JPH09122657A - Mineral additive for water purifier and its preparation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily incorporate mineral contents such as calcium and magnesium into water by forming a mineral additive for a purifier from a mixture wherein a calcium compd. and a magnesium compd. each with a solubility within a specified solubility range are main ingredients. SOLUTION: When water is purified by means of a purifier or a water- adjusting tool, the mineral additives for incorporating mineral contents such as calcium and magnesium are formed of a granulated moling wherein a calcium compd. and a magnesium compd. with a solubility at 35 deg.C within a range of 0.05-1.00g/100ml are main ingredients. As the calcium compd., calcium carbonate, calcium sulfate, etc., and as the magnesium compd., magnesium carbonate, basic magnesium carbonate, etc., are pref. used. In addition, a mixture compounded by a ratio of 25-40% calcium carbonate, 25-40% calcium sulfate and 15-30% basic magnesium carbonate is pref. used.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mineral additive for a water purifier, and more particularly, a mineral additive for a water purifier for adding Ca or Mg minerals to water when purifying the water with a water purifier or a water conditioner. And a manufacturing method thereof.

[0002]

2. Description of the Related Art Conventionally, in order to make tap water delicious water or change it into water that is good for health and beauty, water purifiers and water conditioners are used to remove not only free chlorine but also calcium and magnesium. Minerals such as are being added. As mineral additives of this type, those obtained by crushing natural stones such as coral stones, fossil shells and barley stones into particles are usually employed.

[0003]

However, with conventional mineral additives, since the solubility of these natural stones in water is extremely low, it is a fundamental problem that mineral ions such as calcium and magnesium hardly elute due to water flow. There was a problem. This has been pointed out, for example, in the “Results of product tests of water purifiers / water purifiers that claim minerals and bacteriostatics” (November 1994) of the National Living Center. Therefore, a main object of the present invention is to enable addition of minerals such as calcium and magnesium to water simply by setting them in a water purifier and a water conditioner and passing water.

[0004]

As a means for solving the above problems, the present invention provides a calcium compound and a magnesium compound having a suitable solubility in water as a source of mineral ions such as calcium ions and magnesium ions. It is used by mixing these at a predetermined ratio, granulating and / or molding, and using the granulated molded product as a mineral additive.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION That is, the mineral additive for a water purifier according to the present invention has a solubility of 0.05 to 1.0 at 25 ° C.
It is composed of a granulated product containing calcium compounds and magnesium compounds as main components in the range of 0 g / 100 ml.

The solubility of the calcium compound and the magnesium compound at 25 ° C. is 0.05 to 1.00 g / 1.
00 ml means that their solubility is 0.05 g / 10
If it is less than 0 ml, it hardly dissolves when passing water, so there is no effect as a mineral additive, and 1.00 g /
If it exceeds 100 ml, it will dissolve in a short time at the beginning of water flow and the effect of use as a mineral additive will not last.

The calcium compound is preferably calcium carbonate, calcium sulfate, calcium oxide, calcium hydroxide or the like, and the magnesium compound is preferably magnesium carbonate, basic magnesium carbonate or magnesium sulfite. It is not limited to these, and the essential point is that it has a solubility within the above range. Further, as the calcium ion supply source, it is not always necessary to use the calcium compound alone, and two or more kinds may be used in combination. This also applies to magnesium compounds as a source of magnesium ions.

The mixing ratio of the calcium compound and the magnesium compound is preferably such that calcium elutes about 2 to 5 times that of magnesium. In a preferred embodiment, the mineral additive is blended in a weight ratio of 25% to 40% calcium carbonate, 25% to 40% calcium sulfate, and 15% to 30% basic magnesium carbonate.

A binder may be added to the water purifier mineral additive, if necessary. As this binder, a general binder usually used for granulation may be used.

The amount of the binder added is preferably 1 to 10% with respect to the total weight of the main components. This is because if the amount of the binder is 1% or less, it is difficult to maintain the shape for a long period of time, and if it exceeds 10%, not only the manufacturing cost becomes high, but also the dissolution rate of the main component is lowered too much and the effect of mineral addition is reduced. Is reduced.

