CN105218357A - A kind of preparation method of zinc citrate - Google Patents
A kind of preparation method of zinc citrate Download PDFInfo
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- CN105218357A CN105218357A CN201410286945.4A CN201410286945A CN105218357A CN 105218357 A CN105218357 A CN 105218357A CN 201410286945 A CN201410286945 A CN 201410286945A CN 105218357 A CN105218357 A CN 105218357A
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- zinc citrate
- zinc
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Abstract
The present invention relates to a kind of preparation method of zinc citrate, step is as follows: (1) salt-forming reaction step: by citric acid, zinc oxide, initiator, hydromassage that drops in reactor than 1:15:0.5 ~ 0.6:0.02 ~ 0.05, is heated to 70 ~ 80 DEG C, reacts 5 ~ 7 hours while stirring, carbonic acid gas is overflowed, obtains zinc citrate; (2) baking step: by step (1) in the zinc citrate centrifugation that obtains obtain granular zinc citrate, granular zinc citrate is placed in dry sieve and dries in loft drier, sieve after oven dry and obtain finished lemon/lime acid zinc.Present method uses citric acid to replace Trisodium Citrate in feeding intake, and use zinc oxide to replace zinc sulfate, the product obtained only has zinc citrate, product is single, purity is high, in particulate state, be easy to dry after separation, the danger of releasing spontaneous combustion, the product obtained, without the need to pulverizing, avoids a large amount of dust.
Description
Technical field
The invention belongs to field of organic compound preparation, relate to zinc citrate, especially a kind of preparation method of zinc citrate.
Background technology
In animal-feed humatite additive, zinc citrate, as a kind of organic zinc mineral additive, more and more comes into one's own, is with a wide range of applications.The usual production method of zinc citrate utilizes Trisodium Citrate and zinc sulfate to react, and the product obtained is thick thing, further difficult treatment, be difficult to sell, this type of preparation method's Problems existing: 1, in further treatment step, during oven dry, ventilation property is bad, and moisture evaporation is slow, not easily dry, easily from glowing, danger close, need increase automatic turning equipment, equipment is many, complicated production cost is high, is difficult to reduce production cost; 2, finished product is pulverized, and dust is a lot, and enterprise is difficult to a large amount of production, is unfavorable for the development of enterprise and the raising of economic benefit.
By retrieval, find following two sections of relevant patent documents:
1, preparation method (CN102329227A) technical scheme of application of soluble zinc citrate: be made up of following steps: raw material and proportioning: citric acid, zinc oxide, water are mixed in the ratio of 3:2:1; The reactor of temperature 40-60 degree is put into, start chemical reaction 60-70 minute after mixing; Shut down 30-40 minute, chemical reaction is ripe; Start 40-50 minute, releases the application of soluble zinc citrate under Tc; Filter, packaging final prod after drying.
2, three citric acid monohydrate zinc and preparation method thereof (CN102491893A) preparation method is: obtain zinc carbonate by zinc sulfate and sodium carbonate and synthesize obtained three citric acid monohydrate zinc again with citric acid or be that raw material and citric acid synthesize three citric acid monohydrate zinc by zinc carbonate or zinc oxide.
By contrast, above-mentioned two sections of patent documentations have different significantly from the preparation method of the application.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art part, provide a kind of danger can saved facility investment, reduce costs, remove spontaneous combustion, the product obtained, without the need to pulverizing, avoids the preparation method of a kind of zinc citrate of a large amount of dust.
The technical scheme that technical solution problem of the present invention adopts is:
A preparation method for zinc citrate, step is as follows:
(1) salt-forming reaction step: by citric acid, zinc oxide, initiator, hydromassage that drops in reactor than 1:15:0.5 ~ 0.6:0.02 ~ 0.05, is heated to 70 ~ 80 DEG C, reacts 5 ~ 7 hours, carbonic acid gas is overflowed, obtains zinc citrate while stirring;
(2) baking step: by step (1) in the zinc citrate centrifugation that obtains obtain granular zinc citrate, granular zinc citrate is placed in dry sieve and dries in loft drier, sieve after oven dry and obtain finished lemon/lime acid zinc.
And described initiator is formic acid or acetic acid.
And, step (2) described in dry sieve be the stainless steel dry sieve of breathing freely up and down.
Advantage of the present invention and positively effect are:
1, present method uses citric acid to replace Trisodium Citrate in feeding intake, and use zinc oxide to replace zinc sulfate, the product obtained only has zinc citrate, product is single, purity is high, in particulate state, be easy to dry after separation, the danger of releasing spontaneous combustion, the product obtained, without the need to pulverizing, avoids a large amount of dust.
2, the granular product that obtains of present method, is easy to dry, decreases protection and equipment, saved facility investment, reduced running cost.
3, present method has easy feature convenient and simple for operation, is convenient to realize suitability for industrialized production, enhances productivity.
4, present method in process of production, uses zinc oxide and initiator, ensures to obtain granular product, be beneficial to drying, need not pulverize, avoid dust, simultaneously present method has and realizes simple, easy to operate feature, has saved the investment of production unit, has improve production efficiency.
5, the dry sieve of present method use is the stainless steel dry sieve of breathing freely up and down, makes zinc citrate good permeability, moisture when drying evaporate fast, easy drying, not easily from glowing, safely, without the need to using automatic turning equipment, reducing equipment cost.
Embodiment
Below by specific embodiment, the invention will be further described, and following examples are descriptive, is not determinate, can not limit protection scope of the present invention with this.
