阅读说明：本技术 无抗结剂食盐的生产方法、无抗结剂食盐及应用 (Production method of salt without anticaking agent, salt without anticaking agent and application ) 是由 吴英滨 王连贞 张余明 于 2021-09-23 设计创作，主要内容包括：本发明提供一种无抗结剂食盐的生产方法、无抗结剂食盐及应用,具体涉及食盐生产技术领域。该生产方法包括对原料盐进行洗涤的步骤；其中,通过洗涤的次数调节卤水的浓度,洗涤后卤水的浓度为24-25波美度；洗涤的次数为4-11次。洗涤包括洗盐机洗涤、逆流洗涤和搅拌洗涤。洗盐机洗涤的次数为1-3次；逆流洗涤的次数为1-3次；搅拌洗涤的次数为2-5次。本发明提供的无抗结剂食盐的生产方法,从食盐生产的工艺上进行改进,通过多次洗涤去除钙镁离子,防止钙镁含量过高吸湿引起的板结；除尘提高了食盐产品的流动性,使食盐不易结块。在各个生产工艺环节下,综合提高食盐的抗结性能,不添加抗结剂,满足绿色食品食用盐标准。(The invention provides a production method of salt without an anti-caking agent, salt without an anti-caking agent and application thereof, and particularly relates to the technical field of salt production. The production method comprises a step of washing raw material salt; wherein, the concentration of the brine is adjusted by the washing times, and the concentration of the brine after washing is 24-25 Baume degrees; the number of washing times is 4-11. The washing comprises salt washing machine washing, countercurrent washing and stirring washing. The washing times of the salt washing machine are 1-3 times; the number of counter-current washing is 1-3; the number of times of stirring and washing is 2-5 times. The production method of the salt without the anti-caking agent, which is provided by the invention, is improved from the production process of the salt, and calcium and magnesium ions are removed through multiple times of washing, so that hardening caused by overhigh calcium and magnesium content and moisture absorption is prevented; the dust removal improves the fluidity of the salt product, so that the salt is not easy to cake. Under each production process link, the anti-caking property of the salt is comprehensively improved, and the anti-caking agent is not added, so that the salt meets the standard of green food edible salt.)

1. A production method of salt without anticaking agent is characterized by comprising the step of washing raw salt;

wherein the concentration of the brine is adjusted through the washing times, and the washing times are 4-11 times;

the concentration of the washed brine is 24-25 Baume degrees.

2. The method for producing sodium chloride without anti-caking agent according to claim 1, wherein the washing comprises salt washer washing, counter current washing and agitation washing.

3. The method for producing sodium chloride without anti-caking agent according to claim 1, further comprising the steps of charging before washing and crushing, dehydrating, drying and dedusting after washing.

4. The method for producing salt without anticaking agent as claimed in claim 1, wherein the content of sodium chloride in the raw salt is not less than 94%, the content of insoluble substances is not more than 0.25%, and the content of calcium and magnesium ions is not more than 0.45%.

5. The method for producing sodium chloride free of anti-caking agent according to claim 3, wherein the pulverization comprises a first pulverization and a second pulverization.

6. The method for producing sodium chloride without anti-caking agent according to claim 3, wherein the dehydrated sodium chloride has a water content of 3.50g/100g or less.

7. The method for producing sodium chloride without anti-caking agent according to any of claims 3, 5 and 6, further comprising an iodine addition process after said dehydration.

8. The method for producing sodium chloride without anti-caking agent as claimed in claim 3, wherein the temperature of the drying step is 130-180 ℃.

9. The anti-caking agent-free table salt produced by the method for producing anti-caking agent-free table salt according to any one of claims 1 to 8.

10. Use of the anti-caking agent-free table salt produced by the production method according to any one of claims 1 to 8 or the anti-caking agent-free table salt according to claim 9 in seasonings.

