CN117049581A - Preparation method of light calcium carbonate for food - Google Patents
Preparation method of light calcium carbonate for food Download PDFInfo
- Publication number
- CN117049581A CN117049581A CN202311025004.0A CN202311025004A CN117049581A CN 117049581 A CN117049581 A CN 117049581A CN 202311025004 A CN202311025004 A CN 202311025004A CN 117049581 A CN117049581 A CN 117049581A
- Authority
- CN
- China
- Prior art keywords
- calcium carbonate
- light calcium
- parts
- food
- carbon dioxide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 title claims abstract description 106
- 229910000019 calcium carbonate Inorganic materials 0.000 title claims abstract description 52
- 235000013305 food Nutrition 0.000 title claims abstract description 29
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 68
- 239000000725 suspension Substances 0.000 claims abstract description 61
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims abstract description 40
- 239000000920 calcium hydroxide Substances 0.000 claims abstract description 40
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims abstract description 40
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 34
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 34
- 238000003756 stirring Methods 0.000 claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000008367 deionised water Substances 0.000 claims abstract description 25
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 25
- 239000000853 adhesive Substances 0.000 claims abstract description 24
- 230000001070 adhesive effect Effects 0.000 claims abstract description 24
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000003763 carbonization Methods 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 20
- 239000000203 mixture Substances 0.000 claims abstract description 20
- 239000002994 raw material Substances 0.000 claims abstract description 19
- 235000019738 Limestone Nutrition 0.000 claims abstract description 12
- 239000006028 limestone Substances 0.000 claims abstract description 12
- 239000000292 calcium oxide Substances 0.000 claims abstract description 11
- 235000012255 calcium oxide Nutrition 0.000 claims abstract description 11
- 238000006243 chemical reaction Methods 0.000 claims abstract description 10
- 238000001914 filtration Methods 0.000 claims abstract description 9
- 238000001354 calcination Methods 0.000 claims abstract description 4
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 claims description 32
- 239000011259 mixed solution Substances 0.000 claims description 22
- 238000002156 mixing Methods 0.000 claims description 10
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims description 9
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 9
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 9
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 9
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 9
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims description 9
- 239000004571 lime Substances 0.000 claims description 9
- GWEHVDNNLFDJLR-UHFFFAOYSA-N 1,3-diphenylurea Chemical compound C=1C=CC=CC=1NC(=O)NC1=CC=CC=C1 GWEHVDNNLFDJLR-UHFFFAOYSA-N 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 8
- ZGTMUACCHSMWAC-UHFFFAOYSA-L EDTA disodium salt (anhydrous) Chemical compound [Na+].[Na+].OC(=O)CN(CC([O-])=O)CCN(CC(O)=O)CC([O-])=O ZGTMUACCHSMWAC-UHFFFAOYSA-L 0.000 claims description 6
- GSFSVEDCYBDIGW-UHFFFAOYSA-N 2-(1,3-benzothiazol-2-yl)-6-chlorophenol Chemical compound OC1=C(Cl)C=CC=C1C1=NC2=CC=CC=C2S1 GSFSVEDCYBDIGW-UHFFFAOYSA-N 0.000 claims description 5
- 239000003109 Disodium ethylene diamine tetraacetate Substances 0.000 claims description 5
- 235000019301 disodium ethylene diamine tetraacetate Nutrition 0.000 claims description 5
- BDOYKFSQFYNPKF-UHFFFAOYSA-N 2-[2-[bis(carboxymethyl)amino]ethyl-(carboxymethyl)amino]acetic acid;sodium Chemical compound [Na].[Na].OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O BDOYKFSQFYNPKF-UHFFFAOYSA-N 0.000 claims description 3
- 239000011230 binding agent Substances 0.000 claims description 3
- MJXOOPBZYCWYIF-UHFFFAOYSA-N dimethylcarbamodithioic acid;sodium Chemical compound [Na].CN(C)C(S)=S MJXOOPBZYCWYIF-UHFFFAOYSA-N 0.000 claims description 3
- 238000003837 high-temperature calcination Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000012535 impurity Substances 0.000 abstract description 8
- 235000013373 food additive Nutrition 0.000 abstract description 4
- 239000002778 food additive Substances 0.000 abstract description 4
- 239000007795 chemical reaction product Substances 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229940088417 precipitated calcium carbonate Drugs 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 229910000616 Ferromanganese Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004067 bulking agent Substances 0.000 description 1
- 238000010000 carbonizing Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 238000012824 chemical production Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 235000015872 dietary supplement Nutrition 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L29/00—Foods or foodstuffs containing additives; Preparation or treatment thereof
- A23L29/015—Inorganic compounds
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/18—Carbonates
- C01F11/181—Preparation of calcium carbonate by carbonation of aqueous solutions and characterised by control of the carbonation conditions
