| 摘要 |
PROBLEM TO BE SOLVED: To obtain an artificial sand for forming a mold with which granulating agent itself for binding dust fine particles is provided with fused adhesive force. SOLUTION: The plurality of dust fine particles 1 are granulated with the granulating agent 2 and also, the granulating agent 2 is provided with water solubility and the fused adhesive force. Then, heat is applied to the granulating agent 2 and the granulating agent is fused and generated to the adhesive force and the dust fine particles 1 are bound to obtain a granulated body 3. The artificial sand for forming the mold is formed from this granulated body 3. COPYRIGHT: (C)2004,JPO
|