Technical Field

The invention relates to the technical field of salt production, in particular to a production method of salt without an anti-caking agent, salt without an anti-caking agent and application of the salt.

Background

The sodium chloride in the salt has stronger hygroscopicity, particularly the powder salt with a certain temperature is easier to absorb moisture in air and sodium chloride, and the specific area of the powder sodium chloride is larger, the moisture absorption probability is higher, the powder salt after moisture absorption is easier to dissolve, and then forms supersaturated solution with other crystals, and is crystallized again, and the steps are repeated, so that the sodium chloride containing more powder is agglomerated in a shorter time, and a lot of inconvenience is brought to transportation and use.

In order to prevent the caking of common salt, in addition to taking precautions in production, packaging, storage and transportation, the addition of an anticaking agent therein is the most effective method. According to the national salt standard, potassium ferrocyanide is the only anticaking agent which can be added into the salt, and the potassium ferrocyanide contains hydrogen cyanide, so that the potassium ferrocyanide is not allowed to be used in food in many countries. According to the regulation of the 'use rule of green food additives' in China, potassium ferrocyanide cannot be used as a food additive in green food under any condition.

There are also some enterprises that add ferric ammonium citrate, silicon dioxide or calcium silicate to salt to prevent the salt from caking. But the ferric ammonium citrate can affect the color of the salt product; silica affects product purity; calcium silicate affects the index of insolubles in water.

In view of the above, the present invention is particularly proposed.

Disclosure of Invention

The invention aims to provide a method for producing salt without an anti-caking agent, which solves the technical problem that salt caking needs to be solved by adding the anti-caking agent in the prior art.

The second purpose of the invention is to provide the salt without anticaking agent, which is not easy to agglomerate, does not influence the quality, and is convenient to store, transport and use.

The third purpose of the invention is to provide the application of the salt without the anticaking agent in the production of the seasoning, which ensures the food safety and is suitable for large-scale popularization and use.

In order to solve the technical problems, the invention adopts the following technical scheme:

the invention provides a production method of salt without anticaking agent, which comprises the steps of washing raw salt;

wherein the concentration of the brine is adjusted through the washing times, and the washing times are 4-11 times;

the concentration of the washed brine is 24-25 Baume degrees.

Further, the washing includes salt washer washing, counter current washing and agitation washing.

Preferably, the number of washing times of the salt washing machine is 1 to 3.

Preferably, the number of counter current washing is 1 to 3.

Preferably, the number of the agitation washing is 2 to 5.

Preferably, the concentration of the brine is 24-24.6 baume degrees. Further, the method also comprises the steps of feeding before washing and crushing, dewatering, drying and dedusting after washing.

Furthermore, the content of sodium chloride in the raw material salt is more than or equal to 94 percent, the content of insoluble substances is less than or equal to 0.25 percent, and the content of calcium and magnesium ions is less than or equal to 0.45 percent.

Preferably, the content of sodium chloride in the raw material salt is more than or equal to 94.8 percent, the content of insoluble substances is less than or equal to 0.20 percent, and the content of calcium and magnesium ions is less than or equal to 0.40 percent.

Further, the concentration of the brine is adjusted by the washing.

Further, the pulverization includes a first pulverization and a second pulverization.

Preferably, the first pulverized particle size is 1.0 to 2.0 mm.

Preferably, the second pulverized particle size is 0.5 to 0.7 mm.

Furthermore, the water content after dehydration is less than or equal to 3.50g/100 g.

Further, the iodizing includes adding potassium iodate, adding potassium iodide, or adding algae iodine.

Further, drying after the iodine adding is also included.

Preferably, the temperature for drying is 130-.

Preferably, the moisture content after drying is less than or equal to 0.40g/100 g.

Further, the dust removal refers to the removal of particles with the diameter less than or equal to 0.15mm of the salt particles.

The invention provides the salt without the anti-caking agent produced by the production method of the first aspect.

