L-shaped wall used at furnace doghouse.

With its safe structure and long service life, the suspended back wall serves as one of the essential measures for prolonging the whole furnace life.

The distance between the foot line of L-shaped wall and top surface of sidewall is short, which allows thinner batch feeding so that the batch can be melted more easily. It can also reduce fire and batch running at the charge end and hence energy can be saved and environment improved. Its service life can reach above 10 years.