A method for producing Magnesium Citrat, which uses magnesium carbonate or magnesium oxide or magnesium hydroxide as a raw material to react with edible citric acid to obtain Magnesium Citrat, which is cooled, crystallized, washed with hot deionized water, and dried to obtain lemon Magnesium acid, the technical characteristics of the process for producing magnesium citrate in the present invention are: adding dilute acetic acid solution after magnesium carbonate or magnesium oxide or magnesium hydroxide is the reaction of raw material and edible citric acid to control the content of lead, and its specific implementation is as follows: : a, citric acid is added to dissolve in water and filtered, and when the temperature reaches 70°C after heating, magnesium carbonate or magnesium oxide or magnesium hydroxide is gradually added, and its weight ratio is 0.55/0.29/0.41: 1, and the pH value of the reaction solution is at Between 5-8; b add dilute acetic acid solution to control the content of lead; c after cooling, crystallization, washing and drying, carry out sub-sieving according to the particle size requirements to obtain the finished magnesium citrate crystal or powder, if required Granules can be soaked into paste with 3% maltodextrin in warm water, mixed with powdery materials, extruded and granulated, and then dried to make granules.
The production method of anhydrous Magnesium Citrat, its production process is scientific and reasonable, easy to control, reduces production cost, and the prepared anhydrous magnesium citrate is very soluble in water, and can be made into easily soluble magnesium citrate tablets, Granules, capsules, oral liquids and injections can also be directly added to food and beverages to facilitate absorption by the human body. Its production process is as follows: (1), inject a certain volume of purified water into the reactor, and start stirring; (2), add a calculated amount of clean citric acid, open the steam valve, and heat up to about 70°C to make the lemon The acid is fully dissolved; (3), slowly add food-grade magnesium oxide calculated according to the chemical formula into the reactor; (4), the reaction releases a large amount of heat, and the temperature is controlled not to exceed 90 °C; (5), after the feeding is completed, use After reacting for 3-4 hours, a large amount of white precipitate is produced, which is repeatedly stirred; (6), the precipitate content reaches more than 50%, and solid-liquid separation begins; (7), after the separation, dry at a low temperature of 70-80°C for 5 hours or so, to obtain Magnesium Citrat containing crystal water; (8), raising the drying temperature to 150° C., and continuing to dry for about 60 hours, to obtain anhydrous magnesium citrate; (9), sub-sieving after cooling; (10), packaging to obtain finished product.
A kind of method of producing low-lead particle Magnesium Citrat, it: utilize magnesium sulfate and sodium carbonate to make magnesium carbonate, neutralize reaction with edible grade citric acid, produce Magnesium Citrat, its reaction principle is:
Then, add dilute acetic acid solution to control the content of lead, which utilizes the reaction principle:
Concrete steps are: use magnesium sulfate and sodium carbonate as raw materials to prepare magnesium carbonate earlier, then react magnesium carbonate with citric acid to prepare magnesium citrate, and its specific implementation is as follows: a. Dissolve in water, filter to remove impurity, make magnesium sulfate solution (magnesium sulfate and water weight ratio are 1: 0.8); Sodium=1: 0.525) makes magnesium carbonate through dehydration, washing; c with above-mentioned magnesium carbonate and edible citric acid and water according to following weight ratio (magnesium carbonate: edible citric acid: water=1: 1.67: 2,) earlier lemon Add the acid into water, dissolve and filter, and when the heating temperature reaches 70°C, start adding magnesium carbonate gradually, and the pH value of the reaction solution is between 5-8; d Add dilute acetic acid solution to control the content of lead; f After cooling, crystallization, use After washing and drying with hot ion-free water, sieve according to the particle size requirements. When sieving, there will be 30-40% tiny crystals or powders. In order to reduce powder pollution during use and meet the requirements of market particles, Soak 3% maltodextrin in warm water to form a paste, mix with powdery materials, granulate and re-dry to make granules.
