Method for producing quick lime through brickmaking waste heat

A quicklime and waste heat technology, which is applied in lime production, ceramic material production, lighting and heating equipment, etc., can solve the problems of occupying brick space, long process time, and reducing brick production, so as to reduce heat energy emissions, increase economic benefits, reduce The effect of heat loss

Inactive Publication Date: 2017-01-18
JIEXIU UNIVERSE BUILDING MATERIALS CO LTD
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This method takes a long time to process, occ...

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  • Method for producing quick lime through brickmaking waste heat
  • Method for producing quick lime through brickmaking waste heat
  • Method for producing quick lime through brickmaking waste heat

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[0013] A method for producing quicklime by using brick-making waste heat of the present invention, the first step is to stack the bricks on the kiln car, and the number of stacks for each kiln car depends on the size of the kiln car. The kiln car used in the existing large-scale tunnel kiln can be Stack adobe stacks of 3x4 quantities. The second step is to push the kiln car with the adobe stacked into the tunnel kiln. The first thing to enter is the moisture removal section. This section has a temperature of 80-100°C and after 8-10 hours, the hot air will dehydrate the adobe to about 3-5%. The load-bearing capacity of the adobe is greatly increased. The kiln car then enters the preheating section. The top of the tunnel kiln in this section is provided with feeding holes corresponding to the distance between the piles of bricks on the kiln car. At the same time, a mineral material conveying system is set up on the top of the tunnel kiln. 20cm of limestone is paved on the top o...

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Abstract

The invention discloses a method for producing quick lime through brickmaking waste heat. Green bricks are stacked on a kiln car and sequentially pushed into a tunnel kiln, the kiln car enters a green brick preheating segment after being dried through hot air in a moisture eliminating segment of the tunnel kiln, and limestone with the grain size ranging from 5 cm to 20 cm is paved to the top of a green brick stack from a kiln crown feeding hole; the temperature of a firing segment ranges from 900 DEG C to 1,200 DEG C, the standing time ranges from 2 h to 4 h, and the kiln car enters a cooling segment; and the kiln car comes out of the kiln after being cooled. According to the method for producing the quick lime through the brickmaking waste heat, a certain quantity of quick lime can be produced through the brick firing waste heat while the brick yield is not decreased. Heat energy losses are reduced, product varieties are increased, economic benefits are improved, and each kiln car can produce 1.8 ton of quick lime every day. Meanwhile, heat energy discharge is reduced, and the environment is protected.

Description

technical field [0001] The invention relates to a method for burning quicklime by utilizing the residual heat of brick making in conjunction with the brick firing process, in particular to a method for producing quicklime by utilizing the residual heat of brick making. Background technique [0002] A large amount of waste heat generated in the process of firing bricks has always been one of the important goals of waste heat utilization, energy saving and emission reduction, and the recovery or utilization of waste heat generated by firing red bricks, especially the use of coal gangue to fire red bricks, requires a large investment and equipment occupies There are many problems such as large land and poor economic benefits. Therefore, most enterprises still waste a lot of waste heat or only recycle a small part. Cause a lot of waste of energy. Chinese patent 931108446 discloses a "method for roasting non-polluting fine lime by utilizing coal gangue brick-making waste heat", ...

Claims

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Application Information

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IPC IPC(8): F27B9/00F27B9/38C04B2/10
CPCC04B2/10F27B9/00F27B9/38F27B2009/382Y02P40/40Y02P40/60
Inventor 郞衍平
Owner JIEXIU UNIVERSE BUILDING MATERIALS CO LTD
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