Production and application of formed furnace lining

Formed furnace lining refers to the furnace lining that is mixed with various types of amorphous refractory materials and adopts the method of prefabrication outside the furnace. It is suitable for coreless induction furnaces to melt various ferrous metals and non-ferrous alloys. The refractory linings of coreless induction furnaces are classified according to the manufacturing method: in-furnace pounded or vibrated integral type, in-furnace masonry type, and outside-furnace prefabricated type.

At present, the furnace linings of domestic small and medium-sized electric furnaces are still mainly made by pounding in the furnace or vibrating the integral type, while the furnace linings of large electric furnaces are mainly made by masonry in the furnace. Foreign refractory material manufacturers still mainly sell ramming materials and vibrating materials of unshaped refractory materials in my country. The unique method of forming the furnace lining outside the furnace has the following advantages.

①Easy to install, saving time and effort (only about 20% of the time required to make the lining in the furnace).

② No oven is required, saving energy and electricity (saving fuel costs and electricity by more than 15%).

③ Melting is fast and efficiency is improved (the active power is increased and the melting time is shortened by about 10%).

④ The molten steel is pure, reducing inclusions (preventing refractory materials from entering the melt to cause inclusions and reducing pores).

⑤Easy to maintain and quick to replace (just simple maintenance and repair; just like replacing mechanical parts).

⑥The furnace age is longer and the water output is large (more than 100 heats of steel smelting; about 300 heats of copper smelting).

⑦ High safety, avoid furnace penetration (using double-layer furnace lining composite structure to effectively prevent liquid seepage).

⑧The life span is stable and easy to schedule (the consistency of the life span is good, which facilitates production planning and arrangement).