What is palladium

Palladium is a member of Group VIII platinum group elements in the fifth cycle. Palladium is a silver white transition metal with good ductility and plasticity. It can be forged, calendered and drawn.

1、 Production method

Industrial production can be made from ore by dry process, or by-products produced in the production process of copper and nickel sulphide ore as raw materials and produced by hydrometallurgy. In the wet process, the residual components after extracting nickel and copper are used as raw materials. Aqua regia is added for extraction and filtration. Ammonia and hydrochloric acid are added to the filtrate for reaction to produce ammonium chlorophosphite precipitation. After refining, filtering and reducing ammonium chlorophosphonate with hydrogen, about 99.95% palladium was prepared.

2、 Main sources

It can be separated from natural alloys of platinum metals. Palladium is rare in the earth, so it is difficult to mine and smelt. It belongs to the category of rare precious metal series gold, silver, platinum, palladium, ruthenium and iridium. The content of palladium in the earth's crust is 1 × 10 ^ - 6, and it is often dispersed with other platinum series elements in various minerals of alluvial deposits and placer deposits (such as original platinum ore, nickel copper sulfide copper ore, nickel pyrite, etc.). The independent minerals include hexahedral palladite, palladium platinum ore, lead four palladium ore, antimony palladite, bismuth lead palladium ore, tin palladite, etc., and form natural palladium in free state.

The melting point of palladium is the lowest among platinum group metals.

Palladium is a member of Group VIII platinum group elements in the fifth cycle. Palladium is a silver white transition metal with good ductility and plasticity. It can be forged, calendered and drawn.

1、 Production method

Industrial production can be made from ore by dry process, or by-products produced in the production process of copper and nickel sulphide ore as raw materials and produced by hydrometallurgy. In the wet process, the residual components after extracting nickel and copper are used as raw materials. Aqua regia is added for extraction and filtration. Ammonia and hydrochloric acid are added to the filtrate for reaction to produce ammonium chlorophosphite precipitation. After refining, filtering and reducing ammonium chlorophosphonate with hydrogen, about 99.95% palladium was prepared.

2、 Main sources

It can be separated from natural alloys of platinum metals. Palladium is rare in the earth, so it is difficult to mine and smelt. It belongs to the category of rare precious metal series gold, silver, platinum, palladium, ruthenium and iridium. The content of palladium in the earth's crust is 1 × 10 ^ - 6, and it is often dispersed with other platinum series elements in various minerals of alluvial deposits and placer deposits (such as original platinum ore, nickel copper sulfide copper ore, nickel pyrite, etc.). The independent minerals include hexahedral palladite, palladium platinum ore, lead four palladium ore, antimony palladite, bismuth lead palladium ore, tin palladite, etc., and form natural palladium in free state.

The melting point of palladium is the lowest among platinum group metals.