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/18—Carbonates
- C01F11/182—Preparation of calcium carbonate by carbonation of aqueous solutions and characterised by an additive other than CaCO3-seeds
- C01F11/183—Preparation of calcium carbonate by carbonation of aqueous solutions and characterised by an additive other than CaCO3-seeds the additive being an organic compound
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23V—INDEXING SCHEME RELATING TO FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES AND LACTIC OR PROPIONIC ACID BACTERIA USED IN FOODSTUFFS OR FOOD PREPARATION
- A23V2002/00—Food compositions, function of food ingredients or processes for food or foodstuffs
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/80—Compositional purity
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Geology (AREA)
- Nutrition Science (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
- General Health & Medical Sciences (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
The invention discloses a preparation method of light calcium carbonate for food, belonging to the technical field of food additives and preparation. The process comprises the steps of calcining limestone raw materials at high temperature to form burnt lime, adding the burnt lime into deionized water, fully stirring to obtain calcium hydroxide suspension, introducing hot carbon dioxide into the bottom of the suspension, adding an adhesive on the surface of the suspension, continuously stirring for carbonization reaction to obtain a mixture, and filtering to obtain the light calcium carbonate for food. The invention is carbonized by a special adhesive under the high temperature condition, and the quantity of black spots and the content of other impurities in the light calcium carbonate are effectively reduced while the light calcium carbonate is generated by carbonization, so that the high-quality food-grade light calcium carbonate can be obtained.
Description
Technical Field
The invention belongs to the technical field of food additives and preparation, and particularly relates to a preparation method of light calcium carbonate for food.
Background
Unlike natural carbonate, light Calcium Carbonate (LCC), which is also called light calcium carbonate or Precipitated Calcium Carbonate (PCC), is produced by chemical process, and is produced by calcining limestone material to produce lime, adding water to slake lime to calcium hydroxide, carbonizing with carbon dioxide, dewatering and drying the precipitate, and pulverizing. As a basic raw material for chemical production, the light calcium carbonate can be widely applied to various fields of paper making, plastic cement, chemical fiber, rubber, daily chemical industry, paint, medicine, food and the like.
In the food industry, light calcium carbonate is mainly used as a food additive, such as bulking agent, acidity regulator, starter, nutritional supplement, solidifying agent, etc. However, the food grade light calcium carbonate currently on the market for food additives has a large number of black spots, typically more than 10 or even more; black spots are common impurities in light calcium carbonate products, and the reasons for formation of the black spots include original colored minerals in limestone raw materials, such as ferro-manganese and the like, poor quality of a raw slurry refining process, low kiln gas purification degree, rust of equipment, dust mixing in the process and the like. Unlike industrial light calcium carbonate, food light calcium carbonate has strict requirements, so how to effectively control the number of black spots in the production and processing process becomes a key for producing high-quality food-grade light calcium carbonate.
Disclosure of Invention
Aiming at the defects of the prior light calcium carbonate production and processing technology in the background technology, the invention aims to provide a preparation method of light calcium carbonate for food. The preparation method is an improvement on the original process method of high-temperature calcination, water digestion and carbonization of limestone by introducing carbon dioxide, and a novel adhesive is adopted; in the carbonization stage, high-temperature and hot carbon dioxide is introduced from the bottom of the calcium hydroxide suspension, and meanwhile, the binder is added to assist carbonization, so that the quantity of black spots and the content of other impurities in the light calcium carbonate are effectively reduced while the light calcium carbonate is generated by carbonization, and the high-quality food-grade light calcium carbonate can be obtained.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the invention provides a preparation method of light calcium carbonate for food, which comprises the following steps:
s1, taking a limestone raw material, and calcining at a high temperature to obtain calcined lime for later use;
s2, adding burnt lime into deionized water and fully stirring to obtain calcium hydroxide suspension;
s3, introducing hot carbon dioxide to the bottom of the calcium hydroxide suspension, simultaneously adding an adhesive to the surface of the suspension, and continuously stirring to obtain a mixture;
s4, filtering the obtained mixture to obtain solid, namely the food light calcium carbonate.
