Substrate composition for ceramics with high bending strength including synthetic bone ash and agalmatolite and method for manufacturing the same

The present invention relates to a clay composition for ceramics with high bending strength including synthetic bone ash and agalmatolite, which comprises synthetic bone ash (artificial bone material), and white porcelain clay. With respect to the total weight of the composition, the synthetic bone ash is 0.5-2 wt%, and the white porcelain clay is 98-99.5 wt%. 본 발명은, 합성 본 애쉬(인공 뼈 재); 및 백자소지를 포함하고, 조성물 전체 중량을 기준으로 상기 합성 본 애쉬는 0.5-2중량%, 상기 백자소지는 98-99.5중량%인 합성 본 애쉬와 곱돌을 포함한 꺾임강도가 높은 고백자용 소지 조성물을 포함한다.