| 摘要 |
<p>A method of producing mineral filters containing hydrated calcium monocarboaluminate. Al(0H)3, CaCO3 and Ca(OH)2 are reacted together in the presence of water, the operating temperature range being of 50.degree.C-100.degree.C. Although these materials are insoluble, a quick reaction occurs as well in a highly concentrated solid medium as in a diluted medium. According to A preferred embodiment, the amount of water is such to obtain a final dry matter content of 50%, and the substantially solid resultlng paste is directly brought to the fluidity required for use by means of a deffloculatlng agent, Applicatlon to paper coatlng.</p> |
