Sulfur Grinding twadsafewater. sulfur and copper after grinding hoteir. copper pyrite Pyrite is also known as fool''s gold It is composed of iron and sulfur and contains no copper or gold However, copper Fresh copper is reddish brown colored, but after, Make a powder by scratching or grinding the minerals. >>Chat Online
The Future of Extractive Metallurgy [Saltillo]
Sulfur dioxide is produced in high concentrations and can be economically captured for sulfunc acid manufacture. However a nearby market for this acid must be available. Nickel Nickel sulfide or nickel-copper sulfide concentrates are roasted to decrease their sulfur content,
Copper Production: How Is Copper Made? - ThoughtCo
The remaining mixture is a molten copper sulfide referred to as matte. The next step in the refining process is to oxidize liquid matte in order to remove iron to burn off sulfide content as sulfur dioxide. The result is 97-99%, blister copper. The term blister copper comes from the bubbles produced by sulfur dioxide on the surface of the copper.
Recommendations - Sulphur Bentonite Fertilizer
TIGER Copper 12% + S to apply Added Value Sulphur ... Oxy-Sulfates are formed by taking a Oxide material and grinding it into a powder. The powder is then granulated and placed into a Sulfuric Acid bath, and left for a period of time for the sulfuric acid to solubilize the oxide material. This achieves the maximum amount of available sulfate the
Copper Mining and Extraction Sulfide Ores
Stage 1: Crushing and grinding The ore from the mine contains about 2% copper. To get at the copper the first stage is crushing in huge cylindrical ball mills. ... The name 'blister' copper comes from the fact that this final process produces bubbles of sulfur dioxide on the surface of the copper. The blister copper is cast into anodes ...
Productos – Asarco
GRINDING. The ore is ground into a fine powder by large rotating mills. The two types used in the ... chalcopyrite which is a naturally occurring compound of copper, iron, and sulfur. The material that sinks in the first flotation cell goes on to two more flotation cells to recover as much
US4138248A - Recovery of elemental sulfur and metal values ...
A process for the recovery of copper, molybdenum, gold and elemental sulfur in tailings from hydrometallurgical processing of copper sulfide ores, the process comprising concentrating the tailings containing elemental sulfur and copper, gold and molybdenum to a small bulk volume by froth flotation to reject barren gangue including jarosite, if present, and other impurities, separating the ...
Advanced Powder Technology
copper carbonate particles ground with each salt additive before sulfur addition were of relatively high positive values. However, obvious decreases in the value of zeta potential after adding sulfur in the grinding operation were observed, implying that the exis-tence of sulfur coating pushed the high potential of positive value to the ...
Right to Know Hazardous Substance Fact Sheet
Inhaling Copper can irritate the nose and throat. Inhaling Copper can cause a sore and/or a hole in the "bone" (septum) dividing the inner nose. Copper can cause headache, nausea, vomiting, diarrhea and abdominal pain. Exposure to Copper can cause a flu-like illness called metal fume fever. Copper may cause a skin allergy.
Mantos Blancos Copper Mine - Mining Technology | Mining ...
For sulphide, the grinding process is followed by flotation, which involves milling material until slurry is formed, with particles up to 180 microns in size. The slurry undergoes another process in which copper and other materials are concentrated in froth. Filtration is done until water content is reduced to 9%.
Acid Leaching - Copper Ore Treatment Method
The ferrous sulfate contained in the barren solution after copper precipitation, diluted with water to desired iron content is fed to the autoxidation cell together with sulfur dioxide with excess air to produce the sulfuric acid-ferrous sulfate solvent. The sulfur dioxide required is produced by the burning of elemental sulfur.
Copper Concentrates - Cargo Handbook - the world's largest ...
Copper concentrate is the first commercial product of the copper production line and is composed of approximately equal parts of copper, iron and sulfide. Concentrates are the raw material for all copper smelters, which by processing it obtain an impure form of metallic copper, anode or blister copper, which is later used to produce high purity ...
How Hydrometallurgy and the SX/EW Process Made Copper the ...
The mining, crushing and grinding portions of the processing are extremely energy intensive since the rock must be reduced essentially to talcum powder fineness in order to separate the copper-bearing minerals from it. ... molten iron oxide and gaseous sulfur dioxide. The impure copper is then purified by electrolytic purification to 99.99% ...
Improvement in the floatability of CuO by dry grinding ...
Cogrinding copper oxide (CuO) with sulphur and flotation of the ground sample are conducted to improve the floatability of the oxide. It has been found that recovery of the ground oxide by flotation has increased with an increase in grinding time and rotational speed.
sulpher grinding machinery in india
sulfur grinding mill suppliers Sulfur Grinder, Sulfur Grinder Products,, Copper ore sulphur grinding machine supplier in india is one of the. live chat. sulphur stone grinding plant. XSM Machinery (sulphur stone grinding plant) in mineral processing aspects widely used, many customers get more benefits, XSM product also mainly for minerals ...
Copper Mining and Processing: Processing Copper Ores ...
Copper processing is a complicated process that begins with mining of the ore (less than 1% copper) and ends with sheets of 99.99% pure copper called cathodes, which will ultimately be made into products for everyday use.The most common types of ore, copper oxide and copper sulfide, undergo two different processes, hydrometallurgy and pyrometallurgy, respectively, due to the different ...
Smelting Copper or Lead - Processes | Haz-Map
Lead and copper smelter workers are exposed to lead, arsenic, carbon monoxide, sulfur dioxide, and silica. [ILO Encyclo: Copper, Lead and Zinc Smelting and Refining] Copper smelting: After grinding the crushed ore, a slurry is formed to which flotation "assists" are added.
Mechanochemical sulfidization of a mixed oxide-sulphide ...
Mechanochemical sulfidization of a mixed sulfide/oxide copper ore by co-grinding with sulfur and additives including Mg(NO 3) 2 and Fe(NO 3) 3 salts and iron, aluminum and magnesium powders was investigated for the first time. Also, the influence of sulfidization during the wet-milling process was examined on the separation efficiency and recovery of copper in detail.
Copper Smelting - IFC
The amount of sulfur dioxide released depends on the characteristics of the ore—complex ores may contain lead, zinc, nickel, and other metals— and on whether facilities are in place for captur-ing and converting the sulfur dioxide. SO. 2. emissions may range from less than 4 kilo-grams per metric ton (kg/t) of copper to 2,000 kg/t of copper.
Cutting Fluids for Machining - Thomasnet
Copper Alloys: Most brasses, bronzes, and copper are stained when exposed to cutting oils containing active sulfur and chlorine; thus, sulfurized and sulfochlorinated oils should not be used. For most operations a straight soluble oil, mixed to 1 part oil and 20 to 25 parts water is satisfactory.
11.31 Abrasives Manufacturing
the grain into a natural or synthetic rubber. Sulfur is added as a vulcanizing agent and then the mix is rolled between steel calendar rolls to form a sheet of the required thickness. The grinding wheels are cut out of the rolled sheet to a specified diameter and hole …
Chapter 6 Copper Production Technology
discovered that heat made copper more malle-able. Casting and smelting of copper began around 4000-3500 B.C. (see figure 6-2). About 2500 B. C., copper was combined with tin to make bronze—an alloy that allowed stronger weapons and tools. Brass, an alloy of …