Used for blast furnace lining in castable refractory material. It is a kind of containing silicon carbide and carbon of high alumina castable. Trough the castable lining was developed in the late twentieth Century 70 a new unshaped refractory materials, with the iron quantity, long service life, low consumption of refractory material, convenient construction etc...

Trough castables is mainly composed of high alumina, silicon carbide, carbonmaterials and binder prepared.

High alumina raw materials: the use of electric melting or sintering corundum spinel, bauxite clinker in one or two.

Silicon carbide materials: can choose one grade or two grade black silicon carbide.

Carbonaceous materials: the use of asphalt, coke, graphite or electrode powdered..

Binder: the clay, good dispersion of oxides or ultrafine powder and pure calcium aluminate cement.

Technical features: iron trough castable trench lining in repair without dismantling old lining, in the clear old lining surface residue and residual iron can be carried out after repair of casting, the old and the new ditch lining has good binding capacity, compared with the ramming material, waste is reduced by more than 50%, after repeated feeding, the total amount of iron. Up to 30 ~ 1000000t

Recent Status of graphite industry

Graphite is most common in marble, schist or gneiss, due to its special structure, with many features high temperature resistance, thermal shock resistance, electrical conductivity, lubricity, chemical stability and plasticity,

is the modern industrial and military high, new, sharp technological developments are an important strategic resource. Experts had said, "The 20th century was the century of silicon, the 21st century will be the century of carbon."

From the distribution of resources situation exists, Asia, Europe, Africa, the Americas, Oceania has a graphite deposit, but the Asian production of graphite most. According to USGS statistics, the world's graphite resources proved reserves of approximately 84 million tons, of which China reserves of 64 million tons, accounting for 74% of the world's total reserves. 2010 global production of about 925,000 tons, of which China output of 600,000 tons, accounting for 64.9% of global output. Due to the lack of regulatory industry disorderly competition leads to serious waste of resources. However, this situation is expected with the implementation of access conditions change.

According to the U.S. Geological Survey, in 2011 the major downstream industry needs in the graphite refractory crucible 33% (China more than 40%), casting and steel manufacturing accounted for 26%, 7% of the brake lining, battery and lubricant 5%, 29% for other purposes.Access conditions put forward, "Twelve Five" period, based on domestic demand, and strictly control the incremental, focusing on optimizing inventory, actively adjusting structure, promoting mergers and acquisitions, increased industrial concentration.