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Askmemetallurgy Official
Askmemetallurgy Official
Asked: February 25, 2022In: Mineral Processing & Non-ferrous Metallurgy

GATE MT 2022 Q42

A sieve made of steel wire of diameter 53 µm has an aperture size of 74 µm. Its mesh number is  ______ . (round off to the nearest integer).

A sieve made of steel wire of diameter 53 µm has an aperture size of 74 µm. Its mesh number is  ______ . (round off to the nearest integer).

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Askmemetallurgy Official
Poll
Askmemetallurgy Official
Asked: February 25, 2022In: Mineral Processing & Non-ferrous Metallurgy

GATE MT 2022 Q23. Match the following mineral processing operations (Column I) with the corresponding physical principles (Column II)

Poll Results

100% (A) P - 2, Q - 4, R - 1, S - 3 ( 2 voters )
0% (B) P - 2, Q - 3, R - 1, S - 4
0% (C) P - 3, Q - 1, R - 4, S - 2
0% (D) P - 1, Q - 4, R - 2, S - 3
Based On 2 Votes

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Askmemetallurgy Official
Askmemetallurgy Official
Asked: February 24, 2022In: Mineral Processing & Non-ferrous Metallurgy

GATE MT 2022 Q3

Magnesium treatment is carried out  to produce ________ cast iron.

Magnesium treatment is carried out  to produce ________ cast iron.

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Askmemetallurgy Official
Poll
Askmemetallurgy Official
Asked: February 24, 2022In: Mineral Processing & Non-ferrous Metallurgy

GATE MT 2022 Q2

Poll Results

0%(A) smelting reduction of TiO2
0%(B) thermal dissociation of TiH2
100%(C) reduction of TiCl4 by Mg ( 4 voters )
0%(D) reduction of TiO2 by H2
Based On 4 Votes

Titanium is produced commercially by

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Dhaval dave
Dhaval dave
Asked: August 24, 2021In: Mineral Processing & Non-ferrous Metallurgy

how can we calculate melt loss and Operational loss calculate?

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Ashish lisu
Ashish lisuIron
Asked: July 8, 2021In: Mineral Processing & Non-ferrous Metallurgy

what is pidgeon process? why is fero silicon Used in pidgeon process instead of pure silicon? what effect does Fe has on the process? in p

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digbijaya igit
digbijaya igitPlatinum
Asked: June 26, 2021In: Mineral Processing & Non-ferrous Metallurgy

solve

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solve
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digbijaya igit
digbijaya igitPlatinum
Asked: June 24, 2021In: Mineral Processing & Non-ferrous Metallurgy

Can anyone share some notes of mineral processing from GATE point of view?

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Askmemetallurgy Official
Poll
Askmemetallurgy Official
Asked: June 16, 2021In: Mineral Processing & Non-ferrous Metallurgy

Which is the most abundant ferrous metal present in the earth’s crust

Poll Results

36.25%Aluminium ( 29 voters )
58.75%Iron ( 47 voters )
3.75%Nickel ( 3 voters )
1.25%Cobalt ( 1 voter )
Based On 80 Votes

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Askmemetallurgy Official
Askmemetallurgy Official
Asked: March 6, 2021In: Mineral Processing & Non-ferrous Metallurgy

GATE MT 2021 Q16. If 𝑬𝒐 Ni𝟐+/ Ni = – 0.25 V, the value of µ𝒐 Ni𝟐+ (in J mol-1) at 298 K is: (rounded off to to nearest integer) Given: F = 96500 C mol-1

    

    

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Askmemetallurgy Official
Poll
Askmemetallurgy Official
Asked: March 6, 2021In: Mineral Processing & Non-ferrous Metallurgy

GATE MT 2021 Q13. Which one of the following is a hydrometallurgical operation?

Poll Results

4.55%(A) Roasting ( 6 voters )
88.64%(B) Leaching ( 117 voters )
3.79%(C) Zone refining ( 5 voters )
3.03%(D) Smelting ( 4 voters )
Based On 132 Votes

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m.shafiei
m.shafiei
Asked: January 31, 2021In: Mineral Processing & Non-ferrous Metallurgy

How to lower anthracite sulfur

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Jaya Prakash Behera
Jaya Prakash Behera
Asked: January 2, 2021In: Mineral Processing & Non-ferrous Metallurgy

A zinc concentrate analyzing 68% ZnS, 4% PbS, 2% CdS, 5% FeS, 4% FeS2, 10% SiO2 and 7% H2O is roasted in fluid-bed roaster. The roasted product contains CdO, Fe2O3, PbO, PbSO4, SiO2, ZnO and ZnO.Fe2O3. Lead is evenly distributed between PbO and PbSO4. Find: (a) The theoretical air requirement

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Ankit Singh Bharadwaj
Ankit Singh BharadwajCopper
Asked: July 20, 2020In: Mineral Processing & Non-ferrous Metallurgy

What is role of sand in sintering of iron ore?

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Ankit Singh Bharadwaj
Ankit Singh BharadwajCopper
Asked: July 16, 2020In: Mineral Processing & Non-ferrous Metallurgy

Is dolochar or semi coke same ?

