Low Cement Bond, Chemical Bond, No-burn Precast

Low cement bonded, chemical bonded, unfired prefabricated parts are also called refractory prefabricated parts. It is an amorphous refractory material that is carefully prepared from refractory aggregates, powders, binders, additives, water or other liquids and cast into a fixed shape. According to the binder, it can be divided into refractory cement bonded, phosphate bonded, water glass bonded, cement-free bonded, etc. According to the material, it can be divided into high alumina, corundum, clay, mullite, etc.

Low cement bonding, chemical bonding, and fire-free prefabricated parts can be prefabricated into various shapes at will, with good thermal shock stability, high strength, and good anti-stripping performance; no joints, good air tightness, less heat dissipation loss, and energy saving; they can quickly repair kilns and improve furnace operation rates; they can realize direct hoisting and mechanized furnace construction and construction. It can solve technical problems in the furnace construction process for users; and can consider lining design and various construction plans for users according to user requirements and furnace conditions. The production method is to select refractory castables or plastics according to customer requirements, and after sufficient stirring, pour them into various prefabricated molds, and form them by vibration and ramming. After forming, put them in a constant temperature and humidity room for curing, and the curing time generally takes 3 days. After the curing is completed, knock them with a small hammer, and judge the degree of curing of the product by the sound of knocking to determine whether they can be demoulded. If the sound is dull and the surface is soft, it is generally necessary to air dry naturally for one day, and demould after it is fully cured.