Nanoscale calcium hydroxyphosphate/calcium hydrophosphate and preparation method thereof

Abstract

The invention belongs to the technical field of chemical engineering, and particularly relates to a preparation method of nanoscale calcium hydroxyphosphate / calcium hydrophosphate. The method comprises the following steps of: adding an emulsion containing a calcium source and a phosphoric acid solution into dilute ammonia water / water containing an antistatic assistant for full reaction under an ultrasonic radiation condition, wherein the reaction solution contains nanoscale calcium hydroxyphosphate / calcium hydrophosphate; and carrying out solid-liquid separation on the reaction solution, and drying the solid to obtain a nanoscale calcium hydroxyphosphate / calcium hydrophosphate finished product. According to the method, the raw materials are easily available, the method is simple to implement, does not use an organic solvent, does not produce salt-containing wastewater, the effect is good, and the method is suitable for deep processing of phosphorus-calcium products in the animal nutrition and health industry, and the nanoscale calcium hydroxyphosphate / calcium hydrophosphate can be used as an animal bioactive calcium supplement, a high-efficiency feed additive, an animal micronutrient element carrier, an antibiotic substitute carrier or other animal pharmaceutical active carriers.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and in particular relates to nanoscale calcium hydroxyphosphate / calcium hydrogen phosphate and a preparation method thereof. Background technique [0002] Calcium and phosphorus are one of the main elements necessary for living organisms. Calcium phosphate products have been used for a long time and in large quantities as nutritional supplements for animal feeding. However, the low bioavailability of calcium phosphate salt has not been effectively resolved. The gradual consumption of high-grade phosphate rock has led to an increase in production costs. The homogeneity of the products of various phosphate rock processing manufacturers has also become more serious. In the context of environmental protection and ecological innovation and development Under the requirements of the trend of the times, more efficient and more biologically active phosphorus-calcium nutrients and further process...

AI Technical Summary

Problems solved by technology

[0010] It is used as nano calcium hydroxyphosphate or calcium hydrogen phosphate in the food industry, pharmaceutical industry, etc., because the industry has extremely high requirements on product quality, so the preparation methods used are generally expensive, and are not suitable for the animal nutrition industry with large scale and limited price space

[0011] In the existing preparation methods used as feed additives, the improved preparation methods in the food and pharmaceutical industry are mostly used, such as the use of inverse emulsions, the introduction of more organic solvents, in order to better disperse the solubility, the use of calcium salts and Phosphate, which not only needs to recycle and treat organic matter, but also needs to deal with saline wastewater containing organic residues, and is used in the feed industry. Even if the organic solvent with a small loss in a single time, it will produce amazing results under the scale-up and accumulation of production times. This loss is not only reflected in the direct consumption of solvents, but also in the increase of environmental protection costs such as wastewater treatment

[0012] Some low-cost technologies cannot prepare nano-scale calcium hydroxyphosphate or calcium hydrogen phosphate, which limits the improvement of product effects and various applications, making it impossible to effectively promote

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