Preferably, the high temperature calcination temperature of S1 is 1050-1120 ℃.
Preferably, the concentration of the calcium hydroxide suspension obtained in the step S2 is controlled to be 250-400g/L, and the prepared calcium hydroxide suspension is kept continuously stirred at 40rpm for standby.
Preferably, the volume fraction of the carbon dioxide burnt in the step S3 is not less than 99%, and the temperature is controlled between 105 and 120 ℃.
Preferably, the glowing carbon dioxide temperature is 110 ℃.
Preferably, the adhesive of S3 is prepared by mixing sodium dimethyldithiocarbamate, disodium edetate, diphenylurea, carboxymethyl cellulose, n-propanol, deionized water.
Preferably, the adhesive is prepared from the following raw materials in parts by weight: 10-15 parts of dimethyl dithiocarbamic acid sodium, 12-18 parts of ethylene diamine tetraacetic acid disodium, 3-5 parts of diphenyl urea, 5-12 parts of carboxymethyl cellulose, 10-20 parts of n-propanol and 50 parts of deionized water.
Preferably, the preparation method of the adhesive comprises the following steps: mixing n-propanol and deionized water to obtain mixed solution, sequentially adding the rest materials from small to multiple directions, and stirring thoroughly.
Preferably, the carbon dioxide in S3 is introduced at a rate of 30-40% by volume per minute of the calcium hydroxide suspension; the addition amount of the adhesive is 2% -4% of the volume of the calcium hydroxide suspension.
Preferably, the carbon dioxide is stopped when the pH of the mixture obtained by the continuous carbonization reaction of S3 is between 6.8 and 7.0.
Compared with the prior art, the invention has the beneficial effects that:
the traditional production process is that carbon dioxide is introduced into the calcium hydroxide suspension to generate and obtain the light calcium carbonate, but the impurities of the product are more due to raw material impurities, poor control of the production process, equipment problems and the like, and then the black spots and the impurities of the finished light calcium carbonate are removed, so that the effect is not ideal. According to the process, the glow carbon dioxide with proper temperature is introduced from the bottom of the calcium hydroxide suspension, and meanwhile, an adhesive formed by a plurality of components is added on the surface of the suspension; under the conditions of high temperature and adhesive, the carbonization reaction of the process can closely combine black spots and other impurities with the adhesive at the moment of generating the light calcium carbonate, and the quantity of the black spots and the content of other impurities are directly and effectively reduced from the molecular level in the process of generating the light calcium carbonate. The invention overcomes the defects and the shortcomings in the production and processing of the traditional technology and provides a new way for preparing high-quality food-grade light calcium carbonate. The invention improves the original light calcium carbonate production process, the method is simple and easy to operate, and the high-quality food-grade light calcium carbonate can be prepared without adding other complete sets of large-scale equipment, thereby having good application prospect.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described in the following examples. The specific conditions are not noted in the examples and are carried out according to conventional conditions or conditions recommended by the manufacturer. The reagents or apparatus used were conventional products commercially available without the manufacturer's attention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
Example 1
A method for preparing light calcium carbonate for food, comprising the following steps:
1. high-quality limestone raw materials (commercially available) are taken and put into a calciner to be calcined at 1080 ℃ to obtain calcined lime for standby.
2. Adding the obtained burnt lime into deionized water, fully stirring to obtain calcium hydroxide suspension (the concentration of the suspension is controlled to be 320 g/L), and continuously stirring the suspension at 40rpm for standby.
