JPH0259421A - Production of moistureproof salt - Google Patents

Production of moistureproof salt

Info

Publication number
JPH0259421A
JPH0259421A JP20802988A JP20802988A JPH0259421A JP H0259421 A JPH0259421 A JP H0259421A JP 20802988 A JP20802988 A JP 20802988A JP 20802988 A JP20802988 A JP 20802988A JP H0259421 A JPH0259421 A JP H0259421A
Authority
JP
Japan
Prior art keywords
salt
component
deliquescent
carbonate
wet
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
Application number
JP20802988A
Other languages
Japanese (ja)
Inventor
Teruo Fujiie
藤家 輝雄
Tokuji Ootsubo
大坪 篤示
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shin Nihon Kagaku Kogyo KK
Original Assignee
Shin Nihon Kagaku Kogyo KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shin Nihon Kagaku Kogyo KK filed Critical Shin Nihon Kagaku Kogyo KK
Priority to JP20802988A priority Critical patent/JPH0259421A/en
Publication of JPH0259421A publication Critical patent/JPH0259421A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To suppress water absorption and to improve flowability by wet-adding a carbonate or hydrogencarbonate to a salt contg. a deliquescent component, e.g., MgCl2 or CaCl2 by a prescribed amt. basing on the amt. of the deliquescent component and by drying them. CONSTITUTION:A carbonate such as Na2CO3 or a hydrogencarbonate such as NaHCO3 is wet-added to a salt contg. 0.0001-0.01eg deliquescent component per 100g salt, e.g., MgCl2 or CaCl2 by an amt. satisfying 0.8-5.0 chemical equiv. ratio to the deliquescent component and they are mixed to obtain a mixture. This mixture is brought into a chemical reaction by drying at >=50 deg.C to form a nondeliquescent component and to produce a moistureproof salt contg. the nondeliquescent component.

Description

【発明の詳細な説明】 [産業上の利用分野] 本発明は、炭酸塩又は炭酸水素塩を湿式で添加し、乾燥
することによる防湿性塩の製造方法に関する。
DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for producing a moisture-proof salt by wet addition of carbonate or hydrogen carbonate and drying.

[従来の技術] 塩は食品用、工業用と幅広く使用されている。[Conventional technology] Salt is widely used for food and industrial purposes.

しかし塩中に含まれる塩化マグネシウム、塩化カルシウ
ムは相対湿度がそれぞれ35%、20%になると吸水す
る性質をもっている。日本の気候条件からすると潮解成
分は水分を吸水する状態にあり、それらを含有する塩の
流動性の悪化の主原因となっている。
However, magnesium chloride and calcium chloride contained in salt have the property of absorbing water when the relative humidity reaches 35% and 20%, respectively. Considering Japan's climate conditions, deliquescent components are in a state of absorbing water, and are the main cause of deterioration in the fluidity of salt containing them.

そこで、従来からこのような塩の吸湿性を改善する研究
がなされ、防湿性塩の製造方法としては次の3つの方法
が実用化されている。
Therefore, research has been carried out to improve the hygroscopicity of such salts, and the following three methods have been put into practical use as methods for producing moisture-proofing salts.

■)熱処理を施す方法 2)結晶をコーティングする方法 3)乾式で炭酸ナトリウム又は炭酸水素ナトリウムを添
加する方法 [発明が解決しようとする課題] しかしながら、 l)の方法は、焼塩として知られてい
るが、熱処理温度を塩化ナトリウムが融解しない範囲に
限定すると潮解成分を非潮解成分にすることは困難であ
る。2)の方法は結晶表面を完全に覆うため性能は満足
できるが、この方法による食塩を口にした場合、味覚、
舌ざわりにおいて、従来の食塩に比べ、かなり異なる感
じがする。また3)の方法の乾式(粉末の添加)では添
加物が潮解成分と接触しにくいため、相当量の潮解成分
が製品中に残留する等いずれも満足できるものではなか
った。
■) Method of applying heat treatment 2) Method of coating crystals 3) Method of adding sodium carbonate or sodium bicarbonate in a dry method [Problem to be solved by the invention] However, method l) is known as baking salt. However, if the heat treatment temperature is limited to a range in which sodium chloride does not melt, it is difficult to convert the deliquescent component into a non-deliquescent component. The performance of method 2) is satisfactory because it completely covers the crystal surface, but when the salt prepared by this method is eaten, the taste and
In terms of texture, it has a very different texture compared to conventional table salt. In addition, in the dry method (addition of powder) of method 3), the additives hardly come into contact with the deliquescent components, so a considerable amount of the deliquescent components remained in the product, and both methods were unsatisfactory.

