roasting of metal sulfides

  • DE60000574D1

    DE60000574D1 - Treatment of metal sulfide concentrates by roasting and reducing merger in the electric arc furnace - Google Patents Treatment of metal sulfide concentrates by roasting and reducing merger in the electric arc furnace . Info Publication number DE60000574D1.

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  • Sulfatizing roasting for copper and cobalt production

    roasting of metal sulfides was already one of the main technologies in the company. Outotec has developed roasting solutions for copper, gold, zinc, lead, molybdenum and pyrite ores. The continuously expanded and upgraded research facilities provide an excellent basis for

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  • Recent advances in metal sulfides: from controlled

    In recent years, nanocrystals of metal sulfide materials have attracted scientific research interest for renewable energy applications due to the abundant choice of materials with easily tunable electronic, optical, physical and chemical properties. Metal sulfides are semiconducting compounds where sulfur is

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  • Recovery of Copper from Copper Sulfide Concentrate by

    Roasting temperature was the key factor considered during sulfation roasting. Complex copper sulfides decom-posed sufficiently and less copper sulfate decomposed were the key step to achieve high copper extraction. When the roasting temperature is no higher than 650˚C, there would be mainly metal sulfates and sulfur dioxide formed.

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  • Sulfides

    Sulfides The minerals that make up the sulfide class are composed of metal cations (+2 charge) combined with sulfur. The sulfides form an important group of minerals which includes the majority of the ore minerals for iron, copper, nickel, lead, cobalt, zinc, and silver.

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  • Near Room Temperature Power Factor of Metal Sulfides Films

    Near Room Temperature Power Factor of Metal Sulfides Films The combined me-thods involving low temperature roasting of sulfide copper minerals with potassium chlorides without the formation of

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  • PRODUCTION OF HYDROGEN THROUGH OXIDATION OF METAL SULFIDES

    Jul 05, 2011Utilization of process and equipment for oxidation of metal sulfides, preferably two step metal sulfide oxidation reactions, and more preferably with looping back of second step oxide to the first step as an oxidizing agent, to generate sulfur dioxide and a useful metal or metal oxide, and react the sulfur dioxide with halogen (iodine or bromine) and water to produce sulfuric and halogen acid

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  • Pyrometallurgy

    The most common example of roasting is the oxidation of metal sulfide ores. The metal sulfide is heated in the presence of air to a temperature that allows the oxygen in the air to react with the sulfide to form sulfur dioxide gas and solid metal oxide. The solid product from roasting is often called calcine.

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  • furnace for roasting sulfides

    sulfide ores rotary kiln rotary calciner furnace. Iron Ore Roasting Rotary Kiln for Sale - Iron Ore Roasting Rotary Kiln for a wide variety of sulfide ores prior to metal extraction. The kiln is a in an external furnace, Contact supplier

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  • Roasting (metallurgy)

    Roasting (metallurgy) Roasting is a process of heating of sulfide ore to a high temperature in presence of air. It is a step of the processing of certain ores. More specifically, roasting is a metallurgical process involving gas–solid reactions at elevated temperatures with the goal of purifying the metal component(s).

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  • US Patent # 4,437,884. Ore roasting with recycle of gases

    Metal sulfide ores which contain organic matter are oxidized by roasting in a multiple hearth furnace, wherein at least a portion of gases formed during the oxidation is recycled from a higher-temperature, upper portion of the furnace to a lower-temperature, lower portion of the furnace.

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  • roasting gold sulfides with lime

    roasting gold sulfides with lime. roasting gold sulfides with lime In sulfide systems, quebracho is a key reagent in differentialgermanium from zinc ores and for the recovery of ultrafine gold is, Get A Free Quote Gold and silver recovery method - Inco Limited. Sulfides, Selenides and Tellurides: rebellious and,

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  • What is metal sulfide

    Sulfide ores are usully converted to oxides by heating them in air, this process is called roasting. During this process, metal sulfide is turned into metal oxide and sulfur dioxide is given out

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  • roasting gold sulfides with lime

    roasting gold sulfides with lime. gold ore roasting using lime . roasting gold sulfides with lime. Patent US5254320 Method for roasting sulphide ores Google, roasting gold sulfides with lime,19 Oct 1993, The ore and a More; The lime-concentrate-pellet roast process for

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  • HOME Product roasting metal sulfides

    HOMEProductroasting metal sulfides. Roasting of a sulfide polymetallic concentrate in a fluidized bed . Sep 1, 2014 Three series of experiments on oxidizing roasting of sulfide Pyrite Sulfide Mineral RUSSIAN Metallurgy Nonferrous Metal Sulfur Trioxide. of sulfur vapor in roasting gold ores. 20111110 roasting of metal sulfides was already

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  • What Is Purpose Of Roasting In Metal Extraction

    1) The galena is roasted (reacts with O2) in order to remove the sulfur component of the metal sulfide [2]. Roasting is a method where a sulfide ore (i.e an ore containing PbS) is heated in air which converts the metal sulfide to either a metal oxide or a metal itself [3].