3. Taking 12 parts of sodium dimethyl dithiocarbamate, 15 parts of disodium ethylene diamine tetraacetate, 4 parts of diphenyl urea, 10 parts of carboxymethyl cellulose, 16 parts of n-propanol and 50 parts of deionized water according to parts by weight; and uniformly mixing n-propanol and deionized water to obtain a mixed solution, sequentially adding the rest raw materials into the mixed solution from small to multi-directional according to the dosage, and fully and uniformly stirring to obtain the adhesive mixed solution.
4. And (3) introducing high-purity (99%) carbon dioxide with the temperature of 110 ℃ into the bottom of the calcium hydroxide suspension (the carbon dioxide introducing rate is 1/3 volume per minute of the calcium hydroxide suspension), simultaneously adding the adhesive mixed solution with the volume of 3% of the suspension onto the surface of the calcium hydroxide suspension, continuously stirring for carbonization reaction, and stopping introducing carbon dioxide until the pH value of the mixture is 7.0, thus ending carbonization.
Filtering the reaction product mixture to obtain solid, namely the food light calcium carbonate.
Example 2
A method for preparing light calcium carbonate for food, comprising the following steps:
1. high-quality limestone raw materials (commercially available) are taken and put into a calciner to be calcined at 1050 ℃ to obtain calcined lime for standby.
2. Adding the obtained burnt lime into deionized water, fully stirring to obtain calcium hydroxide suspension (the concentration of the suspension is controlled to be 400 g/L), and continuously stirring the suspension at 40rpm for standby.
3. 15 parts of dimethyl dithiocarbamic acid sodium, 12 parts of ethylene diamine tetraacetic acid disodium, 5 parts of diphenyl urea, 12 parts of carboxymethyl cellulose, 20 parts of n-propanol and 50 parts of deionized water are taken according to parts by weight; and uniformly mixing n-propanol and deionized water to obtain a mixed solution, sequentially adding the rest raw materials into the mixed solution from small to multi-directional according to the dosage, and fully and uniformly stirring to obtain the adhesive mixed solution.
4. And (3) introducing high-purity (99%) carbon dioxide with the temperature of 110 ℃ into the bottom of the calcium hydroxide suspension (the carbon dioxide introducing rate is 30% of the volume per minute of the calcium hydroxide suspension), simultaneously adding the adhesive mixed solution with the volume of 3% of the suspension onto the surface of the calcium hydroxide suspension, continuously stirring for carbonization reaction, and stopping introducing carbon dioxide when the pH value of the mixture is 6.8, thus ending carbonization.
Filtering the reaction product mixture to obtain solid, namely the food light calcium carbonate.
Example 3
A method for preparing light calcium carbonate for food, comprising the following steps:
1. high-quality limestone raw materials (commercially available) are taken and put into a calciner to be calcined at 1120 ℃ to obtain burnt lime for standby.
2. Adding the obtained burnt lime into deionized water, fully stirring to obtain calcium hydroxide suspension (the concentration of the suspension is controlled to be 250 g/L), and continuously stirring the suspension at 40rpm for standby.
3. Taking 10 parts of sodium dimethyl dithiocarbamate, 18 parts of disodium ethylenediamine tetraacetate, 3 parts of diphenyl urea, 5 parts of carboxymethyl cellulose, 10 parts of n-propanol and 50 parts of deionized water according to parts by weight; and uniformly mixing n-propanol and deionized water to obtain a mixed solution, sequentially adding the rest raw materials into the mixed solution from small to multi-directional according to the dosage, and fully and uniformly stirring to obtain the adhesive mixed solution.
4. And (3) introducing high-purity (99%) carbon dioxide with the temperature of 110 ℃ into the bottom of the calcium hydroxide suspension (the carbon dioxide introducing rate is 40% of the volume of the calcium hydroxide suspension per minute), simultaneously adding the adhesive mixed solution with the volume of 3% of the suspension onto the surface of the calcium hydroxide suspension, continuously stirring for carbonization reaction, and stopping introducing carbon dioxide until the pH value of the mixture is 7.0, thus ending carbonization.
Filtering the reaction product mixture to obtain solid, namely the food light calcium carbonate.
Comparative example 1
1. High-quality limestone raw materials (commercially available) are taken and put into a calciner to be calcined at 1080 ℃ to obtain calcined lime for standby.
