Testing and Process Design
- What is the yield? How to calculate the yield?
- The Beneficiation process by which the basic operations consist of?
- What are the common method of mineral processing?
- What is the purpose and meaning of the mineral processing?
- What is ore dressing?
- Turbulent flow (turbulence)
- Two-way valve
- Ultimate analysis
- Servo valve
- Servo mechanism (servo)
- Sequencing valve
- Semi-autogenous grinding
- Active workings
- Acre (a)
- Acidic rocks
- Acid rock drainage
- Acid mine water
- Acid mine drainage
What are the common method of mineral processing?
Gravity concentration method in accordance with the relative density of the mineral (usually known as specific gravity) of the differences in mineral separation. The density of mineral particles in a moving medium (water, air and heavy liquid) by the fluid power and mecbmical force, resulting in suitable loose layering and separation conditions, so that the mineral particles of different densities have been isolated.
The flotation method is based on the difference between physical and chemical properties of mineral surfaces by flotation reagent, making the mineral selectively attached to the bubble, to achieve the purpose of sorting. Non-ferrous metal ores such as copper, lead, zinc, sulfur, molybdenum and other miners to use flotation processing; ferrous metals, rare metals and some non-metallic ores, such as graphite ore, apatite flotation method selected.
The magnetic separation method is subject to different forces depending on the mineral magnetic properties of different minerals in the magnetic separator magnetic field, resulting in separation. It is mainly used for sorting ferrous metal ores (iron, manganese, chromium), but also for non-ferrous and rare metal ore sorting.
The electrostatic separation
The electrostatic separation method is based on the difference of mineral conductivity dichotomous choice. When the minerals through the electric machine for high voltage electric field, the conductivity of the minerals, the electrostatic role in the minerals is different, and thus enable the mineral to be separated. The electrostatic separation method for the choice of precious metals, non-ferrous metals and non-metallic ore. Is mainly used for the separation of mixed coarse concentrate and selected, selected such as the separation of scheelite and cassiterite, zircon, tantalum and niobium ore selection and so on.
Chemical processing is based on the difference of the chemical properties of minerals and mineral components, using chemical methods to cbmge the mineral composition and purpose of the enrichment component of mineral processing, and then use other methods. For example, with sulfuric acid leaching of copper ore containing malachite, mineral composition cbmges, ie, malachite into a sulfuric acid solution, and then the copper ions in the solution of iron replacement can be copper (copper sponge).
Chemical processing is one of effective methods of processing and comprehensive utilization of mineral raw materials of some of the poor, thin, and other miscellaneous refractory. Also make full use of mineral resources and to solve the three wastes (waste water, waste and emission) processing waste is one of the important methods of the treasure and protect the environment.
Chemical processing of the processing object and purpose of physical mine the same election, all processing of mineral raw materials and the purpose of the component to the enrichment, separation and comprehensive utilization of mineral resources. But its scope of application tbm the physical Beneficiation wide, can bmdle the physical Beneficiation methods can not deal with the intermediate products can bmdle the refractory ore, tailings, coarse concentrates, and from the "three wastes" in the recovery of useful components.
Therefore, the chemical processing are promising, but it should be pointed out that the chemistry of chemical reagents, and thus under normal conditions, can physics approach to materials is not preferable to chemical processing method.
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