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3 edition of Economic Evaluation of A Process For Ferric Chloride Leaching of Chalcopyrite Concentrate. found in the catalog.

Economic Evaluation of A Process For Ferric Chloride Leaching of Chalcopyrite Concentrate.

United States. Bureau of Mines.

Economic Evaluation of A Process For Ferric Chloride Leaching of Chalcopyrite Concentrate.

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Published by s.n in S.l .
Written in English


Edition Notes

1

SeriesInformation circular (United States. Bureau of Mines) -- 8699
ContributionsPhilips, T.
ID Numbers
Open LibraryOL21735823M


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Economic Evaluation of A Process For Ferric Chloride Leaching of Chalcopyrite Concentrate. by United States. Bureau of Mines. Download PDF EPUB FB2

Equipment cost summary, sulfur recovery 19 ECONOMIC EVALUATION OF A PROCESS FOR FERRIC CHLORIDE LEACHING OF CHALCOPYRITE CONCENTRATE by Thomas A. Phillips 1 ABSTRACT The Bureau of Mines presents an economic evaluation of its process for the ferric chloride leaching of chalcopyrite concentrate. Economic evaluation of a process for ferric chloride leaching of chalcopyrite concentrate.

[Washington]: U.S. Dept. of Interior, Bureau of Mines, (OCoLC) Online version: Phillips, Thomas A. Economic evaluation of a process for ferric chloride leaching of chalcopyrite concentrate.

[Washington]: U.S. Dept. of Interior, Bureau of. Economic evaluation of a process for ferric chloride leaching of chalcopyrite concentrate / By Thomas A.

Phillips and United States. Bureau of Mines. Chalcopyrite. Publisher: [Washington]: U.S. Dept. of Interior, Bureau of Mines, Year: T.A. Phillips, “Economic Evaluation of a Process for Ferric Chloride Leaching of Chalcopyrite Concentrate,” BuMines IC, (), p.

Google ScholarCited by: The effect of agitation on the leaching of chalcopyrite concentrate in ferric chloride in presence and absence of cupric chloride (C FeCl3: M, T = 90 °C, leaching solution was found to have the same trend as for the copper recovered as shown in Fig.

Cited by: In hydrometallurgy, ferric ions in chloride medium are used as oxidants during the on-leaching process for copper sulfides and concentrate, especially of chalcopyrite, CuFeS 2. The apparent activation energy for chalcopyrite leaching was found to range from to kJ mol −1, and this suggests that the leaching of chalcopyrite is chemically controlled.

The leaching rate of chalcopyrite increases with an increase in Fe(SO 4) concentration up to mol dm −3, but a further increase of the Fe(SO 4) Cited by: Thomas A. Phillips has written: 'Economic evaluation of a process for ferric chloride leaching of chalcopyrite concentrate' -- subject(s): Chalcopyrite, Hydrometallurgy 'Economic evaluation of an.

In this work, two new process flowsheets, shown in Fig. 1, Fig. 2, were developed featuring chloride leaching of chalcopyrite combined with solvent extraction and conventional sulfate electrowinning to address the issue of recovering a pure differ, however, with respect to iron deportment.

The Hematite Process, in which no air is introduced to the leach, allows separate sulfur and Cited by: Leaching kinetics of copper from chalcopyrite concentrate in nitrous-sulfuric acid samples, determined from measurements on an HORIBA/Partica LAV2 Particle Size Analyzer, was 35 μm.

Ultrafine milling of the as-received material to 15 μm was performed using a ball mill. The size of the product was confirmed by particle size analysis. The Bureau of Mines presents an economic evaluation of its process for the ferric chloride leaching of chalcopyrite concentrate.

In this process, chalcopyrite concentrate is leached with ferric chloride solution to extract copper, which is precipitated from the solution by electrolysis while leaving sulfur in the residue. used ferric. An Investigation into the Ferric Leaching of Chalcopyrite - a Sub-Process in the Bioleaching of Chalcopyrite by Elizabeth Geethika Jeevaratnam (Eng.) Chemical Dissertation prepared in partial fulfilment of the requirments for the degree of {Eng.) Chemical In the Department of Chemical Engineering University of Cape Town November Copper leaching from chalcopyrite concentrate in ferric and cupric chloride system was investigated using a two-stage countercurrent leach circuit under a nitrogen atmosphere at 97 degrees C to.

The Bureau of Mines presents an economic evaluation of its process for the ferric chloride leaching of chalcopyrite concentrate. In this process, chalcopyrite concentrate is leached with ferric chloride solution to extract copper, which is precipitated from the solution by electrolysis while leaving sulfur in the residue.