2. Adding the obtained burnt lime into deionized water, fully stirring to obtain calcium hydroxide suspension (the concentration of the suspension is controlled to be 320 g/L), and continuously stirring the suspension at 40rpm for standby.
3. Taking 12 parts of sodium dimethyl dithiocarbamate, 15 parts of disodium ethylene diamine tetraacetate, 4 parts of diphenyl urea, 10 parts of carboxymethyl cellulose, 16 parts of n-propanol and 50 parts of deionized water according to parts by weight; and uniformly mixing n-propanol and deionized water to obtain a mixed solution, sequentially adding the rest raw materials into the mixed solution from small to multi-directional according to the dosage, and fully and uniformly stirring to obtain the adhesive mixed solution.
4. And (3) introducing high-purity (99%) carbon dioxide with the temperature of 50 ℃ into the bottom of the calcium hydroxide suspension (the carbon dioxide introducing rate is 1/3 volume per minute of the calcium hydroxide suspension), simultaneously adding the adhesive mixed solution with the volume of 3% of the suspension onto the surface of the calcium hydroxide suspension, continuously stirring for carbonization reaction, and stopping introducing carbon dioxide until the pH value of the mixture is 7.0, thus ending carbonization.
And filtering the reaction product mixture to obtain solid, namely the light calcium carbonate.
Comparative example 2
1. High-quality limestone raw materials (commercially available) are taken and put into a calciner to be calcined at 1080 ℃ to obtain calcined lime for standby.
2. Adding the obtained burnt lime into deionized water, fully stirring to obtain calcium hydroxide suspension (the concentration of the suspension is controlled to be 320 g/L), and continuously stirring the suspension at 40rpm for standby.
3. High-purity (99%) carbon dioxide with the temperature of 110 ℃ is introduced into the bottom of the calcium hydroxide suspension (the carbon dioxide introduction rate is 1/3 volume per minute of the calcium hydroxide suspension), the mixture is continuously stirred for carbonization reaction, and the carbon dioxide introduction is stopped when the pH value of the mixture is 7.0, and carbonization is finished.
And filtering the reaction product mixture to obtain solid, namely the light calcium carbonate.
Comparative example 3
1. High-quality limestone raw materials (commercially available) are taken and put into a calciner to be calcined at 1080 ℃ to obtain calcined lime for standby.
2. Adding the obtained burnt lime into deionized water, fully stirring to obtain calcium hydroxide suspension (the concentration of the suspension is controlled to be 320 g/L), and continuously stirring the suspension at 40rpm for standby.
3. 15 parts of disodium ethylenediamine tetraacetate, 10 parts of carboxymethyl cellulose, 16 parts of n-propanol and 50 parts of deionized water are taken according to parts by weight; and uniformly mixing n-propanol and deionized water to obtain a mixed solution, sequentially adding the rest raw materials into the mixed solution from small to multi-directional according to the dosage, and fully and uniformly stirring to obtain the adhesive mixed solution.
4. And (3) introducing high-purity (99%) carbon dioxide with the temperature of 110 ℃ into the bottom of the calcium hydroxide suspension (the carbon dioxide introducing rate is 1/3 volume per minute of the calcium hydroxide suspension), simultaneously adding the adhesive mixed solution with the volume of 3% of the suspension onto the surface of the calcium hydroxide suspension, continuously stirring for carbonization reaction, and stopping introducing carbon dioxide until the pH value of the mixture is 7.0, thus ending carbonization.
And filtering the reaction product mixture to obtain solid, namely the light calcium carbonate.
The light calcium carbonate samples prepared in examples 1 to 3 and comparative examples 1 to 3 were examined according to GB 1886.214-2016 and the like, and the results were as follows.
TABLE 1
* ND is not detected
TABLE 2
The embodiments described above represent only a few preferred embodiments of the present invention, which are described in more detail and are not intended to limit the present invention. It should be noted that various changes and modifications can be made to the present invention by those skilled in the art, and any modifications, equivalent substitutions, improvements, etc. which are within the spirit and principle of the present invention are included in the scope of the present invention.
