The LYTK series for blast furnace trough consists of three kinds of products: ramming mix, castable and self-flow castable. Ramming mix is generally used in iron troughs of medium-small and small blast furnaces, with the general flux of iron of 30-50 thousand tons. Castable and self-flow castable are mainly used in the main runner, branch runner and safety lining of iron troughs of medium and large blast furnaces. The workability of self-flow castable is better. The products of this series are characterized by high strength, erosion and corrosion resistance, rapid drying and large flux of iron. We can also produce precast blocks according to the customer’s requests. We are able to assume the technical reform and construction of the whole iron trough system of blast furnace.