Testwork: Drop weight test - Revision history

Alex Doll: /* Test Outputs */

2015-07-24T19:32:08Z

Test Outputs

Alex Doll: /* Testwork: Drop Weight Tests */

2015-04-25T19:54:42Z

Testwork: Drop Weight Tests

Alex Doll: /* Sample Requirements */

2012-12-18T02:50:53Z

Sample Requirements

Alex Doll: /* Testwork: Drop Weight Tests */

2012-12-17T23:17:49Z

Testwork: Drop Weight Tests

Alex Doll: /* Sample Requirements */

2012-12-17T22:07:50Z

Sample Requirements

Alex Doll: Created page with "==Testwork: Drop Weight Tests== The JK drop weight testing machine is used to generate data sets for two different comminution models: * a fitted "A" and "b" for the "E_..."

2012-12-17T19:14:08Z

Created page with "==Testwork: Drop Weight Tests== The JK drop weight testing machine is used to generate data sets for two different comminution models: * a fitted "A" and "b" for the "E..."

New page

==Testwork: Drop Weight Tests==
The JK drop weight testing machine is used to generate data sets for two different comminution models:
* a fitted "A" and "b" for the "ECS versus T10" test result, which is used in JK SimMet to generate particle size distributions (ergo, the appearance functions).
* a fitted "drop weight index" (DWI) test result, which is used in the Morrell power model to predict the specific energy consumption of particle breakage for "standard particle size distributions" of a process feed and product streams.

The test is a 'per-specimen' test where individual specimens of prepared rock are hand-picked by the test operator and placed into the apparatus. The size and quantity of the specimens is different in the JK SimMet and Morrell SMC (DWI) procedures. Generally, the DWI procedure requires fewer specimens of smaller sizes, but is much quicker (and less expensive) to operate.

===Sample Requirements===
The drop weight test for use in JK SimMet, referred to here as the "full drop weight test", requires approximately 100 kg of material with a top size of 60-75 mm. When using drill core, this requires whole-diameter PQ core.

The drop weight test for use in the Morrell SMC model requires minimum 8 kg of

===Trademarks===
* JK SimMet and JK DWT are trade marks of the Julius Kruttschnitt Mineral Research Centre, Indooroopilly, Australia. Laboratories performing this test pay a royalty when submitting raw results for interpretation.
* SMC and DWI are trade marks of SMC Testing Pty Ltd, Chapel Hill, Australia. Laboratories performing this test pay a royalty when submitting raw results for interpretation.

@@ Line 19: / Line 19: @@
 ===Test Outputs===
 * The '''"full" JK DWT''' returns a separate value for the fitted parameters '''A''' and '''b''' (which are frequently multiplied together and reported as '''A&times;b'''),
-** A table of ''Appearance values'' for a crusher model are provided.
+** A table of ''Appearance values'' for a crusher model are provided. (not used in SAGMILLING.COM)
 ** A companion tumbling test is conducted that returns a '''ta''' value.
 * The '''SMC test''' returns a Drop-Weight Index '''DWI''' value and several related inferred values.
-** Inferred '''A''', '''b''' (, '''A&times;b''') and '''ta''' are provided for people who intend to use the JK SimMet software.
+** Inferred '''A''', '''b''' (and '''A&times;b''') and '''ta''' are provided for people who intend to use the JK SimMet software.
 ** Derived output values for '''Mia ''' (for SAG milling), '''Mic''' (for crushing) and '''Mih''' (for high-pressure grinding rolls) are provided for doing power-based calculations, such as those in SAGMILLING.COM.
 ===Modelling===

@@ Line 5: / Line 5: @@
 The JK drop weight testing machine is used to generate data sets for two different comminution models:
 * A fitted "A" and "b" for the "E<sub>CS</sub> versus T<sub>10</sub>" test result, which is used in JK SimMet to generate particle size distributions (ergo, the appearance functions).
-* A fitted "drop weight index" (DWI) test result, which is used in the Morrell SMC power model to predict the specific energy consumption of particle breakage for "standard particle size distributions" of a process feed and product streams.
+* A fitted "drop weight index" (DWI and Mia) test result, which is used in the '''Morrell SMC power model''' to predict the specific energy consumption of particle breakage for "standard particle size distributions" of a process feed and product streams.
 The test is a 'per-specimen' test where individual specimens of prepared rock are hand-picked by the test operator and placed into the apparatus.  The size and quantity of the specimens is different in the JK SimMet and Morrell SMC (DWI) procedures.  Generally, the DWI procedure requires fewer specimens of smaller sizes, but is much quicker (and less expensive) to operate.
@@ Line 18: / Line 18: @@
 ===Test Outputs===
-* The "full" JK DWT returns a separate value for the fitted parameters '''A''' and '''b''' (which are frequently multiplied together and reported as '''A&times;b'''),
+* The '''"full" JK DWT''' returns a separate value for the fitted parameters '''A''' and '''b''' (which are frequently multiplied together and reported as '''A&times;b'''),
 ** A table of ''Appearance values'' for a crusher model are provided.
 ** A companion tumbling test is conducted that returns a '''ta''' value.
-* The SMC test returns a Drop-Weight Index '''DWI''' value.
+* The '''SMC test''' returns a Drop-Weight Index '''DWI''' value and several related inferred values.
 ** Inferred '''A''', '''b''' (, '''A&times;b''') and '''ta''' are provided for people who intend to use the JK SimMet software.
 ** Derived output values for '''Mia ''' (for SAG milling), '''Mic''' (for crushing) and '''Mih''' (for high-pressure grinding rolls) are provided for doing power-based calculations, such as those in SAGMILLING.COM.
@@ Line 30: / Line 30: @@
 JK SimMet, which is a population-balance model, uses the '''A''' and '''b''' values to predict the ''t<sub>10</sub>'' generated by a certain breakage energy ''E<sub>CS</sub>''.  This ''t<sub>10</sub>'' is then extended to create an ''appearance matrix'' used to predict the particle size distribution of a breakage event.
-In the Morrell SMC model, the <b>Mia</b> value is used to predict the specific energy consumption of a SAG mill.  When combined with an <b>Mib</b> value (obtained as a modified output of a Bond ball mill work index test), the total specific energy consumption of a grinding circuit can be predicted.
+In the [[Model:Morrell SMC SAG|SAGMILLING.COM version of a Morrell SMC model]], the <b>Mia</b> value is used to predict the specific energy consumption of a SAG mill.  When combined with an <b>Mib</b> value (obtained as a modified output of a [[Testwork: Bond ball mill work index|Bond Bond ball mill work index test]]), the total specific energy consumption of a grinding circuit can be predicted.
 ===Trademarks &amp; Licensing===