The third aspect of the invention provides the application of the salt without anticaking agent in the seasoning.

Preferably, the seasoning is a powdered or granular seasoning.

The invention has at least the following beneficial effects:

the production method of the salt without the anti-caking agent provided by the invention is improved from the production process of the salt, calcium and magnesium ions are removed through multiple times of washing, hardening caused by overhigh calcium and magnesium content and moisture absorption is prevented, insoluble substances contained in salt particles are removed during washing, and the whiteness of a salt product is improved; the salt has improved anti-caking property, and can meet the standard of edible salt for green food without adding anti-caking agent. The production method has high degree of mechanization and stable process, and is suitable for large-scale popularization and use.

The salt without the anti-caking agent provided by the invention can be stored for 6-9 months in a ton bag and can be stored for 2 years in a 500g small bag, the caking phenomenon cannot occur, the quality is not influenced, and the storage, the transportation and the use are convenient.

The application of the salt without the anti-caking agent in the seasoning provides safe and green edible salt for different seasonings, further improves the food safety, and meets the requirements of consumers.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. The components of embodiments of the present invention may be arranged and designed in a wide variety of different configurations.

According to a first aspect of the present invention, there is provided a method for producing a sodium chloride free from an anti-caking agent, comprising the steps of washing a raw salt;

wherein the concentration of the brine is adjusted through the washing times, and the washing times are 4-11 times;

the concentration of the washed brine is 24-25 Baume degrees.

The production method of the salt without the anti-caking agent, which is provided by the invention, is improved from the production process of the salt, and calcium and magnesium ions are removed through multiple times of washing, so that hardening caused by overhigh calcium and magnesium content and moisture absorption is prevented; the salt has improved anti-caking property, and can meet the standard of edible salt for green food without adding anti-caking agent. The production method has high degree of mechanization and stable process, and is suitable for large-scale popularization and use.

The feeding refers to the process of loading raw material salt into a salt washer; the washing refers to the process of flushing and cleaning salt, removing certain impurities on the salt and keeping the purity of the finished salt; the crushing refers to a process of crushing the salt into powder so as to meet different product specifications; dehydration refers to a process of removing water in the salt to keep the salt dry to a certain degree; the iodine addition is a process of adding iodine element into the salt, so that the salt meets the health requirement.

It should be noted that a thin salt layer of more than 5 centimeters must be reserved below the forklift bucket during feeding, and after the thin salt layer is collected, the thin salt layer is no longer used as edible salt production raw materials, so that the pollution of the production raw materials is prevented.

In some embodiments of the invention, the number of washes is typically, but not limited to, 4, 5, 6, 7, 8, 9, 10 or 11.

Further, the washing includes salt washer washing, counter current washing and agitation washing.

The washing of the salt washer is to remove insoluble substances on the surface of the raw material salt; the counter-current washing is carried out by back rinsing, so that impurities with small specific gravity float upwards and overflow from the upper water surface, and the aim of removing the impurities is fulfilled; agitation washing insoluble matter in the raw material salt was removed by agitation washing.

Preferably, the number of washing times of the salt washing machine is 1 to 3.

In some embodiments of the invention, the number of salt washer washes is typically, but not limited to, 1, 2 or 3.

Preferably, the number of counter current washing is 1 to 3.

In some embodiments of the invention, the number of counter current washes is typically, but not limited to, 1, 2 or 3.

Preferably, the number of the agitation washing is 2 to 5.

In some embodiments of the invention, the number of agitated washes is typically, but not limited to, 2, 3, 4, or 5.

Further, the method also comprises the steps of feeding before washing and crushing, dewatering, drying and dedusting after washing.

In a preferred embodiment of the present invention, the method for producing the anti-caking agent-free table salt comprises the steps of feeding, washing, crushing, dehydrating, drying and dedusting.

