Reverberatory furnace is used for (A) Roasting/reduction of ores (B) Annealing steel coil (C) Heating air (D) Steel melting

Reverberatory furnace is used for
(A) Roasting/reduction of ores
(B) Annealing steel coil
(C) Heating air
(D) Steel melting
by

1 Answer

Answer :

(A) Roasting/reduction of ores
by

Related questions

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Which of the following faction is of no significance for roasting sulphide ores to the oxide and not subjecting the sulphide ores in carbon reduction

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The operation of removal of impurities or clay adhering to iron ores, is known as (A) Dressing (B) Calcination (C) Roasting (D) Smelti

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In a 100 TPD Sponge Iron plant, the sponge iron is fed to the Induction melting furnace, producing molten steel at 88% yield. The Energy consumption details are as follows: Coal Consumption : 130 TPD GCV of coal : 4500 kcal/kg Power Purchased from Grid : 82400 kWh / day Specific Energy consumption for Kiln producing Sponge Iron: 120 kWh / ton sponge iron Calculate the following 1. Specific Energy Consumption of Induction melting furnace in terms of kWh/ton of molten steel 2. Specific Energy Consumption of the entire plant, in terms of kcal/kg of molten steel (product). 3. Total Energy Consumption of Plant in Tons of Oil Equivalent (TOE )

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Heating the Hypo-eutectoid steels to 30°C above the upper critical temperature line, soaking at that temperature and then cooling slowly to the room temperature to form a pearlite & ferrite structure is called (A) Tempering (B) Hardening (C) Annealing (D) Normalising

Description : Heating the Hypo-eutectoid steels to 30°C above the upper critical temperature line, soaking at that temperature and then cooling slowly to the room temperature to form a pearlite & ferrite structure is called (A) Tempering (B) Hardening (C) Annealing (D) Normalising

Last Answer : Option C

Extraction of copper is done using copper pyrites. After roasting, the ore is mixed with silica and coke and then smelted in a blast furnace. The matt

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Extraction of copper is done using copper pyrites. After roasting, the ore is mixed with silica and coke and then smelted in a blast furnace. The matt

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Extraction of copper is done using copper pyrites. After roasting, the ore is mixed with silica and coke and then smelted in a blast furnace. The matt

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Roasting of copper ore is carried out in which of the following furnace?

Description : Roasting of copper ore is carried out in which of the following furnace?

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Ball mills and tube mills with flint or porcelain balls are used for size reduction of (A) Asbestos (B) Rubber (C) Non-metallic ores (D) Limestone

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Last Answer : (C) Non-metallic ores

Size reduction of the __________ can be suitably done by ball mills, crushing rolls and rod mills. (A) Metalliferous ores (B) Non-metallic ores (C) Basic slags (D) Asbestos & mica

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Last Answer : (A) Metalliferous ores

Pick out the wrong statement: (A) Magnetic separation method can be employed to treat both dry & wet ores (B) Reduction ratio in crushing operation is defined as the ratio of minimum feed size to the maximum product size (C) Gyratory crusher is used for coarse crushing (D) Screens are of stationary, moving and vibratory types

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The heat treatment process applied to cold formed steel parts is (A) Normalising (B) Tempering (C) Artificial ageing (D) Solution annealing

Description : The heat treatment process applied to cold formed steel parts is (A) Normalising (B) Tempering (C) Artificial ageing (D) Solution annealing

Last Answer : (D) Solution annealing

The heat treatment process to which castings and the steel balls produced by cold heading are subjected is (A) Tempering (B) Normalising (C) Annealing (D) None of these

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Cold worked steel parts are normally subjected to (A) Normalising (B) Hardening (C) Annealing (D) Shot peening

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. To improve the machinability of steel, it is generally subjected to (A) Spheroidising (B) Tempering (C) Normalising (D) Annealing

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Last Answer : (A) Spheroidising

Hardened steel is softened by (A) Normalising (B) Tempering (C) Annealing (D) Carburising

Description : Hardened steel is softened by (A) Normalising (B) Tempering (C) Annealing (D) Carburising

Last Answer : (B) Tempering

Softening of hardened steel is done by its (A) Normalising (B) Tempering (C) Annealing (D) Carburising

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Last Answer : (B) Tempering

Nitriding of steel is a process for (A) Case hardening (B) Spheroidising (C) Normalising (D) Annealing

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Last Answer : (A) Case hardening

High purity nitrogen is used in (A) Making protective gas (95% N2 + 5% H2 ) for annealing of cold rolled steel strip coils (B) Fire fighting purposes (C) Both (A) & (B) (D) Neither (A) nor (B)

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Softening of hardened steel is done by its (A) Normalising (B) Tempering (C) Annealing (D) Carburising

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Last Answer : (A) Normalising

Pick out the correct statement. (A) Hot worked materials are subjected to annealing to remove internal stresses (B) Annealing of steel hardens it slightly (C) Normalising of a material induces stresses (D) Tempering of a material improves ductility & toughness but reduces hardness & brittleness

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Last Answer : (D) Tempering of a material improves ductility & toughness but reduces hardness & brittleness Share