JP4949304B2 - Equipment for underwater organism settlement, manufacturing method thereof and installation method thereof - Google Patents

Description

  TECHNICAL FIELD The present invention relates to an aquatic organism settlement device for causing corals and seaweeds to grow in water, a manufacturing method thereof, and an installation method thereof.

In recent years, the decline and disappearance of coral reefs and seaweed beds, which are thought to be caused by rising seawater temperature and environmental destruction in coastal waters, has become a major problem, and various attempts to recover the coral reefs and seaweed beds that have declined and disappeared Has been made.
Among them, Patent Documents 1 and 2 propose a method for growing corals and seaweeds using a special-shaped growing device.
Japanese Patent No. 3530838 JP 2004-121195 A

FIG. 1 shows a basic shape of an epiphytic device used in the methods of Patent Documents 1 and 2, FIG. 1 (a) is a side view, and FIG. 1 (b) is a plan view. The growing device A includes a plate-like portion x and a fixing leg y (spacer portion y ₁ and insertion portion y ₂ ) protruding from the lower surface of the plate-like portion, and an upper surface of the plate-like portion x. A hole z for inserting a fixing leg y (insertion portion y ₂ ) of another dressing device A is formed on the side. The growing device A has a diameter of about several centimeters and is usually made of unglazed ceramics.
FIG. 4 shows a method for growing corals using this setting tool A. First, in the setting step shown in FIG. 4 (a), a plurality of setting tools A are attached to each plate. The fixing leg portion y (insertion portion y ₂ ) of the other setting device A is inserted into the hole z on the upper surface side of the shape portion x, and coral larvae are formed between the plate-like portions x of the upper and lower setting devices A. in a state of stacked in multiple stages as settlement-viable clearance D (the clearance by the spacer portion y ₁₎ are formed, placed in coral larvae settlement suitable sites.

Coral larvae that grow on the basement in the sea tend to grow especially near the edge of the bottom surface of the basement, and the coral that has grown on the bottom surface of the basement grows gradually toward the side of the basement. Accordingly, with respect to the set of set-up devices placed on the appropriate place for coral larvae in a stacked state as shown in FIG. Coral larva s ₀ is born. Since the coral larvae s ₀ that have grown on the lower surface of the plate-like part x grow in the gap D (space) between the upper and lower plate-like parts x, they are appropriately protected from predators.

The planting device A on which the coral larvae s ₀ have settled is recovered from the suitable larval settlement site, and if necessary, after undergoing the process of growing the coral larvae in the suitable coral growth site, the base of the coral transplantation site (natural Transplanted into a reef or artificial base). In this transplantation, as shown in FIG. 4 (b), the fixing leg y (insertion portion y ₂ ) of each dressing device A is inserted into the mounting hole p formed on the surface of the base B with an adhesive or the like. Adhering is performed, and the growing device A is fixed to the base B so that a gap C in which coral can grow is formed between the plate-like portion x and the base B. Thereby, the coral s grows gradually while being protected from the predator, and sequentially grows on the side surface / upper surface of the plate-like portion x and the base B.
As described above, the setting device A shown in Patent Documents 1 and 2 aims to proliferate larvae of aquatic organisms while protecting them from predators using their unique shapes.

However, since the conventional dressing devices as described above are made of earthenware, they have the following drawbacks.
(I) The strength of the fixing leg (the part to be inserted into the mounting hole on the base side) and the base part thereof is weak, and it is easy to break due to, for example, the impact of rocks or the like on the seabed where the settling equipment is installed .
(Ii) Even if the fixing leg portion is inserted into the mounting hole on the base side and fixed with an adhesive, the surface is smooth and the adhesiveness is weak, and it is easy to fall off.
For this reason, there are not a few cases in which an epiphytic device and its main body part fall off from the base before a living organism such as coral grows or before it grows sufficiently. In addition, since conventional dressing devices are made of earthenware, there is a problem that the material cost and the fuel cost for firing are high.
In addition, for ceramic appliances (for example, plate-like appliances) other than the shape shown in FIG. 1, although not as much as the appliance shown in FIG. May cause problems.

Accordingly, an object of the present invention is to provide a device for aquatic organism settlement that has excellent strength, is difficult to drop off from a bonded base, and can be manufactured at low cost.
In addition, another object of the present invention is a growing device having a shape as shown in Patent Documents 1 and 2, which has excellent strength, and the fixing leg portion is dropped from the mounting hole on the base side. It is an object of the present invention to provide a device for aquatic organism settlement that is difficult and can be manufactured at low cost.
Another object of the present invention is to provide a method capable of appropriately and efficiently producing such an aquatic organism settlement device.
Another object of the present invention is to provide a method capable of stably installing such an underwater organism settlement device in water.

In order to solve the above-mentioned problems, the present inventors have studied the raw materials and production conditions of an epiphytic appliance, and as a result, mainly made of steelmaking slag and metal Al-containing material, and if necessary, metallic iron and / or Or it discovered that the shaping | molding instrument which has the outstanding performance which can solve the said subject can be manufactured at low cost by shape | molding the raw material mixture which mix | blended iron oxide containing powder, clay, etc., and baking this.
The present invention has been made based on such findings, and the gist thereof is as follows.

