Zinc Main ores; I Zinc blende; ZnS II Calamine; ZnCO ₃ Extraction Is done by electrolysis or reduction of its oxide using carbon Preliminary steps The ore is first concentrated by froth floatation The ore is roasted in air to convert it to the oxide Equations From Zinc blende 2ZnS s 3O ₂ g → 2ZnO s 2SO ₂ g
The extraction of zinc from zinc blende consists of the following steps roasting the ore leaching the roasted product and finally the purification of zinc by electrolysis or by reduction with a suitable agent Among the options provided roasting followed by reduction with carbon is a commonly used method
4 Zinc is obtained from the ore zinc blende Zns a Describe the extraction of zinc from its ore zinc blende Include at least one balanced equation in your description b State two major uses of zinc 12]
Q Extraction of zinc from zinc blende is achieved by 2117 147 IIT JEE IIT JEE 2007 General Principles and Processes of Isolation of Elements Report Error
The problem can be overcome by spraying the zinc vapour with lead as it escapes the top of the furnace This action cools and dissolves the zinc so rapidly that reoxidation of metal is minimal The zinc then separates out as a liquid of nearly $$99% $$ purity and is fur refined by Vaccum distillation to give a purity of $$% $$
The amount of % zinc extraction was found using 30% D2EHPA concentration at two stages solvent extraction Figure 7 McCabe Thiele plot of the extraction of zinc with 33% v/v D2EHPA
% was obtained with the 2 stages extraction system composed of 30 vol% D2EHPA as extractant The overall Zn recovery from the ore was % Therefore an appropriate solution containing
JEE Advanced 2007 Extraction of zinc from zinc blende is achieved by A electrolytic reduction B roasting followed by reduction with carbon C
It indicates that the zinc extraction rate increases from % to % with the increase in the total ammonia concentration from M to M When the acid concentration was greater than M the recovery of zinc first reached the maximum value and then decreased slightly However when production practice and economic benefits are
Ask a Question Explain the main points in the extraction of zinc from zinc blende ← Prev Question Next Question →
Pyrometallurgical Production of Zinc Metal Non ferrous extraction metallurgy essentially refers to the production of metal directly from a sulfide without relying on intermediate chemical reactions that form the metal oxide Warner 2009 In all smelting processes the first step is to roast the concentrate to a calcine to convert the ZnS
zinc blende ZnS calamine ZnCO 3 Extraction of Zinc from zinc blende Concentration of the ore by floatation method; The finely pulverized ore is mixed with water containing frothing agent s Air is blown into the mixture froth is produced and the earthly material is wetted and sinks
3 The steps involved in the extraction of zinc are 1 Concentrated carbonate of zinc is converted to its oxide by calcination In this process zinc carbonate ore is strongly heated in the absence of air to produce zinc oxide and carbon dioxide gas
zinc blende ZnS calamine ZnCO 3 Extraction of Zinc from zinc blende Concentration of the ore by floatation method; The finely pulverized ore is mixed with water containing frothing agent s Air is blown into the mixture froth is produced and the earthly material is wetted and sinks
Solution For Which compounds are released by the extraction of zinc from zinc blende and by respiration World s only instant tutoring platform Search Instant Tutoring Private Courses Explore Tutors Login Student Tutor Grade 10 Chemistry Metals Extracting metals from their ores Which compounds are released by the extraction of zinc from
STATEMENT 1 Extraction of zinc from sphalerite ore involves the roasting followed by reduction with coke STATEMENT 2 Zinc can be commercially extracted by hydrometallurgy View Solution
Q Extraction of zinc from zinc blende is achieved by 1840 160 AIEEE AIEEE 2012 General Principles and Processes of Isolation of Elements Report Error
Extraction of Zinc Zn is extracted from zinc blende ore The ore is concentrated by froth floatation process Concentrated ore is roasted to give 3O2 → 2ZnO 2SO2 ↑The zinc oxide is mixed with coke and clay and brickettes are made The brickettes are heated at 673 K to give metal is distilled off and collected by rapid chilling
The most significant zinc bearing minerals include Zincite ZnO Smithsonite ZnCO3 Sphalerite ZnS and Franklinite These minerals are found in association with other base metals such as copper and lead in ores Extraction of Zinc Zn Zinc is extracted primarily from its ore zinc blende ZnS which involves three main stages
Extraction of Zinc from Zinc BlendeZinc is commonly extracted from its ore zinc blende ZnS using a combination of roasting and reduction processes The correct answer to the question is option B which states that the extraction is achieved by roasting followed by reduction with carbon Let s explore this process in detail Roasting of Zinc Blende ZnS 1
