Method for preparing feed grade calcium formate

A technology of calcium formate and feed grade, which is applied in the field of preparation of feed grade calcium formate, can solve the problems of slow heating and cooling speed of the reactor, unsightly appearance of calcium formate products, long reaction time, etc., and achieve good appearance, shortened reaction time, The effect of stable product quality

Inactive Publication Date: 2018-02-13
GUANGHAN LONGDA FEED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can obtain the calcium formate product that satisfies feed use, but it has the disadvantages of complex process, high energy consumption, and low yield; low rate

Method used

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  • Method for preparing feed grade calcium formate
  • Method for preparing feed grade calcium formate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Produce feed grade calcium formate product A according to the following method:

[0027] (1) Inject 1m into the reactor 3 water, start stirring (stirring speed 80r / min).

[0028] (2) Put light calcium carbonate (CaCO3) into the reactor 3 =99.2%) 200kg, after stirring evenly, slowly adding mass concentration in the reactor is 220kg of formic acid solution of 95%; Control the addition rate of formic acid solution, the reaction temperature is maintained between 60~80 ℃.

[0029] (3) The calcium formate generated by the reaction becomes crystals and precipitates to the lower part of the reaction kettle, and continues to stir for 50 minutes, maintaining a stirring rate of 80 r / min, so that the reaction is fully carried out, and the reaction is completed to obtain a reaction product.

[0030] (4) The reaction product is sent into the centrifuge, and the centrifuge is turned on to separate the calcium formate solid and the mother liquor at a centrifugal rate of 800r / min to o...

Embodiment 2

[0034] Produce feed grade calcium formate product B according to the following method:

[0035] (1) Inject 1m into the reactor 3 The mixture of mother liquor A and water, start stirring (stirring speed 40r / min).

[0036] (2) Put light calcium carbonate (CaCO3) into the reactor 3 =98.4%) 190kg, after stirring evenly, slowly add mass concentration in reactor and be the formic acid solution 228kg of 88%; Control the addition rate of formic acid solution, the reaction temperature is maintained between 65~75 ℃.

[0037] (3) The calcium formate generated by the reaction becomes crystals and precipitates to the lower part of the reaction kettle, and continues to stir for 60 minutes, maintaining a stirring rate of 40 r / min, so that the reaction is fully carried out, and the reaction is completed to obtain a reaction product.

[0038] (4) The reaction product is sent into the centrifuge, and the centrifuge is turned on to separate the calcium formate solid and the mother liquor at a ...

Embodiment 3

[0042] Produce feed grade calcium formate product C according to the following method:

[0043] (1) Inject 1m into the reactor 3 The mixture of mother liquor B and water, start stirring (stirring speed 90r / min).

[0044] (2) Putting nano calcium carbonate (CaCO3) into the reactor 3 =98.9%) 206kg, after stirring evenly, slowly add mass concentration in reactor and be 213kg of formic acid solution of 98%; Control the addition rate of formic acid solution, the reaction temperature is maintained between 65~75 ℃.

[0045] (3) The calcium formate generated by the reaction becomes a crystal and precipitates to the lower part of the reactor, and continues to stir for 45 minutes, maintaining a stirring rate of 90 r / min, so that the reaction is fully carried out, and the reaction is completed to obtain a reaction product.

[0046] (4) The reaction product is sent into the centrifuge, and the centrifuge is turned on to separate the calcium formate solid and the mother liquor at a centr...

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Abstract

The present invention relates to a production method of calcium formate, specifically discloses a preparation method of feed grade calcium formate, comprising the following steps: a. Putting light calcium carbonate or nanometer calcium carbonate into water or mother liquor, adding mass concentration ≥ 88 % formic acid solution; b, solid-liquid separation of the reaction product; c, dry calcium formate solid. The advantages of the present invention are: 1) the temperature of the reactor can be raised rapidly, and the temperature can be effectively avoided from being too high, no external heat source and forced heat exchange are required to reduce the temperature, energy consumption is reduced, the production process is simplified, and the product quality is stable; 2) the product is naturally separated, The reaction time is shortened, and the impurity content of the product is reduced; 3) It is beneficial to the growth of calcium formate crystals, further improving the product purity, and the product has a large crystal structure, uniform particle size, and good appearance.

Description

technical field [0001] The invention relates to a production method of calcium formate, in particular to a production method of calcium formate suitable as a feed additive. Background technique [0002] Calcium formate, also known as calcium formate, is a calcium salt containing formic acid, with the molecular formula Ca(HCOO) 2 . Calcium formate is a chemical product with a wide range of uses. It is widely used in food, feed, chemical, building materials, leather, petroleum and other industrial production. In addition, calcium formate is a water-soluble mineral salt with great nutritional value. It can Added to food to supplement the calcium ions needed by the human body. [0003] The production of calcium formate by chemical by-products or the product obtained by chemical by-product calcium formate has many impurities, low whiteness, and high heavy metal content, which is not suitable for use in the field of feed additives. [0004] The production method of feed grade c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C53/06C07C51/41C07C51/42C07C51/43
CPCC07C53/06C07C51/412C07C51/42C07C51/43
Inventor 邵勇杰李奉仙吴兵
Owner GUANGHAN LONGDA FEED
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