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发明公开
CN110526747A 一种尿素硫酸铵镁肥的制备方法及尿素硫酸铵镁肥产品 审中-实审

一种尿素硫酸铵镁肥的制备方法及尿素硫酸铵镁肥产品
摘要：
本发明适用于化肥工业领域，公开了一种尿素硫酸铵镁肥的制备方法，包括以下步骤：对磷矿石依次进行脱钙、脱镁浸取处理，获得脱镁浸取液；将脱镁浸取液进行浓缩，冷却结晶，过滤得到硫酸铵镁晶体和结晶母液；将硫酸铵镁晶体与尿素合成得到尿素硫酸铵镁肥产品。本发明还公开了一种尿素硫酸铵镁肥产品，其成分包含：N≥16％、N酰9％～39％、N铵1％～15％、Ca水0.1％～0.3％、Mg水1％～5.5％、S2.5％～14％。本发明提供的一种尿素硫酸铵镁肥的制备方法及尿素硫酸铵镁肥产品，其含有适量的酰态氮、铵态氮、水溶镁、硫、钙，具有全水溶，肥效快的特点，可作追肥、基肥等，利于农作物生长和补充镁、硫、钙元素，且单位养分成本较低，产品售价易为市场所接受。
摘要（英）：

The invention is suitable for the field of chemical fertilizer industry and discloses a preparation method of urea ammonium magnesium sulfate fertilizer, which comprises the following steps of sequentially performing decalcification and demagnetization leaching treatment on phosphate rock to obtain demagnetization leaching solution; concentrating the demagnetization leaching solution, cooling andcrystallizing, and filtering to obtain ammonium magnesium sulfate crystals and crystallization mother liquor; synthesizing ammonium magnesium sulfate crystal and urea to obtain urea ammonium magnesiumsulfate fertilizer product. The invention also discloses a urea ammonium magnesium sulfate fertilizer product, which comprises: N>=16%, N acyl 9%-39%, N ammonium 1%-15%, Ca water 0.1%-0.3%, Mg water1%-5.5%, S 2.5%-14%. The invention provides a preparation method of urea ammonium magnesium sulfate fertilizer and a urea ammonium magnesium sulfate fertilizer product. It contains appropriate amountof acyl nitrogen, ammonium nitrogen, water soluble magnesium, sulfur and calcium, has the characteristics of full water solubility and fast fertilizer efficiency, can be used as top dressing, base fertilizer and the like, is beneficial to crop growth and supplement magnesium, sulfur and calcium elements, has low unit nutrient cost, and the product price is easily accepted by the market.

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