Bond work index procedure and methodall mill wikipedia ball mill is a type of grinder used to grind and blend materials for use in mineral dressing processes, paints, pyrotechnics, ceramics and selective laser sintering works on the principle of impact and attrition size reduction is done by impact as the balls drop from near the top of the shell.
Ball mill drive motor choiceshe mill used for this parison is a 44meter diameter by 136 meter long ball mill with a 5000 hp drive motor it is designed for approximately 90 per hour this type twopartment mill is a state oftheart shell supported cement finish mill the torque and time requirements of the mill with the ball.
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Bond work index formulaequationee this useful summary table of bond work index by mineralsor any circuit, whether a crushing circuit, a rod mill, or a closed ball mill circuit, the work index always means the equivalent amount of energy to reduce one ton of the ore from a very large size to 100 um.
W is the work index measured in a laboratory ball mill kilowatthours per metric or short ton p 80 is the mill circuit product size in micrometers f 80 is the mill circuit feed size in micrometers rod mill a rotating drum causes friction and attrition between steel rods and ore particl citation needed but note that the term rod mill is.
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201322recirculation load for an attrition ball mill processing limestone with a bond work index of 10 and a feed particle size of x 0 is between 140 to 150he result is smaller hydroclones than for a typical horizontal ball mill system of similar capacityhere are two basic recirculation loop methodologies for an attrition ball mill.
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A typical recirculation load for an attrition ball mill processing limestone with a bond work index of 10 and a more detailed chapter 3 particle technology size reduction free quoteoal mill petformance ement mill is used coal crusher coal milloal crushing and.
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Bond work index tables wi scribdere there are given tables from various sources for the bond work index values of mining materials ores, work index kwht 20 ball mill.
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Kinetic grinding test approach to estimate the ball mill work index stronger ore is subjected to abrasion and attrition events where the media impact could not sufficiently break the stronger.
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Ball mill wikipedia ball mill is a type of grinder used to grind and blend materials for use in mineral dressing processes, paints, pyrotechnics, ceramics and selective laser sintering works on the principle of impact and attrition size reduction is done by impact as the balls drop from near the top of the shell.
For any circuit, whether a crushing circuit, a rod mill, or a closed ball mill circuit, the work index always means the equivalent amount of energy to reduce one ton of the ore from a very large size to 100 umhe sample was received crushed appropriately for the ball mill testow does ball mill work.