Sulfide Ore An Overview Sciencedirect Topics
Precious metal impurities in the anode are not oxidized at the anode potentials employed, but fall to the bottom of the cell as an anode slime which is occasionally harvested from the cells and sent for recovery of precious metals. ... Nickel matte is produced in the smelting stage. In the converting stage, flash converter or horizontal ...
Understanding Impurities In Copper Electrometallurgy
impurities in copper electrowinning and electrorefining. The first part evaluates the addition of Hydrostar, Cyquest N-900, DXG-F7, and Guartec EW to copper electrowinning electrolyte to affect MnO. 2. deposition on coated titanium anodes (CTAs). The second part examines the effects of anode chemistry and thiourea addition on the
Waste Heat Recovery And Reuse Of Flue Gas In Copper
In the paper, we take current relatively advanced, the most widely used flash smelting furnace, converter and rotary anode furnace as the examples,
Chapter 6 Copper Production Technology
impurities. includina sulfur 0.0058 0.2-6.0 0.2-6.0 0.5-6.0 0.5-6.0 20-300/o dry 30-40/0 reverb, 50-75/0 flash 98-99 98-99 99.99 Formation of the earth Concentration of copper in earths crust Location of economic resource Remove ore from ground and surrounding rock or overburden Creation of large surface area as preparation for flotation
Kennecott Flash Converting Furnace Design Improvements 2001
The Flash Converting furnace was shut down on a planned basis in July 2001 to implement these improvements after 29 months of operation, converting more than 1,000,000 tonnes of
Us5849061a Process For Refining Highimpurity Copper To
A process for refining high-impurity blister copper to anode quality copper is disclosed. In an oxidation step of a blister copper refining stage, soda ash fluxing removes antimony and arsenic while also removing sulfur and iron. In a deoxidation step of the blister copper refining stage, sulfur hexafluoride is injected at a controlled oxygen concentration to remove bismuth while
Process For Refining Highimpurity Copper To Anode
Sep 20, 1996 Despite the energy and environmental advantages of single-stage smelting and converting techniques, the inability of these techniques to effectively remove arsenic, antimony, and bismuth presents a problem because the impurities pass through conventional blister copper refining stages and accumulate in the anode copper at levels which, as ...
Recent Trends In Outokumpu Practice For
2.1. Anode Composition Most of the impurities are introduced to the tankhouse in thc anodes. Because of the varicty of conccntrates and differcnt inLcrmediatc products or residues from other plants of the company the impurity level of Outokumpu anodes has greatly increased in recent years and the variations in anode analysis are large (Table 1).
Unit 5 Electrochemistry Flashcards Quizlet
-consists of nickel plated cathode, cadmium plated anode, and a potassium hydroxide electrode-rechargeable-contains toxic heavy metals never open Lithium Ion Battery-most popular-used in portable electronic devices Lead Acid Battery-used in automobiles-consists of pairs of plates made of Pb(s) and PbO2(s) immersed in dilute H2So4
My Review For Unit 2 Flashcards Quizlet
It is possible to convert the opposing half of the incoming electron flow so that electrons are always moving in the same direction, instead of discarding the negative half of the cycle. -The negative pulse of current is redirected through solid state rectifiers in order to be applied to the cathode side of the x-ray tube.
Copper Anode Slime Metalcess
Copper Anode Slime. Anode slime is a byproduct of copper or lead electro-refining process and found in electrolytic cell bottom or on the anode scrap surface. The copper anode slime and lead anode slime usually contain precious metals like gold and silver. Depending on the treatment capacity, process of anode slime recovery is achieved by two ...
