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US3827557A - Method of copper sulfide ore flotation ...

A novel flotation promoter used in the concentration of copper bearing ores for the efficient selective flotation of copper values, including chalcopyrite, with suppression of iron pyrites; the promoter comprising a sodium sulfate of an aliphatic hydrocarbon having a carbon chain in excess of 12 carbons and chemically combined with at least one mole of the C2-C3 alkylene oxides.

Extraction of Copper from Copper pyrite | Grade 12 Science ...

The principal ore of copper is copper pyrite and copper is extracted from this ore. The different steps in extraction of copper are: Crushing and Concentration: The ore obtained from mines are broken down into small piece by jaw crusher and then pulverized. The ore being sulphide ore is concentrated by froth floatation process.

LABORATORY CONCENTRATION OF VARIOUS ALASKA …

A sample of ore from the Moth Bay mine, Revillagigedo Island (fig. 1, item 1), contained 7.35 percent Zn and 1.62 percent Cu. The ore was found to be amenable to concentration by standard selective flotation methods to produce marketable copper and zinc concentrates with reasonably good recoveries.

Concentration of Ores – Study Material for IIT JEE ...

This a chemical method of concentration. Here the powdered ore is treated with certain reagents, which dissolves the ore leaving behind impurities. The impurities left undissolved are removed by filtration. Leaching method is used for concentrating ores of aluminium, silver, gold etc. For example, bauxite (AI 2 O 3.2H 2 O), is concentrated by ...

Concentration of Ores: Hydraulic Washing, Froth Flotation ...

Magnetite and Chromitite ores (both iron ores) use this method on a large scale to remove their impurities. Learn the process of extracting Crude Metal from Concentrated Ore. Froth Flotation Process. Another method of concentration of ores is the Froth Flotation Method. This is the process for concentration of primarily sulphide ores.

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 ...

Extraction of Metals: Concentration of Ore, Refining of ...

The first step in metallurgy is to remove these unwanted impurities from the ore, to get a concentrated ore containing a much higher percentage of the metal. The method used to remove gangue from ore depends on the physical or chemical properties of the gangue and ores. Some of the methods used in the concentration of the ore include, 1.

Copper Refining: From Ore to Market | INN

The copper is concentrated further by slurrying the ground ore with water and chemical reagents. In this process, air is blown through the mixture, …

Iodometric Determination of Copper

Determination of Copper in an Ore Note: Since the range of the percentage of copper is relatively large, your instructor will give you a "ballpark" estimate of the % Cu in your sample. Use this to calculate the sample size needed for titration with 35 mL of the thiosulfate solution. See #1 below. 1.

Extraction Of Copper | Mining, Concentration, Smelting ...

The percentage of copper in the actual ore is too low for direct extraction of copper to be viable. The concentration of ore is required and it is done by the Froth Flotation method. Concentration of Ore: The ore is crushed into a fine powder and a suspension is created in water. To this are added, Collectors and Froth Stabilizers.

copper extraction and purification - chemguide

Sulphide ores such as chalcopyrite are converted to copper by a different method from silicate, carbonate or sulphate ores. Getting copper from chalcopyrite, CuFeS 2. Chalcopyrite (also known as copper pyrites) and similar sulphide ores are the commonest ores of copper. The ores typically contain low percentages of copper and have to be ...

DETERMINATION OF COPPER BY ATOMIC ABSORPTION SPECTROPHOTOMETRY

1. The student will analyze a sample of copper ore using atomic absorption spectrophotometry. 2. The student will use the calibration curve method of analysis. 3. The student will use the method of standard addition for this analysis. 4. This method also depends on the fact that all of the sample is dissolved. 5. A known and unknown are treated ...

Copper Concentrates - Cargo Handbook - the world's largest ...

Copper extraction techniques refers to the methods for obtaining copper from its ores. This conversion consists of a series of chemical, physical, and electrochemical processes. Methods have evolved and vary with country depending on the ore source, local environmental regulations, and other factors.

Colourimetric determination of copper ore | Experiment ...

Samples of copper ore, such as malachite, could be shown, if available. For the second question, work out the concentration of copper in, say, test tube 3: Concentration Cu (as Cu 2+) = 4/10 x 1 M = 0.4 M. Work out the concentration of copper ions when 5 g of copper carbonate is dissolved and made up to 100 cm 3 of solution (formula mass of ...

SPECTROPHOTMETRIC DETERMINEATION OF THE COPPER …

100 mL of a solution that is 0.36 grams of copper/100 mL of solution. 100 mL of a solution that is 0.18 grams of copper/100 mL of solution. 100 mL of a solution that is 0.09 grams of copper/100 mL of solution. Percent of copper in brass page 2. Given the data below, construct a calibration graph of absorbance versus concentration: Concentration

(PDF) Ammonia Leaching: A New Approach of Copper Industry ...

Sulfide ores are usually beneficiated using flotation methods, while copper oxide ores directly leached worldwide [4]. Studies on the leaching kinetics of copper sulfide ore indicate low kinetics ...

Copper Ore Processing Methods

Copper Ore Processing Methods. The four major steps in the production of marketable copper are mining, concentrating, smelting, and refining. In a few instances, however, leaching takes the place of concentrating, smelting, and refining. At present, although considerable leaching and direct-smelting ores are produced, the bulk of the copper ore ...