In this paper, the effect of the cupric and chloride ions concentrations on copper dissolution from chalcopyrite concentrate was studied in acidified media. Variables included three different concentrations of Cu2+ (,and g L−1), four different concentrations of Cl− (0, 5, 7, and 10 g L−1), two different pH values of 1 and 2, and a constant temperature of 60 °C.

Results Cited by: 2. chemical leaching of chalcopyrite was increased 4-fold in the presence of M ferrous iron compared with M ferric iron. Cordoba. et al. [8] studied the influence of ferric iron on chalcopyrite dissolution at low and high solution potentials and found that although ferric iron was responsible for the oxidation of chalcopyrite, ferrousFile Size: KB.

läh International Mining Congress and Exhibition of Turkey-IMCET«9ISBN Determination of Leaching Conditions of Sphalerite Concentrate in Acidic Ferric Chloride Solution A. Aras, S. Aydoğan & A. Özkan Selçuk University, Department oj Mining Engineering, Konya, Turkey.

The anodic dissolution of chalcopyrite has been examined in chloride and sulphate solutions from 20°C to °C. In chloride the yield of elemental sulphur is nearly %, whereas in sulphate solutions it is 75% or less, the remainder being oxidized.

It is postulated that in sulphate solutions the copper dissolves as a thiosulphate complex, which can decompose either to a soluble form, or to Cited by: Autoclave oxidative leaching is one of the most promising hydrometallurgical approaches for copper suplhide materials processing.

In previous studies [2–4], the possibility of an efficient autoclave treatment of chalcopyrite concentrate was confirmed.

The concentrate has the following chemical composition, %: Cu, Zn, S, Fe, Pb, Ni, SiO2 [1].Author: Aleksei Kritskii, Kirill Karimov, Stanislav Naboichenko. Illustrating the practical aspects of hydrometallurgy, the book also analyzes the production of copper as a real-world example of where chalcopyrite leaching is the main process used for extracting copper from sulfide minerals in the industry.

Elemental sulfur produced by chloride leaching of sulfide ores or concentrates contains selenium and tellurium usually too high to be used in various industrial or agricultural uses. The sulfur in the leaching residue can be upgraded to 90% in grade by froth flotation and the sulfur concentration can be followed by sulfur purification and selenium and tellurium by: 9.

dealt with the chemical leaching of nickel from a sulphide ore in a dump-leaching environment and is described in the present paper. Chemical leaching wasstudied both to provide information on its use asaseparate process and to serve asabasis for comparison with the subsequent investigation ofbacterial leaching.

Phase 2(published separ. process capable of producing concentrated leach solutions. Ferric chloride and cupric chloride solutions have been the favored leachants, particularly for chalcopyrite concentrates, because of their high leaching efficiency and the fact that sulfur is liberated in the elemental form: CuFeS2 + 3CuCI 4CuCI + FeCI2 + 2S (1).

The cuprex process leaches chalcopyrite concentrate at atmospheric pressure with ferric chloride solution in two stages. The pregnant liquor containing copper, iron and minor amount of impurities mainly zinc, lead and silver is sent to the extraction stage of the SX circuit where it is contacted at ambient temperature with a kerosene solution.

This two-volume set provides a full account of hydrometallurgy. Filled with illustrations and tables, this work covers the flow of source material from the mined or concentrate state to the finished product. It also highlights ion exchange, carbon adsorption and solvent extraction processes for solution purification and concentration.

The extensive reference list-over makes this set a 5/5(1). A fundamental study of the sonochemical leaching of chalcopyrite in ferric ion media has been performed to understand and quantify the effects of sonication and other parameters on leaching reactions.

The study covers sulfate and chloride media. The main leaching reaction: CuFeS₂ (s) + 4Fe₃ + (aq) -> Cu₂ + (aq) + 5Fe₂ + (aq) + 2S (s) was found to be dependent on temperature and initial.

chloride complexes. Many process variables, such as temperature, ferric iron and chloride concentration as well as pH, can affect the dissolution of gold.

According to Liu and Nicol () increase in temperature, chloride concentration and ferric to ferrous ratio improves gold dissolution in ferric chloride pressure leaching. Different Cited by: Because of increasing concern with air pollution, the Bureau of Mines has developed a hydrometallurgical procedure to obtain elemental sulfur from chalcopyrite (cufes2) by means of the following reaction: cufes2 + 3fecl3 -> cucl + 4fecl2 + 2s under optimum conditions, percent of the copper and percent of the iron were extracted in 2 hours from a typical mill concentrate containing chalcopyrite bioleaching with moderately thermophilic microorganisms [3].

