Mineral processing typically generates waste streams that generally bear little or no resemblance to the materials that entered the operation. These operations most often destroy the physical structure of the mineral, producing product and waste streams that are not earthen in character. Mineral processing operations generally follow beneficiation and include techniques that often change the chemical composition of the ore or mineral, such as smelting, electrolytic refining, and acid attack or digestion.
Valuable minerals in the ore body is usually locked, extracted using different mining methods. These methods depends on the deposit characteristics and safety, technical, environmental and economic constraints. Such as shape and intensity of rock geology has played a key role in selection methods. Mining units to extract the basic steps of operation of the valuable minerals. They are divided into two categories: rock mining and material handling. The first two basic unit operations: drilling, blasting, and material handling, including loading or excavation and transport (horizontal transport). Due to the complicated history and evolution of the regulation of mineral processing wastes, answering the simple question of which wastes are regulated can be complex. General heterogeneous brittle rock materials, this heterogeneity is a mineral composition, particle size, particle shape, particle strength, porosity and micro-cracks from blasting and other factors.
Rock can be called ore processing in a profit. To extract the mineral from the ore carrying separation operation of the integration of mineral processing or mineral is well known precious metals are required. The purpose is to increase the concentrator, in the way of economically viable and valuable mineral content, so that the metal extraction process then become profitable.dryer machine:http://www.hxjqchina.com/product-list_35.html
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The main operations of a mineral processing plant:
Crushed. Rock crushing (crushed) liberated from the ore matrix (dressing) of valuable minerals, thereby increasing the high reactivity (in Hydrometallurgy) area and facilitate the particle transport between the unit operations. use the impact crusher and grinding ball mill. View of the dry ore mill operation, the main work of mill mud, which means that a certain amount of water must be added to the ore milling circuit entered.
Size separation. The crushing process often produces a wide range of particle size distribution of particles, some products may not provide adequate liberation of the right size, so need to be further crushed. Particles of sufficient size (liberation) by the large spiral separator the size of particles through a classification process to complete. Vibrating screen for coarse particles and fine particle size or mechanical classification is used.
Mineral concentration. This enriched ore (gangue) retained as much as possible (the concentration process) may remove the unwanted precious minerals process most of the species. Froth flotation separation of sulfide is the most commonly used method, which is used for gravity separation of heavy minerals (such as Precious metals, iron oxide, etc.), magnetic and electrostatic industrial minerals and iron oxide separation. In froth flotation, air bubbles into the excitement of the pulp. By adjusting the number of pulp properties (pH, pulp potential (Eh), etc.)