Environmental equipments business

Supporting environmental conservation in the steel industry with proprietary technology

RASA SYSTEM, developed in 1967, is an original technology owned by Rasa Corporation. If molten slag, a byproduct produced when steel is manufactured in a blast furnace, is rapidly cooled with jet water, granulated slag is produced. What continuously collects this slag and turn it into products is a slag granulation plant (RASA SYSTEM). Granulated slag is recycled as raw materials for cement and concrete, soil improvement additives, and paving material, for example. There are few companies in the world that possess such blast furnace slag recycling technology. Rasa Corporation has supplied RASA SYSTEM products not only in Japan, but also to China, South Korea, Taiwan, Brazil, the United Kingdom, Germany, Belgium, and Italy. Recently, the demand for RASA SYSTEM has been increasing in response to the increased new constructions and re-constructions of steelworks around the world, and the demand has also been expanding to such new industrial fields as electric power companies.
Furthermore, when selling RASA SYSTEM, we provide integrated services ranging from the preparation of basic plans, the design of plants to the supports in construction works to the transfer of operating technologies. Rasa Corporation's engineering technologies play an active role in the high acclaim of RASA SYSTEM.

Contributing to a society through industrial waste disposal equipments and recycling systems

In the environmental equipment business, Putzmeister piston pumps being used for sewage disposal and RASA SYSTEM being experiencing growth in demand at steelworks are our core products. In addition, the recycling systems, PARA-ECO-recycling systems, which recycle incinerated ash under harmless condition, are promising products for the future. Rasa Corporation has supplied many Putzmeister piston pumps mainly in the sewerage and electric power sectors but during the past few years, inquiries relating to industrial waste disposal have been increased, and these products are clearly expanding into new markets.

Developing new technologies and products

PARA-ECO-recycling system, a new product that Rasa Corporation developed, started its operation in 2003, as the first system for a commercial furnace. By melting harmful substances such as heavy metals and dioxins contained in incinerated ashes in a newly developed electric resistance furnace, it is possible to recycle them into harmless substances. In recent years, as the depletion of locations for the final disposal of incinerated ash has become a problem, it is likely that recycling will be promoted. We are also developing new recognizing that technologies applicable in new fields. By recognizing that conservation of the global environment is an important issue in the 21st century and by aiming at this growth in market, we are striving to develop new technologies.