Precast refractory

Nov 10,2014
Precast refractory aggregate by the fire, powder, binder, additive production, water or other liquids carefully formulated, with the casting method into a fixed shape of the monolithic refractories. Refractory cement binder divided by binding with phosphate, sodium silicate combined with other non-cement. Press material can be divided into high-alumina, corundum, clay, mullite, etc.. The product can be prefabricated into a variety of arbitrary shape, good thermal shock resistance, high strength, good resistance to spalling; no seams, air tightness, less heat loss, energy saving; can quickly repair the furnace, the furnace operating rate increase; to achieve a direct lifting of mechanization furnace building, construction and high efficiency.
Perfect after-sale technical services company, users can solve technical problems in the process of ramming; furnace according to user requirements and conditions for users to consider lining the body design and a variety of construction programs. Zhengzhou Dengda. into a source of complete products, timely delivery, usually within two weeks of delivery may be expedited production, large no mold fee. Precast refractory bricks can not be replaced at an advantage, should be wide variety of industrial furnace. The biggest advantage is you can pre-baking, direct lifting, good quality control
Furnace lid preform is to extend the service life of electric furnace roof developed, there are two kinds of high quality aluminum and alumina. Compared with ordinary brick furnace roof, with easy construction, good integrity, and strong resistance to arc radiation, resistance to thermal shock performance advantages. Made with prefabricated castable by 400-600℃baking before use, the better. Electrode rings with chromium corundum castable, strong radiation resistance, long life; high aluminum furnace lid can be used 80-110 times, corundum furnace lid preform in Xinjiang Bayi Iron and Steel on the life of DC EAF 70t is 160-220 times.
Furnace bottom and furnace slope with dry ramming material using synthetic MgO-CaO-Fe2O3 sand, dry ramming mix composition and size distribution can be optimized according to the specific conditions of use identified. The sintered material has good resistance to slag corrosion and impact resistance.