Economic Impacts Of Air Emission Standards Primary
Converter Anode Furnace Concentrate Slag Matte Slag Blister Product Figure 2-1. Primary copper production. (now typically over 50 percent copper) is charged to the converters. The converter operation continues to remove sulfur, iron, and other impurities and produces blister copper, which is at least 95 percent copper. The blister
Copper Sulphuric Acid
Flash converting closely resembles flash smelting. Flash smelting is a closed process and, consequently, off-gas emissions can be efficiently controlled. Flash converting had its first application in the expansion and modernization of Kennecotts copper smelter near Salt Lake City, Utah, which was implemented during 1992-95. Coupled with flash ...
Copper Production Processes Total Materia Article
The flash techniques reduce the energy demand to about 20 million Btu/ton of produced cathode copper. The sulfur dioxide concentration in the off gases from flash furnaces is also higher, over 30%, and less expensive to convert to sulfuric acid (note the INCO process results in 80% sulfur dioxide in the off gas).
Flash Converting Anode Impurities
flash converting anode impurities Typically blister copper is then fire-refined in an anode furnace cast into anodes and sent to an electrolytic refinery for further impurity elimination 0003 For converting the Pierce-Smith and Hoboken converters are
123 Primary Copper Smelting
(FeS), and some heavy metals. Converting the matte yields a high-grade blister copper, with 98.5 to 99.5 percent copper. Typically, blister copper is then fire-refined in an anode furnace, cast into anodes, and sent to an electrolytic refinery for further impurity elimination.
Rio Tinto Kennecott Smelter Metso Outotec
Jul 03, 2017 Chemical impurity levels of anodes a RTK are among the highest in the world, yet production of ASTM Grade 1 cathode is possible due to precipitation of bismuth and antimony as a complex of arsenates in the porous anode slime layer (formed with elevated lead in anode). ... Flash converting process technology is also increasingly being ...
An Update On Flash Converting At Kennecott Utah Copper
Abstract. The Flash Converting Furnace at Kennecott Utah Copper converted over 465kmt of high- grade matte in 2002 but was restricted due to low matte production to
A Study Of Selenium And Tellurium Distribution Behavior
Jan 02, 2021 Si is a typical impurity element in copper making processes, and the content of Si in matte should be carefully monitored in practice, especially in the flash converting process. The Fe-Si-O slag system is also widely used in P-S converters, bottom blowing converting, and some other bath converting technologies.
Chapter 6 Copper Production Technology
Converting i Anode refining and casting I I I Anodes (99.5% Cu) I Cathodes (99.99% Cu) SOURCE Office of Technology Assessment. opment of the mines of Cumberland and North Wales. When the Remans left Britain early in the 5th century, however, economic development stagnated and it was a thousand years or more before Britains metal industry ...
Of An Ideal Smelter
to embody continuous converting. The relatively small tonnage of converter slag (carrying about 14% copper) overflows the C-furnace, and is water granulated, dried and recycled to the S-furnace. Blister with about 0.6 to 0.7% sulfur siphons up out of the furnace, and is continuously delivered to the anode furnaces for pyro-refining to anode copper.
Industrial scale converting tests were carried out in one 120 t Peirce-Smith converter (3.7 m ID by 7.9 m in length) at the Outokumpu Harjavalta Copper Smelter. The test campaign contained of ten converting tests . Three normal converting tests were performed using iron silicate slag to obtain reference results for impurity
Hydrometallurgical Smelter Dust Treatment The Case For
Dec 11, 2019 Impurity metal removal and copper recovery can be done, for example, by leaching the flash smelting furnace boiler, converting furnace boiler, and ESP flue dust. Impure wash acid and acidic wastewater from the acid plant can be recycled to the hydrometallurgical plant where it is used for leaching smelter dust (Figure 1).
Lithium Battery Recycling And Recovery Flash Battery
Feb 10, 2021 In fact, the latter allow a recovery of up to 100% of Lithium and Cobalt, 98% of Manganese, 75% Aluminium, also in the form of cathode/anode materials ready for use for new cells, provided, of course, the compromise between expenses and revenues in the recycling process is found. Fig. B Example diagram of pyro- and hydrometallurgical processes ...