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Hansrajsoni
HansrajsoniIron
Asked: July 13, 2020In: Mineral Processing & Non-ferrous Metallurgy

How to refine gold jewellery by aqwa rezia

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Hansrajsoni
HansrajsoniIron
Asked: July 13, 2020In: Mineral Processing & Non-ferrous Metallurgy

How to deposit silver from silver naitret by electroplated

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Hansrajsoni
HansrajsoniIron
Asked: July 13, 2020In: Mineral Processing & Non-ferrous Metallurgy

How to a Mixer alloys of gold silver copper and zinc remove only zinc from this mixer

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Askmemetallurgy Official
Askmemetallurgy Official
Asked: July 3, 2020In: Mineral Processing & Non-ferrous Metallurgy

GATE MT 2017 Q33.

A zinc electrowinning cell is being operated at a current of 400 A, voltage of 3.5V, and a cathodic current efficiency of 90%, the specific energy consumption (in kg KJ-1 zinc) is _____. (answer up to two decimal places) Given Atomic ...Read more

A zinc electrowinning cell is being operated at a current of 400 A, voltage of 3.5V, and a cathodic current efficiency of 90%, the specific energy consumption (in kg KJ-1 zinc) is _____. (answer up to two decimal places)

Given Atomic weight of zinc =65

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Askmemetallurgy Official
Askmemetallurgy Official
Asked: June 28, 2020In: Mineral Processing & Non-ferrous Metallurgy

GATE MT 2017 Q6.

The sieve analysis of ground quartz particles is given in the table below: The cumulative mass fraction ...Read more

The sieve analysis of ground quartz particles is given in the table below:

2017 8

The cumulative mass fraction of particles of size less than 1.68mm is ________. (answer up to two decimal places)

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Askmemetallurgy Official
Poll
Askmemetallurgy Official
Asked: June 23, 2020In: Mineral Processing & Non-ferrous Metallurgy

GATE MT 2018 Q32. Match the metal in Group 1 with the appropriate extractive process in Group 2

Poll Results

5.56%A ( 2 voters )
2.78%B ( 1 voter )
72.22%C ( 26 voters )
19.44%D ( 7 voters )
Based On 36 Votes

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GATE MT 2018 Q32. Match the metal in Group 1 with the appropriate extractive process in Group 2
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Askmemetallurgy Official
Askmemetallurgy Official
Asked: June 22, 2020In: Mineral Processing & Non-ferrous Metallurgy

GATE MT 2018 Q30

What is the voltage required to electrolytically refine impure copper of activity 𝑎𝐶𝑢 = 0.9 (Raoultian standard state) to pure copper at 300 K? Given: Gas constant R = 8.314 J mol– 1 K– 1, and Faraday’s constant F = ...Read more

What is the voltage required to electrolytically refine impure copper of activity 𝑎𝐶𝑢 = 0.9 (Raoultian standard state) to pure copper at 300 K?

Given: Gas constant R = 8.314 J mol– 1 K– 1, and Faraday’s constant F = 96500 C mol -1.

(A) 1.36 mV                (B) 2.72 mV               (C) 0 mV                             (D) 5.44 mV

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Askmemetallurgy Official
Poll
Askmemetallurgy Official
Asked: June 17, 2020In: Mineral Processing & Non-ferrous Metallurgy

GATE MT 2018 Q4. In froth flotation, the primary purpose of adding collectors is to:

Poll Results

63.51%(A) make the surface of the mineral hydrophobic. ( 47 voters )
18.92%(B) make the surface of the mineral hydrophilic. ( 14 voters )
16.22%(C) stabilize the froth. ( 12 voters )
1.35%(D) adjust the pH. ( 1 voter )
Based On 74 Votes

Participate in Poll, Choose Your Answer.

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Answer
haldershubham
haldershubham
Asked: June 16, 2020In: Mineral Processing & Non-ferrous Metallurgy

Why Ferrosilicon is used as a reducing agent in Pidgeon Process instead of using only silicon?? What is the role of Iron in the Pidgeon process??

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Askmemetallurgy Official
Askmemetallurgy Official
Asked: June 14, 2020In: Mineral Processing & Non-ferrous Metallurgy

GATE 2019 Q40

100 Metric tons of copper concentrate containing 21 wt.% Cu is to be processed in 6 months with 25 working days per month and 8 working hours per day. The concentrate is leached by sulphuric acid and electrolyzed in 10 ...Read more

100 Metric tons of copper concentrate containing 21 wt.% Cu is to be processed in 6 months with 25 working days per month and 8 working hours per day. The concentrate is leached by sulphuric acid and electrolyzed in 10 cells arranged in series. The minimum current  rating  (Ampere  per  month  per  cell,  rounded  off  to   the   nearest   integer)   is ______.Given: Faraday constant = 96500 𝐶𝑜𝑢𝑙𝑜𝑚𝑏 𝑝𝑒𝑟 𝑔𝑟𝑎𝑚 𝑒𝑞𝑢𝑖𝑣𝑎𝑙𝑒𝑛𝑡. Atomic weight of copper is 63.

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