About
Circulating blast method®And what is it?
The Circulating Blast Method® is a blasting technique that utilizes highly wear-resistant metallic grinding materials. It involves collecting and sorting both the detached coating residues and the used grinding materials during the blasting process, and then recycling the grinding materials for further use. By recycling the grinding materials, the generation of industrial waste equivalent to the amount used is reduced, resulting in a decrease in environmental impact. Additionally, the generation of dust particles during the blasting process is minimized.
Reduction of industrial waste "Recycling and Reuse System"
The grinding material is not a single-use slag-based non-metallic system, but a metal-based steel grit that does not break.The recovered grinding material is collected by a vacuum recovery device together with the coating film waste, and the coating film waste is sorted by weight difference by a sorting device.It then returns to the hopper tank and is injected again.In this case, the air dryer prevents hardening and rust of the grinding material due to increased humidity.
This is a "recycling and reuse system" that enables the maximum reduction of industrial waste generated by grinding materials.
Award history
List of awards
- Chubu Center for Science and Technology Chairman's Award (2013)
- 国土技術開発賞 地域貢献技術賞(2014)
- Chubu Carbon Offset Grand Prize Contribution Award (2015)
- Good Company Grand Prize Special Award (2016)
- Aichi Environmental Award Excellence Award (2017)
- Environment Award Minister of the Environment Award (2018)
- Environmental Prize of Japan Society of Civil Engineering (2020)
- Japan Construction Machinery and Construction Award - Excellence Award (2020)
- Received the Prime Minister's Award for Merit in promoting Reduction, Reuse, and Recycling in the 3rd year of Reiwa (2021)
- Decarbonization Challenge Cup 2023 Encouragement Award (2023)
- 建設技術審査証明取得技術（建審証 第2201号）
- Ministry of Land, Infrastructure, Transport and Tourism NETIS Registration KT-230028-A
Feature
Features
(01)
Do not make grinding materials into industrial waste
By changing the grinding material for peeling the paint film from the sand to a metal that can be recycled and reused, we succeeded in turning industrial waste into only the paint film waste that has been peeled off..
The reduction amount is 1/40 of that of the conventional method.
In the last fiscal year, we contributed to the reduction of about 65,000 tons of industrial waste.
(02)
Reduction of dust generation
Circulating blast method®︎Unlike the conventional method, "metal-based grinding material" with high wear resistance is used to minimize dust caused by damage to the grinding material.
We protect not only the global environment but also the health of workers.
Good quality assurance is achieved by a good working environment.
(03)
Low cost, improved work efficiency
In the construction of 1,000 square meters, approximately 1t of paint film waste and 40t of grinding material waste were discharged.The recycling and reuse system, which uses the difference in the weight of the coating film waste and the grinding material to separate the waste, has made it possible to make only the coating film waste.
(04)
Greenhouse gases significantly cut
Since industrial waste becomes only paint film waste, greenhouse gases emitted during transportation and disposal are also reduced.
Last year, we succeeded in reducing greenhouse gas emissions by approximately 13,800 tons and 5.6 units at the Tokyo Dome.
Protect
of harmful dust;
external leak.
Full shutdown
Trust
Metropolitan Expressway Co., Ltd.,
As a standard construction method in Shiga Prefecture
Described in the construction guidelines
Education
Development of Guidelines
Thorough safety education through
Establishment of technical training system
Performance
Effect in the field
Pioneer
abrasive circulation type blasting
Pioneer of grinding material recycling type blast
Our company uses the circulating blast method®It is a pioneering presence in the world.
However, with the spread of this method, there are several similar methods that claim the same effect, with large variations in quality and the amount of waste generated.
Circulating blast method by acquiring construction technology examination certificate acquisition technology®If you have any questions, please feel free to contact us and we will be happy to answer any questions you may have.
Do you use hard (brittle) grinding materials?
Grinding materials with high hardness have a low life value, wear quickly, and are prone to sticking to steel, which leads to an increase in industrial waste and a decrease in coating quality.
is the sorting device integrated with the blast tank?
If the sorting device and the blast tank are not integrated, there is a risk that harmful dust will scatter around the construction site.
Do you use a blast-only curing sheet?
It is possible to prevent the leakage of harmful dust by curing and construction with a sheet dedicated to blasting.
Do you manage the PCB contents separately from other equipment?
If work is performed without a clear distinction between dedicated PCB materials and lead materials other than PCBs, there is a risk of contamination of sites that do not contain PCB.
Is it equipped with a suction force that can efficiently recover metal-based abrasives?
If the suction force is insufficient, the grinding agent cannot be recovered efficiently and the efficiency of the blasting operation falls, leading to delays in construction periods and increases in construction costs.
Improved 4 nozzles
Improved 4 nozzles
Improved 1 nozzles
Improved 1 nozzle
Improved 2 nozzles
Improved 2 nozzles