Title:
METHOD FOR PREPARING A TRACE ELEMENT ADDITIVE BASIC ZINC CHLORIDE
Document Type and Number:
WIPO Patent Application WO/2007/137460
Kind Code:
A1
Abstract:
A method for preparing basic zinc chloride, a trace element additive, comprises
1) reacting zinc oxide with hydrochloric acid, wherein the mole ratio of zinc
oxide to hydrochloric acid is 5:2, a certain amount of hydrochloric acid is previously
diluted in 5~10 fold reaction water, then zinc oxide is added thereto, basic zinc
chloride is produced by reacting for 1~3 hours under normal pressure condition
at a temperature of 55~95 and pH of 6~8, a reaction liquid after centrifugal separation
can be used as mother liquor to be recycled in next reaction, the reaction is as
follows: 2HCl+5ZnO+4H2O=Zn5Cl2(OH)8·H2O;
2) water washing, centrifugal separating; 3) oven drying, pulverizing, and
packing.
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Inventors:
HUANG YIQIANG (CN)
Application Number:
PCT/CN2006/001710
Publication Date:
December 06, 2007
Filing Date:
July 17, 2006
Export Citation:
Assignee:
HUANG YIQIANG (CN)
International Classes:
C01G9/04; A23K1/175
Foreign References:
| CN1569643A | 2005-01-26 | |||
| CN1586271A | 2005-03-02 | |||
| CN1568746A | 2005-01-26 | |||
| GB1485762A | 1977-09-14 | |||
| DE2235379A1 | 1973-03-08 | |||
| JPH04147927A | 1992-05-21 |
Attorney, Agent or Firm:
HUNAN ZHAOHONG PATENT LAW OFFICE (2701 Shuntian Building, No.185, Middle Furong Roa, Changsha Hunan 1, CN)
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