本発明はこうした実情に鑑み、上記した従来の方法の欠
点を解消した防湿性塩を製造する方法を提供することを
目的とするものである。
In view of these circumstances, it is an object of the present invention to provide a method for producing a moisture-proofing salt that eliminates the drawbacks of the conventional methods described above.

[課題を解決するための手段] 本発明は、塩化マグネシウム、塩化カルシウム等の潮解
成分を含有する塩に、炭酸塩又は炭酸水素塩好ましくは
炭酸ナトリウム又は炭酸水素ナトリウムを潮解成分当た
り当量比で0.8〜5.0倍好ましくは!、0〜3,0
倍湿式添加し加湿式添加ることを特徴とする防湿性塩の
製造方法を要旨とするものである。
[Means for Solving the Problems] The present invention provides a salt containing a deliquescent component such as magnesium chloride or calcium chloride, and a carbonate or hydrogen carbonate, preferably sodium carbonate or sodium hydrogen carbonate, in an equivalent ratio of 0 per deliquescent component. .8 to 5.0 times preferably! ,0~3,0
The gist of this invention is a method for producing a moisture-proofing salt, which is characterized by double-humidity addition and humidification addition.

一般に塩は0.0001〜0.01eq/100g塩の
潮解成分を含有している。本発明の方法は上記の潮解成
分を含有する埋金てに適用できる。
Generally, the salt contains a deliquescent component of 0.0001 to 0.01 eq/100 g salt. The method of the present invention can be applied to a buried metal containing the above-mentioned deliquescent component.

添加を湿式で行えば、塩中に細かく分散している潮解成
分に、添加物を隅無く接触させることができる。本発明
の湿式添加においては、添加する炭酸塩又は炭酸水素塩
水溶液濃度はとくに制限はないが、後の乾燥工程でのエ
ネルギーコストを考慮すれば飽和水溶液もしくはそれよ
り若干低い濃度が好ましい。この添加後の塩を50℃以
上好ましくは70℃以上の温度で乾燥するならば、添加
物(炭酸ナトリウム、炭酸水素ナトリウム等)と潮解成
分(塩化マグネシウム、塩化カルシウム等)が化学反応
を起し、炭酸マグネシウム、酸化マグネシウム、炭酸カ
ルシウム等の非潮解成分が生成する。乾燥方法は上記の
温度条件を満−足するならば、流動法、混合乾燥法、バ
ッチ法、連続法等全ての方法を用いることができる。
If the addition is carried out in a wet manner, the additive can be brought into full contact with the deliquescent components finely dispersed in the salt. In the wet addition of the present invention, the concentration of the carbonate or hydrogen carbonate aqueous solution to be added is not particularly limited, but in consideration of the energy cost in the subsequent drying step, a saturated aqueous solution or a slightly lower concentration is preferred. If the salt after this addition is dried at a temperature of 50°C or higher, preferably 70°C or higher, the additives (sodium carbonate, sodium hydrogen carbonate, etc.) and deliquescent components (magnesium chloride, calcium chloride, etc.) will cause a chemical reaction. Non-deliquescent components such as , magnesium carbonate, magnesium oxide, and calcium carbonate are produced. As long as the above-mentioned temperature conditions are satisfied, all drying methods such as a fluidized method, a mixed drying method, a batch method, and a continuous method can be used.

