Process sulfide silver ore without roasting

MJ Series Jaw Crusher

MJ Series Jaw Crusher

MJ series jaw crusher is mainly used as a coarse crushing crusher. Its purpose is to crush rocks into smaller particle sizes for subsequent processing…

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MC Series Single-Cylinder Hydraulic Cone Crusher

MC Series Single-Cylinder Hydraulic Cone Crusher

MC series single cylinder hydraulic cone crusher is used in secondary and fine crushing operations. It is widely used in metallurgy, construction, highway,…

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ML Series Vertical Shaft Impact Crusher

ML Series Vertical Shaft Impact Crusher

Vertical shaft impact crusher is often used in the final crushing circuit. Due to the ability to produce fine-grained final products, ML series vertical…

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MD Series Multi-Cylinder Hydraulic Cone Crusher

MD Series Multi-Cylinder Hydraulic Cone Crusher

MD series multi-cylinder hydraulic cone crusher is used in the second and third stages of mineral processing and stone crushing, as well as the superfine…

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MF Series Fixed Shaft Circular Vibrating Screen

MF Series Fixed Shaft Circular Vibrating Screen

In order to eliminate the phenomenon of unbalanced vibration, unstable amplitude, on/off bounce, poor screening effect, and cracking of the screen box…

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MGD Series Vibrating Feeder

MGD Series Vibrating Feeder

MGD series vibrating feeder is designed for ultra-heavy working conditions and is suitable for feeding materials to primary jaw crushers, primary impact…

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MGB series hopper discharge feeder

MGB series hopper discharge feeder

MGB series hopper discharge feeder is mainly used for the uniform, quantitative and automatic control of under-silo feeding of bulk materials.…

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MZA/K Series Circular Vibrating Screen

MZA/K Series Circular Vibrating Screen

MZA/K series circular vibrating screen produced by Meilan has an axis-eccentric circular vibrating screen, which can be used for dry and wet classification…

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  • OBORTS Company, Opposite the residence of old General Mambou, Near Dragage, Bastos, Yaoundé, Cameroon
    Email: [email protected]

  • The method of pre-roasting of sulfide ores and their

    The invention relates to analytical chemistry and is designed to remove sulfur, arsenic, antimony, and other components that complicate the process. The method of pre-roasting of sulfide ores and their processing products containing gold and silver, assay analysis involves the oxidation of ores oxygen in fireclay boats in a muffle furnace at

  • Answered: Metallic silver may be obtained from… bartleby

    Solution for Metallic silver may be obtained from sulfide ores by roasting to sulfates, leaching with water and precipitating with copper. In the diagram below,…

  • Smelting and Roasting Ores to recover gold, silver and

    The process works best when the ore is crushed to small pieces before roasting. Additives, such as common rock salt are often added to the mix before it is heated to enhance the reaction of the sulfides. Once the ores are fully roasted, and the sulfur is driven off, the extraction of the gold or silver from the ore is not especially difficult.

  • Procedure for processing sulphide gold containing arsenic

    The task is solved in that in the method for processing sulfide gold-arsenic-antimony concentrates and ores, including rihtovanie, roasting, condensation of gaseous compounds of antimony and arsenic, gold leaching of the calcine, according to the invention the mixture is prepared by mixing the concentrate or ore and chloride and/or ammonium

  • Extraction Of Silver - Mineral Processing & Metallurgy

    Jan 10, 2017· Quality of Ores fit for the Solving Process. There is no process so suitable for all kinds of ores as the solving process. Generally considered, all silver ores can be treated by the solving process which are subjected to the pan amalgamation after roasting ; but in many instances— especially with the rebellious ores— a better result is obtained by this than by working in pans.

  • Zinc processing - Ores Britannica

    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 or smithsonite (ZnCO 3).

  • Froth Flotation Method - JXSC Machine

    Dec 20, 2018· However, there are some limitations in flotation, such as ores with gold particles larger than 0.2-0.3 mm or pure quartz gold ores without metal sulfides, which are difficult to deal with by flotation separation alone. This paper introduces commonly used reagents and the flotation process of gold and silver ore for you. You may interest in 1.

  • Non-ferrous metallurgical processing Lhoist - Minerals

    Lime products play a key role in the mining and extraction of non-ferrous metals, including aluminum, copper, gold, nickel, cobalt, uranium, titanium and lithium. Lime is also important for the pyrometallurgical refining and smelting of several non-ferrous metals. In addition, lime products are used in effluent and tailings treatment, and in settling, dewatering, filtration,

  • Recovery of gold from sulfide refractory gold ore

    In this process, gold could be effectively recovered from the sulfide refractory gold ore with a recovery efficiency of 98.06%. Discover the world's research 20+ million members

  • Flexicone technology for sulfide ores flexicone

    Jan 20, 2021· This is the result of our 25 years of research into the beneficiation of ores and minerals. Flexicone Oxidation technology is a combination of fine grinding and sulfide oxidation without autoclaving, roasting and bioleaching. Also, our latest research shows that there is no need for ultrafine grinding down to 10 microns.


