| 摘要 |
PURPOSE: A colored clay block and its preparation method are provided, to produce the colored clay blocks which can have various color and is environmental-friendly, with low cost. CONSTITUTION: The colored clay block comprises a clay block(2); and a coating(1) comprising 0-10 wt% of kaolin, 0-25 wt% of feldspar, 4-15 wt% of silica, 5-20 wt% of pottery stone, 0-15 wt% of gairome clay, 0-5 wt% of zirconium, 0-3 wt% of a CMC adhesive and a coloring agent. The method comprises the steps of mixing a coating material composition comprising kaolin, feldspar, silica, pottery stone, gairome clay, zirconium and a CMC adhesive with a coloring agent to prepare a ceramic soil; coating the ceramic soil to the surface of a clay block; drying the coated block in a drying room; and calcining the dried one in a continuous calcination kiln.
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