发明名称 Method for making moisture resistant calcium-containing particles
摘要 A method of making free-flowing moisture resistant calcium-containing particles that inhibit the water absorption characteristics of calcium products, hygroscopic and deliquescent, for example, the method comprising the steps of spraying molten soluble nitrogen-containing material onto the hygroscopic calcium-containing granules and recovering the coated granules. The core of the particle is a calcium-containing material, more particularly a soluble calcium-containing material. Moisture resistant or hydrophobic coatings are applied to the core to inhibit water absorption by the calcium-containing material. The coated particles may then be more easily shipped, stored and handled as a dry, anhydrous product. A core comprised of calcium chloride coated with urea is useful as both a soil conditioner and a fertilizer. Additional plant nutrients are mixed with either the core or the coating materials to improve fertilizing is qualities. Additional coatings of hydrophobic materials such as a paraffinic hydrocarbon or a polymeric resin increase the water resistance of the particles. A final coating of a finely divided conditioning agents such as talc or calcium carbonate can be applied to achieve a more free-flowing particle.
申请公布号 US5997601(A) 申请公布日期 1999.12.07
申请号 US19990227631 申请日期 1999.01.08
申请人 TETRATECHNOLOGIES, INC. 发明人 KUST, ROGER N.
分类号 C05C5/04;C05C9/00;C05D3/00;C05G3/00;(IPC1-7):C05C9/00;C05C11/00;C05D9/00 主分类号 C05C5/04
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