静电喷涂机

High-purity light-weight high-activity magnesium oxide and preparation method thereof

The invention relates to the technical field of pharmaceutic adjuvants, in particular to high-purity light-weight high-activity magnesium oxide and a preparation method thereof.The preparation method comprises the following steps that a magnesium sulfate solution and a precipitator are prepared and stirred and mixed based on a high-speed spiral mode, and hydrated basic magnesium carbonate is prepared; the hydrated basic magnesium carbonate is calcined according to a stepped progressive temperature to obtain magnesium oxide. According to the method, semi-finished products of magnesium liquid and a precipitator are further refined and purified, a precursor hydrated basic magnesium carbonate with a specific crystal form is prepared by adopting the method disclosed by the invention, and the high-purity light-weight high-activity magnesium oxide is prepared by adopting a step progressive calcining mode and controlling a calcining time node. Compared with magnesium oxide products in the existing ...

Medicinal spherical magnesium hydroxide and preparation method thereof

The invention relates to the technical field of medicinal auxiliary materials, in particular to medicinal spherical magnesium hydroxide and a preparation method thereof, recovered mother liquor ammonium sulfate and light calcined magnesia are subjected to an ammonia distillation double decomposition reaction, and diluted magnesium sulfate slurry is prepared. Adding light calcined magnesia into the diluted magnesium sulfate slurry, pulping, adding sulfuric acid for acidolysis to prepare a magnesium sulfate solution, and reacting the magnesium sulfate solution with ammonia water to prepare spherical magnesium hydroxide crystals. According to the invention, the recovered mother liquor ammonium sulfate and light calcined magnesia are subjected to an ammonia distillation double decomposition reaction, and the medicinal spherical magnesium hydroxide conforming to the medicinal auxiliary material is prepared based on an improved device. The preparation method is low in cost, the recovered mother ...