JP5582599B2 - Weed control method - Google Patents

Description

  The present invention relates to a herbicidal construction method that suppresses the growth of weeds.

  In a planting part of a park, an unpaved passage, or a planting part such as a median strip of a road, weeds grow, and if left untreated, weeds grow and spread.

  2. Description of the Related Art Conventionally, as a herbicidal construction method that suppresses the growth of weeds, a method of covering a planting area with a herbicidal sheet is known. However, there is a concern that this method may interfere with water absorption due to rainfall around the planting.

  In addition, there is a method of suppressing the growth of weeds by laying natural sand or soil on the ground and blocking sunlight. However, there are cases where weed seeds are mixed in natural sand and soil, so weeds may grow and grow from the natural sand and soil laid. Weed seeds can be removed by heat treating natural sand or soil at high temperatures, but this increases the material costs.

  On the other hand, Patent Document 1 discloses a herbicidal construction method for laying and constructing copper smelting slag obtained as a residue of copper refining. Copper refining slag has no problem of weed seeds. However, since copper smelting slag contains metallic iron, the surface immediately rusts and becomes red, and red juice from the rust flows out to the construction site, and red powder from the rust scatters, which improves the aesthetics and environment of the construction site. It may be damaged. In addition, if you touch the smelted copper slag, rust may contaminate your body and clothes. Furthermore, since the copper smelting slag includes a metallic iron and has a dignified shape, the workability is poor due to being stuck in the hand of the operator. Moreover, since it is a terrible shape, it is hard to roll at the time of laying construction, and when it rolls, dust rises and a working environment deteriorates. Grinding copper refining slag improves workability, but the copper refining slag has a new surface and rust progresses, increasing the likelihood that the above red juice and red powder will be generated.

  Patent Document 2 discloses a herbicidal construction method in which a blast furnace slag coated with a resin is laid and constructed as weed control material particles. However, since the resin is coated on the blast furnace slag, the process becomes complicated. Expense becomes expensive.

Japanese Patent Laid-Open No. 2003-219783 Japanese Patent No. 2933566

  The problem to be solved by the present invention is to provide a herbicidal construction method that is inexpensive in material, excellent in workability, and can maintain good aesthetics and environment after construction.

  The herbicidal construction method of the present invention is a method of melting general waste and industrial waste at a high temperature of 1200 ° C. or higher in a waste melting furnace, rapidly pulverizing the generated melt with water, and removing metallic iron by magnetic separation. By laying and constructing the obtained waste melting furnace granulated slag to a predetermined thickness, weed growth from the lower part is suppressed. In addition, the content rate of iron of waste melting furnace granulated slag is 1 mass% or less with metal iron, and is 6 mass% or less with the total iron containing iron oxide.

  Thus, in this invention, a waste melting furnace granulated slag is used. Since this waste melting furnace granulated slag is obtained from the melt of general waste and industrial waste, the material cost is extremely low. In addition, since the waste melting furnace granulated slag is obtained through a high-temperature treatment of 1200 ° C or higher, there is no seed of weeds, so that it is possible to suppress weed growth from below by laying and constructing it to a predetermined thickness. In addition, the generation of weeds from the laying layer can be suppressed. Furthermore, since the waste melting furnace granulated slag is obtained by removing metallic iron by magnetic separation, it does not rust and produce red juice or red powder unlike the above-described copper refining slag. In addition, since the waste melting furnace granulated slag is not a rugged shape like the above-described copper smelting slag, it is easier to roll and has better workability than the copper smelting slag.

  Moreover, in the herbicidal construction method of the present invention, the water retention function of the waste melting furnace granulated slag used for the surface layer portion has an effect of lowering the surface layer temperature after the rain, and can be expected as a countermeasure for heat island.

  In the herbicidal construction method of the present invention, the particle size of the waste melting furnace granulated slag is adjusted by performing at least one of mechanical grinding and grinding of the waste melting furnace granulated slag to adjust the particle size. It is preferable that the waste melting furnace granulated slag is laid and constructed to a predetermined thickness. The mechanical pulverization treatment can be performed by pulverizing the waste melting furnace granulated slag between the rotating teeth and the fixed teeth with an apparatus having a rotating shaft. The mechanical grinding treatment can be performed by putting the waste melting furnace water granulated slag into a rotating drum and grinding the waste melting furnace water granulated slag.

