High-Temperature Refractory Castable Cement

A refractory castable is a heat-resistant building material predominantly used to manufacture industrial metallurgical furnaces or kilns for companies specializing in the production of building materials, chemicals, and the oil industry. Adding silica fume to refractory-grade cement is extremely beneficial due to its excellent thermal resistance, enhanced strengths, superfine particle size, and reduced water storage capacity.

Undensified silica fume has the same chemical characteristics as densified fume. However, the compaction is far less and makes the actual particles lighter and more readily available in the mix to chemically bond.  In lower dosage rates, silica fume can improve workability, thus reducing the overall water requirements while maintaining the same flow characteristics. Silica fume also promotes low-temperature sintering and can increase mullite formation; resulting in lower permeability to gas, slag, and metal penetration. Castables made with undensified silica fume tend to be stronger than non-silica fume castables, especially at high temperatures and higher density. By using undensified silica fume, the cement will have porosity and be more volume stable.

Zunyi lianfeng   undensified refractory silica fume has a stable pH and a low impurity level and is perfectly adapted to the unique requirements of refractory castables. Its use improves the flow, mechanical properties (especially hot strength), and durability (via permeability reduction). In addition to offering premium silica fume for refractory use,zunyi lianfeng  also serves customers in the industrial concrete as well as the oil and gas industry. Contact our experienced team anytime to learn more about our silica fume for oil and gas applications or to receive a quote. 

If you are looking for a stable and reliable supplier of silica fume, please contact us.

Contact: Li Ji

Email: stemela3855@163.com