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  • (Answered) What is a drawback of roasting metal sulfides?

    May 06, 2016What is a drawback of roasting metal sulfides? A) Gases that produce acid rain are released. B) The process is very energy intensive. C) The metal obtained is often contaminated with carbon. D) all of the above E) only A and B

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  • roasting copper sulfide

    roasting copper sulfide Chloridizing Roasting Process for a Complex Sulfide 20121026enspenspThis paper describes a chloridizing roasting process applied

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  • Recovery of Gold in Pyritic Sulfide Ores

    Sulfide ores, such as chalcopyrite, sphaelerite, galena, and pyrrhotite, and mixtures of these ores have historically been found with micron size gold particles included in them. This generally involves frother, several collectors (promoters) and possibly some modifying or depressing agents as well.

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  • What is roasting of a sulfide ore?

    Jun 20, 2018In roasting, the ore or ore concentrate is treated with very hot air. This process is generally applied to sulfide minerals. During roasting, the sulfideis converted to an oxide, and sulfur is released as sulfur dioxide, a gas.

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  • Calcination

    The most common example of roasting is the oxidation of metal sulfide ores. The metal sulfide is heated in the presence of air to a temperature that allows the oxygen in the air to react with the sulfide to form sulfur dioxide gas and solid metal oxide. The solid product from roasting is often called calcine.

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  • Metal Extraction Chapter 13 Flashcards

    The extraction of metals involves reduction, usually of metal oxides. This reduction of the metal compound is usually done in one of the following ways: •by heating with carbon (in the form of coke) •by heating with hydrogen •by heating with a more reactive metal (active metal) •by electrolysis

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  • Formation of zinc sulfide species during roasting of ZnO

    May 18, 2018Nowadays, more than 70% of Zn is produced from zinc sulfide concentrates by conventional roasting-leaching-electrowinning processes in

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  • Is roasting a process in which metal sulfides are

    Sep 09, 2008You ask specifically about roasting of metal sulphides. Probably the most common is the roasting of FeS2 to produce SO2 for the production of H2SO4 4 FeS2(s) + 11 O2(g) → 2 Fe2O3(s) + 8 SO2(g) Here the sulphide is conveted to an oxide of sulphur and of iron The metal sulphides are a good source of SO2 gas for acid production.

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  • Solved: The process of converting metal sulfides to metal

    Problem 15MCQ: The process of converting metal sulfides to metal oxides is calledA) roasting.B) smelting.C) reduction.D) leaching.E) oxidation. 1 step-by-step solutions. Solved by professors experts. iOS, Android, web.

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  • Lecture 14: Pyro metallurgical extraction (Roasting

    processeslike roasting, smelting, converting and refining require large amount of thermal energy. This lecture discusses roasting. Roasting Roasting is the oxidation of metal sulphides to give metal oxides and sulphur dioxide. Typical examples are: 2 ZnS E3 O 6. L2 ZnO E2 SO 6 eS 6. 5.5 O 6. Fe 6. O 7. 4 SO 6 2 PbS E3 O 6. L2 PbO E2 SO 6 7

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  • Smelting and Roasting Ores to recover gold, silver and

    However, this "burning" or roasting of the sulfide ores does work well to convert rebellious ores into a more free milling state, allowing the values to be extracted. Exact temperatures used in roasting vary, and excessive temperatures can cause problems, including melting the sulfides before they can oxidize.

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  • roasting antimony sulfides

    In the mineral,there are always metal sulfides antimony, iron, manganese, plumbum, zinc, nickelGenerally, we use roasting and chlorination

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  • Full text of Roasting of gold and silver ores : and the

    By roasting ores in which gold and silver is present with salt, chlo- ride of gold is formed, according to Plattner ; but 66 ROASTING OF ORES. before the ore becomes red hot, the gold loses a part of its

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  • Solved: The process of converting metal sulfides to metal

    The process of converting metal sulfides to metal oxides is called. A) roasting. B) smelting. C) reduction. D) leaching. E) oxidation.

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