Calcination of limestone to produce lime is done in a __________ kiln. (A) Tunnel (B) Rotary (C) Vertical shaft (D) Both (B) and (C)

Calcination of limestone to produce lime is done in a __________ kiln.
(A) Tunnel
(B) Rotary
(C) Vertical shaft
(D) Both (B) and (C)
by

1 Answer

Answer :

(D) Both (B) and (C)
by

Related questions

Calcination of limestone is not done in a __________ kiln for producing lime. (A) Vertical shaft (B) Rotary (C) Fluidised bed (D) Fixed bed

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Last Answer : (D) Fixed bed

Thermal efficiency of a limestone calcination rotary kiln may be around __________ percent. (A) 20 (B) 40 (C) 65 (D) 80

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Last Answer : (B) 40

Calcination reaction of limestone (CaCO3 → CaO + CO2 ) goes to completion in the rotary kiln, because (A) CaO is not dissociated (B) CO2 escapes continuously (C) Of high calcination temperature (D) CaO is more stable than CaCO3

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Last Answer : (B) CO2 escapes continuously

How much temperature is maintained during quicklime manufacture in the calcination zone of the vertical shaft kiln? (A) 500°C (B) 750°C (C) 1000°C (D) 1500°C

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Last Answer : (C) 1000°C

Rotary kiln is not involved in the production of (A) Cement (B) Lime from limestone (C) Slaked lime from quick lime (D) None of these

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Last Answer : (C) Both (A) and (B)

Rotary lime kiln is an example of a/an __________ system. (A) Closed (B) Open (C) Isolated (D) Non-thermodynamic

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Cement Kiln is a (A) Rotary Kiln (B) Tunnel Kiln (C) Natural draft furnace (D) Batch furnace

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In case of calcination of limestone, CaCO3 CaO + CO2 , the addition of more of CaO will result in __________ in the concentration of CO2 . (A) No change (B) Increase (C) Decrease (D) Unpredictable from the data

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Which of the following is used for calcination of limestone and dolomite in industrial practice? (A) Fluidised bed reactor (B) Moving bed reactor (C) Fixed bed reactor (D) None of these

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