New Technology for Preparation of High Compacted Density Palladium Powder by Chemical Reduction Method
Received:April 15, 2024   Revised:April 27, 2024   Accepted:May 06, 2024      Published Online:July 09, 2024
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DOI:doi:10.3969/j.issn.1007-7545.2024.08.010
KeyWord:chemical reduction method; hydrazine dihydrochloride; refine; high compacted density palladium powder
                       
AuthorInstitution
CHEN Zhiyu 金川集团上海金属资源有限公司
WANG Deyu 金川集团铜贵有限公司
PAN Congming 金川集团铜贵有限公司
GAO Xiangqian 金川集团铜贵有限公司
FANG Xiao 金川集团铜贵有限公司
LI Li 金川集团铜贵有限公司
LI Rui 金川集团铜贵有限公司
BAI Weidao 金川集团铜贵有限公司
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Abstract:
      The particle size and density of high compacted density palladium powder prepared under different conditions were investigated by using the complex solution in the refining process of platinum group metal palladium as raw material, and the optimal preparation process and technical conditions were selected through experiments. The results show that high compacted density palladium powders with uniform particles and compacted density up to about 3.25 g/cm3 can be prepared by direct reduction of palladium complex solution with hydrazine hydrate to form palladium sponge as crystal seed at pH=8 and further reduction with hydrazine dihydrochloride.
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