sulphide ore reactive

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Occurence of metal II

The less reactive metals which are quite low in the activity series are extracted by the reduction of their oxides by heating. Extraction of Mercury: Heating of the sulphide ore in air results in the extraction of mercury. Mercury metal is produced from the sulphide ore called cinnabar, HgS, which is actually mercury sulphide.

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Sulphidisation of oxides and oxidised sulphides and

This also demonstrates that the new iron sulphide product is highly reactive and more electrochemically active than the parent sulphide – pyrite, which start …

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Cinnabar (ore of mercury) means HgS (mercury sulphide).

Roasting of ore - as the ore is of sulphide then roasting is to be done this involves the heating of sulphide ore in the Presence of oxygen to form metal oxide and Sulphur dioxide. HgS + O2 - HgO + SO2. Further heating - as Mercury is a low reactive metal hence we can heat it's oxide to separate them. Means 2HgO+ heat - 2Hg + O2.

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Important Question for Class 10 Science Metals and Non-Metals

The highly reactive metals like Na, Mg, Al, etc. are extracted by electrolytic reduction of their molten chlorides or oxides. Electrolytic reduction is brought about by passing electric current through the molten state. Metal gets deposited at the cathode. ... Sulphide ore of a metal is first converted to its oxide to extract the metal from it.

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Leaching of a gold bearing partially roasted sulphide

Table 2 presents the results obtained by analysing 14 different size fractions from about 8 kg sample. Gold, silver and most of the usual non-ferrous metals increase in the finer fractions, mainly those smaller than 0.150 mm. Considering both the gold content in the 14 fractions and the respective mass percentage, computed average gold content is around 65 g/ton, …

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The Reaction of Anfo Explosives with Mineral Sulphides

ANFO-sulphide interaction is invariably exothermic and causes an irreversible chemical transformation of the ore.The heat generated during reaction may be dissipated, …

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Question 12 dGive reason why carbonate and sulphide ores are …

c) Aluminium is a highly reactive metal, yet it is used to make utensils. d) Carbonate and sulphide ores are usually converted into their oxides during the process of extraction. e) Copper vessels, when exposed to air, form a greenish coating all around.

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How is copper extracted from its sulphide ore? Explain the …

(i) Given below are the steps for extraction of copper from its ore. Write the reaction involved. (a) Roasting of copper (I) sulphide (b) Reduction of copper (I) oxide with copper (I) sulphide. (c) Electrolytic refining (ii) Draw a neat and well labelled diagram for electrolytic refining of copper

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Extraction of Metals Class 10 Science NCERT

Extraction of metal from an ore depends on the place it has in the reactivity series. Following points explain this. Metals found at the bottom of reactivity series are least reactive and they are often found in nature in free-state, such as gold, silver, copper, etc. Copper and silver are also found in the form of sulphide and oxide ores.

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Samacheer Kalvi 12th Chemistry Solutions Chapter 1 Metallurgy

Sodium is more reactive element than Ag, Au and Pt. VI. Find out the correct pair: Question 1. (a) Metallurgy – Extraction of metals (b) Clay – Ore of Al (c) Na – Native element ... When a sulphide ore of a metal of interest contains other metal sulphides as impurities, depressing agents such as sodium cyanide, sodium carbonate etc are ...

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Gold Recovery 101 From Sepro's Gold Recovery Experts

Sulfide-associated gold is often very fine in nature and difficult to separate from the sulfides. Refractory Gold. ... The ore can contain highly reactive minerals that consume free cyanide or oxygen. In addition, the ore can contain preg-robbing elements such as organic carbon that will re-adsorb the dissolved gold as it is leached. While the ...

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Living Science 2019 Solutions for Class 8 Science Chapter 4

Hence, metal M 3 is more reactive than metal M 4, because it displaced metal M 4 from its salt solution but metal M 4 could not displace metal M 3 from its salt solution. Page No 60: ... as carbonate ore. (c) as sulphate ore. (d) as sulphide ore. Answer: (a) in free state Gold is an inert metal and doesn't react easily, therefore, it occurs in ...

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Spontaneous combustion of sulfide ores and concentrates

This chart is logarithmic to cover the wide range of possible values that can occur for highly reactive sulfides. There are five categories identified by the chart. These …

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Statistical interpretation of flotation kinetics for a complex sulphide ore

Abstract. Kinetic flotation models were applied to data from tests with reactive gases (hydrogen and sulphur dioxide) on a complex sulphide ore. The models were evaluated by statistical techniques, after non-linear regression on the model parameters. It is found that a first order model with rectangular distribution of floatability fits the ...

