How to improve the softness of products at high temperatures
The fly ash drift beads meet the construction performance of the castables. As the matrix material of the refractory castables, the fly ash drift beads and the light porous aggregates form a relatively uniform gas phase continuous structure, thereby reducing the thermal conductivity of the material, and adopting a high quality set. The material and binder are supplemented with beads, which can be used to prepare high-quality heat-insulating refractory castables.
The light-weight cooking performance of a factory produced with fly ash beads is as follows: The production of lightweight castables is performed using float beads. Bulk density (g/cm flexural strength (MPa) compressive strength (MPa) thermal conductivity Note: The test temperature marked with “*†is 1100°C. 4 Factors influencing the performance of the bead product 4.1 Factors affecting the mechanical strength of the product There are many factors affecting the mechanical strength of the product, but it mainly depends on the amount of beads added and the amount of binder added. And the type of the same brand of products generally speaking, with the increase in the amount of beads added and the compressive strength increased.The binding agent generally also increases the intensity of the product with its increase in the amount of added.
Ceramic core factors that affect the reburning line of the product The size of the reburn line directly affects the service performance of the product. The main factors affecting the product are the ignition loss of the raw material and the amount of liquid phase produced under high temperature conditions. The amount of phasor is larger, and the line shrinkage of the product is larger. Therefore, when selecting raw materials, it is necessary to select the small amount of burning loss and the content of impurities as low as possible. In addition, in order to reduce the reburning line change of the product, some intumescent materials such as kyanite, quartz and the like may be introduced into the formulation in an appropriate amount. The introduction of kyanite and the like can also improve the softness of the product at a certain degree and within a certain range.
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