Refractories For The Tapping Channel And Slagging Channel Of Blast Furnace
The series of products are applicable to the tapping channel, slagging channel and ladle slagging line of the blast furnace. They are featured by good construction, performance, stable thermal shock resistance, high strength, scouring and erosion resistance, etc.
Baking-free ramming materials and channel materials for medium and small blast furnace
Featured by good construction performance, stable thermal shock resistance, high strength, scoring resistance and bake free properties, the tapping channel's bake-free ramming materials is mainly used in the tapping channels of medium and small blast furnaces whose volume is smaller than 1000m3.
Refractory paintings are mainly aluminum-silica series product and the lightweight, medium heavy weight or heavy weight materials might be chosen as per the users' requirements. The material has good adhesive quality, low elasticity and high strength. It is mainly used in the high-temperature ducts and flue system of the blast furnace and air stove.
Magnesia-carbon bricks are made by using high purity high dense magnesite or big crystalline magnesite, high purity graphite as starting materials with addition of a proper amount of antioxidant and phenolic resin as binders and shaping at high pressure. Characterized by good slag resistance, high strength, good thermal shock resistance and arc impact resistance, the product is suitable for slag line of refining ladle or large ladle. Different brands of magnesia-carbon bricks can be offered according to different smelting condition and steel grades.
Chemical content %
Magnesia-Calcium bricks are made of two-step burned magnesia-calcium sands and high pure magnesia. After high pressure shaping, high temperature burning and paraffine vacuum dipping. It has good high temperature creep-resistance and slag resistance. It is the best materials for AOD, VOD.
Direct-bonded Magnesia-Chromite bricks are composed of high-purity or secondary high-purity or fused magnesia and chrome concentrate. Due to little impurity and sintering at high temperature and ultra high temperature, glass phase concentrates in the triangle zone of the crystalline phases, which are directly bonded to each other. The products are characterized by low-porosity, high CCS, strong resistance to abrasion, corrosion, thermal shock and spalling.
Aluminum-magnesia castable is mainly prepared by corundum, magnesia and spinel and has properties of high strength, erosion and thermal shock resistance features. The products are mainly used as the lining for the high-temperature furnace such as ladle and foundry ladle.
Different argon inserts for preventing the molten steel from re-oxidizing.
The canopy nozzle can prevent the steel from flowing upstream when start casting.
Long service life and non-preheating ladle shroud: compound material for different steel grades and make the service life over 450 minutes.
Given-diameter zirconic water outlet is made of zirconia and imported natural baddeleyite, formed by high tension and baked in high temperature when stabilized by special technology. Different sizes and types of outlets are designed and made according to user's different steel-making conditions and requirements.
It has some advantage of high refractoriness, well thermal-shock resistant, anti-eroding, anti-erosive, changeless diameter and lasting long.
During continuous casting it is mainly used in continuous casting tundish small square , big square adobes, rectangle adobes and small board adobes.
Characterized by stable structure, broad range of air permeating, easy adjustment of airflow, higher target-hit ratio, scouring resistance, erosion resistance and long service life. This porous plug is made of tabular alumina and high purity spinel as starting material. The service life of the products can synchronize with ladle lining when applied in medium-and small-sized continuous casting ladle and the product's service life can be over 30 heats when used in refining ladle. Monolithic or separated forms can be adopted according to in-site conditions.
Tundish striking plate and slag trap are cast and moulded by alumina-silicate or aluminum-magnesium refractory concrete. The materials is featured by high temperature strength, shock resistance and scouring resistance properties. Different material might be designed according to the tundish conditions to satisfy the lining packaging.
Tundish dry-process vibratory material is mainly prepared by magnesium or other alkali materials and no water is added in construction. Featured by easy construction, short baking time, long service life and easy disintegration, it is mainly used in the work coating of tundish.