Title:
DEVICE AND METHOD FOR DISTILLING MERCURY FROM WASTE FLUORESCENT POWDER
Document Type and Number:
WIPO Patent Application WO/2010/026712
Kind Code:
A1
Abstract:
Mercury, which is toxic, is recovered at a low temperature in a short time from a waste fluorescent powder contained in a discarded fluorescent lamp, thereby remarkably reducing power consumption. A fluorescent powder is stirred in a mixer kiln or rotary kiln to accelerate mercury vaporization. The fluorescent powder is held at a temperature of 200-330ºC for 0.3-3 hours to vaporize the mercury or held at a temperature of 550-650ºC for 0.2-2 hours to vaporize the mercury. The mercury vapor is condensed in a cooler to recover the mercury.
Inventors:
TSUDA SHINJI (JP)
Application Number:
PCT/JP2009/004081
Publication Date:
March 11, 2010
Filing Date:
August 25, 2009
Export Citation:
Assignee:
SAFETY LAND CORP (JP)
TSUDA SHINJI (JP)
TSUDA SHINJI (JP)
International Classes:
B09B3/00; C22B7/00; C22B9/02; C22B43/00; H01J9/50
Foreign References:
| JP2005066534A | 2005-03-17 | |||
| JP2003010829A | 2003-01-14 | |||
| JP2005349395A | 2005-12-22 |
Attorney, Agent or Firm:
SATO, MASARU (JP)
Masaru Sato (JP)
Masaru Sato (JP)
Download PDF:
Previous Patent: PLATINUM COMPLEX AND MEDICAL COMPOUND CONTAINING SAME
Next Patent: ELECTRIC CONNECTOR
Next Patent: ELECTRIC CONNECTOR