  Waste melting furnace granulated slag can be adjusted in particle size relatively easily by crushing and grinding processes. As a result, the particle size of waste melting furnace granulated slag is uniformly distributed from fine to coarse particles. Thus, the rolling property is improved. In addition, the waste melting furnace granulated slag has an angular shape, but when the grinding process is performed, the angular shape is rounded, and it becomes gentler to the operator's hand, improving the workability and further improving the rolling property. . Furthermore, by laying and constructing waste melting furnace water granulated slag rounded into a square shape by grinding, it becomes gentler to the person, especially at construction sites where people pass, and is less likely to cause injury due to falls. Become. In addition, because waste melting furnace granulated slag is obtained by removing metallic iron by magnetic separation, even if a new surface is created by crushing or grinding, rust is generated like the above-mentioned copper refining slag. Absent.

  In the herbicidal construction method of the present invention, it is preferable to lay and construct at least the surface layer of a waste melting furnace granulated slag mixed with cement or liquid resin. When mixing cement, after laying construction, the surface layer can be appropriately integrated by spraying water on the surface layer. When mixing the liquid resin, the surface layer can be appropriately integrated by the viscosity of the liquid resin. The liquid resin is preferably one that solidifies by natural drying. As described above, the waste melting furnace granulated slag mixed with cement or liquid resin is laid and constructed on at least the surface layer, whereby scattering of the waste melting furnace granulated slag from the surface layer can be prevented.

  Also, the surface layer can be appropriately integrated by spraying a liquid resin on the surface layer of the waste melting furnace granulated slag that has been laid and coating the resin on the surface layer of the waste melting furnace granulated slag, Scattering of the waste melting furnace granulated slag from the surface layer can be prevented. As the liquid resin, those which are solidified by natural drying as described above are preferable.

  Since the waste-melting furnace granulated slag is used in the herbicidal construction method of the present invention, the material cost is low, the workability is excellent, and the aesthetics and environment after construction can be maintained well. Moreover, the novel use of a waste melting furnace granulated slag can be exploited by this invention, and the effective utilization of a waste melting furnace granulated slag can be aimed at.

It is explanatory drawing which shows embodiment of the herbicidal construction method of this invention.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is an explanatory view showing an embodiment of the herbicidal construction method of the present invention. In the present invention, the waste melting furnace granulated slag is laid and constructed in a predetermined thickness on a planting part of a park, a non-paved passage, or a planting part such as a median strip of a road. Suppresses weed growth. Waste smelting furnace granulated slag is a process of melting general waste and industrial waste in a waste melting furnace at a high temperature of 1200 ° C or higher, rapidly pulverizing the melt with water, and removing metallic iron by magnetic separation. Is obtained. In a preferred embodiment, the waste melting furnace water granulated slag is used as the waste melting furnace water granulated slag 1 after the waste melting furnace water granulated slag is put into a rotating drum and subjected to grinding treatment for grinding the waste melting furnace water granulated slag. . In the present invention, the crushing process may be performed instead of the crushing process, or the crushing process may be performed following the crushing process. Moreover, you may lay construction without performing a crushing process and a grinding process.

  FIG. 1A shows an embodiment in which a waste melting furnace granulated slag 1 is rolled and laid to a predetermined thickness. The construction thickness of the waste melting furnace granulated slag 1 is suitably about 3 to 20 cm, but the construction thickness only needs to be enough to block sunlight and suppress weed growth from below, specifically 3 cm. That's all you need. Although the upper limit of the construction thickness is not particularly defined, it is meaningless to make it too thick, so in practice it may be considered that the upper limit is about 20 cm.

  Fig. 1 (b) shows a construction in which waste melting furnace granulated slag 1 is laid and constructed to a predetermined thickness, and further, cement or liquid resin is mixed with waste melting furnace granulated slag on the surface layer (hereinafter referred to as "waste melting furnace" This is an embodiment in which the granulated slag mixture 1a ") is laid and constructed. The construction thickness of the waste melting furnace granulated slag 1 is about 3 to 20 cm, and the construction thickness of the waste melting furnace granulated slag mixture 1a is about 1 to 5 cm.