As the granulation molding method of the mineral additive for water purifier, granulation methods such as extrusion granulation, stirring granulation and the like, and molding methods such as uniaxial press molding and CIP molding can be adopted.

By using the present invention, it is possible to easily produce granules and compacts having a high mineral addition ability for use in water purifiers, water conditioners, etc.
By adding minerals such as a and Mg, tap water can be made delicious water or water good for health and beauty.

[0013]

Example 1 Using commercially available high-purity basic magnesium carbonate, calcium carbonate and calcium sulfate as raw materials,
These are blended in a weight ratio of 25% basic magnesium carbonate, 37.5% calcium carbonate, and 37.5% calcium sulfate, and an acrylic ester is used as a binder in the mixture.
The emulsion liquid has a solid content of 2% based on the blended powder.
And then add granules with a stirring granulator to give a diameter of 1
A granulated molded body of 10 mm was obtained, and this was designated as sample A of the mineral additive.

[0014]

Example 2 Basic magnesium carbonate 25%, calcium carbonate 37.5%, and calcium sulfate 37.5% were mixed in a weight ratio, and a methylcellulose aqueous solution as a binder was added to the mixed powder in a solid content of 2%. So that it is added, mixed and extruded to a diameter of 2 mm and a length of 3 to 8 mm.
The granulated molded product of was obtained, and this was used as sample B of the mineral additive.

[0015]

Comparative Example For comparison, small coral stones (2 to 5 mm, sample C) and small shell fossils (2 to 5 mm, sample D) were prepared as mineral additives.

50 g of each sample was placed in a vinyl chloride cartridge, tap water was passed at 5 L / min, and Ca concentration (ppm) and Mg concentration (ppm) in the water after passing water were measured. The results for calcium are shown in Table 1 and the results for magnesium are shown in Table 2.

[0017]

[Table 1] ABCD Water flow rate Example 1 Example 2 Coral stone Shell fossil 0L 14ppm 14ppm 14ppm 14ppm 10L 30ppm 32ppm 14ppm 14ppm 50L 26ppm 26ppm 14ppm 14ppm 100L 20ppm 21ppm 14ppm 14ppm 14ppm 500L 15ppm

[0018]

[Table 2] ABCD Water flow rate Example 1 Example 2 Coral stone Shell fossil 0L 3ppm 3ppm 3ppm 3ppm 3ppm 10L 7ppm 7ppm 3ppm 3ppm 50L 8ppm 6ppm 3ppm 3ppm 100L 12ppm 5ppm 3ppm 3ppm 500L 4ppm

From the results shown in Tables 1 and 2, it is understood that the mineral additive according to the present invention can easily add calcium and magnesium ions only by setting it in a water purifier and a water conditioner and passing water.

[0020]

As is apparent from the above description, the present invention has a solubility of 0.05 to 1.00 (g / 100 ml, 25
(° C) A mixture of calcium and magnesium compounds and granulated and / or molded product is used as a mineral additive. By setting it in a water purifier and a water conditioner, minerals are added to tap water. be able to.

Claims (5)

[Claims] 1. The solubility at 25 ° C. is 0.05 to 1.0.
Mineral additive for water purifiers, consisting of a mixture containing calcium compounds and magnesium compounds in the range of 0 g / 100 ml. 2. The mineral additive according to claim 1, wherein the calcium compound is at least one selected from the group consisting of calcium carbonate, calcium sulfate, calcium oxide and calcium hydroxide. 3. The mineral additive according to claim 1, wherein the magnesium compound is at least one selected from the group consisting of magnesium carbonate, basic magnesium carbonate and magnesium sulfite. 4. The mineral additive according to claim 1, wherein the calcium carbonate is 25% to 40%, the calcium sulfate is 25% to 40%, and the basic magnesium carbonate is 15% to 30%. 5. A method for producing a mineral additive, which comprises mixing a calcium compound and a magnesium compound having a solubility in 100 ml of water at 25 ° C. in the range of 0.05 to 1.00 g, and granulating or molding.