What are the factors that affect the performance of low cement refractory castable

1.Factors affecting the properties of low cement refractory castable: condensation is directly related to time and hardening of cement and the strength of the general construction to ensure adequate time to complete the mixing, transportation, molding process, the setting time of cement should not be too short, I hope as soon as possible to produce cement hardening, hardness, so the cement setting time is should not be too long.
The quality of the volume stability and low cement refractory castable is a great relationship, if the volume change is not even bad soundness, will be prone to warping and cracking, it will reduce the quality, even accident. Fineness determines the acceptability of low cement castable, cement particle is fine, the greater the surface the area of the hydration reaction will be faster and more fully, early and later strength will be higher. The specific surface area of more than 300 square meters per kilogram is qualified.
In addition, low cement refractory castable and the characteristics of calcium oxide content of low cement castable is low, low melting phase so it can reduce the total generation, thus improves the refractoriness, high temperature strength and slag resistance of low cement castable heating does not exist a lot of damage to key hydration temperature the problem of decreasing strength, with the increase of heat treatment temperature, the intensity will increase. The low cement refractory castable water demand is also very low, the porosity is low, the volume density is high.
2.The preparation process of low cement refractory castable is very strict, so there are many factors affecting the performance, mainly include superfine powder, calcium aluminate cement and admixture. Refractory aggregate and admixtures. Refractory aggregate and water consumption is also important influencing factors.
The ultra-fine powder of low cement refractory castable in front, from different angles are described, the conclusion is the mainstay of decision of low cement refractory castables series, but also it is no exaggeration to say that no super powder, no series of low cement refractory castable.In the low cement refractory castable, ultrafine powder mainly dispersed promoters and dense structure agent. The former makes cement particles highly dispersed without flocculation, the latter structure and increase the strength of fully filled pores.Ultra fine powder types are SiO2, a-Al2O3, Cr2O3, ZrO2 and MgO of.Sio2 ultrafine powder specific surface area is about 20m2/g, which is about 1/100 after the cement particles, so it has good dispersibility and filling properties. With the increase of the amount of ultrafine SiO2 increases the strength of refractoriness decreased, the suitable dosage for the aged 3%.

Taurus Refractory ramming mass Factory mainly engaged in professional manufacturer of development, production and sales of the refractory mixture such as melting copper, aluminum and zinc furnace lining. And supply castable refractory for copper smelting, ramming mass for molten copper,fire clay,refractory mortar, refractory cement ,refractory mixture, refractory concrete and silica sand for copper smelting.
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