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Field Examples and Mitigation Strategies for Sulphide …

Reactive blast hole modelling – Red Dog 2 Characterizing Self-heating Behaviour – the FR-2 test Stage A • 6% moisture • 70 o C • 48 hrs Stage B • Continues from Stage A • 140 o …

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Concentration of Ores

Concentration of Ores. An ore of a metal is an impure source, this means other than the metal it consists of many other impurities such as sand, grit, clay, rocks etc. These impurities are collectively known as gangue. …

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(PDF) Impact of Recycled Process Water on

A fine grind and high temperature both increase the oxidation rates of the ore. The Kevitsa ore is most reactive in the first 10–20 min after milling. ... Sulphide Ore. Minerals 2022, 12, 1455 ...

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Silicate-replacive high sulfidation massive sulfide orebodies in a

The Cu-Au deposit of Bor (Serbia) represents a continuum of mineralization styles, from porphyry-style ore occurring in quartz-magnetite-chalcopyrite veins and chalcopyrite disseminations to high-sulfidation epithermal Cu-Au ores in pyrite-chalcopyrite and anhydrite-sulfide veins. Decisive for the great economic importance of Bor is the …

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Oxidative Hydrometallurgy of Sulphide Minerals

The oxidation of sulfide ores by ozone can occur by dissolution of sulfide species and the formation sulfate ion, as suggested by Elorza et al. Then, the global reaction of the pyrite …

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The Reaction of Anfo Explosives with Mineral Sulphides

ANFO-sulphide interaction is invariably exothermic and causes an irreversible chemical transformation of the ore.The heat generated during reaction may be dissipated, heating the environment, or rapidly accumulated to yield hot spots or areas in excess of 400C. These can result in forced ignition of bulk sulphide and sustained combustion ...

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Extraction of Metals from Ores

Extraction of Mercury: Cinnabar (HgS), a sulphide ore, is the most common mercury ore. The following steps can be used to extract the metal (Hg) from the ore. Step 1: In the air, roast concentrated mercury (II) sulphide ore. Roasting is the process of turning a sulphide ore into its equivalent metal oxides by rapidly heating it in the presence ...

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Fire Assay Procedure

Matte is an artificial sulphide of metals found in the ore and/or flux. It is formed in the nitre fusion of sulphide ore when the charge is too acid. It is found just above the lead button. It may be quite thick, or it may appear simply as a granular coating on the upper surface of the lead button. It is usually blue- grey in colour, resembles ...

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Extraction of Metals: Ores, Definition, Examples

Let us illustrate the extraction of moderately reactive metals from their ore with examples. Extraction of Zinc (a) Conversion of ore into metal oxide: Zinc occurs in nature as sulphide as well as in carbonate form. Thus, these must be converted to zinc oxide before reduction. Roasting of zinc sulphide:

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Hot and / or Reactive Ground

Hot and / or reactive ground. While not common, reactive ground is potentially a highly dangerous and frequently misidentified hazard. A runaway reaction between sulphide minerals and ammonium nitrate can lead to the spontaneous and premature detonation of one or more blast holes at any time from a few minutes to several days after loading.

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Hot and / or Reactive Ground

Hot and / or reactive ground. While not common, reactive ground is potentially a highly dangerous and frequently misidentified hazard. A runaway reaction between sulphide …

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Minerals | Free Full-Text | Influence of Water Quality on Sulphide Ore

Sulphide minerals easily oxidises when in contact with oxygen and water . For ores containing pyrrhotite, the rate of oxidation is higher, since pyrrhotite is highly reactive [7,8,26,27,28,29]. The oxidation of sulphide minerals in tailings results in acid production, thereby lowering the pH . It must be noted that at the Kevitsa concentrator ...

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Heavy Metal Pollution from Gold Mines: Environmental Effects …

It occurs in the form of galena (PbS) in gold ore and this form is found when sulphide concentration of the ore is high . Lead exists in various oxidation states (0, I, II, IV) and the most stable forms are Pb(II) and lead-hydroxy complexes. ... The ionic form, Pb(II) is the most reactive and most common form which forms mononuclear and ...

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Pyrrhotite

Pyrrhotite is one of the main iron sulfide minerals and often accompanies base metal sulfides in ore deposits. Massive sulfide deposits containing pyrrhotite can be found all around the world, specifically in China, Russia, Australia, and Canada. ... Magnetic Phoenix pyrrhotite was more reactive and showed poor collector-free flotation, which ...

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Bioleaching of a low-grade ultramafic nickel sulphide ore in stirred

Bioleaching high-MgO ores is also challenging, as many magnesium silicate minerals are reactive in mildly acidic media, consuming sulphuric acid, which can be a major operational cost to a heap bioleaching operation ... the low-grade ultramafic nickel sulphide ore was subjected to stirred-tank bioleaching at pH levels from 2 to 6. The …

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Metals and Non-metals Class 10 Important Questions Science …

Write the chemical formulae of the main ores of iron and aluminium. Answer: The main ore of iron is haematite (Fe 2 CO 3) while that of aluminium is bauxite (Al 2 O 3 .2H 2 O). Question 9. Name the non-metal which can conduct electricity. Answer: Graphite, an allotropie form of carbon conducts electricity. Question 10.

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