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发明公开
CN107963914A 一种高温转化法制取优级高品位钾镁肥的方法 审中-实审

一种高温转化法制取优级高品位钾镁肥的方法
摘要：
本发明属于钾镁肥制取工艺的改进，特别是一种高温转化法制取优级高品位钾镁肥的方法，第一步-球磨转化；第二步-浮选；第三步-再浆洗涤；第四步-高温转化；第五步-固液分离；第六步-干燥。本发明可提供制备优级高品位钾镁肥的方法，以钾混盐转化浮选得到的软钾镁矾粗产品为原料，通过加水再浆洗涤后分离，分离产品加水在高温(45～60℃)转化制取优级钾镁肥。本发明制备的优级钾镁肥，具有K+品位高，产品颗粒粗，易分离干燥等特点。
摘要（英）：

The invention belongs to improvement of a potassium-magnesium fertilizer preparation process, and especially relates to a method for preparing a potassium-magnesium fertilizer of super grade and highquality by a high temperature conversion process. The method comprises the following steps: a first step, conversion with ball milling; a second step, flotation; a third step, repulping and washing; aforth step, conversion at a high temperature; a fifth step, solid-liquid separation; a sixth step, drying. The method for preparing the potassium-magnesium fertilizer of super grade and high qualityemploys a picromerite crude product obtained by conversion and flotation of mixed potassium salt as a raw material, after water is added for repulping and washing, separation is carried out, water isadded into the separated product and conversion is carried out at a high temperature (45-60 DEG C) in order to obtain the potassium-magnesium fertilizer of super grade. The potassium-magnesium fertilizer of super grade has the characteristic of high K+ grade, crude product particles, easy separation and drying, and the like.

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