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Method for preparing high-purity calcium lactate by taking oyster shell as raw material

A technology of oyster shell and calcium lactate, which is applied in the preparation of carboxylate and the separation/purification of carboxylic acid compounds, etc., can solve the problems of high cost and large loss, and achieve the effects of increased yield, white color and shortened process time

Inactive Publication Date: 2013-09-18
广西还珠海洋生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the prior art, the manufacture of calcium lactate that meets the requirements of the Pharmacopoeia is mostly through secondary crystallization or even multiple crystallization, but the loss is too large, with a loss of 10% for each crystallization; by reacting edible lactic acid and medicinal calcium lactate, qualified calcium lactate can also be produced. Medicinal calcium lactate, but the cost is too high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A kind of method that raw material prepares high-purity calcium lactate with oyster shell, comprises the steps:

[0023] a. Scrub the oyster shell, dry it, and pulverize it with a ball mill until the particle size is 80 mesh to obtain oyster shell coarse powder;

[0024] b. Put 1kg of the oyster shell coarse powder obtained above into a stainless steel bucket, add an appropriate amount of water, grind it into a paste, add a large amount of water to stir, and immediately pour out the suspension. Repeat this many times, and it will not be suspended Discard the impurities. After the suspension that has been poured out several times is left to stand and settle, pour out the clear water above, and use the drained sediment for the following steps;

[0025] c. Stir continuously while heating in a water bath at 50°C, slowly add 2.5 kg of lactic acid solution with a concentration of 75% to the oyster shell powder obtained above, and the total reaction time is 3 hours;

[0026] ...

Embodiment 2

[0031] A kind of method that raw material prepares high-purity calcium lactate with oyster shell, comprises the steps:

[0032] a. Scrub the oyster shells, dry them, and pulverize them with a ball mill until the particle size is 100 mesh to obtain coarse oyster shell powder;

[0033] b. Put 1kg of the oyster shell coarse powder obtained above into a stainless steel bucket, add an appropriate amount of water, grind it into a paste, add a large amount of water to stir, and immediately pour out the suspension. Repeat this many times, and it will not be suspended Discard the impurities. After the suspension that has been poured out several times is left to stand and settle, pour out the clear water above, and use the drained sediment for the following steps;

[0034] c. Stir continuously while heating in a water bath at 60°C, slowly add 2.0 kg of lactic acid solution with a concentration of 75% to the oyster shell powder obtained above, and the total reaction time is 5 hours;

[...

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Abstract

The invention discloses a method for preparing high-purity calcium lactate by taking oyster shell as raw material. The method comprises the following steps: treating oyster shells through a water-refining method, converting the oyster shell with lactic acid, adding precipitator, flocculant and a decolorizing agent, and crystallizing to obtain high-purity calcium lactate. The obtained calcium lactate has high content, and is white in color, low in heavy metal residue and high in product yield.

Description

technical field [0001] The invention relates to a method for preparing calcium lactate, in particular to a method for preparing high-purity calcium lactate from oyster shells. Background technique [0002] Jinjiang oysters, also known as big oysters, are one of the four most valuable seafood in Qinzhou, Guangxi. The meat can be eaten fresh, or processed into dried oysters and oyster sauce. Oyster meat is a high-protein, low-fat, delicious aquatic product with high nutritional and health functions. The protein content of oyster meat exceeds 40%, which is rich in nutrition and delicious. It is known as "milk in the sea". Can be used as medicine. Oyster meat is rich in taurine, which can promote human brain development. [0003] In recent years, oysters have become an important seafood economy in my country. The output of shellfish continues to increase, and the oyster shells accounting for more than 80% of its total weight are mostly discarded in garbage dumps or reclamation...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C59/08C07C51/41C07C51/50
Inventor 归三民
Owner 广西还珠海洋生物科技有限公司