Sales Inquiry

sulfuric acid processing of zinc ore

  • Process of sulfuric acid leaching silicated zinc ores

    A process of leaching silicated zinc ores with sulfuric acid in which the ore is reacted at elevated temperature with at least a stoichiometric amount of sulfuric acid, treating products of the reaction with a predetermined quantity of hot water, filtering the zinc sulfate solution from precipitated silica, washing with a further predetermined quantity of hot water (the total amount of hot .

  • What ores of pure metal use sulfuric acid in the process .

    Apr 24, 2017 · To start, "ore of pure metal" is a bit contradictory. Ore as a term implies that the substance is a metal-containing compound, which is why ores need to be either thermally or chemically (or both) processed in order to extract the metal. For examp.

  • US7387767B2 - Recovery of nickel, cobalt, iron, silica .

    A process for recovering nickel and cobalt values from nickel- and cobalt-containing laterite ores as an enriched mixed nickel and cobalt sulphide intermediate and for producing nickel and cobalt metal from the nickel and cobalt sulphide intermediate. The laterite ore is leached as a slurry in a pressure acid leach containing an excess of aqueous sulphuric acid at high pressure and temperature .

  • Zinc processing - Ores | Britannica

    Zinc processing - Zinc processing - Ores: Zinc ores are widely distributed throughout the world, although more than 40 percent of the world's output originates in North America and Australia. The common zinc-containing minerals are the zinc sulfide known as zinc blende or sphalerite (ZnS), a ferrous form of zinc blende known as marmatite [(ZnFe)S], and a zinc carbonate known as calamine .

  • Silver processing | Britannica

    Silver processing, preparation of the ore for use in various products. Silver has long been valued for its white metallic lustre, its ability to be readily worked, and its resistance to the corrosive effects of moisture and oxygen. The lustre of the pure metal is due to its electron configuration,

  • How to Extract Precious Metals From Sulfides | Sciencing

    Employ bioleaching for base metals, such as zinc, copper and nickel, or mineral bioxoidation to enhance extraction of gold and silver. Both methods rely on bacterium, such as hiobacillus ferrooxidans, to recover precious metals. For example, stack ore in piles 200 feet deep. Apply water-diluted sulfuric acid to enable bacterium to grow.

  • Process of sulfuric acid leaching silicated zinc ores .

    Jan 24, 1978 · A process of leaching silicated zinc ores with sulfuric acid in which the ore is reacted at elevated temperature with at least a stoichiometric amount of sulfuric acid, treating products of the reaction with a predetermined quantity of hot water, filtering the zinc sulfate solution from precipitated silica, washing with a further predetermined quantity of hot water (the total amount of hot .

  • Sulfuric Acid Leaching on Low Grade Oxide Ore

    In this paper, sulfuric acid leaching was carried out to assess the effect of several parameters on metal extraction in a low grade complex gossan ore in which the grade of zinc and iron is 13% and 40.2%, respectively. Parameters, such as sulfuric acid concentration, liquid to solid ratio and leaching temperature, were studied. The results show that the zinc leaching rate is almost 80%, while .

  • Refining Gold with Sulphuric Acid

    Metallurgical ContentParting Gold-Silver Alloy with Sulphuric AcidGold-Zinc AlloysGold, Silver, and SodiumEffect of Tellurium on PartingParting of Gold and Silver CommerciallyThe Gutzkow Refining Process Pure silver is readily attacked by strong hot sulphuric acid .

  • Copper Ore Types: Sulfides vs. Oxides | An Investor's .

    These copper oxide ores are usually leached using sulfuric acid to liberate the copper . heap leach process to oxidize the sulfides to sulfuric acid. . amounts of zinc instead of iron ore .

  • Zinc - Essential Chemical Industry

    However, any iron sulfide present in the ore will be converted to iron(III) oxide, which reacts with zinc oxide to form zinc ferrite: In the simple leaching process, this zinc cannot be easily recovered and so ores with low iron content are preferable. The sulfur dioxide is often converted to sulfuric acid in a plant adjacent to the smelter.

  • Mining Of Zinc - Zinc

    At first, the zinc ore is crushed in the zinc mining equipment and the zinc ore is miledl after it is moved to the crushing place. The raw material used for the production of zinc is zinc concentrate, which is the result of a flotation process after the ore has been mined and crushed.

  • sulfuric acid ore

    Germanium Gallium Ore Leaching with Sulfuric Acid. Sulfuric acid leaching of Apex ore was initially tested at 20% solids for 2 hr at 80°C. Figure 1 shows the effect of increasing the initial sulfuric acid concentration on germanium, gallium, and iron extraction.

  • sulfuric acid copper leaching - YouTube

    Sep 02, 2016 · The zinc pressure leach process depends upon the react with sulfuric acid and oxygen to produce metal Gold Leaching, Gold Recovery from Natural Gold Rocks & Ore .

  • Sulfuric acid history | ML2R consultancy

    Apr 26, 2017 · Sulphuric acid (American English: Sulfuric), H 2 SO 4, is a strong mineral acid.It can form any concentration in water. The old name for sulphuric acid is oil of vitriol. When high concentrations of SO 3 are added when making the acid, a solution of SO 3 in H 2 SO 4 results. This is called fuming sulphuric acid or Oleum or Nordhausen acid.

  • Heap leaching - Wikipedia

    This method is an acid heap leaching method like that of the copper method in that it utilises sulfuric acid instead of cyanide solution to dissolve the target minerals from crushed ore. The amount of sulfuric acid required is much higher than for copper ores, as high as 1,000 kg of acid per tonne of ore, but 500 kg is more common.

  • Copper Mining and Processing: Processing of 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 .

  • Zinc smelting - Wikipedia

    Zinc smelting is the process of converting zinc concentrates (ores that contain zinc) into pure zinc. Zinc smelting has historically been more difficult than the smelting of other metals, e.g. iron, because in contrast, zinc has a low boiling point.At temperatures typically used for smelting metals, zinc is a gas that will escape from a furnace with the flue gas and be lost, unless specific .

  • US4070260A - Process of sulfuric acid leaching silicated .

    A process of leaching silicated zinc ores with sulfuric acid in which the ore is reacted at elevated temperature with at least a stoichiometric amount of sulfuric acid, treating products of the reaction with a predetermined quantity of hot water, filtering the zinc sulfate solution from precipitated silica, washing with a further predetermined quantity of hot water (the total amount of hot .

  • Sulphuric acid leaching of zinc and copper from Nigerian .

    Sulphuric acid leaching of zinc and copper from Nigerian Complex Sulphide Ore in the presence of hydrogen peroxide by P.A. Olubambi*†, J.O. Borode†, and S. Ndlovu* Synopsis The leaching of zinc and copper from Nigerian bulk sulphide ore with sulphuric acid in .

  • Sulfuric acid | H2SO4 - PubChem

    It is highly corrosive. USE: Sulfuric acid is an important commercial chemical used to make fertilizers, explosives, dyestuffs and other chemicals. It is used in petroleum refining, ore processing, paper manufacturing, battery manufacturing, leather industries, printing and jewelry making.

  • ore processing sulfuric acid

    ore processing sulfuric acid. Copper Mining and Processing: Processing of Copper . 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 .

  • FOCUS: Sulfuric acid oversupply to persist as Chinese .

    During the process of smelting concentrates into metal, one tonne of copper output generates three tonnes of sulfuric acid, while one tonne of zinc output generates two tonnes of acid. With the expansion of primary smelting capacity, Chinese sulfuric acid capacity is also forecast to grow by 1.06 million tonnes per year in.

  • 2ZnS 3O 2ZnO SO2 (1) - US EPA

    Zinc metal is deposited at the cathode and sulfuric acid is regenerated for recycle to the leach process. The sulfuric acid acts as a catalyst in the process as a whole. Electrolytic zinc smelters contain as many as several hundred cells. A portion of the electrical energy is converted into heat, which increases the temperature of the electrolyte.

  • Sulfuric Acid - Agricultural Marketing Service

    47 Sulfuric acid is one of the primary chemical agents of "acid rain" (ATSDR, 2004). Because it is not very 48 volatile, sulfuric acid from sources of air pollution are often found in the air as microscopic liquid droplets 49 or are attached to other small particles in the air (HSDB, 2010). Atmospheric deposition of sulfuric acid

  • Almalyk MMC - Zinc - Sulphuric Acid

    The copper-gold-molybdenum productive facilities are represented by the operating open-pits of Kalmakir, Sari-Cheku, by the Chadaksky and Angrensky mine managements, by the Kauldy mine, copper concentrator and copper smelter with its sulphuric acid installations. The lead-zinc production line is represented by the Uch-Kulach mine with its .

  • Cadmium: processing-Metalpedia

    In the hydrometallurgical process, zinc, copper and cadmium are dissolved in the sulfuric acid leach of the roasted zinc ore. The copper and cadmium are among the most common interfering impurities that are removed before the purified solution is subjected to electrolysis for zinc recovery.

  • Kinetics of Sulfuric Acid Leaching of Brass

    In addition, temperature had a more significant effect on the rate of copper extraction than on zinc extraction. Acid concentration, on the other hand, had very little effect on the rate of copper dissolution. For example, in 0.1M sulfuric acid- 50% of the copper was solubilized in 165 minutes at 65 C, (Figure 1).

  • Kinetics of sulfuric acid leaching of low-grade zinc .

    Sulfuric acid from Fischer Scientific was used in this study. It has a concentration of 95% and a density of 1.83 g/ml. The reaction between zinc ore and sulfuric acid was performed in a 500-ml round-bottom flask placed in a thermostatically controlled water bath. The reaction mixture was agitated at a .

  • Zinc ore (zinc sulfide) is treated with sulfuric acid .

    Sep 13, 2008 · Zinc ore (zinc sulfide) is treated with sulfuric acid, leaving a solution with some undissolved bits of material and releasing hydrogen sulfide gas. If 10.7 g of zinc ore is treated with 48.9 mL of sulfuric acid (density 1.153 g/mL), 62.1 g of solution and undissolved material remains. In addition, hydrogen sulfide (density 1.393 g/L) is evolved.