YF Hybrid hoffman kiln for firing clay bricks,Brick oven
Yingfeng company not only provides customers with various brick making equipments, but also provides services like process design, kiln design, workshop design and project contract.Also,we have a professional team of engineers to offer best after sales service,such as, training workers,imparting technical instruction and fixing problems within one year’s warranty.
A Hoffman kiln consists of a main fire passage surrounded on each side by several small rooms. Each room contains a pallet of bricks. In the main fire passage there is a fire wagon that holds a fire that burns continuously. Each room is fired for a specific time, until the bricks are vitrified properly, and thereafter the fire wagon is rolled to the next room to be fired.
Each room is connected to the next room by a passageway carrying hot gases from the fire. In this way, the hottest gases are directed into the room that is currently being fired. Then the gases pass into the adjacent room that is scheduled to be fired next. There the gases preheat the brick. As the gases pass through the kiln circuit, they gradually cool as they transfer heat to the brick as it is preheated and dried. This is essentially a counter-current heat exchanger, which makes for a very efficient use of heat and fuel.
This efficiency is a principle advantage of the HHK, and is one of the reasons for its original development and continued use throughout history. In addition to the inner opening to the fire passage, each room also has an outside door, through which recently-fired brick is removed, and replaced with wet brick to be dried and then fired in the next firing cycle. Any fuel may be used in a HHK, including coal, gasoline, natural gas, heavy petroleum and wood fuel. The dimensions of a typical HHK are completely variable.
Inside of Hoffman kiln
Outside of hoffman kiln
The modern hoffman kiln has the following advantages: 1.low investment,low influence to environment,high capacity.
2.We can put adobes or green bricks directly into the hoffman kiln
so that we do not need to invest on the tunnel kiln. 3.The brick production will not be influenced by weather condition
Our goal is to assist you to build a modern clay brick plant which can create large value for you.
Our Running brick production video link
JZ300 Non-vacuum clay brick producing line:
JKR30 Vacuum clay brick production line with brick separator:
JKRL35 Vacuum brick production line with unloader and brick loading cars:
Our company Zhengzhou Yingfeng Machinery Co.,Ltd. located in Zhengzhou City, the capital of Henan Province.Our city is also the original place of brick making machine in China.
We are a high-tech enterprise, integrating science, industry and trade for brick and tile machinery with our brand more than 30 varieties and over 100 specifications. Now we have built more than 2000 brick production line in China and we also have sold auto clay brick machine to more than 30 countries, like India, ... View detail