What red brick has the best quality?

Clay red brick, shale red brick, gangue red brick, etc.

1. Clay red brick: It is made of clay and is a traditional red brick. This kind of red brick has the advantages of high strength, wear resistance and corrosion resistance, but it will consume a lot of clay and coal resources in the production process and have a certain impact on the environment.

2. Shale red brick: made of shale, it is a new type of red brick. This kind of red brick has high strength, good durability, short firing time and fast production speed. At the same time, shale resources are relatively abundant and have little impact on the environment.

3. Coal gangue red brick: It is made of coal gangue and also belongs to a new type of red brick. Coal gangue is a kind of waste. Using it to produce red bricks can reduce the accumulation of waste. At the same time, coal gangue contains a certain amount of heat, which can replace some coal and save energy.