Furthermore, the content of sodium chloride in the raw material salt is more than or equal to 94 percent, the content of insoluble substances is less than or equal to 0.25 percent, and the content of calcium and magnesium ions is less than or equal to 0.45 percent.

The percentages are all by mass.

Preferably, the content of sodium chloride in the raw material salt is more than or equal to 94.8 percent, the content of insoluble substances is less than or equal to 0.20 percent, and the content of calcium and magnesium ions is less than or equal to 0.40 percent.

In some embodiments of the invention, the sodium chloride content of the starting salt is typically, but not limited to, 94.8%, 95%, 96%, 97%, 98%, 99%, or 99.5%; the content of insolubles is typically, but not limited to, 0%, 0.10%, 0.15%, or 0.20%; the content of calcium and magnesium ions is typically, but not limited to, 0%, 0.10%, 0.20%, 0.30% or 0.40%.

Further, the brine concentration is adjusted by the number of washes.

Preferably, the concentration of the brine is 24-25 baume degrees.

When the concentration of the brine is more than 25 Baume degrees, the magnesium content in the prepared salt product is too high, and the salt product is easy to absorb moisture to cause hardening; when the concentration of the brine is less than 24 Baume degrees, the washing consumption in the washing process is too high, and the production cost is increased.

In some embodiments of the invention, the brine concentration is typically, but not limited to, 24 baume, 24.1 baume, 24.2 baume, 24.3 baume, 24.4 baume, 24.5 baume, 24.6 baume, 24.7 baume, 24.8 baume, 24.9 baume or 25 baume.

Preferably, the concentration of the brine is 24-24.6 baume degrees.

In some preferred embodiments of the invention, the brine concentration is typically, but not limited to, 24 baume, 24.1 baume, 24.2 baume, 24.3 baume, 24.4 baume, 24.5 baume or 24.6 baume.

Further, the pulverization includes a first pulverization and a second pulverization.

Depending on the particle size requirements of the product, in some embodiments of the invention, the pulverization is typically, but not limited to, a first pulverization and a second pulverization.

It should be noted that the "first" and "second" are only used to distinguish different pulverization steps, and are not distinguished in sequence.

Preferably, the first pulverized particle size is 1.0 to 2.0 mm.

In the actual production process, the particle size of the first pulverization and the particle size of the second pulverization are set according to different product requirements, wherein the first pulverization is used for obtaining coarse powder, and the second pulverization is used for obtaining fine powder.

In some embodiments of the invention, the gap between the pair of rollers is adjusted and the particle size of the first comminution is typically, but not limited to, 1.0mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5mm, 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm, or 2.0 mm.

Preferably, the second pulverized particle size is 0.5 to 0.7 mm.

In some embodiments of the invention, the gap between the pair of rollers is adjusted and the particle size of the second comminution is typically, but not limited to, 0.5mm, 0.6mm or 0.7 mm.

Furthermore, the water content after dehydration is less than or equal to 3.50g/100 g.

In some embodiments of the invention, the post-dehydration moisture content is typically, but not limited to, 0.50 g/100g, 1.00 g/100g, 1.50 g/100g, 2.00 g/100g, 2.50 g/100g, 3.00 g/100g, or 3.50g/100 g.

Further, the iodizing includes adding potassium iodate, adding potassium iodide, or adding algae iodine.

In some embodiments of the invention, the iodine addition is typically, but not limited to, potassium iodate addition, potassium iodide addition, or algae iodine addition.

Further, drying after the iodine adding is also included.

It should be noted that, the drying step is to remove moisture before packaging the product so that the moisture content meets the packaging storage requirement.

Preferably, the temperature for drying is 130-.

In some embodiments of the invention, the temperature of the oven drying is typically, but not limited to, 130 ℃, 140 ℃, 150 ℃, 160 ℃, 170 ℃ or 180 ℃. When the drying temperature is lower than 130 ℃, the drying time is longer, and the yield is also influenced because the moisture of the product cannot be ensured to be less than or equal to 0.40g/100 g. When the drying temperature exceeds 180 ℃, the drying cost is increased.