Claims (10)
1. The preparation method of the light calcium carbonate for the food is characterized by comprising the following steps of:
s1, taking a limestone raw material, and calcining at a high temperature to obtain calcined lime for later use;
s2, adding burnt lime into deionized water and fully stirring to obtain calcium hydroxide suspension;
s3, introducing hot carbon dioxide to the bottom of the calcium hydroxide suspension, simultaneously adding an adhesive to the surface of the suspension, and continuously stirring to obtain a mixture;
s4, filtering the obtained mixture to obtain solid, namely the food light calcium carbonate.
2. The method for preparing light calcium carbonate for food according to claim 1, wherein the high temperature calcination temperature of S1 is 1050-1120 ℃.
3. The method for preparing light calcium carbonate for food according to claim 1, wherein the concentration of the calcium hydroxide suspension obtained in S2 is controlled to be 250-400g/L, and the prepared calcium hydroxide suspension is kept continuously stirred at 40rpm for later use.
4. The method for preparing light calcium carbonate for food according to claim 1, wherein the volume fraction of carbon dioxide burned in S3 is not less than 99%, and the temperature is controlled to 105-120 ℃.
5. The method for producing light calcium carbonate for food according to claim 4, wherein the temperature of the carbon dioxide burned is 110 ℃.
6. The method for preparing the light calcium carbonate for food according to claim 1, wherein the binder S3 is prepared by mixing sodium dimethyl dithiocarbamate, disodium ethylenediamine tetraacetate, diphenylurea, carboxymethyl cellulose, n-propanol and deionized water.
7. The preparation method of the light calcium carbonate for food according to claim 6, wherein the raw materials for preparing the adhesive are specifically as follows in parts by weight: 10-15 parts of dimethyl dithiocarbamic acid sodium, 12-18 parts of ethylene diamine tetraacetic acid disodium, 3-5 parts of diphenyl urea, 5-12 parts of carboxymethyl cellulose, 10-20 parts of n-propanol and 50 parts of deionized water.
8. The method for preparing light calcium carbonate for food according to claim 6, wherein the method for preparing the binder comprises the steps of: mixing n-propanol and deionized water to obtain mixed solution, sequentially adding the rest materials from small to multiple directions, and stirring thoroughly.
9. The method for preparing light calcium carbonate for food according to claim 1, wherein the carbon dioxide in S3 is introduced at a rate of 30% -40% by volume per minute of the calcium hydroxide suspension; the addition amount of the adhesive is 2% -4% of the volume of the calcium hydroxide suspension.
10. The method for producing light calcium carbonate for food according to claim 1, wherein the introduction of carbon dioxide is stopped when the pH of the mixture obtained by the continuous carbonization reaction of S3 is 6.8 to 7.0.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311025004.0A CN117049581A (en) | 2023-08-15 | 2023-08-15 | Preparation method of light calcium carbonate for food |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311025004.0A CN117049581A (en) | 2023-08-15 | 2023-08-15 | Preparation method of light calcium carbonate for food |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117049581A true CN117049581A (en) | 2023-11-14 |
Family
ID=88662148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311025004.0A Pending CN117049581A (en) | 2023-08-15 | 2023-08-15 | Preparation method of light calcium carbonate for food |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117049581A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5910214A (en) * | 1996-09-11 | 1999-06-08 | You; Kyu Jae | Process for preparing calcium carbonate |
| CN102166020A (en) * | 2011-03-03 | 2011-08-31 | 淄博嘉泽纳米材料有限公司 | Preparation method of surface modified nanometer calcium carbonate for foods |
| US20130336859A1 (en) * | 2010-10-26 | 2013-12-19 | Bahman Tavakkoli | Production of high purity precipitated calcium carbonate |
| CN109497564A (en) * | 2018-12-25 | 2019-03-22 | 杭州海王生物工程有限公司 | A kind of calcium soft capsule and preparation method thereof conveniently taken |
