sag mill work index_Mill (grinding) WikipediaSAG mills are essentially autogenous mills but utilize grinding balls to aid in grinding like in a ball mill. A SAG mill is generally used as a primary or first stage
Get PriceThe industrial dynamic matrix controller commissioned on the AG mill conducive to the finest product size at a given mill feed rate. 2.8 Bond Work Index.. Index. To assist in the determination of the energy requirements of a comminution Ball mill grindability test The test involves a series of laboratory mill grind tests
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Get PriceThe Bond Ball Mill Work Index (BBWi) test is carried out in a standardised ball mill with a pre-defined media and ore charge. The Work Index calculated from the testing can be used in the design and analysis of ball mill circuits. The test requires a minimum
Get PriceJul 30 2020 · A Bond Ball Mill Work Index may also be used in the simulation and optimisation of existing mill(s) and the associated grinding circuit(s). Sample requirements: A minimum of 8 kg of material crushed to nominally minus 10 mm is preferred. JKTech would stage crush the sample to minus 3.35 mm as required for the Bond Ball Mill Work Index test feed.
Get PriceBall Mill Design/Power Calculation. The basic parameters used in ball mill design (power calculations) rod mill or any tumbling mill sizing are; material to be ground characteristics Bond Work Index bulk density specific density desired mill tonnage capacity DTPH operating % solids or pulp density feed size as F80 and maximum ‘chunk size’ product size as P80 and maximum and
Get PriceThe Bond Ball Mill Work Index (BBWi) test is carried out in a standardised ball mill with a pre-defined media and ore charge. The Work Index calculated from the testing can be used in the design and analysis of ball mill circuits. The test requires a minimum of 10kg of sample that has been stage-crushed to passing size of <3.35 mm.
Get PriceTable I shows the Bond ball mill work index obtained for the ore samples as well as the iron and silica content in concentrate and tail after LIMS. The concentrate weight recovery was in the order of 5060. Furthermore it may be observed that the Bond ball mill work indices for
Get PriceClinker grinding test in a laboratory ball mill using clinker burning with pet-coke and coal Edion ArapiRoland Pinguli Jurgen Kola Blerta Juka Index: 10.183x/D393034 ESCI
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Get Price2 modelling the specific grinding energy and ball-mill scaleup ball-mill scale up (bond’s law)data: zbond work index w i zfeed d f and product d size (both 80% cumulative passing) result: the specific grinding energy w mill power draw p = wt where t the mill capacity mill dimensions (from tables or charts)
Get PriceThe ball mill work index laboratory test is conducted by grinding an ore sample prepared to passing 3.36 mm (6 mesh) to product size in the range of 45-150 µm (325-100 mesh) thus determining the ball mill work index (Wi B or BWi). The work index calculations across a narrow size range are conducted using the appropriate laboratory work
Get PriceEnergy requirement work input and grindability of ball mill have been studied by varying different system parameters (viz. particle size density of materials number of balls time of grinding and speed of the mill). Attempt has also been made to correlate the output with these inputs on the basis of regression analysis. Different C programmings were written to compute energy requirement
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Get PriceRod Mill Work Index Table Mineral Processing Metallurgy. Here is a list presented in table form of Rod Mill Work Index as testedpresented by SME handbook of mineral processing NL Weiss Editor NY 1985. petcoke grinding roller mill. mining petroleum coke ball mill meeting price.
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Get PriceReal density: Real (true absolute) volume is defined as the volume excluding closed and open pores. Hence real density is the mass of the coke particle divided by its volume excluding closed and open pores. Real density is usually measured with a pycnometer using kerosene ( Kocaefe et al. 1995 ). 4.
Get PriceBall Mill Wio BWio 8.6 Circuit Wio OWio 14.6 Bond Ball Mill Work Index BWi kWh/t 13.4 Bond Rod Mill Work Index RWi kWh/t 18.1 Table 1. Example of AG/SAG Ball Mill Circuit Wio Calculations [1] [2] ABstrAct Optimum use of power in grinding both in terms of grinding efficiency and use of installed capital can have a large effect on
Get PriceDec 01 2012 · A Retsch ball mill – model MM400 – was used to grind both the MW pretreated and untreated coke samples. The mill consisted of two steel cylinders 3.5 cm in diameter and 6.5 cm in length with a 1 cm in diameter steel ball inside each cylinder that was able to move freely up and down at the desired frequency.Two working frequencies of 5 and 10 Hz at different milling times (t) were
Get PriceHowever petroleum coke was given finer than other fuel in respect to finer size fraction. It provides the Bond Ball Mill Work Index which expresses the resistance of material to ball milling
Get PriceRod-Ball Mill Circuit or Single-Stage Ball Mills or Multi-Stage Ball Mills or HPGr-Ball Mills Circuit F80 19300 m P80 155 m W Total 8.56 kWhtkWht. Calculation Of The Power Draw Of Dry. circuits at 6 different plants were carried out. The ball mills sampled in
Get PricePetroleum coke PC blend with coal is an attractive feedstock for combustion process The present work investigates the grinding characteristics of PC blend with coal in a laboratory ball mill to meet an industrial tube mill conditions Tests were carried out using a laboratory batch ball mill for optimal production of −200 mesh size product
Get Pricehardness petcoke - enerwater.co.za. Hardgrove Grindability IndexHardgrove Grindability Index (short HGI) is a measure for the grindability of coal Grindability is an index therefore it has no unit The smaller the HGI theRead More; Ube Mill Pet Coke Grinding - greenrevolutionorgin
Get PriceRod Mill Work Index Table Mineral Processing Metallurgy. Here is a list presented in table form of Rod Mill Work Index as testedpresented by SME handbook of mineral processing NL Weiss Editor NY 1985. petcoke grinding roller mill. mining petroleum coke ball mill meeting price.
Get PriceThe energy efficiency of ball milling in comminutionEarlier work by Fuerstenau and Kapur on the comminution of quartz in a single-particle roll mill and in a dry ball mill showed the energy efficiency of ball mill comminution to be 22Thus as a mechanical device for producing fine particles the ball mill is reasonably efficient energetically.
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Get PriceJul 31 2014 · Wm = Wi ( 80P 10 - 80F 10 ) (1) where: Wm - is mill specific motor output power (kWh/t) Wi - is the Bond ball mill work index (kWh/t) P80 - is sieve size passing 80% of the mill product (µm) F80 - is sieve size passing 80% of the mill feed (µm) The “efficiency factors” (Rowland 1975) modify equation 1 so that it ers for circuit
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Get Priceon Fred Bond’s Ball Mill Grindability Work Index (BWi) testing methods. After the tests were completed statistical analysis using the Q test p values the F test and the student t test were used
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