Copper oxide ore has the following characteristics: 1The structure is more complicated, the particle size of the impregnation is finer, it is not easy to dissociate, it is generally brittle, and it is easy to be muddy during fine grinding; 2The mineral composition is very complicated, and the same mineral deposit contains many kinds of oxidized minerals of the same metal. The difference in floatability is very large; 3 often contains a large amount of slime and soluble salts; 4 the oxidized ore properties of different deposits vary greatly, and even the oxidation degree and ore properties of different sections in the same deposit vary greatly.
Common copper oxide ore classification mainly includes malachite (CuCO3·Cu(OH)2), containing 57.4% copper, density 4g/cm3, hardness 4); azurite (azurite, 2CUCO3·Cu(OH)2), 55.2% copper, density 4g/cm3, hardness 4); chrysocolla (CuSiO3·2H2O, 36.2% copper, density 2-2.2g/cm3, hardness 2-4); cuprite (Cu2O, copper 88.8) %, density 5.8-6.2g/cm3, hardness 3.5-4) four categories.
According to these characteristics of copper oxide ore, the scientific research and production personnel of the copper oxide industry have produced various types of copper oxide after scientific research and tackling difficulties, satisfying the industries of ceramics, glass, enamel, battery, petroleum, chemical and other industries. development of.
The impurity components mainly controlled by the chemical composition of copper oxide are initially determined to be six components of hydrochloric acid insoluble matter, chloride (Cl), sulfur compound (SO4), iron (Fe), total nitrogen (N), and water-soluble matter. Due to the different impurity components and content in China’s copper oxide raw materials, the impurity removal effect is also different. The copper oxide produced by various manufacturers of copper oxide has different main components and impurities, but its downstream use industry (such as electroplating and oil)柒, printing and dyeing, fireworks, etc.) have specific requirements for their quality and magazine control.
The quality grade of copper oxide in China is currently divided into three grades. The main component is not less than 99%, and the main component is not less than 98.5%, and the main component is not less than 98%.