The Furukawa Electric Co., Ltd.

Nobuyoshi Mine

Toshio Horie

Akira Nogami

Shouji Tomioka

Hisatsugu Nakamura

Shoji Tomioka

Katsuo Yamamoto

Toshiaki Nakao

Seiji Fukushima

A waste water-treating method, which comprises the steps of: adjusting the pH value of an aqueous solution containing a nitrous acid radical within a range of 2 to 5; treating said aqueous solution with hydrogen peroxide to oxidize the nitrous acid radical into a nitric acid radical; and throwing away the waste water in the neutralized form.

Method of treating waste water

A vulcanization apparatus for a continuous length of article comprises a curved vulcanizing pipe devised to ensure, with the aid of a heating liquid medium recirculation system assembled thereto, a stable and even vulcanization of such a continuous length of article without damaging the same, a tubular cleaner for removing the heating liquid medium deposited on said continuous length of article and a cooling pipe, said vulcanizing pipe, tubular cleaner and cooling pipe being connected together in the cited sequence, without a provision of any spacious separating means or sealing means therebetween, in an arrangement in which a mutual ingression between the heating liquid and cleaning and/or cooling medium can be prevented from and in which the economy can be improved in cost as well as in space while ensuring safety.

Vulcanization apparatus for a continuous length of article of rubber,

Growing community of inventors

Fukuoka, Japan

Nobuyoshi Mine