Template:EssbmEquation - Revision history

Alex Doll at 21:40, 2 December 2012

2012-12-02T21:40:13Z

← Older revision		Revision as of 21:40, 2 December 2012
Line 17:		Line 17:

	<math> E_{ssbm}=</noinclude>		<math> E_{ssbm}=</noinclude>
	{{BondWiEquation\|Wi=Wi_{C}\|F80=F_{80}\|P80=9400 }} + {{BondWiEquation\|Wi=Wi_{RM}\|F80=9400\|P80=2100 }}\times EF_4^{RM} + {{BondWiEquation\|Wi=Wi_{BM}\|F80=2100\|P80=P_{80} }} \times EF_4^{BM} \times EF_5</noinclude></math>		{{BondWiEquation\|Wi=Wi_{C}\|F80=F_{80}\|P80=9400 }} + {{BondWiEquation\|Wi=Wi_{RM}\|F80=9400\|P80=2100 }}\times EF_4^{RM} + {{BondWiEquation\|Wi=Wi_{BM}\|F80=2100\|P80=P_{80} }} \times EF_4^{BM} \times EF_5<noinclude></math>

	See list of pages that use this formula: {{Special:WhatLinksHere/Template:EssbmEquation}}		See list of pages that use this formula: {{Special:WhatLinksHere/Template:EssbmEquation}}

Alex Doll at 21:39, 2 December 2012

2012-12-02T21:39:43Z

← Older revision		Revision as of 21:39, 2 December 2012
Line 1:		Line 1:
⚫	[[category:Formula]]
	<noinclude>		<noinclude>
		⚫	[[category:Formula]]
	==Single-stage Ball Mill Specific Energy Equation==		==Single-stage Ball Mill Specific Energy Equation==
	This is a basic equation of the family of Bond/Barratt calculations. It describes specific energy requirement of a ''most efficient'' comminution circuit consisting of a multi-stage crushing plant followed by single-stage ball milling. The conventional form of a single-stage ball mill equation requires Bond rod mill work index testing (see [[Bibliography:_Specific_energy_consumption_models\|Rowland, 2006]] for a detailed explanation) to account for the ore hardness in the size range of 10 mm down to about 2 mm.		This is a basic equation of the family of Bond/Barratt calculations. It describes specific energy requirement of a ''most efficient'' comminution circuit consisting of a multi-stage crushing plant followed by single-stage ball milling. The conventional form of a single-stage ball mill equation requires Bond rod mill work index testing (see [[Bibliography:_Specific_energy_consumption_models\|Rowland, 2006]] for a detailed explanation) to account for the ore hardness in the size range of 10 mm down to about 2 mm.

Alex Doll at 21:39, 2 December 2012

2012-12-02T21:39:22Z

← Older revision		Revision as of 21:39, 2 December 2012
Line 1:		Line 1:
	[[category:Formula]]		[[category:Formula]]
			<noinclude>
	==Single-stage Ball Mill Specific Energy Equation==		==Single-stage Ball Mill Specific Energy Equation==
	This is a basic equation of the family of Bond/Barratt calculations. It describes specific energy requirement of a ''most efficient'' comminution circuit consisting of a multi-stage crushing plant followed by single-stage ball milling. The conventional form of a single-stage ball mill equation requires Bond rod mill work index testing (see [[Bibliography:_Specific_energy_consumption_models\|Rowland, 2006]] for a detailed explanation) to account for the ore hardness in the size range of 10 mm down to about 2 mm.		This is a basic equation of the family of Bond/Barratt calculations. It describes specific energy requirement of a ''most efficient'' comminution circuit consisting of a multi-stage crushing plant followed by single-stage ball milling. The conventional form of a single-stage ball mill equation requires Bond rod mill work index testing (see [[Bibliography:_Specific_energy_consumption_models\|Rowland, 2006]] for a detailed explanation) to account for the ore hardness in the size range of 10 mm down to about 2 mm.

Alex Doll: Created page with "category:Formula ==Single-stage Ball Mill Specific Energy Equation== This is a basic equation of the family of Bond/Barratt calculations. It describes specific energy req..."

2012-12-02T21:38:22Z

Created page with "category:Formula ==Single-stage Ball Mill Specific Energy Equation== This is a basic equation of the family of Bond/Barratt calculations. It describes specific energy req..."

New page

[[category:Formula]]
==Single-stage Ball Mill Specific Energy Equation==
This is a basic equation of the family of Bond/Barratt calculations. It describes specific energy requirement of a ''most efficient'' comminution circuit consisting of a multi-stage crushing plant followed by single-stage ball milling. The conventional form of a single-stage ball mill equation requires Bond rod mill work index testing (see [[Bibliography:_Specific_energy_consumption_models|Rowland, 2006]] for a detailed explanation) to account for the ore hardness in the size range of 10 mm down to about 2 mm.

''Essbm'' as a function of feed size ''F80'', transfer size ''T80'' and the work index values at three different sizes:
* ''WiC'': the Bond low-energy impact crushing work index, covers 20 mm to 100 mm size range.
* ''WiRM'': the Bond rod mill work index, covers 2 mm to 10 mm size range.
* ''WiBM'': the Bond ball mill work index, less than 2 mm size range.
There are a series of calibration parameters that correspond to the size ranges listed above. It is useful to think of this model as a hypothetical 3-stage crushing — rod mill — ball mill circuit with a calibration adjustment (1.25) for SAG milling.
* ''PC'' is the hypothetical tertiary crusher product size (default=9400 µm)
* ''PR'' is the hypothetical rod mill product size (default=2100 µm)
Three Rowland Efficiency Factor adjustments are required:
* ''EF4RM'' is the oversize feed factor for rod milling, and is a function of the hypothetical crusher product size or the larger of work index for crushing and work index for rod milling.
* ''EF4BM'' is the oversize feed factor for ball milling, and is a function of the hypothetical rod mill product size and the work index for rod milling.

<math> E_{ssbm}=</noinclude>
{{BondWiEquation|Wi=Wi_{C}|F80=F_{80}|P80=9400 }} + {{BondWiEquation|Wi=Wi_{RM}|F80=9400|P80=2100 }}\times EF_4^{RM} + {{BondWiEquation|Wi=Wi_{BM}|F80=2100|P80=P_{80} }} \times EF_4^{BM} \times EF_5</noinclude></math>

See list of pages that use this formula: {{Special:WhatLinksHere/Template:EssbmEquation}}
</noinclude>