There are widespread nickel resources around the world, but divided principally between nickel sulfide or laterite (oxide) resources. Historically production has been dominated by sulfide ores but future production is increasing shifting to laterite ores. The principal reason for this historically is that sulfide ores are easier to process, through conventional mining, smelting and refining, co...

The separation of rare metals from the ores and commercially available compounds is an important issue due to the need of their high purity in advanced materials and devices. Important examples of two highly important elements that co-exist in the ores are scandium and thorium. Scandium containing ores and consequently also commercially available scandium compounds often contain traces of thori...

The Xiawolong gold deposit, located in the Muping–Rushan metallogenic belt (eastern Jiaodong Peninsula), is a newly discovered deposit that developed late Early Cretaceous as fine-grained granite. Gold mineralization, which mainly occurs middle of fresh granite dikes, consists stockwork-style and disseminated ores. They are characterized by middle-high-temperature mineral assemblages, such moly...

In the south of Far East, a large deposit Sukhoe gold has been identified, where noble metal is in dispersed form, being present form microscopic particles, or entering structure sulfide minerals. It was found out that «invisible» (nano) finding mainly associated with pyrite and arsenopyrite. To develop technology for extracting useful component, completeness convenience opening stone material ...

The roasting of sulphide ores and concentrates is often the first step in the production of metals or chemicals. In many processes, the production of sulphuric acid is viewed as a by-product, while in some plants production is an important economic factor. Regardless of the purpose, a pyrite roasting plant consists of mainly three plant sections: roasting, gas cleaning and sulphuric acid. With ...