Experiment 12: Make-Up Experiment Copper Analysis by ...

(e) mass of copper Average % copper content (f) % copper content 12B Exercise Copper(II) sulfate forms a hydrate which contains 36.1% by mass water. Since the only component (other than H2O and Cu 2+) is the sulfate ion, SO 4 2–, we can now determine the complete formula of the hydrated copper(II) sulfate. Do this determination.

Analysis of the copper analyte solution by an iodometric ...

Table 2.0: Expected concentration of copper(II) analyte solution and the amount iodide to be added. Given that the limiting factor in reaction 2.0 is the moles of copper(II), excess iodide ions must be added to ensure all copper(II) ions are reduced to copper(I). No matter how much excess iodide ions

Innovations: Introduction to Copper: Mining & Extraction

There is no shortage of copper resources. In fact, copper is one of the most abundant of the metallic elements in the earth's crust. The average estimated concentration is between 55 and 70 mg/kg, placing it below chromium (200 mg/kg) and zinc (132) but above tin and lead. Commercially exploited deposits of copper ores are found in many parts ...

12.3 Primary Copper Smelting

(1.6 millon tons) of ore produced in 1991. Copper is produced in the U. S. primarily by pyrometallurgical smelting methods. Pyrometallurgical techniques use heat to separate copper from copper sulfide ore concentrates. Process steps include mining, concentration, roasting, smelting, converting, and finally fire and electrolytic refining.

Colorimetric Measurement of Copper Ore - NJIT

Determine the concentration of an unknown solution using a standard graph made by plotting absorbance versus concentration (M) using the Beer-Lambert law. Exclusive Note to Teacher: Sample of powdered ore - A simulated copper ore can be made up with a minimum of 30% by mass of copper (II) carbonate, CuCO3(s), mixed with sand. Standard (s)

metallurgy: Concentration of the Ore | Infoplease

Another method is the flotation process, used commonly for copper sulfide ores. In certain cases (as when gold, silver, or occasionally copper occur free, i.e., uncombined chemically in sand or rock), mechanical or ore dressing methods alone are sufficient to obtain relatively pure metal. Waste material is washed away or separated by screening ...

IS 1493-5 (1990): Methods of Chemical Analysis of Iron ...

spectrometric method for the determination of the copper con- tent of iron ores. This method is applicable to a concentration range of 0,003 to 1.0 % (m/m) of copper in natural iron ores, and iron ore con- centrates and agglomerates including sinter products. 2 References IS0 648, Laboratory glassware - One-mark pipettes.

Spectrophotometric Determination of Copper

5. You will now use your graph and the absorbance values of your copper ore solutions to determine the concentration of your copper ore sample. 6. Fine the absorbance value you wrote down for the unknown ore sample. Go to the absorbance axis (y-axis) and place a …

[Solved] Leaching method is suitable for the concentration ...

Explanation: Gold and silver ores are concentrated by leaching. In the leaching method, the ore is treated with a suitable reagent in which ore is soluble but impurities do not.Thus, impurities are removed by filtration. Among galena (PbS), copper pyrites (CuFeS 2), cinnabar (HgS) and argentite (Ag 2 S) argentite being silver ore is concentrated by chemical leaching method.

Copper Mining and Extraction Sulfide Ores

Copper can be extracted from its ore by: Underground: sinking a vertical shaft into the Earth to an appropriate depth and driving horizontal tunnels into the ore. Open pit: 90% of ore is mined by this method. Ores near the surface can be quarried after removal of the surface layers. The ore is treated with dilute sulfuric acid.

Iodometric titration of copper

Download determination of copper concentration reaction file, open it with the free trial version of the stoichiometry calculator. Click n=CV button above S 2 O 3 2-in the input frame, enter volume and concentration of the titrant used. Click Use button. Read number of moles and mass of copper in the titrated sample in the output frame.

Introduction to Spectroscopy: Analysis of Copper Ore

Earth's surface. Prospecting for copper then was relatively simple. Recently, increased demand for copper resulted in numerous mines, and the search for copper ore is now very competitive. When a copper deposit is discovered, drilling is undertaken to determine the size and grade (concentration) of copper at the potential mining site.

Chapter 6 Copper Production Technology

the copper industry occurred in the first two dec-ades of this century, whenopen pit mining, flo- tation concentration,and the reverberatory smelter were adapted to porphyry copper ores. With the exception of leaching-solvent extrac-tion-electrowinning, the basic methods of cop-per production have remained unchanged for 65 years.

Copper Mining & Extraction Process Flow Chart

Copper Mining & Extraction Process Flow Chart. This flowchart made of machinery icons explains or expresses in simple but clear terms the step of the Copper Mining and Copper Extraction Process. Starting from either open-pit or underground mining and using a different relevant treatment method for oxide or sulphide copper mineral (ore).

Copper extraction - Wikipedia

Copper extraction refers to the methods used to obtain copper from its ores.The conversion of copper consists of a series of physical and electrochemical processes. Methods have evolved and vary with country depending on the ore source, local environmental regulations, and other factors.. As in all mining operations, the ore must usually be beneficiated (concentrated).

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.