生成物の主成分である炭酸マグネシウムは、流動化剤と
して知られており食塩の操作性をより向上させることが
できる。
Magnesium carbonate, which is the main component of the product, is known as a fluidizing agent and can further improve the handling of common salt.

流動化剤とは、塩結晶に付着し、帯電除去等による作用
で結晶同士の付若力を減少せしめ流動性を物理的に改善
する物質である。
A fluidizing agent is a substance that adheres to salt crystals and physically improves fluidity by reducing the rejuvenating force between the crystals through actions such as removing charge.

また、本発明の方法により得られた塩は、この流動化剤
の添加効果を一層高めることができる。
Furthermore, the salt obtained by the method of the present invention can further enhance the effect of adding the fluidizing agent.

[実施例] 以下に実施例を示し、本発明を更に詳細に説明する。[Example] EXAMPLES The present invention will be explained in more detail by way of Examples below.

実施例1 下記表−1に示す原料塩に炭酸ナトリウム又は炭酸水素
ナトリウムを潮解成分に対して当量比で1.2倍湿式(
飽和水溶液)又は乾式で添加し、 100℃でIHr乾
燥した。
Example 1 The raw material salt shown in Table 1 below was mixed with sodium carbonate or sodium bicarbonate in an equivalent ratio of 1.2 times to the deliquescent component in a wet process (
(saturated aqueous solution) or dry, and dried under IHr at 100°C.

表−2 表−1 上記のように処理された塩を、湿度72± 5%、温度
25℃の雰囲気中に放置し、その吸水率を測定した。そ
の結果を表−2,3に示す。
Table 2 Table 1 The salt treated as described above was left in an atmosphere with a humidity of 72±5% and a temperature of 25°C, and its water absorption rate was measured. The results are shown in Tables 2 and 3.

表−3 400℃11 rで熱処理したものを実施例1と同様に
吸水率を測定し、比較した。その結果を表−5に示す。
Table 3 The water absorption rates of the samples heat-treated at 400°C and 11 r were measured in the same manner as in Example 1 and compared. The results are shown in Table-5.

表−4 表−2,3より炭酸ナトリウム、炭酸水素ナトリウムの
湿式添加が優れていること力くわ力)る。
Table 4 Tables 2 and 3 show that wet addition of sodium carbonate and sodium hydrogen carbonate is superior.

実施例2 表−4に示す原料塩に炭酸水素ナトリウムを潮解成分に
対して当量比で2.0加湿式(飽和水溶液)で添加し、
70℃で1llr乾燥したものと、表−5 11,0加湿式(飽和水溶液)で添加し、IHr乾燥し
た。
Example 2 Sodium hydrogen carbonate was added to the raw material salt shown in Table 4 at an equivalent ratio of 2.0 to the deliquescent component in a humidified manner (saturated aqueous solution),
It was dried at 70° C. in 1 liter and added in Table 5 11.0 humidification method (saturated aqueous solution) and dried in IHr.

100℃で 表−6 本発明の方法が熱処理法より優れていることがわかる。at 100℃ Table-6 It can be seen that the method of the present invention is superior to the heat treatment method.

実施例3 下記表−6に示す原料塩に炭酸水素ナトリウムを潮解成
分に対して当量比で0.4.0.5.0.6.0.8.
1.0.3.0.5.0.7.0.9.0、上記のよう
に処理された塩を、湿度72±5%、温度25℃の雰囲
気中に放置し、その吸水率を測定した。
Example 3 The equivalent ratio of sodium hydrogen carbonate to the deliquescent component of the raw material salt shown in Table 6 below was 0.4.0.5.0.6.0.8.
1.0.3.0.5.0.7.0.9.0, the salt treated as above was left in an atmosphere with a humidity of 72±5% and a temperature of 25°C, and its water absorption rate was determined. It was measured.

その結果を表−7に示す。The results are shown in Table-7.

表−7 表−8 表−7,8より 0.8〜5.0倍の範囲内にて湿式添
加することがとくに有効であることがわかる。
Table 7 Table 8 From Tables 7 and 8, it can be seen that wet addition within the range of 0.8 to 5.0 times is particularly effective.

