METHOD FOR PRODUCING ANTIMONY TRISULFIDE - NIHON MINING & CONCENTRATING

Title:

METHOD FOR PRODUCING ANTIMONY TRISULFIDE

Document Type and Number:

WIPO Patent Application WO/2014/054112

Kind Code:

A1

Abstract:

A method for producing antimony trisulfide is developed, in which the resultant antimony trisulfide contains impurities, i.e., lead, arsenic and crystalline silica, in a relatively low amount, and by which it becomes possible to produce antimony trisulfide at low cost. An antimony trioxide powder and sulfur are introduced into a reaction vessel, and subsequently the inside of the vessel is heated to cause the reaction of antimony trioxide with sulfur. Antimony trioxide can be produced through a volatile oxidizing refining process. Therefore, antimony trioxide has a small particle diameter and good reactivity, and antimony trioxide containing impurities, e.g., lead, arsenic and crystalline silica, in a small amount and therefore having high purity is readily available. Thus, antimony trisulfide containing impurities in a small amount can be produced at low cost using antimony trioxide having high purity as a raw material.

Inventors:

KITAZONO SATOSHI (JP)
ISHIDA SHOTA (JP)

Application Number:

PCT/JP2012/075451

Publication Date:

April 10, 2014

Filing Date:

October 02, 2012

Export Citation:

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Assignee:

NIHON MINING & CONCENTRATING (JP)
KITAZONO SATOSHI (JP)
ISHIDA SHOTA (JP)

International Classes:

C01G30/00

Foreign References:

CN101786661A	2010-07-28
JPH01203255A	1989-08-16
JPH03237018A	1991-10-22