The Furukawa Electric Co., Ltd.

Other

Mitsubishi Petrochemical Company Limited

Yoshihisa Asada

Hideaki Nakagawa

Teruo Henmi

Shin-ichi Irie

Kenji Uesugi

Takao Ando

Masahiro Iizuma

Masahiro Maeda

Nobuyuki Yamada

The present invention provides a zero emission type method for effective use permitting economical and effective manufacture of zeolite effectively applicable in various sectors of industry by using silicon-containing waste comprising at least one of exhaust gas treatment sludge mainly comprising SiO discharged from an optical film manufacturing plant, optical fiber refuse and preform refuse, and aluminum-containing waste comprising at least one of aluminum dross discharged from an aluminum-related manufacturing plant, aluminum dust collection ashes, sludge mainly comprising aluminum hydroxide, cleaning waste liquid of aluminum or an alloy thereof, scrap of metal aluminum or an alloy thereof, and alumina scrap.

Manufacturing method of zeolite from waste

An optical cable connecting section in an electric power and optical composite cable which has a rodlike excessive length containing member having linear grooves and curved grooves on the outer periphery thereof and disposed between the ends of both of the optical cables to be connected, further connected in series with the tension members of the optical cables in such a manner that the optical fibers led from the end of both of the optical cables are relatively connected as pairs, whereby the excessive length portions of the optical cables thus connected are contained in the curved grooves of the excessive length containing member and the portions having no excessive length are contained in the linear grooves of the excessive length containing member. Thus, the connecting sections of the optical cables can improve in the outer diameter of the connecting sections of the optical cables so as to increase as large as the occurrence of a defect in its handling to be uniformly finished in the outer diameter of the cable over the entire length.

Optical cable connecting section in electric power and optical composite

There are disclosed a cross-linked polyethylene insulated power cable with improved electric breakdown strength having a conductor covered with a cross-linked polyethylene insulating layer having a density of 0.918 g/cm.sup.3 or more, a crystal thickness of 76 .ANG. or more, and a gel fraction of 60% or more; and a method for manufacturing such a power cable.

Cross-linked polyethylene insulated power cable with improved electric

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Chiba, Japan

Yoshihisa Asada