Fire-resistant raw materials are not only polycrystalline in nature
Fire-resistant raw materials are not only polycrystals, but in general, there are also many crystals and glass phases and pores with different properties. There are different shrinkage coefficients between different crystals and between the crystal and glass phases during the cooling process, which causes the material to have a large non-uniform shrinkage in the cooling process. The thermal stress caused by this uneven shrinkage accumulates to a certain extent. Internal material will produce intergranular fracture, and even transgranular fracture. Therefore, this type of research can be conducted by applying thermal stress to the refractory ore ore, exploring the possibility of crack formation under different methods, under different conditions, and looking for ways and means to effectively improve the efficiency of the grinding and grinding system. This is for crushing and grinding strength. High-hardness materials are particularly important. The fact that the length or volume of the crystal changes with changes in temperature indicates that the equilibrium distance between adjacent atoms in the crystal also changes with temperature. If you want to find the fragmentation mechanism of the ore based on the fractal dimension of the fragment, it is too late to observe the particles that have been abraded by the ball mill.
The author believes that in the preparation, storage, and transportation of ultrafine powders, studying the porous fractal structure of ultrafine particles can predict the flowability of ultrafine powders (including ultrafine powders prepared by spray drying methods). The filling condition of the powder during the pressing process can be predicted so as to adjust the preparation and collection process parameters of the ultrafine powder and obtain the powder particles with relatively uniform particle size and compactness. On the other hand, based on the fluidity of powders, it is also necessary to design different types of bins and conveying pipelines from fluid mechanics to accommodate the storage and transportation of powders with different fluidities.
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