National Institute of Advanced Industrial Science and Technology

Kabushiki Kaisha Kobe Seiko Sho

Nippon Light Metal Company, Ltd.

Kobe Steel, Ltd.

Takehiro Matsunaga

Shuzo Fujiwara

Kenji Koide

Kiyoshi Asahina

Katsuo Kurose

Ken Okada

Ryusuke Kitamura

Kaoru Sugita

Takashi Toyama

Masaya Ueda

Takuma Hachisu

Koichi Hayashi

Hiromichi Ito

Kenji Tamai

Kaoru Shimada

Hideaki Shimoda

Takashi Gotou

Yo Rene Abe

Yuji Oota

Hideo Shimazu

Mitsuaki Iida

Shiyuu Usuba

Miyako Akiyoshi

Yoshito Gotoh

Satoshi Takeya

Hiroshi Fujihisa

Yukihiro Sugiyama

Tomohide Okada

Kiyoshi Kabushiki Kaisha Kobe Seiko Sho Asahina

Katsuo Kabushiki Kaisha Kobe Seiko Sho Kurose

Kenji Kabushiki Kaisha Kobe Seiko Sho Koide

Kenji Kabushiki Kaisha Kobe Seiko Sho Tamai

A sodium borate, aluminum powder and fluoride powder are mixed together in a hermetic vessel filled with hydrogen gas, and the mixture is reacted at not less than 410° C. and not more than 560° C. to produce sodium borohydride.

Sodium borohydride production method

Provided are sodium hypochlorite pentahydrate crystals capable of long-term storage that have improved stability of sodium hypochlorite pentahydrate, which is effective as an oxidizing 5 agent or bactericide, in the vicinity of normal temperatures, and a method for producing the same. The sodium hypochlorite pentahydrate crystals are such that peaks appear at the locations of the angles of diffraction described in Table 1 of claimover a range of 10&#xb0;&#x2264;2&#x3b8; (angle of diffraction)&#x2264;65&#xb0; as measured by powder X-ray diffraction using a Cuk&#x3b1; radiation source.

Sodium hypochlorite pentahydrate crystals and method for producing same

An aspect of the present invention is a method of processing a waste material that contains mercury or a mercury compound, and chlorine or a mercury chloride, the method including a step of adding a chlorine scavenger to the waste material, and stowing the waste material in a treatment vessel; and a step of subjecting the waste material to a blasting treatment by fitting an explosive to the treatment vessel and detonating the explosive inside a pressure-proof container.

Method of processing waste material

A blast treatment method capable of performing blast treatment of a treatment subject with a simple structure, with high efficiency, and at low cost, while inhibiting scattering of harmful substances or the like to the outside. The method includes: inside disposing an inside explosive for blasting a treatment subject around the treatment subject; disposing an outside explosive having a detonation velocity greater than that of the inside explosive at a position outside the inside explosive; and detonating the outside explosive using an initiation device, and initiating the inside explosive by detonation of the outside explosive, thereby performing blast treatment of the treatment subject by initiation of the inside explosive. The outside explosive disposing includes arranging a cord-like explosive member containing the outside explosive and having a shape extending in one direction so that a detonation propagation velocity in a specific direction of the inside explosive initiated by the outside explosive is greater than a detonation propagation velocity in the specific direction of the inside explosive.

Blast treatment method and blast treatment device

An object of the present invention is to improve durability of a pressure vessel for blasting an article to be treated such as hazardous substance or explosive therein. The pressure vessel, means for achieving the object, has an external vesseland an internal vesselinstalled in the external vessel. The external vesselhas a strength for retaining pressure caused by blasting the article. The internal vesselreceives fragments of the treated articleto protect the external vesselagainst the fragments. The internal vesselpreferably covers almost entire internal surface of the external vessel

Pressure-resistant vessel and blasting facility having the same

A method of blasting hazardous substance or explosive in a pressure vessel is provided to improve efficiency while suppressing enlargement of the pressure vessel. To achieve it, the method includes an installing step of installing two or more articles to be treated at a certain spacing in the pressure vessel, an initial blasting step of blasting one of the articles to be treated, and a following blasting step of blasting the article to be treated next to the previously blasted article to be treated after a particular time from the instant of the previous blast. Each of the articles is blasted sequentially through the initial and following blasting steps.

Multiple blasting treating method

A blasting method of blasting an explosive device at least containing an explosive and a chemical agent in a sealed pressure vessel that prevents soot generation during blasting and improves an efficiency of decomposing the chemical agent. First, a transported chemical bomb (explosive)is placed and sealed in a blasting chamber (pressure vessel)The blasting chamberis then brought into a reduced-pressure or vacuum state by aspiration of the air therein by using a vacuum pumpand oxygen is supplied through an injection portinto the blasting chamberto a pressure of 15 to 30% of atmospheric pressure. The chemical bombis then blasted, as it is ignited by an ignition device not shown in the Figure.

Blasting method by controlling oxygen supply

A blasting method of processing a bomb by forming an explosive layer on an outermost surface of the bomb to be processed having a casing in a particular shape and by exploding the explosive layer, wherein the explosive layer comprises a first explosive layer formed around the outermost surface of the casing and a second explosive layer formed as to surround the first explosive layer, an explosive in the second explosive layer has a higher explosion velocity than an explosive in the first explosive layer, and the second and first explosive layers are exploded at a certain time interval by igniting a particular region of the second explosive layer. The method allows low-cost blasting of bombs, by relaxing the impact of the scattering casing fragments.

Blasting method

Growing community of inventors

Tsukuba, Japan

Takehiro Matsunaga