Inorganic precoated sand
The inorganic precoated sand according to the present invention has a refractory aggregate and an inorganic binder layer formed on the surface of the refractory aggregate, the inorganic binder contains at least one selected from the group consisting of sodium silicate and sodium metasilicate, the in...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The inorganic precoated sand according to the present invention has a refractory aggregate and an inorganic binder layer formed on the surface of the refractory aggregate, the inorganic binder contains at least one selected from the group consisting of sodium silicate and sodium metasilicate, the inorganic binder layer contains a calcium compound, and the Ca content in the inorganic binder layer is 3% by mass or more and 45% by mass or less.
本发明的无机覆膜砂具有耐火性骨料和形成于耐火性骨料的表面的无机粘结剂层，无机粘结剂含有选自硅酸钠及偏硅酸钠中的至少1种，无机粘结剂层中含有钙化合物，无机粘结剂层中的Ca含量为3质量％以上且45质量％以下。 |
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