[1] A device for aquatic organism settlement comprising a fired body of a raw material mixture mainly composed of steel slag and a metal Al-containing material.
[2] In the aquatic organism settlement apparatus according to [1] above, the raw material mixture further includes metal iron and / or iron oxide-containing powder (including the case where the powder is composed of only metal iron and / or iron oxide) A device for setting aquatic organisms, comprising:
[3] The aquatic organism settlement apparatus according to the above [1] or [2], wherein the raw material mixture further contains clay.
[4] The aquatic organism settlement apparatus according to any one of the above [1] to [3], wherein the raw material mixture further contains a SiO ₂ source other than clay.
[5] The aquatic organism settlement apparatus according to any one of the above [1] to [4], wherein the metal Al-containing material is aluminum dross and / or aluminum polishing dust.

[6] The aquatic organism settlement apparatus according to any one of [1] to [5] above, having a plate-like portion and one or more fixing legs protruding from the lower surface side of the plate-like portion. An instrument for underwater organisms characterized by that.
[7] A method for producing an aquatic organism settlement device, comprising adding a liquid oil to a raw material mainly composed of steelmaking slag and a metal Al-containing material, kneading, molding, and firing the molded body.
[8] In the production method of [7] above, the raw material further contains metallic iron and / or iron oxide-containing powder (including the case where the powder is composed only of metallic iron and / or iron oxide). The manufacturing method of the apparatus for underwater organism settlement.
[9] The method for producing an aquatic organism settlement apparatus according to [7] or [8], wherein the raw material further contains clay.
[10] The method for producing an aquatic organism settlement device according to any one of the above [7] to [9], wherein the raw material further contains a SiO ₂ source other than clay.

[11] The method for producing an aquatic organism settlement device according to any one of the above [7] to [10], wherein the metal Al-containing material is aluminum dross and / or aluminum polishing dust.
[12] A method for manufacturing an aquatic organism settlement device, wherein the molded body is fired at an ambient temperature of 600 to 1200 ° C. in the manufacturing method according to any one of [7] to [11].
[13] In the production method according to any one of [7] to [12], the produced aquatic organism settlement device is a plate-like portion and one or more protruding from the lower surface side of the plate-like portion A method for manufacturing an aquatic organism setting device, comprising:

[14] A method for installing the aquatic organism settlement apparatus according to any one of [1] to [5] above on an underwater base, wherein the aquatic organism settlement apparatus is adhered or fixed to the base. A method for installing an aquatic organism settlement instrument, comprising: installing an aquatic organism settlement instrument on an underwater base.
[15] A method for installing the aquatic organism settlement apparatus according to any one of the above [1] to [5] on an underwater base, wherein a granular uncarbonated Ca-containing raw material is solidified by a carbonation reaction. The carbonated solid block obtained by ligation is used as a base for mounting an instrument to be installed in water, and the aquatic organism settlement instrument is bonded or fixed to the carbonated solid block, thereby aquatic organism settlement. An installation method for an aquatic organism settlement apparatus, characterized in that the apparatus is installed on an underwater base.

[16] A method for installing the aquatic organism settlement apparatus according to [6] above on an underwater base, wherein a fixing leg portion of the underwater organism settlement apparatus is inserted into an attachment hole formed in the base. An installation method for an aquatic organism settlement instrument, wherein the instrument for aquatic organism settlement is installed on an underwater base by inserting and bonding.
[17] A method for installing the aquatic organism settlement apparatus according to [6] above on an underwater base, the carbonic acid obtained by solidifying a granular uncarbonated Ca-containing raw material by a carbonation reaction By using the solidified block as a base for mounting an appliance to be installed in water, and inserting and fixing the fixing leg portion of the underwater organism settlement instrument into the mounting hole formed in the carbonated solid block An installation method for an aquatic organism settlement instrument, comprising: installing an aquatic organism settlement instrument on an underwater base.

The aquatic organism settlement apparatus according to the present invention has excellent strength and is not easily damaged, and has an appropriate surface roughness, and thus has high adhesiveness to the base and is difficult to drop off from the base. In addition, since the raw material is inexpensive and can be fired at a low fire temperature, there is an advantage that it can be manufactured at a low cost. Furthermore, it has excellent surface adhesion and excellent bioadhesiveness and growth due to the minute amount of minerals eluted from the raw material slag component.
Further, in the case of an aquatic organism settlement device having a plate-like portion and one or more fixing legs protruding from the lower surface side of the plate-like portion, the fixing leg portion has excellent strength. In addition, it is difficult to cause damage to the base portion thereof, and has an appropriate surface roughness, so that the adhesiveness is enhanced, and the fixing leg portion is not easily dropped from the mounting hole on the base side. For this reason, it can prevent appropriately that the instrument itself and its main-body part fall off from a base | substrate.

Moreover, according to the manufacturing method of the aquatic organism settlement apparatus which concerns on this invention, such an aquatic organism settlement apparatus can be manufactured appropriately and efficiently.
Furthermore, according to the installation method of the aquatic organism settlement apparatus according to the present invention, by using a carbonate solid body block that is a porous body as a base, high adhesion between the settlement apparatus and the base is obtained, The device itself can be more appropriately prevented from falling off the base. Moreover, the solid carbonate block that does not raise the pH of water like a concrete product and elutes a very small amount of minerals from the slag component, which is a raw material. A good environment can be provided.

The present invention is effective for the growth and growth of corals and seaweeds. In the following description, the coral and seaweed growth and propagation methods using a growing device will be described using coral as an example, but the same method can also be applied to seaweeds and the like.
One embodiment of the device for aquatic organism settlement of the present invention has the same shape as that shown in Patent Documents 1 and 2, and therefore FIG. 1 shows an example of the shape of the device for aquatic organism settlement of the present invention. Show. That is, the growing device A includes a plate-like portion x and a fixing leg y projecting from the lower surface of the plate-like portion. Further, in this example, a hole z for inserting a fixing leg y (insertion portion y ₂ ) of another epidermis device A is formed on the upper surface side of the plate-like portion x. In the present embodiment, the fixing legs y includes an insertion portion y ₂ which is inserted into the hole z other epiphytic appliances A, plate-like epiphytic instrument A of the upper and lower by not inserted into holes z It consists spacer portion y ₁ Metropolitan to form a gap (clearance D shown in FIG. 3 to be described later (a)) between the section x.

Note that the fixing leg y may be configured, for example, as a whole in a truncated cone shape, a conical shape, a columnar shape, a truncated pyramid shape, a truncated pyramid shape, a prism shape, or the like. depending on the depth-diameter thickness and pore z of, it becomes substantially is divided into the spacer portion y ₁ and the insertion portion y _2. Two or more fixing legs y may be provided.
In addition, holes, grooves, slits, irregularities, and the like that allow living larvae and eggs to enter and grow can be formed on the lower surface and side surfaces of the plate upper portion x. Further, the hole z on the upper surface of the plate-like part x is not necessarily provided.
The size of the setting tool A of the present embodiment is not particularly limited, but when used for coral setting, the bottom surface of the plate-like portion x on which the organism is set needs to be exposed to light. If the diameter of the shape portion x is increased, light does not strike the back of the lower surface of the plate-like portion x, and organisms cannot grow. Accordingly, in general, the plate-like part x has a diameter of about 20 mm to 100 mm, and the length of the spacer part y ₁ is several mm from the viewpoint of the growth and growth of organisms and protection from predators. About 20 mm is appropriate.

The dressing device of the present invention is not limited to the embodiment of FIG. 1 and can have any shape / structure. Several embodiments are shown in FIGS.
FIG. 5 shows a plate-shaped epiphysis device, FIG. 6 shows a dome-shaped epiphysis device, and FIG. 7 shows a roof-type epiphysis device. Each of the plate-shaped, dome-shaped, and roof-shaped growing devices also has a function of covering the coral reef and reinforcing the coral reef.
Further, FIG. 8 shows a box-shaped epidermis with the upper part opened or a cylindrical type with the upper and lower parts opened. In the case of a box-type, it may have an upper lid. Further, FIG. 9 shows a box-shaped epiphysis device in which the wall surface has a mesh shape. These box-shaped or tube-shaped settling devices also have functions of protecting juvenile corals and trapping island-forming substances such as coral pieces, foraminifera, and shells by being installed in a coral reef lagoon, for example.

The settling device of the present invention is mainly composed of steelmaking slag and a metal Al-containing material, and if necessary, powder containing metal iron and / or iron oxide (provided that the powder consists only of metal iron and / or iron oxide) ), Clay, and a fired body of a raw material mixture containing an SiO ₂ source other than clay. That is, such a raw material mixture is molded into the shape of an instrument, and this molded body is fired. Here, the raw materials of the fired body are all powders.
The steelmaking slag is slag generated in the steelmaking process of the steelmaking process. Examples of such steelmaking slag include desiliconization slag, dephosphorization slag, desulfurization slag, decarburization slag, cast slag, ore reduction slag, and electric furnace slag, and one or more of these may be used. Can do.

Steelmaking slag contains a considerable amount of iron oxide, and this iron oxide generates a thermite reaction with metal Al during firing. The exothermic reaction at this time causes a low fire temperature (about 600 to 1200 ° C.). Achieve high temperature firing. The high-temperature firing realized by such a thermite reaction densifies the fired body, and solidifies after the iron is dissolved (melted), thereby contributing to the strength development of the fired body. In addition, when iron oxide is dissolved (decomposed) or through formation of pores when a fired body is generated, it is useful for imparting an appropriate roughness to the surface of the instrument. Furthermore, a considerable amount of Ca is contained in the steelmaking slag, and a low melting point compound containing the Ca content is generated at the time of firing, and this low melting point compound contributes to the strength development of the fired body as a binder. Many steelmaking slags also contain Al ₂ O ₃ , and this Al ₂ O ₃ is also a constituent component of the low melting point compound and contributes to the strength development of the fired body as a part of the binder.

The metal Al-containing material is not particularly limited as long as it is a granular material containing metal Al, but preferably contains 30% by mass or more, preferably 40% by mass or more of metal Al. Examples of such a metal Al-containing material include aluminum dross and aluminum polishing dust, and one or more of these can be used. Of these, aluminum dross is a by-product containing metal Al generated in the aluminum production process, and is particularly preferable because it is inexpensive and available in large quantities.
The metallic Al contained in the metallic Al-containing material causes a thermite reaction between the iron oxide in the steelmaking slag at the time of firing, and the metal iron and / or iron oxide-containing powder added as necessary. High-temperature firing at a low fire degree (about 600 to 1200 ° C.) is realized by the reaction. Further, Al 2 _O 3 produced from metal Al during _firing, the Al ₂ O ₃ which further contained originally in the metal Al-containing material becomes a component of the low melting point compounds described above, the strength of the sintered body as part of the binder Contributes to expression.

The metal iron and / or iron oxide-containing powder may be one in which the powder consists only of metal iron and / or iron oxide. Examples of the metal iron and / or iron oxide-containing powder include sintered ore powder (sintered ore powder such as return ore generated in the iron ore sintering process), iron ore powder, mill scale, and steel pickling line recovered powder. (So-called Rusner iron oxide, etc.), refined dust generated in the steel manufacturing process, blast furnace dust, and the like, and one or more of these can be used. The refining dust generated in the steel manufacturing process includes refining dust generated in the hot metal pretreatment process, refining dust (converter OG dust) generated in the converter decarburization process, and the like. These refining dusts are collected by collecting dust from the exhaust gas generated in the refining process.
What is necessary is just to mix | blend the said metal iron and / or iron oxide containing powder as needed, when the amount of iron oxide is insufficient only with the iron oxide contained in steelmaking slag. As described above, iron oxide undergoes a thermite reaction with metal Al during firing, and high-temperature firing at a low fire degree (about 600 to 1200 ° C.) is realized by the exothermic reaction at this time. Moreover, metallic iron generates heat by being oxidized by oxygen in the firing atmosphere, and this also contributes to high-temperature firing.

The clay is blended as necessary as a shape-retaining agent when the raw material mixture is molded (for example, press molding using a mold). Moreover, SiO ₂ contained in the clay also serves as a source of SiO ₂ for the low melting point compound produced during firing.
An SiO ₂ source other than the clay is also blended as necessary. Examples of the SiO ₂ source include silica fume and fly ash, and one or more of these can be used. This SiO ₂ source is a constituent component of a low-melting-point compound generated during firing. Further, this SiO ₂ source also has an effect of improving the formability when forming the raw material mixture.

When the molded body of the raw material mixture is fired, (b) there is a thermite reaction between the metal Al of the metal Al-containing material and the iron oxide in the steelmaking slag, and further the metal iron and / or iron oxide-containing powder. High temperature firing is realized even at a low fire degree (about 600 to 1200 ° C.) by an exothermic reaction, and a fired body that is properly solidified is obtained. (B) Since high temperature firing is realized by the thermite reaction, firing As the body becomes denser, the iron content dissolves (melts) and solidifies, contributing to the strength development of the fired body. (C) Generated from the Ca content contained in the steelmaking slag and the metal Al containing metal Al A low-melting-point compound is produced by the reaction of Al ₂ O ₃ contained in Al ₂ O ₃ or steelmaking slag and SiO ₂ contained in steelmaking slag or clay, and this is used as a bonding material (bond) in the fired body. Contributes to strength development (d) Iron oxide is dissolved (decomposed) by high-temperature firing by thermite reaction to generate gas (oxygen), resulting in coarse bubbles (pores), etc. Air, water, CO ₂ or CO emissions, and evaporation of low-boiling compounds at high temperatures may cause pores). can get.

  Due to these effects, the resulting dressing device of the present invention has excellent overall strength and moderate roughness on the surface. For this reason, it is hard to produce a breakage | damage, and since it has moderate surface roughness, its adhesiveness to a base | substrate is high, and it is hard to drop | omit from a base | substrate. In particular, in the case of the setting tool A shown in FIG. 1, the fixing leg and the base part thereof are hardly damaged, and the fixing leg is not easily dropped from the mounting hole on the base side. Therefore, it can prevent appropriately that the instrument itself and its main-body part fall off from a base | substrate. In addition, since the raw materials are inexpensive and can be fired at a low fire temperature, the fuel cost can be reduced and the production can be performed at a low cost. Furthermore, it has excellent surface adhesion and excellent bioadhesiveness and growth due to the minute amount of minerals eluted from the raw material slag component.

Each material constituting the raw material mixture needs to be in a granular form in order to obtain a dense fired structure having excellent strength. Moreover, it is preferable that those particle sizes are 120 mesh or less especially from a viewpoint of moldability. Therefore, each material mentioned above is grind | pulverized as needed, and is adjusted to a required particle size.
Moreover, as a mixture ratio of a raw material mixture, in order to exhibit the function of each material appropriately as described above, the metal Al-containing material is usually 5 to 20 mass in terms of metal Al with respect to 100 parts by mass of the steelmaking slag. It is preferable to blend about 1 part. For other materials, if necessary, 5 to 20 parts by mass of metal iron and / or iron oxide-containing powder in terms of metal Fe with respect to 100 parts by mass of steelmaking slag, and a SiO ₂ source other than clay or clay. It is preferable to mix | blend in the ratio of about 10-60 mass parts.

Next, a method for producing the aquatic organism settlement device of the present invention as described above will be described.
In this production method, the raw materials as described above, that is, steelmaking slag and metal Al-containing material are mainly used, and if necessary, metal iron and / or iron oxide-containing powder (however, the powder is metal iron and / or iron oxide) The liquid oil is added to and kneaded with a raw material containing clay, a SiO ₂ source other than clay, and then molded, and the molded body is fired.
Each material constituting the raw material is as described above.

The reason why liquid oil instead of water is added to the raw material is that when water is added, metal Al of the metal Al-containing material is hydroxylated and generates heat. Moreover, by using liquid oil, the demoldability at the time of demolding a molded object also improves. There are no particular restrictions on the liquid oil that can be used, and vegetable oils, mineral oils, and the like can be used. For example, using waste oil such as used edible oil (tempura oil) and engine oil is advantageous in terms of production cost.
The amount of liquid oil added is suitably about 8 to 15 parts by mass with respect to 100 parts by mass of the raw material from the viewpoint of shape retention of the molded product.

The raw material to which the liquid oil has been added is kneaded by a kneading means such as a mortar mixer, and then formed into an instrument shape. Usually, this molding is performed by press molding using a mold, but since the raw material contains liquid oil, it is easy to remove from the mold.
Next, the molded body is fired in an oxidizing atmosphere of about 600 to 1200 ° C., preferably about 800 to 1000 ° C. Therefore, it can be fired even in an ordinary earthenware firing kiln (equipment). In this calcination, high temperature calcination of 2700 ° C. or higher is partially realized by the thermite reaction of metal Al and iron oxide contained in the raw material, and the compact is calcinated and solidified. In that case, the sintered body which has the outstanding intensity | strength and moderate roughness on the surface is obtained by the effect of (i)-(d) as described above.

  There is no particular limitation on the form in which the instrument for aquatic organisms of the present invention is installed on an underwater base as an instrument for causing corals and seaweeds to settle. For example, in a device having a form as shown in FIG. 1, as shown in FIG. 4B, the fixing leg y of the device is inserted into an attachment hole p formed in the underwater base B and bonded with an adhesive. To do. Moreover, in the apparatus of the form shown in FIGS. 5-9, what is necessary is just to adhere | attach to the surface of the base | substrate B in water directly with an adhesive agent, or to fix with mechanical fixing means, such as a volt | bolt. Any of them can be used as a coral settlement device by being installed on a base such as a coral reef. FIG. 10 shows an installation example of the setting tool a of FIG. 5 by such a method, and FIG. 11 shows an setting example of the setting tool a of FIG. FIG. 11 shows an example in which the coral reef reef R is covered with a plurality of dome-shaped growing devices a. In these cases, the reinforcing effect of the coral reef may be expected, and in the case of the epiphytic device having the shape as shown in FIGS. 5 to 7, the planting of the epiphytic device A shown in FIG. It can also be used as a business platform. Further, FIG. 12 shows a state in which a plurality of plate-like instruments a shown in FIG. 5 are connected by a connecting tool e and may be installed on the base B in this state, or in this state the coral After the larvae are allowed to grow, the connector e may be removed to separate the plate-like instruments a, and they may be installed on the base B in a form as shown in FIG.

Next, a preferred method for installing the underwater organism settlement device of the present invention on an underwater base will be described.
In this installation method, a carbonate solid body block obtained by solidifying a granular uncarbonated Ca-containing raw material by a carbonation reaction is used as a base for mounting an appliance to be installed in water. By adhering the dressing device of the present invention, the dressing device is installed on the underwater base. Further, in the case of an instrument having a form as shown in FIG. 1 (hereinafter referred to as “establishment instrument A” for convenience of description), the anchoring instrument A is fixed to an attachment hole formed in the carbonate solid block. By inserting and adhering the legs for attachment, the apparatus A for setting the epidermis is installed on the underwater base.

Hereinafter, this installation method will be described with reference to the case of the appliance A.
The attachment device A may be attached to the carbonated solid block before the carbonated solid block is submerged in water or after it is submerged in water.
The carbonated solid block is filled with powdered uncarbonated Ca-containing raw material (for example, steel slag) with moisture added to the mold, and carbonic acid gas is blown into this raw material packed bed, so that the uncarbonated contained in the raw material It is obtained by causing a carbonation reaction to occur in Ca (CaO) and solidifying the raw material packed layer using calcium carbonate produced by this carbonation reaction as a main binder. Such a carbonate solid block is not only very useful from the viewpoint of resource recycling because it can use steel slag and other CaO-containing waste materials as raw materials. It can be said that it is an environmentally friendly material without the risk of raising the pH of water like a product.

  It has been found that such a carbonate solidified block is very suitable as an underwater base for installing the growing device A. That is, since the carbonate solid block is a porous body, the inner surface of the mounting hole formed in the block also has an appropriate surface roughness. By inserting and fixing the fixing leg portion of the dressing device A having a proper surface roughness, a high adhesive strength can be obtained between them, and thus the device itself can be more appropriately prevented from falling off the base. be able to. In addition, the carbonate solid block that becomes the base does not increase the pH of water like a concrete product, and it elutes a minute amount of minerals from the slag component as a raw material. A good environment is provided.

The above-described method for installing the growing device A is suitable for a method for growing corals. FIG. 2 shows an installation example in the case where coral multiplication is performed using an epidermis device A having a shape as shown in FIG. 1, and the epidermis device A is fixed to the base Bm ( Inserted into the mounting hole p formed on the surface of the carbonated solid block) and fixed with an adhesive, a gap C is formed between the plate-like portion x and the surface of the base Bm where coral can grow and grow. In such a state, it is fixed to the base Bm.
Moreover, in order to proliferate coral especially efficiently using such an installation method of the instrument A, it is preferable to install the instrument through the following steps (i) to (iii). .

(I) Settling step: By placing the setting device A on a suitable place for coral larvae, coral larvae are allowed to grow on at least the lower surface of the plate-like portion x. Preferably, as shown to Fig.3 (a), the leg | limb part y (insertion part) for fixation of the some growing instrument A to the hole z of each plate-shaped part x upper surface side is carried out. y ₂ ) was inserted and stacked in multiple stages so that a gap D (a gap by the spacer part y ₁ ) in which coral larvae can grow and grow was formed between the plate-like parts x of the upper and lower setting devices A. In a state, place it in a suitable place for coral larvae. Coral larvae that grow on the basement in the sea tend to grow especially near the edge of the bottom surface of the basement, and the coral that has grown on the bottom surface of the basement grows gradually toward the side of the basement. Therefore, with respect to the set of set-up devices placed on the appropriate place for coral larvae set up in multiple stages as shown in FIG. 3 (a), on the lower surface of the plate-like portion x of each set-up device A. Coral larva s ₀ is born. Since the coral larvae s ₀ that have grown on the lower surface of the plate-like part x grow in the gap D (space) between the upper and lower plate-like parts x, they are appropriately protected from predators.

(Ii) Collection step: The settling device A on which the coral larvae have grown in the settling step is collected from a suitable place for the larvae.
(Iii) Transplanting step: The collected planting device A is transplanted to the base of the coral transplantation site (carbonate solidified block) after passing through the process of growing coral larvae in a suitable coral growth site if necessary. In this transplantation, as shown in FIG. 3 (b), the fixing leg y (insertion portion y ₂ ) of each dressing device A is inserted into the mounting hole p formed on the surface of the base Bm and fixed with an adhesive. Then, the growing device A is fixed to the base Bm so that a gap C in which the coral can grow is formed between the plate-like portion x and the base Bm. As a result, the corals s grow gradually while being protected from predators, and sequentially grow on the side surface / upper surface of the plate-like portion x and the base Bm.
In addition, when it is difficult to carry out the above-described steps (i) to (iii) due to location restrictions or cost, the one obtained by attaching the epidermis appliance A to the carbonized solid block is used as the larva epiphyte. It may be installed (sinked) directly on a suitable place or a planned breeding place to allow coral larvae to settle. Also in this case, the attachment device A may be attached to the carbonated solid block before the carbonated solid block is submerged in water or after it is submerged in water.

Next, in the case where the installation method of the present invention is applied to coral growth, the shape of the carbonized solid block, the attachment form of the establishment instrument (establishment instrument A or other establishment instrument), and the base The preferable conditions regarding the arrangement | positioning form etc. of a carbonic acid solidified body block are demonstrated.
Carbonation solidification used as a base from the viewpoints of ease of attachment (planting) of a settlement device, ease of drilling work when replacing the settlement device A, and stability of the carbonated solid block in water. The shape of the body block is preferably a rectangular parallelepiped (for example, a flat shape of 1000 mm × 1000 mm × 500 mm).
When attaching an epiphytic appliance to a carbonated solid block, it is necessary to obtain a desired coral colony density (for example, ten microbes / m ² ), ease of surface cleaning during maintenance, and the like. Is preferably about 200 mm to 250 mm. Also, especially when attaching an epiphysizing device to the side of the carbonated solid block, the bottom of the side is buried under the influence of drifting sand or sedimentary mud because the coral is difficult to grow due to the influence of drifting sand or sedimentary mud. Where possible, the dressing device is preferably attached to the upper side of the base.

When attaching the settling device A to the carbonated solid block, drill a mounting hole corresponding to the fixing leg of the settling device A in the carbonated block and fill the mounting hole with an underwater adhesive, Insert and attach the fixing leg of the setting tool A.
The arrangement of the carbonated solid block on the sea floor is 2.5 m or more from the viewpoint of workability when installing the epiphytic appliance, and preventing damage to the epiphytic appliance A already installed by the operator. It is preferable that
The work of attaching the settling device to the carbonated solid block is performed in the sea to protect the coral larvae that have grown on the settling device. In the case of a non-installed carbonate solid block, formation of the attachment hole of the carbonate solid block can be performed on land, but in the case of an existing carbonate solid block, it is performed in water.

Hereinafter, basic production conditions of the carbonate solid block used as a base will be described.
The carbonate solidified block is made by bringing a powdery uncarbonated Ca-containing raw material into contact with carbon dioxide in the presence of water, and by reacting the uncarbonated Ca with carbon dioxide via water (carbonation reaction), calcium carbonate is obtained. It is produced by solidifying (consolidating) the raw material using this calcium carbonate as a binder.
The uncarbonated Ca contained in the uncarbonated Ca-containing raw material, that is, CaO and / or Ca (OH) ₂ suffices to be contained at least as a part of the composition of the solid particles, and therefore CaO as a mineral. In addition to Ca (OH) ₂ , 2CaO · SiO ₂ , 3CaO · SiO ₂ , glass, and the like that are present in solid particles as part of the composition are also included.

  Although there is no special restriction | limiting in the kind of the granular uncarbonated Ca containing raw material to be used, For example, steelmaking, such as decarburization slag, dephosphorization slag, desulfurization slag, desiliconization slag, etc. generated in the steel manufacturing process Slag), concrete (for example, concrete waste material), mortar, glass, alumina cement, CaO-containing refractory, and the like, and one or more of these can be used alone or in combination. These materials are crushed into powder as necessary and used as raw materials.

The uncarbonated Ca-containing raw material does not need to be solid particles whose entire amount contains uncarbonated Ca. That is, if the carbonation of the uncarbonated Ca contained in the uncarbonated Ca-containing raw material produces a sufficient amount of CaCO ₃ as a binder for the solidified carbonic acid, the uncarbonated Ca-containing raw material is uncoated Solid particles not containing may be contained. Examples of such solid particles include natural stone, sand, soluble silica, metal (for example, metallic iron, iron oxide) and the like.
Of these, metallic iron, iron oxide, soluble silica, and the like effectively act as nutrients for seawater sulfur and phosphorus fixing agents, aquatic plants, and the like. In addition to these, an arbitrary component (particle) can be contained in an appropriate amount, that is, as long as the strength of the carbonated solid is not reduced.

The particle size of the granular uncarbonated Ca-containing raw material is not particularly limited, but it is preferable that the particle size is fine to some extent in order to secure the contact area with CO ₂ and increase the reactivity. In addition, if the particle size of the uncarbonated Ca-containing raw material is too large, Ca that cannot be carbonated remains inside the raw material particles, so that the raw material particles in the produced carbonate solidified body expand and collapse, causing cracks and the like. In some cases.
The carbonate solid block is generally produced using a mold. That is, a raw material filling layer is formed by filling an uncarbonated Ca-containing raw material appropriately containing water in a mold, and carbon dioxide gas or a carbon dioxide-containing gas is blown into the raw material filling layer so that the whole raw material filling layer is formed. Consolidated.

Examples of the carbon dioxide gas or carbon dioxide-containing gas used for causing the carbonation reaction include lime calcining factory exhaust gas (usually around 25% by volume of CO ₂ ) exhausted in an integrated steelworks and heating furnace exhaust gas ( Usually, CO ₂ : around 6.5% by volume) and the like are suitable, but not limited thereto. In addition, if the CO ₂ concentration in the gas is too low, there arises a problem that the processing efficiency is lowered, but other problems are not exceptional. Therefore, the CO ₂ concentration is not particularly limited, but it is preferable to set the CO ₂ concentration to 3% by volume or more for efficient processing.
Moreover, there is no special restriction | limiting in the supply amount of a carbon dioxide gas, However, As a general guideline, the gas supply amount of about 0.004-0.5m < ³ > / min * t (raw material ton) should just be ensured. Further, there is no special restriction on the gas supply time (carbonation treatment time), but as a guideline, when the supply amount of carbon dioxide gas becomes 3% by mass or more of the mass of the uncarbonated Ca-containing raw material, that is, the gas amount in terms of raw material 1t per 15 m ³ or more, preferably it is preferable to carry out the gas supply to 200 meters ³ or more carbon dioxide is supplied.

The raw materials used were those having a particle size of 125 mesh or less. 40 parts by mass of aluminum dross (metal Al content: 40% by mass), 10 parts by mass of iron oxide powder, and 50 parts by mass of clay were mixed with 100 parts by mass of steel slag (dephosphorized slag) to obtain a raw material mixture. After adding 8-15 mass parts of liquid oil to 100 mass parts of this raw material mixture and knead | mixing with a mortar mixer, it press-molded and obtained the molded object of a shape as shown in FIG. By firing this molded body at 900 ° C. for 8 hours in an oxidizing atmosphere, it was possible to produce a dressing device having high strength and appropriate surface roughness.
As a result of component analysis of this dressing device, T · Fe: 5.5% by mass, FeO: 0.4% by mass, MnO: 0.1% by mass, CaO: 1.2% by mass, SiO ₂ : 26 .5 wt%, MgO: 0.5 _{wt%, Al} 2 O 3: 54.5 _{wt%, P} 2 O 5: 0.3 mass%.

Explanatory drawing which shows an example of the shape of the instrument for underwater organism settlement of the prior art and this invention Explanatory drawing which shows one Embodiment in the case of installing the instrument for aquatic organism settlement of this invention in the base | substrate which consists of a carbonate solidified body block. Explanatory drawing which shows one Embodiment at the time of utilizing the apparatus for aquatic organism settlement of this invention for the proliferation of a coral Explanatory drawing which shows an example of the usage pattern of the instrument for underwater organism settlement of a prior art Explanatory drawing which shows the other example of the shape of the instrument for underwater organism settlement of this invention Explanatory drawing which shows the other example of the shape of the instrument for underwater organism settlement of this invention Explanatory drawing which shows the other example of the shape of the instrument for underwater organism settlement of this invention Explanatory drawing which shows the other example of the shape of the instrument for underwater organism settlement of this invention Explanatory drawing which shows the other example of the shape of the instrument for underwater organism settlement of this invention Explanatory drawing which shows the example of installation of the instrument for underwater organisms shown in FIG. FIG. 6 shows an installation example of the aquatic organism settlement apparatus shown in FIG. 6, FIG. 6 (a) is a perspective view, and FIG. 6 (b) is an arrow view from the II direction of FIG. 6 (a). Explanatory drawing which shows the usage example of the instrument for underwater organisms shown in FIG.

Explanation of symbols

a, A Settling device B, Bm Base x Plate-like part y Fixing leg y ₁ Spacer part y ₂ Insertion part z Hole e Connecting tool R Coral reef

Claims (17)

  An underwater biological settlement device comprising a fired body of a raw material mixture mainly composed of steel slag and a metal Al-containing material.   The raw material mixture further contains metallic iron and / or iron oxide-containing powder (including a case where the powder is composed only of metallic iron and / or iron oxide). Raw instrument.   The underwater organism settlement device according to claim 1 or 2, wherein the raw material mixture further contains clay. The raw material mixture further contains an SiO ₂ source other than clay, and the aquatic organism settlement apparatus according to any one of claims 1 to 3.   The device for aquatic organism settlement according to any one of claims 1 to 4, wherein the metal Al-containing material is aluminum dross and / or aluminum polishing dust.   It has a plate-shaped part and the 1 or 2 or more fixing leg part protrudingly provided by the lower surface side of this plate-shaped part, The aquatic organism settlement as described in any one of Claims 1-5 characterized by the above-mentioned. Instruments.   A method for producing an aquatic organism settlement device, comprising adding a liquid oil to a raw material mainly composed of steel-making slag and a metal Al-containing material, kneading, molding, and firing the molded body.   The raw material further includes metal iron and / or iron oxide-containing powder (including a case where the powder is composed only of metal iron and / or iron oxide). A method for manufacturing appliances.   9. The method for producing an aquatic organism settlement device according to claim 7 or 8, wherein the raw material further contains clay. The raw material further contains a SiO ₂ source other than clay, and the method for producing an aquatic organism settlement device according to any one of claims 7 to 9.   The method for producing an aquatic organism settlement device according to any one of claims 7 to 10, wherein the metal Al-containing material is aluminum dross and / or aluminum polishing dust.   The method for producing an aquatic organism settlement device according to any one of claims 7 to 11, wherein the molded body is fired at an ambient temperature of 600 to 1200 ° C.   The device for aquatic organisms to be produced has a plate-like portion and one or more fixing legs protruding from the lower surface side of the plate-like portion. A method for producing an aquatic organism settlement device according to claim 1. A method for installing the aquatic organism settlement apparatus according to any one of claims 1 to 5 on an underwater base,
A method for installing an aquatic organism settlement instrument, wherein the aquatic organism settlement instrument is installed on an underwater base by bonding or fixing the aquatic organism settlement instrument to a base. A method for installing the aquatic organism settlement apparatus according to any one of claims 1 to 5 on an underwater base,
A carbonate solid body block obtained by solidifying a powdered uncarbonated Ca-containing raw material by a carbonation reaction is used as a base for mounting an appliance to be installed in water, and the underwater organism attachment to the carbonate solid body block. An installation method for an aquatic organism settlement apparatus, wherein the aquatic organism settlement apparatus is installed on an underwater base by adhering or fixing the living apparatus. A method for installing the underwater organism settlement device according to claim 6 on an underwater base,
An aquatic organism deposition device is installed on an underwater substrate by inserting and bonding a fixing leg of the aquatic organism settlement device into a mounting hole formed in the substrate. How to install raw equipment. A method for installing the underwater organism settlement device according to claim 6 on an underwater base,
A carbonated solid block obtained by solidifying a powdered uncarbonated Ca-containing raw material by a carbonation reaction is used as a base for mounting an appliance to be installed in water, and an attachment formed on the carbonated solid block An installation method for an aquatic organism settlement instrument, wherein the aquatic organism settlement instrument is installed on an underwater base by inserting and fixing a fixing leg of the aquatic organism settlement instrument into the hole. .

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