Environmental Guidelines For Nickel Smelting And Refining
inert anodes is the more common refining process used for nickel. Chloride electrolytes are used although sulfuric acid solutions are used more often. Waste Characteristics Air emissions Sulfur dioxide (SO2) is a major air pollutant emitted in the roasting, smelting and converting of sulfide ores (nickel sulfide concentrates
Typical Wear Phenomena Observed On Refractories Out Of
Jan 01, 2019 Other technologies include Hoboken Converter, TBRC but also Flash Converting Furnace and bath smelting furnaces (ISA, Ausmelt) (Davenport et al., 2002). For fire refining two types of furnaces are used the rotary furnace type is dominantly used in the primary production route while secondary smelters tend to use hearth refining furnaces ...
Extractive Metallurgy Of Copper
8.5.3. Converter Shell Design 143 8.6. Alternatives to PeirceeSmith Converting 143 8.6.1. Hoboken Converter 144 8.6.2. Flash Converting 144 8.6.3. Submerged-Tuyere Noranda Continuous Converting 147 8.6.4. Recent Developments in PeirceeSmith Converting Alternatives 150 8.7. Summary 150 References 151 Suggested Reading 153 9.
Metal Mining Technology In Japan 8
Outokumpu type flash furnaces have been built worldwide before now. Except for nickel or pyrite processing furnaces and the ones ceased from operation, twenty three flash furnaces are in operation at the twenty two copper smelters (Saganoseki Smelter has two flash furnaces). Tab.1 and Fig.5 show whereabouts of these copper smelting flash
The Process Of Copper Smelting
The development of copper smelting technology has experienced a long process,but now its still mainly use pyrometallurgy,its copper production accounts is about 85% of the worlds total copper.Henan Longjiang metallurgical chemical equipment Co.Ltd.(the following abbreviation Longjiang) reverberatory furnace and blast furnace are also dominated by pyrometallurgy.
Copper Smelting Process Furnaces Used Byproducts And
Apr 09, 2010 Modern copper smelters use processed copper ore fed into a flash furnace, typically fired by oxygen which produces blister copper, being further processed in a converter furnace. Molten copper is poured from here into rectangular moulds, the resulting ingots subjected to electrolysis producing a metal of 99.9% purity. Copper can be recycled indefinitely without
Electrorefining Of Copper
increased impurity levels in the cathode deposit an increased roughness promotes occlusion of anode residues and electrolyte and (2) anode passivity occurs at current densities above 25-28 mA/cm2. Hence, it can be seen from the data in Table 6.3.1 that in order to obtain pure metals at the cathode, the current density is always low.
Slide Kuliah Umum Pak Bouman Anode Redox
Washing anode scrap by hot water Anode scrap ratio 1114% Electrolyte Purification Dissolved Cu in electrolyte 14 kg per ton Cathode. Soluble anode impurities build-up Bi, Co, Fe, and Ni. Partially dissolved As and Sb. Dissolved Se and Te from slime leaching process.
Reduction Of Silver Loss In Copper Cathode
Jan 01, 2019 Anodes contains copper of the range 99.5 to 99.6%, rest being the impurities. Hence, the purpose of the refining is (1) to remove the impurities so that final cathode conforms to the LME specifications and also (2) to recover the precious metal from the anode copper.
Pilot Cases Cocop Spire H2020 Project
Copper-smelting pilot case the optimization will comprise of converter and anode-furnace scheduling, and setting target matte grades and feed rates of flash-smelting furnaces. Detailed advisory tools will be implemented for controlling unit processes to improve factors such as temperature, slag chemistry and impurities.
175 Refining Of Copper Chemistry Libretexts
Nov 05, 2020 The impurity ions remain in solution. Other impurities, such as Ag, Au, and Pt, are less easily oxidized than Cu. These remain in metallic form and fall to the bottom of the cell, forming anode sludge from which they can later be recovered. The great value of Ag, Au, and Pt helps to offset the cost of refining.