Auditing Kiln Firing Sorting Yields and Downgraded Commercial Tiles
In Saudi ceramic and porcelain tile manufacturing, profitability hinges directly on post-kiln sorting tables. Raw materials—including clays, feldspar, silica, glazes, and pigments—pass through heavy hydraulic presses, drying lines, and high-temperature roller kilns. However, slight variations in kiln atmospheric pressure, glaze density, or roller speeds cause surface pinholes, edge chipping, or warpage that downgrade tiles from premium First Quality (Grade A) to discounted Commercial Second Quality or outright broken scrap.
A disciplined weekly grading review brings immediate financial transparency to the sorting line. In ALZERP, raw batch mixing and glaze consumption are logged against production work orders. In the plant manager’s weekly review routine, sorting department receipts are categorized into first quality, downgraded saleable, and rejected scrap area (in square metres). This allows managers to determine the exact first-quality yield percentage and evaluate whether kiln firing curves require recalibration.
This direct visibility enforces operational quality control. Plant managers identify glaze application faults or press die wear early, minimizing the proportion of batches sold at steep commercial markdowns.