  When mixing cement, after laying construction, the surface layer is appropriately integrated by spraying water on the surface layer. The mixing ratio of the cement can be appropriately determined, but it is appropriate to mix 3 to 20 parts by mass of cement with respect to 100 parts by mass of the waste melting furnace granulated slag 1. On the other hand, when liquid resin is mixed, the surface layer is appropriately integrated by the viscosity of the liquid resin. The liquid resin is preferably one that solidifies by natural drying. For example, “Sunrose” (sodium carboxymethylcellulose) manufactured by Nippon Paper Chemicals Co., Ltd. can be used. As for the mixing ratio of the liquid resin, it is appropriate to mix 3 to 10 parts by mass of the liquid resin with respect to 100 parts by mass of the waste melting furnace granulated slag 1. The liquid resin was prepared by mixing at a ratio of powder for liquid resin: water = 100: 10.

  Thus, by laying and constructing the waste melting furnace granulated slag mixture 1a on the surface layer, scattering of the waste melting furnace granulated slag from the surface layer can be prevented. In addition, in embodiment of FIG.1 (b), although the waste melting furnace granulated slag mixture 1a was constructed only to the surface layer, you may construct the whole with the waste melting furnace granulated slag mixture 1a. However, in order to prevent dispersion of the waste melting furnace granulated slag from the surface layer, it is sufficient to construct the waste melting furnace granulated slag mixture 1a on the surface layer. It is preferable that the material melting furnace granulated slag 1 is laid and constructed to a predetermined thickness, and the waste melting furnace granulated slag mixture 1a is laid and constructed on the surface layer.

FIG. 1C shows an embodiment in which a waste melting furnace granulated slag 1 is laid and constructed to a predetermined thickness, and a liquid resin 2 is sprayed on the surface layer to coat the resin on the surface of the waste melting furnace granulated slag. . Also according to this embodiment, the surface layer of the waste melting furnace granulated slag 1 can be appropriately integrated, and scattering of the waste melting furnace granulated slag from the surface layer can be prevented. The liquid resin is preferably one that is solidified by natural drying as in the embodiment of FIG. 1B. For example, “Sunrose” manufactured by Nippon Paper Chemicals Co., Ltd. can be used. The spray amount of the liquid resin is preferably about 5 to 80 g / m ² (weight of the liquid resin powder alone).

  Based on the embodiment of FIG. 1 (a), the waste melting furnace granulated slag after the grinding treatment was laid down and laid to a thickness of 5 cm by rolling it into an unpaved passage in the park. The design CBR after laying construction was 20% or more, sufficiently tightened, and the rolling property was also good. And even if 1 year and 4 months passed after laying construction, generation | occurrence | production of the weed was not seen. On the construction surface, there were traces of tires due to the passage of automobiles, but the strength was maintained. In addition, no red juice flowed out or red powder scattered around the construction site.

1 Waste melting furnace granulated slag 1a Waste melting furnace granulated slag mixture 2 Liquid resin

Claims (4)

Municipal waste and industrial waste waste melt melting furnace by melt processing at a high temperature of at least 1200 ° C. occur rapidly triturated with water, Except the metal iron in magnetic separation, metal content of the metal iron A herbicidal construction method that suppresses the growth of weeds from the lower part by laying and constructing a waste melting furnace granulated slag of 1 mass% or less with iron to a predetermined thickness.   The particle size of the waste melting furnace granulated slag is adjusted by performing at least one of mechanical grinding and grinding of the waste melting furnace granulated slag. The herbicidal construction method according to claim 1, wherein the slag is laid and constructed to a predetermined thickness.   The herbicidal construction method according to claim 1 or 2, wherein at least a surface layer of a waste melting furnace granulated slag mixed with cement or a liquid resin is laid and constructed.   The herbicidal construction method according to claim 1 or 2, wherein the resin layer is coated on the surface layer of the waste melting furnace granulated slag by spraying a liquid resin on the surface layer of the waste melting furnace granulated slag that has been laid and constructed.

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