Abstract Realizing the existing issues that traditional empirical equations and Bond crushing work index are no longer fit for the reference basis of SABC circuit design and equipment sizing an advanced simulation software JKSimMet was applied in this study to model the SABC comminution circuit of Wushan phase I copper moly concentrator The model was fitted and
The Bond work index is one }f the most useful and interesting parameters used in designing grinding equipment However it must he ohtained under restrained conditions especially in regards to the Bond standard lah mill Bond 1961 "Crushing and grinding calculations " Allis Chalmers Manu
The Bond s Ball Mill Work Index is a measure of the resistance of the material to grinding in a ball Crushing Jaw Crusher; Jaw Crusher with in built Sample Divider With software version Bonds Work Index Ball Mills is a highly exported equipment as it single handedly helps the customer to quickly decide on the required changes in the
Comminution in a mineral processing plant or mill involves a sequence of crushing and grinding processes Prasher 1987 Literature on impact crusher performance in relation to machine configuration and operational conditions by experimental work and mathematical modelling is given by Austin et al 1979 Shi et al 2003 Colback 1966
The most widely known measure of grindability is Bond Work Index which was defined as the resistance of the material to grinding and quantified the specific work input kWh/t required to reduce
It is not recommended to use UCS as a proxy for the Bond crushing work index or vice versa If you insist on doing so there are several potential regression equations above that you may choose
10 mm the crushing work index SWI is applicable; for me dium size particles from 100 mm to 2100 μm — rod milling work index RWI; for finer particles — ball milling work index BWI Table These indexes are readily obtained using the special purpose laboratory equipment Fig 1 Finding the total specific energy consumption
Comminution efficiency can be expressed in three different ways Theoretical Efficiency actual energy consumed in a comminution machine compared to the theoretical energy required to make the size reduction Operating Efficiency compares the operating work index calculated from production comminution machinery operating data to the Bond Work
6 Tavares & da Silveira The Bond work index has also been used in conjunction with empirical relationships to estimate capacity factors of jaw cone and gyratory crushers
Variations in the Bond work index as a function of initial sample size are often less than the random variations expected when performing performance index tests The reason why coarse or fine laboratory samples are not valid for designing performing industrial equipment sizing is that coarse or fine samples are not in accordance with Bond
Bond work index 。。 。
The crushing work index CWi estimated on the basis of the twinpendulum test has been proposed by Fred Bond and accumulates a long track record in predicting the performance of crushing
The 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 Bond work index is a measure of ore resistance to crushing and grinding and is determined using the Bond grindability test Its value constitutes ore characteristic and is used for industrial
An impact pendulum that follows strictly Bond s standard for crushability measurement [5 32 33] has been used which allows calculating the crushing or impact work index The test consists of dropping two pendulum mounted hammers simultaneously each weighing kg against individual particles of size ranging from 75 to 50 mm that are
The Bond work index BWI is a well known method used when selecting comminution equipment to evaluate the grinding efficiency and to calculate the required grinding power Although considered an industry standard Bond did not fully define that procedure and therefore significant discrepancies in test results can sometimes be obtained due to
Variations in the Bond work index as a function of initial sample size are often less than the random variations expected when performing performance index tests The reason why coarse or fine laboratory samples are not valid for designing performing industrial equipment sizing is that coarse or fine samples are not in accordance with Bond
The F Bond Pendulum crusher Carring on with a theme that we ve already touched in the previous publication we will consider the methodology of the F Bond index calculating As you know there are three calculation methods The method selection depends on the crushing/grinding stage the power size and the necessary finished class The crushing
The traditional Bond work index proposed by Bond over 60 years ago is still today a useful tool for characterizing material crushability and grindability in the minerals industry
Grinding media influence the energy consumption and efficiency of the grinding process during the calculation of the Bond Work index BWi a well known method for selecting comminution equipment evaluating milling efficiency and calculating required milling power Traditional grinding tests often choose steel balls as the grinding media but ceramic balls are
The commonly used grindability tests included in the database are the Bond work indices for ball milling rod milling and crushing; the drop weight test results A b A×b DWi Mia Mic Mih and
It is not recommended to use UCS as a proxy for the Bond crushing work index or vice versa If you insist on doing so there are several potential regression equations above that you may choose
In general Bond s work index is used to determine the grinding efficiency and also to calculate the power requirement The process is very time consuming and it requires skilled labor and specialized mill A systematic investigation was carried out to predict Bond s work index using simple field measurable properties of rocks
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