The beneficiation efficiency is a comprehensive indicator indicating the effectiveness of the beneficiation process. When there is no selection, its value is zero. When the best ideal sorting effect is achieved, its value is 100%. There are two kinds of calculation formulas for the more commonly used beneficiation efficiency (E), one is: The other is: In the above two formulas, ε is the ore recovery rate; γ is the concentrate yield; α is the ore yield; β is the concentrate grade; θ is the tailing grade; and β is the percentage of the useful components in the pure mineral of the target mineral. .
JIS" Stands for Japanese Industrial Standard and are published by the Japanese Standards Association (JSA) which is the equivalent of ANSI in the United States. They are created and updated by the Committee of the Japanese Industrial Standards (JISC). Like JSA to ANSI, the JISC is similar to the American Society of Mechanical Engineers (ASME).
Japan Industrial Standard is yet another option for metric sizes. Provided in JIS5K, JIS10K, JIS15K, and JISK20K pressure classes, we can offer Slip On, Blind, and Weld Neck varieties in Raised Face or Flat Face configurations. These are typically made of 316/L or A105, but as usual, all alloys are available!
Much like DIN / metric flanges, the JIS Flange specification offers a slightly wider variety of slip weld configurations for the purposes of space limitations and suitability for existing pipeline equipment. For instance, a customer can request a slip on with or without a hub as standard, or even a ring type flange, and all of this within the same B2220 specification.
JIS flanges are commonly found in exported pressure equipment and pipe assemblies from Japan. Many large ships and sea vessels which travel through international waters and service the Pacific rim will utilize equipment made to this standard, as parts and servicing for this specification are widely available.
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The first type applies to the rough selection and pre-selection of low-grade ore with ore grade and concentrate grade and low rich ore ratio. The second type is suitable for low grade ore concentrate grade and high non-ferrous metals and rare metals ore sorting, but also for sorting gold ore. For iron , manganese , chromium and other ores with high ore grades and low rich ore ratios, both formulas can be applied.