Title:
METHOD FOR PREPARING IRON-FERROUS SULFIDE COMPOSITE
Document Type and Number:
WIPO Patent Application WO/2017/075950
Kind Code:
A1
Abstract:
A method for preparing an iron-ferrous sulfide composite, comprising: mixing elemental sulfur powder and iron sulfide powder at a mass ratio of 1 : 5-60 or mixing pyrite powder and micron iron powder at a mass ratio of 1 : 5-60 to obtain a mixed raw material; putting the mixed raw material into a ball mill tank of a ball mill, wherein the ball mill tank is filled with grinding media, and the ball mill tank is in a vacuum environment or inert gas atmosphere; starting the ball mill for grinding at a speed of 400-4000 rpm for 2-30 hours; and separating the grinding media from a product after the grinding, to obtain an iron-ferrous sulfide composite having a particle size of 10 μm or below. This preparation method is simple, has low material costs, and does not use or generate poisonous and harmful dangerous chemicals. The prepared iron-ferrous sulfide composite can efficiently purify chlorine-containing organic pollutants and heavy metals in water, and is particularly suitable for in-situ remediation of polluted underground water.
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Inventors:
HE FENG (CN)
GU YAWEI (CN)
WAN SHUNLI (CN)
GU YAWEI (CN)
WAN SHUNLI (CN)
Application Number:
PCT/CN2016/080692
Publication Date:
May 11, 2017
Filing Date:
April 29, 2016
Export Citation:
Assignee:
UNIV ZHEJIANG TECHNOLOGY (CN)
International Classes:
B22F9/04
Foreign References:
| CN105414554A | 2016-03-23 | |||
| CN102814495B | 2014-09-17 | |||
| US20030138695A1 | 2003-07-24 |
Attorney, Agent or Firm:
TIANZHENG PATENT ATTORNEYS (CN)
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