実施例4 下記表−9に示す塩に炭酸水素ナトリウムを潮解成分に
対して当量比で3.0加湿式(飽和水溶液)で添加し 
120℃で0.511r乾燥したものと、未処理の塩と
に流動化剤を添加し、流動性を比較した。
Example 4 Sodium hydrogen carbonate was added to the salt shown in Table 9 below at an equivalent ratio of 3.0 to the deliquescent component in a humidified manner (saturated aqueous solution).
A fluidizing agent was added to the salt dried at 120° C. for 0.511r and the untreated salt, and the fluidity was compared.

流動化剤として炭酸マグネシウム或いは第三リン酸カル
シウムを0.3重量%添加した。
0.3% by weight of magnesium carbonate or tribasic calcium phosphate was added as a fluidizing agent.

表−9 流動化剤を添加した6塩を、湿度72±5%、温度25
℃の雰囲気中に放置した後、それらの流動性を評価した
。流動性の評価はCarrの総合評価を用いた。その結
果を表−10、itに示す。
Table-9 6 salts with added fluidizing agent were added at a humidity of 72 ± 5% and a temperature of 25%.
Their fluidity was evaluated after being left in an atmosphere at ℃. Carr's comprehensive evaluation was used for fluidity evaluation. The results are shown in Table 10.

表−10 とができることが判る。特に潮解成分の多い塩において
本発明方法と流動化剤添加を共に行うと効果が高い。
Table 10 It can be seen that the following can be done. Particularly for salts with a large amount of deliquescent components, it is highly effective to use the method of the present invention together with the addition of a fluidizing agent.

[発明の効果] 以上の説明から明らかなように、本発明方法は炭酸塩又
は炭酸水素塩を湿式で微量添加することで塩の吸水を抑
え、流動性を改善し、流動化剤添加の効果を一層高める
ことができる。
[Effects of the Invention] As is clear from the above explanation, the method of the present invention suppresses water absorption of salt by adding a small amount of carbonate or hydrogen carbonate in a wet manner, improves fluidity, and improves the effect of adding a superplasticizer. can be further increased.

表−11 特許出願人 新日本化学工業株式会社 代理人 弁理士 小 松 秀 岳 代理人 弁理士 旭     宏Table-11 Patent applicant Shin Nippon Chemical Industry Co., Ltd. Agent Patent Attorney Hidetake Komatsu Agent Patent Attorney Hiroshi Asahi

Claims (1)

【特許請求の範囲】[Claims] 塩化マグネシウム、塩化カルシウム等の潮解成分を含有
する塩に、炭酸塩又は炭酸水素塩を潮解成分当たり化学
当量比で0.8〜5.0倍湿式添加し、乾燥することを
特徴とする防湿性塩の製造方法。
Moisture-proofing property characterized by wet addition of carbonate or hydrogen carbonate at a chemical equivalent ratio of 0.8 to 5.0 times per deliquescent component to a salt containing a deliquescent component such as magnesium chloride or calcium chloride, and drying. Method of manufacturing salt.
JP20802988A 1988-08-24 1988-08-24 Production of moistureproof salt Pending JPH0259421A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20802988A JPH0259421A (en) 1988-08-24 1988-08-24 Production of moistureproof salt

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20802988A JPH0259421A (en) 1988-08-24 1988-08-24 Production of moistureproof salt

Publications (1)

Publication Number Publication Date
JPH0259421A true JPH0259421A (en) 1990-02-28

Family

ID=16549494

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20802988A Pending JPH0259421A (en) 1988-08-24 1988-08-24 Production of moistureproof salt

Country Status (1)

Country Link
JP (1) JPH0259421A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010105883A (en) * 2008-10-31 2010-05-13 Okutama Kogyo Co Ltd Deliquescence controlling agent, exhaust gas treating agent and method for treating exhaust gas

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010105883A (en) * 2008-10-31 2010-05-13 Okutama Kogyo Co Ltd Deliquescence controlling agent, exhaust gas treating agent and method for treating exhaust gas

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