Preferably, the moisture content after drying is less than or equal to 0.40g/100 g.

Furthermore, the dust removal means that the particles with the particle size of less than or equal to 0.15mm in the salt particles are removed, so that the fluidity of the product is improved, and the salt is not easy to agglomerate.

In some embodiments of the present invention, the dust removing process can be performed after drying, after sieving and before packaging, so as to remove salt powder from the salt as much as possible, ensure the fluidity of the salt during storage, and prevent hardening.

The dust removal improves the fluidity of the salt product, so that the salt is not easy to cake; dehydrating to remove water in salt product, and further reducing water content in salt. The production method of the salt without the anticaking agent solves the technical problem that the salt needs to be added with the anticaking agent to prevent caking in the prior art, and comprehensively improves the anticaking property of the salt under each production process link.

Further, screening is also included.

In some embodiments of the invention, the dried product can be further subjected to a screening process, products with different particle sizes are screened according to the particle size requirements of the products, the particle size of the products is controlled to be more than or equal to 85g/100g within 0.15-0.85mm, more than 0.85mm and less than or equal to 10g/100g, and the particle size is less than 0.15mm and less than or equal to 10g/100 g.

In some embodiments of the invention, the moisture content after oven drying is typically, but not limited to, 0.10 g/100g, 0.15g/100g, 0.20 g/100g, 0.25 g/100g, 0.30 g/100g, or 0.40g/100 g.

According to the salt without anticaking agent provided by the second aspect of the invention.

The salt without the anti-caking agent provided by the invention is stored in a ton bag for 6-9 months, can be stored for 2 years after being subpackaged into small bags, does not have the caking phenomenon, has good fluidity, does not influence the quality, and is convenient to store, transport and use.

According to the third aspect of the invention, the salt without anticaking agent is applied to the seasoning.

The application of the salt without the anti-caking agent in the seasoning provides safe and green edible salt for different seasonings, further improves the food safety, and meets the requirements of consumers.

The seasoning can increase the color, fragrance and taste of dishes, promote appetite and is an auxiliary food beneficial to human health. Its main function is to improve the quality of the dish and meet the sensory requirements of consumers, thus stimulating appetite and improving human health. The flavoring agent comprises salty agent, sour agent, sweetener, flavoring agent and pungent agent.

Preferably, the seasoning is a powdered or granular seasoning.

The salt without anticaking agent is not easy to agglomerate, and the powdery or granular seasoning made from the salt can keep a discrete state, has good granule fluidity and is convenient to use.

The present invention will be described in further detail with reference to examples and comparative examples.

Example 1

The embodiment provides salt without anticaking agent, which comprises the following steps:

(1) feeding: the content of sodium chloride in the raw material salt is 95%, the content of insoluble substances is 0.10%, the content of calcium and magnesium ions is 0.20%, and the raw material salt is loaded into a salt washer.

(2) Washing: washing the raw material salt, wherein the washing process comprises 2 times of washing by a salt washing machine (the conveying amount of the raw material is controlled to be 10-12 tons/hour), 2 times of countercurrent washing (the pressure is 1.6Mpa) and 3 times of stirring washing (the running speed is 40 revolutions per minute), and the concentration of the final brine is adjusted to be 24.3 Baume degrees in the washing process.

(3) Crushing: and crushing the obtained final brine, and adjusting the gap between rollers, wherein the granularity of the first crushing is 1.5mm, and the granularity of the second crushing is 0.6mm to obtain a crushed wet product.

(4) And (3) dehydrating: and dehydrating the ground wet product, wherein the dehydration rated rotation speed of a centrifuge is 1490rpm, and the dehydrated moisture content is 2.10g/100 g.

(5) Adding iodine: and (3) uniformly spraying 3-5% potassium iodate solution into the dehydrated wet product through an iodine adding device, and uniformly mixing to obtain the salt without the anticaking agent.