@@ Line 12: / Line 12: @@
 The drop weight test for use in JK SimMet, referred to here as the "full drop weight test", requires approximately 100 kg of material with a top size of 75-100 mm.  When using drill core, this requires whole-diameter PQ core.
-The drop weight test for use in the Morrell SMC model requires minimum 8 kg with sized between 25-40 mm (though smaller dimensions can be substituted if the coarser material is not available).
+The drop weight test for use in the Morrell SMC model requires minimum 8 kg with sized between 27-32 mm (though smaller dimensions can be substituted if the coarser material is not available).
 ===Test Inputs===

@@ Line 1: / Line 1: @@
 ==Testwork:  Drop Weight Tests==
 The JK drop weight testing machine is used to generate data sets for two different comminution models:
-* a fitted "A" and "b" for the "E<sub>CS</sub> versus T<sub>10</sub>" test result, which is used in JK SimMet to generate particle size distributions (ergo, the appearance functions).
+* A fitted "A" and "b" for the "E<sub>CS</sub> versus T<sub>10</sub>" test result, which is used in JK SimMet to generate particle size distributions (ergo, the appearance functions).
-* a fitted "drop weight index" (DWI) test result, which is used in the Morrell power model to predict the specific energy consumption of particle breakage for "standard particle size distributions" of a process feed and product streams.
+* A fitted "drop weight index" (DWI) test result, which is used in the Morrell SMC power model to predict the specific energy consumption of particle breakage for "standard particle size distributions" of a process feed and product streams.
 The test is a 'per-specimen' test where individual specimens of prepared rock are hand-picked by the test operator and placed into the apparatus.  The size and quantity of the specimens is different in the JK SimMet and Morrell SMC (DWI) procedures.  Generally, the DWI procedure requires fewer specimens of smaller sizes, but is much quicker (and less expensive) to operate.
@@ Line 11: / Line 14: @@
 The drop weight test for use in the Morrell SMC model requires minimum 8 kg with sized between 25-40 mm (though smaller dimensions can be substituted if the coarser material is not available).
-===Trademarks===
+===Test Inputs===
 * JK SimMet and JK DWT are trade marks of the Julius Kruttschnitt Mineral Research Centre, Indooroopilly, Australia.  Laboratories performing this test pay a royalty when submitting raw results for interpretation.
-* SMC and DWI are trade marks of SMC Testing Pty Ltd, Chapel Hill, Australia.  Laboratories performing this test pay a royalty when submitting raw results for interpretation.
+* SMC Test and DWI are trade marks of SMC Testing Pty Ltd, Chapel Hill, Australia.  Laboratories performing this test pay a royalty when submitting raw results for interpretation.

@@ Line 7: / Line 7: @@
 ===Sample Requirements===
-The drop weight test for use in JK SimMet, referred to here as the "full drop weight test", requires approximately 100 kg of material with a top size of 60-75 mm.  When using drill core, this requires whole-diameter PQ core.
+The drop weight test for use in JK SimMet, referred to here as the "full drop weight test", requires approximately 100 kg of material with a top size of 75-100 mm.  When using drill core, this requires whole-diameter PQ core.
-The drop weight test for use in the Morrell SMC model requires minimum 8 kg of
+The drop weight test for use in the Morrell SMC model requires minimum 8 kg with sized between 25-40 mm (though smaller dimensions can be substituted if the coarser material is not available).
 ===Trademarks===

Testwork: Drop weight test - Revision history

Alex Doll: /* Test Outputs */

Alex Doll: /* Testwork: Drop Weight Tests */

Alex Doll: /* Sample Requirements */

Alex Doll: /* Testwork: Drop Weight Tests */

Alex Doll: /* Sample Requirements */

Alex Doll: Created page with "==Testwork: Drop Weight Tests== The JK drop weight testing machine is used to generate data sets for two different comminution models: * a fitted "A" and "b" for the "E..."

Alex Doll: Created page with "==Testwork: Drop Weight Tests== The JK drop weight testing machine is used to generate data sets for two different comminution models: * a fitted "A" and "b" for the "E_..."