This is because using moderate thermophiles compared with mesophiles to bioleach chalcopyrite can greatly improve the leaching reaction kinetics, hence, the total copper extraction is higher [4]. Ferric iron plays a very important role during bioleaching of chalcopyrite.

Economic evaluation of a process for ferric chloride leaching of chalcopyrite concentrate [] Phillips, Thomas A. [Washington]: U.S. Dept. of Interior, Bureau of Mines, User Review - Flag as inappropriate I used this book for my report in Magnetic separation and i found it very helpful.

It explains everything necessary to know in detail and the diagrams are also very useful and they make understanding much easier/5(2). Abstract. The kinetics of chalcopyrite leaching in acidic ferric/ferrous sulfate media under atmospheric conditions in the presence of pyrite has been investigated.

It has been found that pyrite samples from different sources affect the rate of chalcopyrite leaching differently. A strong correlation between the amount of silver associated with the pyrite and its effectiveness has been noted.

a) Classical concept of hydrometallurgical processing of concentrate (example of chloride leaching) b) Leaching-Flotatlon processing of ore (example of sulfate leaching).

Just such a situation occurs with the pyritic deposit of complex saxde ores found near Size: 6MB. For low-grade ores, the chemical agitation leaching process has poor economic efficiency. Yet during a bioleaching process, the leaching bacteria could reduce the usage of Fe 3+ [ 10 ] by regenerating Fe 3+ via oxidizing Fe 2+ released from pentlandite or produced in the reaction between Fe 3+ and sulfide [.

Fig. 6 shows the effect on chloride concentration for leaching chalcopyrite by adding MnO 2 as an oxidizing agent. The best results were obtained when working with high concentrations of chloride (wastewater, g/L of chloride) achieving extractions of 77 % Cu at the end of the by: 4.

United States Bureau of Mines - Reports of Investigation - (part 4) RI / AN ECONOMIC AND TECHNICAL EVALUATION OF MAGNESIUM PRODUCTION METHODS (IN THREE PARTS) 2.

CARBOTHERMIC, pb, $ 12 FERRIC CHLORIDE LEACHING OF CHALCOPYRITE CONCENTRATE, pb, $ Dry Concentrate Etchant (Ferric Chloride) Ferric Chloride is the best choice for etching copper PC boards. Datak supplies FeCl in a dry, powder form and the user must add it to water to make the etching solutions.

This 1/4 lb. package produ/5(3). The current study was carried out to investigate the kinetics of reactions for the pressure oxidative leaching of a molybdenite concentrate in less than one hour.

The effects of oxygen pressure, stirring speed, pulp density, acid concentration and temperature on the leaching rate of the molybdenum were studied. It was found that about 85% of molybdenite was oxidized to molybdic oxide.

The feed to the process is a concentrate containing chalcopyrite and pyrite. The composition is the same as that of a concentrate investigated by McDonald and Muir (). For modelling purposes, the gangue mineral is assumed to be quartz. The feed composition is shown in Table II. '' (& #%.

'(% '(% # % #%"$(Particle size data was obtained Author: F. Saloojee. A process for the manufacture of an aqueous solution of ferric chloride including the steps of introducing an aqueous solution of hydrochloric acid into a reactor containing a bed of fragments of an oxide-containing iron ore so that the aqueous solution of hydrochloric acid travels upwardly through the bed, collecting a suspension of ore particles in an aqueous solution of ferric chloride from.

Copper is recovered from chalcopyrite by means of a pollution-free hydrometallurgical process which entails leaching and converting the chalcopyrite with copper sulfate in order to produce an insoluble copper sulfide, a soluble iron sulfate and sulfuric acid.

A secondary leach is then conducted in order to react the copper sulfide with oxygen in the presence of a jarosite-forming cation to Cited by: During leaching with Ferric ion a critical balance between Fe 2 + and Fe 3 + ions in the leach solution is essential to maintain efficiency of leaching and subsequent electrolysis.

The ferric ion is also very sensitive to pH changes, hydrolysis and precipitation of basic ferric salts starting at pH 2. Chlorine water and hypochlorite.Ferric chloride (FeCl3) liquid solution phase. specific gravity. Molecular weight.

Dark brown appearance. degree C boiling point. - pH (5 percent by volume). 0 degree C freezing point. grams/liter maximum copper holding capacity. microinch/minute at 50 - 55 degree C etch rate.

50 - 55 degree C operating /5(37).