Refractories Are Cooling, Abrasives Are Warming — Two Rhythms for the Same Brown Fused Alumina Taiyue supplies both section sand and grain sand, but the two lines are released against different criteria. Section sand goes the refractory route, where bulk density and impurity structure decide whether a brick skeleton holds up at temperature. Grain sand goes the abrasive route, where particle size distribution and magnetic content determine whether a grinding tool cuts the same way on the next batch. Two air-cleaning granulation lines serve these two paths, and inspection checks different targets on each—one release report does not cover both.
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