Difference between clamp burning and kiln burning of Bricks

We had already discussed about the Manufacturing of Bricks in the last articles, so now in this articles we are going to discuss about difference between clamp burning and kiln burning.

Comparison between Clamp Burning and Kiln Burning

Factors	Clamp Burning	Kiln Burning
Capacity	It is possible to prepare approx. 20000 to 100000 bricks at a time.	Average 25000 bricks can be prepared per day.
Cost of fuel	Cost is Low as grass, cow dung, litter, etc. may be used.	Cost is high as coal dust is to be used.
Initial cost	Initial cost is very low as no structures are to be built.	Initial cost is more as permanent structures are to be constructed.
Quality of bricks	Percentage of good quality bricks is small about 60% or so.	Percentage of good quality bricks is more about 90% or so.
Regulation of fire	It is not possible to control or regulate fire during the process of burning.	Fire is under control throughout the process of burning.
Skilled Supervision	Not necessary throughout the process of burning.	Continuous skilled supervision is necessary.
Structure	Temporary structure are used.	Permanent structure are used.
Suitability	Clamp burning is suitable when bricks are to be manufactured on a small scale and when the demand of bricks is not continuous.	Kiln burning is suitable when bricks are to be manufactured on a large scale and when there is continuous demand of bricks.
Time of Burning and Cooling	It requires about 2 to 6 months for burning and cooling of bricks.	Actual time for burning of one chamber is about 24 hours and only about 12 days are required for cooling of bricks.
Wastage of heat	There is considerable wastage of heat from top and sides and hot flue gas is not properly utilized.	Hot flue gas is used to dry and preheat raw bricks. Hence wastage of heat is the least.

I hope you liked this article, also read the following articles on Bricks Manufacturing.