Production method of magnesium citrate anhydrous

Abstract

The invention provides a production method of magnesium citrate anhydrous, relating to the technical field of production processes of chemical raw materials. The production method comprises the following steps: injecting purified water accounting for a certain volume of a tank into a reaction kettle, and stirring; adding a calculated amount of clean citric acid, opening a steam valve, and raising the temperature to about 70 DEG C to fully dissolve the citric acid; slowly adding food-grade magnesium oxide calculated according to a chemical formula to the reaction kettle; reacting the materials for 3-4 hours after feeding ends, then generating plenty of white precipitates, and repeatedly stirring the materials; starting solid-liquid separation when the content of the precipitates is above 50%; firstly drying the product at a low temperature of 70-80 DEG C for about 5 hours after separation to obtain magnesium citrate containing crystal water; raising the drying temperature to 150 DEG C, and continuously drying magnesium citrate containing crystal water for about 60 hours to obtain magnesium citrate anhydrous. The production method is scientific and reasonable, is easy to control and is conducive to reducing the production cost. Prepared magnesium citrate anhydrous is very soluble in water and is beneficial for human bodies to absorb.

Description

Technical field: [0001] The invention relates to the technical field of production technology of chemical raw materials, in particular to a production method of anhydrous magnesium citrate. Background technique: [0002] Citric acid produced in China is mainly exported to the United States, Japan, Belgium, the Netherlands, India, Spain and other countries. In recent years, the export volume of Chinese citric acid to the Middle East and EU markets has increased rapidly. In 2000, China exported 225,400 tons of citric acid, 241,800 tons in 2001, and 260,300 tons in 2002. However, the export of citric acid in China is based on the advantage of low price, and the export price is about 20% lower than that of similar foreign products. Although the export volume of enterprises has increased, the economic benefits have not increased, and even declined. [0003] China's citric acid production enterprises should vigorously expand the domestic market and speed up the development of do...

AI Technical Summary

Problems solved by technology

[0006] At present, the process of producing magnesium citrate is immature, resulting in high energy consumption, large waste of resources and serious pollution

And the prepared magnesium citrate contains a large amount of crystal water, causing the product to be slightly soluble in water, which is not conducive to human body absorption when used in the pharmaceutical and health care products industry

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