Jx Nippon Mining Metals Corporation

Jx Metals Corporation

Toshifumi Kawamura

Tomonari Goda

Provided is an apparatus for analyzing composition of electronic and electrical device part scraps which can determine a composition of part scraps in the electronic and electrical device part scraps in a short time, a device for processing electronic and electrical device part scraps, and a method for processing electronic and electrical device part scraps using those devices. An apparatus for analyzing a composition of electronic and electrical device part scraps including a classification data storage means for storing a classification data for extracting images of a plurality of component types of electronic and electrical device part scraps from a captured image of electronic and electrical device part scraps composed of the plurality of component types and classifying extracted images into each of the plurality of component types, a classification means for classifying the extracted images into each of the plurality of component types extracted from the captured image of the electronic and electrical device part scraps according to the classification data, and analysis means for analyzing at least one of an area, a number, an average particle size, and weight ratio of each of the plurality of component types classified by the classification means.

Apparatus for analyzing composition of electronic and electrical device part scraps, device for processing electronic and electrical device part scraps, and method for processing electronic and electrical device part scraps

Provided is a novel polyoxometalate and a method for producing the polyoxometalate. The polyoxometalate is represented by the compositional formula: MOin which M is tungsten, molybdenum or vanadium; 4&#x2264;x&#x2264;1000; and 2.5&#x2264;y/x&#x2264;7.

Polyoxometalate and method for producing polyoxometalate

Provided is a method for efficiently separating and recovering tungsten and other valuable(s) from at least one valuable containing tungsten. The present invention relates to a method for recovering at least one valuable containing tungsten, comprising subjecting a raw material mixture comprising at least one valuable containing tungsten to electrolysis using an electrolytic solution containing at least one alcohol amine to dissolve tungsten in the electrolytic solution, electrodeposit a part of the valuable(s) onto a cathode used for the electrolysis and separate at least one valuable other than the valuable(s) electrodeposited onto the cathode as a residue in the electrolytic solution, and then separating and recovering each of the residue and the valuable(s) electrodeposited onto the cathode.

Method for recovering at least one valuable containing tungsten

Provided is a method for efficiently producing tungsten from a raw material mixture comprising at least one valuable containing tungsten. The present invention relates to a method for producing tungsten, comprising the steps of subjecting a raw material mixture comprising at least one valuable containing tungsten to electrolysis using an organic electrolytic solution to dissolve tungsten in the electrolytic solution; and calcining the electrolytic solution containing dissolved tungsten at a temperature of less than 800&#xb0; C. to obtain tungsten.

Method for producing tungsten

Provided is a method for efficiently producing tungsten carbide from a raw material mixture comprising at least one valuable containing tungsten. The present invention relates to a method for producing tungsten carbide, comprising the steps of subjecting a raw material mixture comprising at least one valuable containing tungsten to electrolysis using an organic electrolytic solution to dissolve tungsten in the electrolytic solution; and calcining the electrolytic solution containing dissolved tungsten at a temperature of 800&#xb0; C. or more to obtain tungsten carbide.

Growing community of inventors

Hitachi, Japan

Toshifumi Kawamura