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WhatsApp: +86 18221755073Work Index values obtained for each mixture are shown, from which a deterministic model was proposed de-fined by data regression. The novelty of this research lies in the non-linear model, …
WhatsApp: +86 18221755073A systematic investigation was carried out to predict Bond's work index using simple field measurable properties of rocks. Tests were conducted on Basalt, Slate and …
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WhatsApp: +86 18221755073'Work Index' is the amount of energy required to do this work. It is a measurement of how hard the rock is and an expression of the resistance that a material has to crusher. ... Quartz. 13. Limestone. 16. Gold Ores. The kilowatt-hours per tone (kWh/t) will work out your work index. The number of kittowatts consumed in a hour divided by the ...
WhatsApp: +86 18221755073Bond work index (Wi) can be considered as one of the most important affecting factors in the design of grinding systems which indicates the value of energy (kwh) ... Quartz White marble Nephline Syenite Cement clinker Kaolin Ilmenite Barite 2555 2472 2507 1959 2592 2567 2518 157 144 145 128 160 147 129 15.97 13.10 14.03 9.78 8.92 9.14 4.68 14. ...
WhatsApp: +86 18221755073Bond were: quartz feldspar mica clay minerals. Preprint 16-033. Use of the Bond Work Index to size industrial grinding equipment was widely known. Bond Work Inde Ball Mill - raigres.es ... Abstract The Bond work index, Wi, is defined in a Bond ball mill on the samples of standard size − 3.327 + 0 mm. In practice, it is possible to find ...
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WhatsApp: +86 18221755073It is a well-known fact that the value of the Bond work index (wi) for a given ore varies along with the grinding size. In this study, a variability bysis is carried out with the Bond...
WhatsApp: +86 18221755073Refractive index, density, and ... and anisotropy were conducted on three quartz-mica schists and one felsic mylonite, which are representative of typical metamorphic rocks deformed in the middle crust beneath the southeastern Tibetan plateau. Results show that the schists have Vp anisotropy (AVp) ranging from 16.4% to 25.5% and maximum Vs ...
WhatsApp: +86 18221755073The work index Wi was defined by F. Bond as the specific energy (kWh/ton) required to reduce a particulate material from infinite grain size to 100 microns. The calculation is based on the...
WhatsApp: +86 18221755073'Work Index' is the amount of energy required to do this work. It is a measurement of how hard the rock is and an expression of the resistance that a material has to crusher. Shown in the table below is typical Work Index, reflecting the different …
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WhatsApp: +86 18221755073W Specific energy (work) input, kWh/t. WI Bond's Work Index, the specific energy associated with namely from a 80 = approximately infinity) to a P 80 100 µm. WIo-ACT Actual circuit (Bond) Operating Work Index, kWh/t, determined from measurements taken on the circuit. WISTD and Lab WICOMB The Bond Standard Circuit Work Index
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WhatsApp: +86 18221755073PDF | Quartz mica schist, which is a highly anisotropic metamorphic rock, usually presents a geotechnical challenge in construction projects. ... A review of the aforementioned work. Engineering ...
WhatsApp: +86 18221755073Numerically, the work index is the energy required in kwh/t to reduce a given material from theoretically infinite feed size to 80% passing 100 microns. The work index of a particular …
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WhatsApp: +86 18221755073The work index Wi was defined by F. Bond as the specific energy (kWh/ton) required to reduce a particulate material from infinite grain size to 100 microns. ... study for quartz grinding, usin g ...
WhatsApp: +86 1822175507397 rowsThis Table of Ball Mill Bond Work Index of Minerals is a summary as tested on 'around the world sample'. You can find the SG of each mineral samples on the other table.
WhatsApp: +86 18221755073The answer to this question is that generally no, the size that the index is measured at does not effect the Bond work index value. Bond work index (BW i) is a measure of the hardness of an ore. This is a quality of the rock, which generally does not change over the size ranges encountered in ball milling.
WhatsApp: +86 18221755073Metamorphic zones are identified by: a. index minerals b. index fossils c. index rocks d. index pressure e. none of these a During the metamorphism of a shale to a slate, many of the clay minerals have been transformed into: a. mica and chlorite b. muscovite and kyanite c. biotite and almandite d. none of these e. quartz and staurolite
WhatsApp: +86 18221755073The Bond ball mill work index (Wi BM, or BWi) conducted from a feed size of approximately 2 mm to a product size on the order of 100 µm. The Bond rod mill work index ... but the grindability may be low if the quartz is …
WhatsApp: +86 18221755073The basic work index equation is: W = 10 Wi/√P – 10 Wi/√F(1) where W is the work input required in kilowatt hours per short ton to grind from 80% passing F microns to 80% passing P microns, and Wi is the work index, or the grinding resistance parameter. It represents the energy input required in kilowatt hours to reduce a sh…See more on 911metallurgist
Out of the three generic categories of rocks, metamorphic rocks usually display the highest degree of anisotropy (Ramamurthy, 1993).Quartz mica schist, which is a common type of metamorphic rock, has a widespread distribution in the world, including Scottish Highlands, Norway, Sweden, China, India, Bohemia, Saxony, Brittany, the Alps, Himalayas, and many …
WhatsApp: +86 18221755073Generally Bond work index for mill dimensioning and controlling is measured by grinding a feed material of less than 3.36 ... granodiorite, magnetite, granite, feldspar and quartz samples of Saudi Arabia and found the following correlation of BWI with mechanical properties with correlation coefficient of 0.75, 0.80, 0.81 and 0.90, respectively: ...
WhatsApp: +86 18221755073Sizing a crusher can be done reliably calculated thanks to the Impact/Crushing Work Index and the testwork research done by Fred Chester Bond and his 1952 paper. According to Bond's Third Theory of Comminution, the work/energy input is proportional to the new crack tip length created during particle breakage and equivalent to the work represented by the product …
WhatsApp: +86 18221755073An operating work index (WiO): A measurement of a specific energy consumption and size reduction in an operating plant. 4. A generic work index that represents an intrinsic ore breakage characteristic that is independent of the apparatus used to determine it (Wi). This, more nebulous work index, is mostly of interest to
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WhatsApp: +86 18221755073Work index is the relation between the SEC and the amount of breakage in an ore. The most common form of this relationship is given as Equation 1, and is often referred to as "Bond's …
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