Embodiment 1
A preparation method for zinc citrate, step is as follows:
(1) salt-forming reaction step: to heating unit, electricity stirs, and drops into citric acid 100 moles successively, 55 moles, zinc oxide in 100 liters of reactors of thermometer, 2 moles, formic acid, 1500 moles, water, is heated to 70-80 DEG C of reactions while stirring, reaction 6 hours under the condition stirred, carbonic acid gas is overflowed, stop heating, salt-forming reaction completes, and obtains zinc citrate.
(2) baking step: by step (1) in the zinc citrate centrifugation that obtains obtain granular zinc citrate, granular zinc citrate is placed in stainless steel dry sieve ventilative up and down and dries in loft drier, after 24 hours, by the zinc citrate pellet through sieves after oven dry, obtain finished product, the content recording zinc citrate is greater than 15%.
Embodiment 2
A preparation method for zinc citrate, step is as follows:
(1) salt-forming reaction step: to heating unit, electricity stirs, and drops into citric acid 100 moles successively, 55 moles, zinc oxide in 100 liters of reactors of thermometer, 3 moles, formic acid, 1500 moles, water, is heated to 70-80 DEG C of reactions while stirring, reaction 6 hours under the condition stirred, carbonic acid gas is overflowed, stop heating, salt-forming reaction completes, and obtains zinc citrate.
(2) baking step: by step (1) in the zinc citrate centrifugation that obtains obtain granular zinc citrate, granular zinc citrate is placed in stainless steel dry sieve ventilative up and down and dries in loft drier, after 24 hours, by the zinc citrate pellet through sieves after oven dry, obtain finished product, the content recording zinc citrate is greater than 15%.
Embodiment 3
A preparation method for zinc citrate, step is as follows:
(1) salt-forming reaction step: to heating unit, electricity stirs, and drops into citric acid 100 moles successively, 55 moles, zinc oxide in 100 liters of reactors of thermometer, 4 moles, formic acid, 1500 moles, water, is heated to 70-80 DEG C of reactions while stirring, reaction 6 hours under the condition stirred, carbonic acid gas is overflowed, stop heating, salt-forming reaction completes, and obtains zinc citrate.
(2) baking step: by step (1) in the zinc citrate centrifugation that obtains obtain granular zinc citrate, granular zinc citrate is placed in stainless steel dry sieve ventilative up and down and dries in loft drier, after 24 hours, by the zinc citrate pellet through sieves after oven dry, obtain finished product, the content recording zinc citrate is greater than 15%.
Embodiment 4
A preparation method for zinc citrate, step is as follows:
(1) salt-forming reaction step: to heating unit, electricity stirs, and drops into citric acid 100 moles successively, 55 moles, zinc oxide in 100 liters of reactors of thermometer, acetic acid 5 moles, 1500 moles, water, is heated to 70-80 DEG C of reactions while stirring, reaction 6 hours under the condition stirred, carbonic acid gas is overflowed, stop heating, salt-forming reaction completes, and obtains zinc citrate.
(2) baking step: by step (1) in the zinc citrate centrifugation that obtains obtain granular zinc citrate, granular zinc citrate is placed in stainless steel dry sieve ventilative up and down and dries in loft drier, after 24 hours, by the zinc citrate pellet through sieves after oven dry, obtain finished product, the content recording zinc citrate is greater than 15%.
Claims (3)
1. a preparation method for zinc citrate, is characterized in that: step is as follows:
(1) salt-forming reaction step: citric acid, zinc oxide, initiator, hydromassage that are dropped in reactor than 1:15:0.5 ~ 0.6:0.02 ~ 0.05, is heated to 70 ~ 80 DEG C while stirring, reacts 5 ~ 7 hours, carbonic acid gas is overflowed, obtains zinc citrate;
(2) baking step: by step (1) in the zinc citrate centrifugation that obtains obtain granular zinc citrate, granular zinc citrate is placed in dry sieve and dries in loft drier, sieve after oven dry and obtain finished lemon/lime acid zinc.
2. the preparation method of zinc citrate according to claim 2, is characterized in that: described initiator is formic acid or acetic acid.
3. the preparation method of zinc citrate according to claim 1, is characterized in that: step (2) described in dry sieve be the stainless steel dry sieve of breathing freely up and down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410286945.4A CN105218357A (en) | 2014-06-24 | 2014-06-24 | A kind of preparation method of zinc citrate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410286945.4A CN105218357A (en) | 2014-06-24 | 2014-06-24 | A kind of preparation method of zinc citrate |
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| CN105218357A true CN105218357A (en) | 2016-01-06 |
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| CN201410286945.4A Pending CN105218357A (en) | 2014-06-24 | 2014-06-24 | A kind of preparation method of zinc citrate |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110357778A (en) * | 2019-08-02 | 2019-10-22 | 湖南柿竹园有色金属有限责任公司 | A kind of preparation method of bismuth citrate |
| CN111067106A (en) * | 2019-12-17 | 2020-04-28 | 南通励成生物工程有限公司 | Water-soluble zinc citrate and preparation method and application thereof |
-
2014
- 2014-06-24 CN CN201410286945.4A patent/CN105218357A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110357778A (en) * | 2019-08-02 | 2019-10-22 | 湖南柿竹园有色金属有限责任公司 | A kind of preparation method of bismuth citrate |
| CN110357778B (en) * | 2019-08-02 | 2022-02-11 | 湖南柿竹园有色金属有限责任公司 | Preparation method of bismuth citrate |
| CN111067106A (en) * | 2019-12-17 | 2020-04-28 | 南通励成生物工程有限公司 | Water-soluble zinc citrate and preparation method and application thereof |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160106 |
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| WD01 | Invention patent application deemed withdrawn after publication |