Long Nozzle (Ladle Shroud)

What is Aluminum Carbon Long Nozzle?

Based on function categories, Changxing Refractory aluminium carbon long nozzles(also called Ladle Shroud, Long Nozzle) can be classified into preheating refractory nozzle, non-preheating refractory nozzle, argon blowing nozzle and not argon blowing nozzle; and according to material quality, ladle shroud are mainly classified into aluminum carbon, aluminum-zirconia carbon and alumina-magnesia carbon. This kind of refractory nozzle is provided with good liquid steel washing resistance performance and liquid steel erosion performance in the course of use, which can effectively prevent oxidation of air to liquid steel and its spatter.

Aluminum Carbon Long Nozzle(Ladle Shroud) Application:

Changxing Refractory ladle shroud enjoys performances of purifying liquid steel, prevent liquid steel oxidation, with good liquid steel washing resistance and erosion resistance.

In order to inhibit the oxidation of graphite during the use of aluminum-carbon long nozzle(Ladle Shroud), its surface will be coated with an antioxidant coating containing 20% to 30% Al2O3, but the special steel smelting process such as cutting wire steel must strictly control the content of Al2O3 entrained in the steel, so it is necessary to prepare an antioxidant coating with low aluminum oxide content.

Aluminum Carbon Long Nozzle (Ladle Shroud)Manufacture：

Continuous casting of aluminium (zirconium) carbonaceous long nozzle(Ladle Shroud), submersed nozzle and monolithic stopper refractory products, adopt several in corundum, crystalline flake graphite, calcined alumina, fused zirconia-mullite, electric smelting stabilizing zirconia, carborundum, the metallic silicon or all make raw material, phenolic resins is made adhesive.Earlier make phenolic resin modified by adding unburned dose; Again with phenol-formaldehyde resin modified and raw material corundum, crystalline flake graphite, calcined alumina, fused zirconia-mullite, electric smelting stabilizing zirconia, carborundum, metallic silicon power granulation or batch mixing; Put into grinding tool and carry out cold isostatic compaction; The lathe fine finishining of dry back is to guarantee accurate dimension: apply inoxidzable coating at last and get product.