| CN109704382A (en) * | 2018-12-26 | 2019-05-03 | 四川龙蟒磷化工有限公司 | A kind of preparation method of calcium carbonate crystal whisker |
| CN113955789A (en) * | 2021-11-22 | 2022-01-21 | 广西东泰实业有限责任公司 | Preparation method of cubic ultrafine light calcium carbonate |
-
2023
- 2023-08-15 CN CN202311025004.0A patent/CN117049581A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5910214A (en) * | 1996-09-11 | 1999-06-08 | You; Kyu Jae | Process for preparing calcium carbonate |
| US20130336859A1 (en) * | 2010-10-26 | 2013-12-19 | Bahman Tavakkoli | Production of high purity precipitated calcium carbonate |
| CN102166020A (en) * | 2011-03-03 | 2011-08-31 | 淄博嘉泽纳米材料有限公司 | Preparation method of surface modified nanometer calcium carbonate for foods |
| CN109497564A (en) * | 2018-12-25 | 2019-03-22 | 杭州海王生物工程有限公司 | A kind of calcium soft capsule and preparation method thereof conveniently taken |
| CN109704382A (en) * | 2018-12-26 | 2019-05-03 | 四川龙蟒磷化工有限公司 | A kind of preparation method of calcium carbonate crystal whisker |
| CN113955789A (en) * | 2021-11-22 | 2022-01-21 | 广西东泰实业有限责任公司 | Preparation method of cubic ultrafine light calcium carbonate |
Non-Patent Citations (4)
| Title |
|---|
| 刘程: "《食品添加剂实用大全》", 31 January 2004, 北京工业大学出版社, pages: 454 * |
| 国家药典委员会: "《各国药用辅料标准对比手册 第3册》", 31 March 2016, 中国医药科技出版社, pages: 153 * |
| 王华东 等: "《环境中的砷——行为·影响·控制》", 31 August 1992, 中国环境科学出版社, pages: 40 * |
| 王琦;郭德琪;: "轻质碳酸钙制备工艺参数研究", 无机盐工业, no. 03, 13 March 2018 (2018-03-13), pages 46 - 48 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101264920B (en) | Method for preparing micro-fine and ultra-fine calcium carbonate of different crystal forms from carbide slag | |
| CN103693667B (en) | A kind of Rodlike light calcium carbonate and preparation method thereof | |
| CN108975372A (en) | A kind of preparation method of spindle winnofil | |
| CN102275957B (en) | Process for producing high purity magnesium oxide with dolomite | |
| CN114921851B (en) | Calcium carbonate whisker prepared by carbide slag carbonization and preparation method thereof | |
| CN103668424A (en) | Method utilizing calcium carbide slag as raw material to produce gypsum crystal whisker | |
| CN110078390A (en) | A kind of preparation method of high-purity high-quality calcium oxide and calcium hydroxide powder | |
| CN101318683A (en) | Method for preparing strontium carbonate | |
| CN110422869A (en) | A kind of method and super strong gypsum of coproducing alpha-super strong gypsum and sodium chloride | |
| CN111704143A (en) | Production process for preparing composite calcium silicate by using rice hull ash | |
| CN113307295A (en) | Method for producing nano calcium carbonate by using kiln gas with low carbon dioxide concentration | |
| CN112811456A (en) | Nano calcium carbonate with high specific surface area and preparation method thereof | |
| CN113353962A (en) | Method for preparing active nano calcium carbonate at normal temperature and high concentration | |
| CN109824076B (en) | Process for preparing calcium carbonate by bubble membrane method and application thereof | |
| CN108395643B (en) | Modified hydrocalumite for PVC heat stabilizer and clean preparation method thereof | |
| CN108793217A (en) | The preparation method of one bulb tufted shape precipitated calcium carbonate | |
| CN103303955B (en) | Production method of calcium carbonate whisker | |
| CN113247936A (en) | Method for reducing energy consumption in production of nano calcium carbonate | |
| CN117049581A (en) | Preparation method of light calcium carbonate for food | |
| WO2019051987A1 (en) | Preparation method for rodlike precipitated calcium carbonate | |
| JP4157202B2 (en) | Process for producing spindle-shaped calcium carbonate | |
| CN110104666B (en) | Method for preparing anhydrous magnesium carbonate based on hydrothermal carbonization reaction | |
| CN203513832U (en) | Production equipment of calcium sulfate crystal whiskers | |
| CN109354048B (en) | Method for preparing magnesium hydroxide and magnesium carbonate series compound by ion catalysis of magnesite | |
| KR930003750B1 (en) | Process for manufacturing magnesium hydroxide |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |