JP4145736B2 - Reef manufacturing method and reef manufacturing apparatus - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for manufacturing a reef and a device for manufacturing a reef, and more specifically to a method for manufacturing a reef and a device for manufacturing a reef that use waste.
[0002]
[Prior art]
Many fishing reefs using waste as a material or raw material have been proposed. For example, JP 08-131016 (plastic, glass, metal, slag and slag crushed material), JP 07-060294 (sludge, slag produced as a by-product during aluminum refining), and JP 07-75462. No. (Hedro) and Special Table No. 2002-521047 (Red Mud, Blast Furnace Slag, Sludge from the Mine Refinery, Glass Fragments, Stone Powder from Pollution Prevention Facilities such as Stone and Aggregate Collection Sites, Water and Sewerage End-of-life treatment plant slurry, domestic waste incinerator ash, paper mill pulp sludge and slurry, thermal power plant coal ash, and coal mining by-products).
[0003]
In addition, as a reef with the function of supplying minerals that promote the growth of seafood and seaweed in the sea, an artificial reef block made of concrete with ionic water containing minerals mainly composed of ferrous ions ( JP 2002-306017), fishing reefs using sulfur concrete blocks produced using coal ash and other waste and by-product sulfur (JP 2002-045078), artificial stones and / or fish reef structures with minerals Artificial fishing reef (JP-A-10-210879) characterized by using a material containing or containing minerals, an artificial material comprising a granular material containing various metal components necessary for algae growth together with dielectric carbon A fish reef (Japanese Patent Laid-Open No. 05-344831) has been proposed.
[0004]
[Problems to be solved by the invention]
Conventional fishing reefs that use waste as a raw material or material require a disposal place for waste in the sea, and are insufficient for improving the growth environment of seafood. It is desirable that the reef not only provide a place for growing seafood but also supply minerals necessary for its growth. Moreover, it is preferable that it can be manufactured easily and inexpensively.
[0005]
In view of such a viewpoint, the present invention is useful not only for disposal of waste but also for improving the growth environment of fish and shellfish, and further presents a method and apparatus for manufacturing a reef that can be manufactured inexpensively and easily. For the purpose.
[0006]
[Means for Solving the Problems]
The method for producing a reef according to the present invention includes a first step of kneading pulp sludge and an iron-containing material to form a hydrous iron-containing material, and a second step of arranging a layer made of the hydrous iron-containing material on the inner surface of the formwork. And a third step of charging the liquid waste into the layer made of the hydrated iron-containing material, and a fourth step of waiting for the liquid waste to solidify and taking it out.
[0007]
By such a procedure, the reduced iron produced from the hydrated iron-containing material is attached to the surface of the manufactured fishing reef. Reduced iron is easy to elute in the sea and promotes adhesion and growth of algae. The pulp sludge that is discharged in large quantities from the paper mill can be reused.
[0008]
By using red mud as the iron-containing material, the cost is reduced.
[0009]
The second step includes a step of charging the hydrated iron-containing material into the perforated mold and heat-molding it. Thereby, the layer which consists of the said hydrous iron containing material can be formed easily. It is easy to adjust moisture.
[0010]
For example, the liquid waste consists of molten slag or desulfurized sulfur.
[0011]
The mold preferably consists of a mold with a large number of holes. Thereby, it becomes easy to discharge | emit excess water | moisture content from the said hydrous iron-containing material.
[0012]
The fishing reef manufacturing apparatus according to the present invention includes a mold and a hydrous iron-containing layer that contains moisture and iron and is arranged in layers on the inner surface of the mold. By providing a hydrous iron-containing layer, a fishing reef that contains a large amount of reduced iron in the surface layer can be produced. Reduced iron is easy to elute in the sea and promotes adhesion and growth of algae. Pulp sludge discharged from paper mills in large quantities can be reused.
[0013]
The fish reef manufacturing apparatus according to the present invention further includes a movable carriage that holds the formwork. This facilitates movement. By rotating a plurality of carriages on the same start, the process from casting to removal of molten slag can be carried out continuously, and the manufacturing process can be saved. Further, efficient recovery of the cooling and exhaust heat of the mold can be performed.
[0014]
The fish reef manufacturing apparatus according to the present invention further includes a formwork support frame that holds the formwork and a movable carriage that supports the formwork support frame. Thereby, movement becomes easy and the heat dissipation from a formwork improves.
[0015]
Preferably, the iron-containing layer includes pulse sludge and an iron-containing material. There is red mud as an iron-containing material. The pulp sludge that is discharged in large quantities from the paper mill can be reused.
[0016]
Preferably, the mold is a mold having a large number of holes. Thereby, it becomes easy to discharge | emit excess water | moisture content from the said hydrous iron-containing material.
[0017]
【Example】
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0018]
FIG. 1 shows an operation flowchart of an embodiment of the present invention. First, as shown in FIG. 2, a wire-shaped formwork support frame 12 is placed on a carriage 10, and a perforated steel formwork 14 is disposed in the formwork support frame 12. The formwork support frame 12 is rotatably and detachably supported by the pillars 10a and 10b that stand on the carriage 10.
[0019]
Red mud and a binder are mixed with pulp sludge having a water content of around 65% and kneaded (S1). Pulp sludge is mostly pulp by volume, but contains much clay by weight. Red mud is a waste generated in the aluminum refining process and contains a lot of iron. Red mud serves as a supply source of ferrous oxide described later. In this example, pulse sludge and red mud were mixed evenly, and glue as a binder was added. The kneaded pulse sludge or the like is poured into the perforated steel mold 14 on the carriage 10 and heat-molded (S2). As a result, a water-containing mud mold 16 having a predetermined thickness is formed on the inner surface of the perforated steel mold 14. Depending on the viscosity and moisture of pulp sludge or the like, simple molding may be used, but by heat molding, pulse sludge or the like can be molded quickly and easily into a desired shape. Since many holes are drilled in the perforated steel mold 14, the water leached from the water-containing mud mold 16 when the hydrous mud mold 16 is heated is easily discharged to the outside of the perforated steel mold 14. be able to.
[0020]
FIG. 3 shows a perspective view of the mold in a state in which the hydrous mud mold 16 is formed, and FIG. 4 shows an exploded view thereof. The mold of the present embodiment has a structure in which a hydrous mud layer (hydrous mud mold 16) containing pulp sludge and red mud is formed or arranged on the inner surface of a perforated steel mold 14.
[0021]
In parallel with the formation of the water-containing mud mold 16, wastes such as general waste and industrial waste collected in advance are heated and melted to 1200 ° C. or more to form molten slag (S 3).
[0022]
The generated high-temperature molten slag of, for example, 1200 ° C. or more is poured into the hydrous mastication mold 16 (S4). FIG. 5 shows a cross-sectional view of the mold in a state where the molten slag 18 is charged. When the molten slag 18 is poured into the water-containing mud mold 16, the pulp in the water-containing mud mold 16 is carbonized at a high temperature of 1200 ° C or higher. Since the surface of the water-containing mud mold 16 is covered with the molten slag 18 and cut off from the air, the water-containing mud mold 16 is in a steamed state. Moisture contained in the hydrous mastication mold 16 rapidly becomes steam, and due to its vaporization, the surface of the charged molten slag 18 is rapidly cooled and solidified.
[0023]
By providing the formwork support frame 12 between the carriage 10 and the perforated steel formwork 14, heat dissipation from the perforated steel formwork 14 is facilitated.
[0024]
The high-temperature steam generated by the high-temperature molten slag 18 reacts with the pulses in the hydrous mud kneading mold 16 to be reduced. Thereby, the ferrous oxide contained in the red mud in the water-containing mud mold 16 is reduced, and reduced iron that is easily eluted and ionized is generated. That is, after solidification, a film or layer containing a large amount of reduced iron is formed on the surface of the slag 18.
[0025]
Waiting for cooling to a predetermined temperature (S5), the solidified slag 18 is taken out from the perforated steel form 12 and put into the sea as a fishing reef (S6). The portion of the hydrous mold 16 attached to the solidified slag 18 is introduced into the sea as a fishing reef together with the solidified slag, and the portion not attached to the solidified slag 18 is recovered and inserted into an incineration melting furnace for molten slag. Incinerated. The clay component contained in the pulse sludge and the iron and other metals contained in the red mud are reused as molten slag as a raw material for the next fishing reef. As a result, all the raw materials used are used for fishing reef production, and no residue that requires final disposal is generated.
[0026]
When the necessary raw materials and production equipment are mounted on a ship, the procurement, transportation, and input of the manufactured fishing reef are facilitated. That is, if a fishing reef is manufactured as described above at a fishing reef input site, the manufactured reef may be input into the sea on the spot. Procurement and transportation of waste and pulse sludge is also facilitated.
[0027]
The above processes S1 to S6 are repeated until a necessary number of reefs are thrown in or until the prepared waste, pulse sludge and red mud are consumed (S7).
[0028]
Immediately after the molten slag 18 is poured into the hydrous mud mold 16, the surface of the molten slag 18 is rapidly solidified by the moisture contained in the hydrous mud mold 16. However, at the stage where the water content of the water-containing mud mold 16 is lost, the water-containing mud mold 16 is transformed into a porous film having a high heat insulating property. That is, by adjusting the thickness and moisture content of the water-containing mud kneading mold 16 during the heat molding (S2), the cooling / solidification speed of the molten slag 18 can be adjusted.
[0029]
When the fishing reef manufactured in this way is put into the sea, the reduced iron on the surface layer is easily eluted in the seawater and becomes a supply source of iron ions that are insufficient in the seawater. As a result, plant productivity in the input sea area can be greatly increased, and algae adherent growth is also promoted.
[0030]
In this embodiment, pulse sludge and general waste can be processed together, and a large amount of waste can be processed efficiently. The surface layer of the manufactured reef contains a large amount of reduced iron that is easy to elute, so it becomes a supply source of iron to the sea and promotes the adhesion and growth of algae in the sea.
[0031]
Although general waste (molten slag obtained from) is used as the main raw material for fishing reefs, desulfurized sulfur obtained by desulfurization of petroleum may be used.
[0032]
Red mud is exemplified as the iron supply source of the hydrous mud mold, but it goes without saying that other materials containing a large amount of iron can be used.
[0033]
【The invention's effect】
As can be easily understood from the above description, according to the present invention, not only the disposal destination of waste can be secured, but also effective utilization can be achieved. Furthermore, since it is possible to produce a fishing reef that is retained on the surface as reduced iron that easily elutes iron useful for adhesion and growth of algae and the like, the productivity of plants in the input sea area can be greatly increased.
[Brief description of the drawings]
FIG. 1 is a flowchart illustrating a processing procedure according to an embodiment of the present invention.
FIG. 2 is a side view of a cart and a mold according to the present embodiment.
FIG. 3 is a perspective view of a mold according to the present embodiment.
FIG. 4 is an exploded view of a mold according to the present embodiment.
FIG. 5 is a cross-sectional view of a mold in a state where molten slag is injected.
[Explanation of symbols]
10: Dolly 10a, 10b: Support column 12: Formwork support frame 14: Perforated steel mold 16: Hydrous mud mold 18: Molten slag

Claims (11)

A first step (S1) of kneading pulp sludge and iron-containing material to form a hydrous iron-containing material;
A second step (S2) of arranging the layer (16) made of the hydrous iron-containing material on the inner surface of the mold (14);
A third step (S4) of charging the liquid waste (18) into the layer made of the hydrous iron-containing material;
And a fourth step (S5, S6) for taking out the liquid waste (18) after solidification. The method for producing a fishing reef according to claim 1, wherein the iron-containing material contains red mud. The method for producing a fish reef according to claim 1 or 2, wherein the second step comprises a step of introducing the hydrated iron-containing material into the hole mold (14) and performing heat molding. The method for producing a reef according to any one of claims 1 to 3, wherein the liquid waste (18) is made of molten slag. The method for producing a fishing reef according to any one of claims 1 to 3, wherein the liquid waste comprises desulfurized sulfur. The method for producing a fish reef according to any one of claims 1 to 5, wherein the mold (14) is a mold having a large number of holes. A formwork (14);
A hydrous iron-containing layer (16) containing moisture and iron and arranged in layers on the inner surface of the mold (14)
A reef manufacturing apparatus comprising: Furthermore, the reef manufacturing apparatus of Claim 7 which comprises the movable trolley | bogie (10) which hold | maintains the said formwork (14). The reef according to claim 7, further comprising a formwork support frame (12) for holding the formwork (14) and a movable carriage (10) for supporting the formwork support frame (12). Manufacturing equipment. The fishing reef manufacturing apparatus according to any one of claims 7 to 9, wherein the iron-containing layer includes pulse sludge and an iron-containing material. The fishing reef manufacturing apparatus according to any one of claims 7 to 10, wherein the mold is a mold (14) having a large number of holes.

Images