Driven by the global wave of new energy, lithium, known as "white oil", has become the core raw material for power batteries and energy storage technology. As a key step in the efficient extraction of lithium from natural resources, lithium ore smelting technology directly affects the sustainable development of the new energy industry. At present, multiple lithium ore smelting processes, represented by lepidolite and spodumene, coexist.
Titanium, hailed as the "Metal of the 21st Century," is renowned for its high strength, lightweight, and corrosion resistance, making it indispensable in aerospace, chemical, and medical industries. Globally, titanium resources are primarily derived from ilmenite and rutile.
As the core process of scheelite selection, flotation method focuses on the efficient separation of scheelite and veinstone minerals. Through the synergistic effect of high temperature environment and sodium silicate, the heated flotation method (i.e. ‘Petrov method’) promotes the selective resolution of the trapper film on the surface of the minerals, so as to realise the preferential flotation of scheelite.
Scheelite generally achieves ideal liberation at particle sizes suitable for flotation, and its flotation performance is superior to that of wolframite. Therefore, the beneficiation process for scheelite predominantly relies on flotation.
The Carbon-in-Leach gold processing plant represents a significant advancement in cyanidation technology by integrating leaching and adsorption processes within the same reactor system. This method is particularly effective for treating sulfide ores, oxide ores, and complex mineral associations, achieving gold recovery rates of 96%-99%.
Gold carbon-in-pulp plant (Carbon-in-Pulp Plant, referred to as CIP) is a modern gold extraction process based on the principle of activated carbon adsorption, which is widely used in the processing of gold-containing ores. Compared with the traditional cyanidation method, the carbon-in-pulp method greatly improves the gold recovery rate by directly adding activated carbon into the pulp to adsorb gold-cyanide complexes
Wormite and scheelite have become the main sources of tungsten resources due to their high mining value. Tungsten, as a rare metal, is widely distributed in various types of rocks and has important industrial application value.
Bentonite is a type of clay rock with montmorillonite as the main mineral component, and the montmorillonite content is usually 85% - 90%. Its unique crystal structure consists of two layers of silicon-oxygen tetrahedrons sandwiched by one layer of aluminum-oxygen octahedron, which gives bentonite many special properties.
In mining operations, proper disposal of tailings is a critical task. Surface disposal of tailings is usually done with the help of various types of dams and dikes to construct reservoirs to store tailings and factory wastewater. There are a variety of dike types to choose from, including single-layer water storage types and elevated dike types such as upstream, downstream, and centerline. Each type has its own unique construction methods, application conditions, advantages and disadvantages.
The chemical bleaching method removes these impurities by converting them into soluble substances through the action of chemical reagents, thereby significantly improving the whiteness of kaolin. Below are the main methods of chemical bleaching and their applications.
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