Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for preparing high-purity calcium gluconate by taking oyster shells as raw materials

A technology of calcium gluconate and gluconic acid, applied in the preparation of carboxylate, organic chemistry and other directions, can solve the problems of reducing the Pb content and large loss of oyster shell bio-calcium products, and achieve white color, improved yield and shortened process time. Effect

Inactive Publication Date: 2013-01-23
广西还珠海洋生物科技有限公司
View PDF2 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this method, through secondary crystallization or even multiple crystallization, the loss is too large, and the loss is 10% per crystallization. Therefore, it is necessary to develop a method that can effectively reduce the Pb content of oyster shell bio-calcium products. The process is mature and simple. High-purity calcium gluconate The preparation method is a practical problem to be solved urgently

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A kind of method that raw material prepares high-purity calcium gluconate 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. Prepare 2.0mol / L glucono delta lactone solution with distilled water, and heat to 60°C to dissolve it completely;

[0025] c. Stir continuously while heating in a water bath at 60°C, slowly add 1.5 kg of the oyster shell coarse powder obtained above into 10L glucono δ lactone solution, and the reaction time is 3 hours;

[0026] d. Filtrate the suspension obtained above, add 6.5 g of precipitating agent magnesium sulfate to the filtrate, and let stand for 3 hours;

[0027] e. Filter the suspension obtained in the previous step, adjust the pH of the filtrate to 10, add 0.03 g of flocculant polyacrylamide to the filtrate, and keep the reaction temperature at 80-90°C for 1 hour;

[0028] f. Filter th...

Embodiment 2

[0031] A kind of method that raw material prepares high-purity calcium gluconate 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. Prepare 2.6 mol / L glucono delta lactone solution with distilled water, and heat to 60°C to dissolve it completely;

[0034] c. Stir continuously while heating in a water bath at 70°C, slowly add 2.0 kg of the oyster shell coarse powder obtained above into 10L glucono δ lactone solution, and the reaction time is 5 hours;

[0035] d. Filtrate the suspension obtained above, add 8.25 g of precipitating agent magnesium sulfate to the filtrate, and let stand for 2 hours;

[0036] e. Filter the suspension obtained in the previous step, adjust the pH of the filtrate to 9, add 0.05 g of flocculant polyacrylamide to the filtrate, and keep the reaction temperature at 80-90°C for 1 hour;

[0037] f. Fi...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method for preparing high-purity calcium gluconate by taking oyster shells as raw materials. The method comprises the following steps of: washing the oyster shells clean, drying, crushing by a ball mill, then transforming by gluconic acid, adding a precipitator, a flocculating agent and a decoloring agent, and crystallizing to get the high-purity calcium gluconate. The obtained calcium gluconate has the advantages of high content, white color and luster, low heavy metal residues and high product yield.

Description

technical field [0001] The invention relates to a method for preparing calcium gluconate, in particular to a method for preparing high-purity calcium gluconate 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 reclama...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C07C59/105C07C51/41
Inventor 归三民
Owner 广西还珠海洋生物科技有限公司