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  2. Mineral processing - Wikipedia

    en.wikipedia.org/wiki/Mineral_processing

    Mineral processing is the process of separating commercially valuable minerals from their ores in the field of extractive metallurgy. [1] Depending on the processes used in each instance, it is often referred to as ore dressing or ore milling .

  3. NIAflow - Wikipedia

    en.wikipedia.org/wiki/NIAflow

    Approximately 80 different mineral processing machines can be arranged in a flow diagram. All object parameters can be displayed on the flowsheet using an unlimited number of labels. Object parameters are stored in three detailing levels, where the ‘Essential’ level contains data required for calculation. The ‘Extended” level and the ...

  4. Cutoff grade - Wikipedia

    en.wikipedia.org/wiki/Cutoff_grade

    Cutoff grade is the minimum grade required in order for a mineral or metal to be economically mined (or processed). Material found to be above this grade is considered to be ore, while material below this grade is considered to be waste. [1] The cutoff grade can be determined through a variety of methods, each of varying complexity.

  5. Particle-size distribution - Wikipedia

    en.wikipedia.org/wiki/Particle-size_distribution

    It can be measured for any fluid system with no dilution or other sample preparation. This is a big advantage of this method. Calculation of particle size distribution is based on theoretical models that are well verified for up to 50% by volume of dispersed particles on micron and nanometer scales.

  6. Mineral resource estimation - Wikipedia

    en.wikipedia.org/wiki/Mineral_resource_estimation

    A Mineral Reserve is the economically mineable part of a Measured or Indicated Mineral Resource demonstrated by at least a Preliminary Feasibility Study. This Study must include adequate information on mining, processing, metallurgical, economic and other relevant factors that demonstrate, at the time of reporting, that economic extraction can ...

  7. Sieve analysis - Wikipedia

    en.wikipedia.org/wiki/Sieve_analysis

    A sieve analysis (or gradation test) is a practice or procedure used in geology, civil engineering, [1] and chemical engineering [2] to assess the particle size distribution (also called gradation) of a granular material by allowing the material to pass through a series of sieves of progressively smaller mesh size and weighing the amount of material that is stopped by each sieve as a fraction ...

  8. Normative mineralogy - Wikipedia

    en.wikipedia.org/wiki/Normative_mineralogy

    Normative mineralogy is an estimate of the mineralogy of the rock. It usually differs from the visually observable mineralogy, at least as much as the types of mineral species, especially amongst the ferromagnesian minerals and feldspars, where it is possible to have many solid solution series of minerals, or minerals with similar Fe and Mg ratios substituting, especially with water (e.g ...

  9. Comminution - Wikipedia

    en.wikipedia.org/wiki/Comminution

    In industry, it is an important unit operation in mineral processing, ceramics, electronics, and other fields, accomplished with many types of mill. In dentistry, it is the result of mastication of food. In general medicine, it is one of the most traumatic forms of bone fracture.