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  • What would happen if carbon was roasted with an ore of

    What would happen if carbon was roasted with an ore of zinc sulfide? Unanswered Questions . Why did Churchill replace Chamberlain as Britain's new prime minister shortly after World War 2 began

  • Roasting (metallurgy) Wikipedia

    Roasting is a process of heating of sulphide 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). Often before roasting, the ore has already been partially purified, e.g. by froth flotation.

  • Extraction of Reactive Metals Animated Science

    Zinc Iron Tin Lead stone reduction by carbon the carbon is heated with the metal oxide. (If the ore is a sulfide, it is roasted first of all to convert it to the oxide.) Copper Silver Gold Platinum can be found native and separated from rock. (Copper and silver are often found in compounds, but are easily extracted, sometimes by just

  • Extraction of Zinc from Zinc Blende Lets Learn Nepal

    Extraction process of Zinc. The important ore of Zinc is Zinc blende (ZnS). So it is extracted from zinc blende by carbon reduction process. The following are the steps involved for the extraction process of zinc. a. Crushing and Pulverization: The big lumps of ore is first crushed by a jaw crusher and powered in ball mills. b. Concentration:

  • Zinc sulfide Wikipedia

    Zinc sulfide (or zinc sulphide) is an inorganic compound with the stone formula of ZnS. This is the main form of zinc found in nature, where it mainly occurs as the mineral sphalerite. Although this mineral is usually black because of various impurities, the pure material is white, and it is widely used as a pigment. In its dense synthetic form, zinc sulfide can be transparent, and it is

  • chemical equation question? Yahoo Answers

    09/08/2015· chemical equation question? Write a balanced stone equation for the following process: zinc(II)sulfide reacts with carbon. Thanks in advance! Answer Save. 3 Answers. Relevance. Kyle . 3 years ago. 2ZnS(s)+C(s) -> 2Zn(s)+CS2(g) This is the correct equation, be careful when entering in your response on an online homework website, if you're using smartwork like I was you'll get this question

  • Zinc Roasting Furnaces Metallurgist & Mineral Processing

    Roasting Ferruginous Zinc Sulfide Ores. Mr. J. B. Keating was developing an electrolytic-zinc process for application to the ores of the Bully Hill mines of the General Electric Co. These ores consist of blende and pyrite so finely crystallized and so intimately mixed that no mechanical separation of the individual minerals had been found possible. The ore was reduced to about 60 mesh and

  • Answered: 2. The first step in the industrial bartleby

    2. The first step in the industrial recovery of zinc from the zinc sulfide ore is roasting, that is, the conversion of ZnS to ZnO by heating: 2ZnS(s) + 3O 2 (g) → 3ZnO(s) + 2SO 2 (g) ∆H = –879 kJ/mol. Calculate the heat evolved (in kJ) per gram of ZnS roasted.

  • OXIDIZING ROASTING OF ZINC SULPHIDE CONCENTRATES

    - 341 OXIDIZING ROASTING OF ZINC SULPHIDE CONCENTRATES WITH DIFFERENT IRON CONTENT Boyan Boyanov1, Alexander Peltekov1, Vilma Petkova2, 1Paisii Hilendarski University of Plovdiv, Department of

  • What is the ore of zinc called Answers

    As with many metals, pure zinc can be prepared from an ore by one of two methods. First, the ore can be roasted (heated in air). Roasting converts the ore to a compound of zinc and oxygen, zinc

  • Answered: 2. The first step in the industrial bartleby

    2. The first step in the industrial recovery of zinc from the zinc sulfide ore is roasting, that is, the conversion of ZnS to ZnO by heating: 2ZnS(s) + 3O 2 (g) → 3ZnO(s) + 2SO 2 (g) ∆H = –879 kJ/mol. Calculate the heat evolved (in kJ) per gram of ZnS roasted.

  • Zinc Sulfide an overview ScienceDirect Topics

    Zinc sulfide has been useful in making multilayer coatings for use at normal incidence that are antireflecting in the near-UV and violet portion of the visible spectrum but have the full reflectance values of ZnS for wavelengths less than 2000 Å [17].Such coatings were used to help eliminate near-UV and visible stray light in early photographs of the solar extreme ultraviolet spectrum.

  • Why is sulphide ore converted to its oxide EDUREV.IN

    The Questions and Answers of Why is sulphide ore converted to its oxide before reduction ? are solved by group of students and teacher of Class 10, which is also the largest student community of Class 10. If the answer is not available please wait for a while and a community member will probably answer this soon. You can study other questions, MCQs, videos and tests for Class 10 on EduRev and

  • Extraction of Zinc from Zinc Blende thechemshoplmxl

    01/09/2012· Zinc blende, also known as sphalerite, is the chief ore of Zinc,it consists largely of Zinc Sulfide.. Extraction of Zinc from Zinc Blende. The extraction of zinc from zinc blende consists mainly of these two following processes. Firstly, Zinc blende is crushed and heated in air.This allows the zinc sulfide in the ore to react with oxygen in the air and produce zinc oxide.

  • Roasting metallurgy Britannica

    Other articles where Roasting is discussed: history of Europe: Control over resources: mining techniques and needed initial roasting before smelting. At the same time, they were more widely available than surface deposits, and there were sources in both central and western Europe—ores in Germany, Austria, and the Czech and Slovak Republics were exploited from the early 3rd millennium

  • What is the ore of zinc called Answers

    As with many metals, pure zinc can be prepared from an ore by one of two methods. First, the ore can be roasted (heated in air). Roasting converts the ore to a compound of zinc and oxygen, zinc

  • Metallic sulphide and sodium carbonate interacting processes

    Metallic sulphide and sodium carbonate interacting processes Baimbetov B.S., Aitenov K.D., Bekisheva A.A., Abdikerim B.E. JSC "Kazakh National Research Technical University named after K.I. Satpaev Almaty, Kazakhstan E-mail: [email protected] Abstract The article deals with a review of publications and patents on interacting mechanisms of sodium and potassium carbonate hydroxide

  • why is sulphide ore roasted before reduction Chemistry

    why is sulphide ore roasted before reduction. Share with your friends. Share 5. It is easier to obtain metals from their oxides rather than sulphides. So the ore is first converted into an oxide. A sulphide ore is converted into oxide ore by roasting. Roasting process It is the process of heating the concentrated ore in the presence of excess air. Volatile impurities also get expelled. Zinc

  • Zinc sulfide stone compound Britannica

    In luminescence: Sulfide-type phosphors, activators, fluxes. The sulfides of zinc and of cadmium are the most important basic materials of sulfide-type phosphors. An important condition of getting highly efficient phosphors is that these sulfides must first be prepared to the highest possible stone purity before the necessary amount of activator can be

  • Microwave roasting and leaching of an oxide-sulphide

    The synthetic leaching of the oxide–sulphide zinc ore could be divided into two processes, phase transformation and leaching. The phase transformation process was as follows: Na 2 O 2 was mixed with the zinc ore samples at certain mass ratios, and each mixture was roasted in the microwave reactor to prompt refractory phase smelting. The leaching process involved grinding of the smelted