(6) Drying: the obtained salt without the anticaking agent is sent into a fluidized bed for drying, and the drying temperature is 150 ℃. The temperature of the dried salt without the anticaking agent is 45 ℃, and the water content is 0.20 g/100 g.

(7) Screening: and (4) inputting the dried salt without the anticaking agent into a vibrating screen for screening, wherein the granularity is 0.15-0.85mm =90 g/100 g.

(8) And (4) checking: the screened salt without the anti-caking agent was subjected to a whole item test, and the obtained data are shown in table 1.

(9) Packaging: packaging qualified salt without anticaking agent, and subpackaging a part of salt according to 50kg of big package to make each bag have a mass of 50.00 +/-0.30 kg; putting one part of the mixture into a ton bag; one part is packaged into small packages of edible salt (500 g).

Example 2

The embodiment provides salt without anticaking agent, which is different from the embodiment 1 in that the washing process comprises 1 time of salt washing machine washing, 1 time of countercurrent washing and 2 times of stirring washing; the rest steps and raw materials are the same as those in example 1, and are not described again.

Example 3

The embodiment provides salt without anticaking agent, which is different from the embodiment 1 in that the washing process comprises 3 times of salt washing machine washing, 3 times of countercurrent washing and 5 times of stirring washing; the rest steps and raw materials are the same as those in example 1, and are not described again.

Example 4

This example provides a salt without anti-caking agent, which is different from example 1 in that the number of stirring and washing is 5; the rest steps and raw materials are the same as those in example 1, and are not described again.

Example 5

The present example provides a salt without anti-caking agent, which is different from example 1 in that the concentration of the final brine is adjusted to 24 Baume degree during the washing process. The rest steps and raw materials are the same as those in example 1, and are not described again.

Example 6

The present example provides a salt without anti-caking agent, which is different from example 1 in that the concentration of the final brine is adjusted to 24.6 baume degree in the washing process. The rest steps and raw materials are the same as those in example 1, and are not described again.

Example 7

In this example, salt without anti-caking agent was provided, and the concentration of the final brine was adjusted to 25.5 baume degree during the washing process, unlike example 1. The rest steps and raw materials are the same as those in example 1, and are not described again.

Example 8

This example provides a salt without anticaking agent, which is different from example 1 in that the particle size of the first pulverization is 1.0mm and the particle size of the second pulverization is 0.5 mm. The rest steps and raw materials are the same as those in example 1, and are not described again.

Comparative example 1

The comparative example provides a salt without anticaking agent, which is different from example 1 in that the washing process comprises 1 time of salt washer washing, 1 time of counter-current washing and 1 time of stirring washing; the rest steps and raw materials are the same as those in example 1, and are not described again.

Comparative example 2

This comparative example provides a salt without anticaking agent, which is different from example 1 in that a washing step is not included; the rest steps and raw materials are the same as those in example 1, and are not described again.

Test example 1

The salt without the anti-caking agent obtained in examples 1 to 8, comparative example 1 and comparative example 2 was subjected to all tests, item 7 of the specific tests, and the test results are shown in table 1.

TABLE 1 table of salt performance data without anti-caking agent

Test example 2

The anti-caking agent-free table salts obtained in examples 1 to 8, comparative example 1 and comparative example 2 were stored, and the caking state of the table salt was counted at specific time points, and the statistical results are shown in table 2.

Table 2 table salt caking property test table without anticaking agent

It can be seen from tables 1 and 2 that the salt does not harden and is mainly related to brine and crushing for salt washing, which are related to the content of calcium and magnesium ions, granularity, insoluble substances, dehydration effect and other related factors, and the comparison between the large package and the small package product shows that the large package is sealed by a bag sewing machine and is not tightly sealed by the small package, so that the caking of the salt is also related to the quality of the product package.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.