    ROASTING OF SULFIDE MINERALS In addition to common metals like copper, lead, zinc, and nickel a number of other metals such as antimony, bismuth, cadmium, cobalt, mercury, and molybdenum occur as sulfide minerals. Sulfides are not reduced with the most widely used redu-cing agents, carbon and hydrogen, because the free energy change for the

  • How to extract silver from sulphides?

    Jan 31, 2013· All of my silver sulfide extraction experience has been in association with either galena or several of the other copper sulfides. On a current flotation project in Mexico, the head ore contains 9 to 14 Kgs. of silver in the form of argentite (Ag-87%, S-13%), along with a lot of galena.

  • Gold Ore Roasting Techniques

    Jul 14, 2016· Tetrahedrite is often refractory even after roasting. Argentite (the silver sulphide) and cerargyrite (the chloride) can frequently be cyanided without roasting. A comprehensive description of roasting practice is to be found in a series of articles entitled “Roasting Gold-Silver Sulphide Ores and Concentrates” by M. W. von Bernewitz.

  • Salt and Silver

    Silver sulfide ore was, of course, a required ingredient, as was the mercury to accomplish the end result of amalgamation. Controversy existed, however, over the role of the salt and copper sulfate. Amounts of these substances used from mill to mill varied from one-quarter to ten pounds of one or the other, or both, per ton of ore treated.

  • GOLD AND SILVER - Records Collections

    Nevada. Roasting of sulfide ores involves heating the ores in air to convert them to oxide ores and break up their physical structure, allowing leaching solutions to penetrate and dissolve the gold. In effect, roasting oxidizes the sulfur in the ore, generating sulfur dioxide that …

  • Metallurgy Process, Definition with Examples Types of

    May 04, 2020· Roasting is the process of heating concentrated ore alone or mixed with other substances in the presence of a controlled amount of air without melting. This action is mainly used for sulfide ores. In this process, the ore is partially or completely oxidized and the impurities of sulfur and arsenic present in the ore are removed.


    The need for a new process to treat Broken Hill ore arose from the depletion of the secondary oxide ore that overlay the major sulfide mineralization. Natural oxidation to form the secondary zone had resulted in a concentration of silver and lead, and ore from this section of the ore-body could be smelted directly.

  • process sulfide silver ore without roasting

    Process Flow for Oxidation Roasting of a Copper Sulfide Ore.53 SAMPLE Weighing Cooling crucible Figure 1.11 33.33 1. Page 2 of 6 . Weight of the ore after roasting at 700°C TRIAL I 1 (15 minutes) grams 2 (30 minutes) grams 3 (45 minutes) grams 4 (60 minutes) grams 23.05 10.

  • Silver mining - Wikipedia

    Silver-bearing ore typically contains very little silver, with much higher percentages of copper and lead. As such, most silver produced is refined from sulfide ores such as galena (lead) or chalcopyrite (copper) which contain small amounts of silver. Many of these ores are mined for their value as sulfide ores, and silver is extracted as a valuable by-product, however, some ores are mined

  • Silver Ore - The Mining Processes that Transform Ore into

    Dec 18, 2016· The process is most popular with many miners because it is low cost, especially when processing low-grade ores. To use the cyanide process the silver being in the ore should have smaller particles, should be able to react with the cyanide solution, the silver should be free from sulfide minerals and other foreign substances.

  • US5074910A - Process for recovering precious metals from

    The present invention is a process to recover precious metals from sulfide ores. It involves chlorinating a mixture of an ore concentrate and salt to form a liquid melt. The salt preferably contains potassium chloride. This chlorination is carried out at a temperature between 300° and 600° C. while stirring. The process converts precious metals in the elemental and sulfide forms into

  • Roasting metallurgy Britannica

    The most important operations are roasting, smelting, and refining. Roasting, or heating in air without fusion, transforms sulfide ores into oxides, the sulfur escaping as sulfur dioxide, a gas. Smelting (q.v.) is the process used in blast furnaces to reduce iron ores. Tin, copper, and lead ores …

  • Process to Recover Gold from Sulfide Ores - GOLD

    May 27, 2016· I'm hoping our HEPP process can either eliminate or significantly reduce the roasting step (12-18 hours at 600-700 degrees C), which is currently required for the recovery of precious metals from sulfide laden ores. If so, our process consumes a fraction (4 cents per ton) of the energy of roasting.

  • Solved: 7-35. Metallic Silver May Be Obtained From Sulfide

    Metallic Silver May Be Obtained From Sulfide Ores By Roasting To Sulfates, Leaching With Water, And Precipitating The Silver With Copper. I Process, Involving The Chemical Reaction Is This Latter That We Wish To Consider Here. In The System Illustrated In Figure 7.35, The Product Leaving The Second Separator Contains 90% (by Weight) Silver And


    The ore bodies: Coka Marin, Tenka and Blagojev Kamen, in Eastern Serbia, contain polymetallic sulfide minerals rich in precious metals: silver and gold. Basically, these minerals contain: chalcopyrite, CuFeS2, pyrite, FeS2, as well as lead and zinc sulfide. Oxidation roasting of sulfide compound is the first stage of processing sulfide

  • CN1041946C - Wet type copper smelting-extracting process

    The present invention relates to a wet method copper smelting and extracting technology for copper ores, which has the characteristics of simple technology, low energy consumption, little pollution, etc., and can be used for processing copper ores of various varieties and grades. The present invention provides a leaching mode, the leaching medium of the leaching mode is H2O-H2SO4 monochloro

  • Copper Smelting Chemistry Tutorial - AUS-e-TUTE

    Roasting : reduces impurities in the copper ore and produces calcine (a mixture of products) * Concentrated (enriched) ore is heated to between 500 o C and 700 o C in air. Some impurities in the ore, such as arsenic and antimony, are oxidized and form volatile gases which can be removed: 4As + 3O 2(g) → 2As 2 O 3(g) 4Sb + 3O 2(g) → 2Sb 2 O 3(g)

  • Enhanced methods for nickel recovery from low-grade ores

    The process steps of the two methods of magmatic sulfide ores can be found in Figure 4. Chlorine and acid leaches can also be used to separate and concentrate the nickel, with the final step of hydrometallurgy being electrowinning. Fig. 4: Flow Sheet of the Processing of Magmatic Sulfide Ores (Natural Environment Research Council, 2008)

  • Rebellious Ores: Sulfides, Selenides and Tellurides

    Here, the first miners found rich oxidized silver chloride ores on the surface, some of them running as high as 1000 ounces per ton. That surface ore presented no real problems in milling, so the miners installed the Washoe pan process already in use at ia City and started to pull the silver out of their ores.

  • Recovering Silver from Sulphide Concentrates

    Let it cool and clean the carbon scale off the outside now you should have process-able gold/silver mix. If you have high gold content sulphide ore you should see a nice gold looking bar if not it may have been mostly silver. If you’re processing a high sulphide content gold ore this will not work.


    The ore bodies: Coka Marin, Tenka and Blagojev Kamen, in Eastern Serbia, contain polymetallic sulfide minerals rich in precious metals: silver and gold. Basically, these minerals contain: chalcopyrite, CuFeS2, pyrite, FeS2, as well as lead and zinc sulfide. Oxidation roasting of sulfide compound is the first stage of processing sulfide

  • Methods of Processing of the Gold-Containing Refractory

    up to 96%, and silver - 70%, although after roasting at 6000C the degree of extraction of silver is higher and is 82.4%, gold – 87.2%. This is due to the fact, that oxidative roasting of silver is optimal at 6000C that ensures the destruction of both simple and com-plex sulfides of silver and opening of its surface.

  • Sulfide Ore Processing « TCB Metals and Refining

    Instead of relying on autoclaves or roasting to prepare a sulfide ore for traditional leaching, our vibratory grinder on our circuit allows our leach to make contact with the precious metal encapsulated in the sulfide so leaching can occur. With the aggressive nature of our leach allowing us to process most ores in an hour, our process allows

  • process sulfide silver ore without roasting Mobile

    process sulfide silver ore without roasting heavy industry is specialized in the design, manufacture and supply of crushing equipment used in mining industry.

  • 9.2. - Caveman Chemistry

    Sulfide ores must be roasted to remove sulfur. In roasting, the ore is heated in an oxidizing atmosphere. Sulfides are oxidized by the oxygen in the air and the sulfur combines with oxygen, the bejeezus coming off as sulfur dioxide gas as shown in Equation 9-2. What remains are metal oxides, which may be smelted with charcoal as previously

  • Roasting of gold and silver ores : and the extraction of

    Roasting of gold and silver ores : and the extraction of their respective metals without quicksilver Item Preview > remove-circle Share or Embed This Item. Share to Twitter. Share to Facebook. Share to Reddit. Share to Tumblr. Share to Pinterest. Share via email.