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Started by vshastri
When designing a crusher for a mine which experiences a transition from soft to hard rock ores, how can you ensure the crusher will be able to optimally crush both ores for processing during the LOM production? In addition, what metrics from the roc...
Last replied to by anjanisail
During the design of the Crushing Plant all the factors of the rock which may affect the design of the crusher have to b...
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169
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Started by Dzapasi
We have an HP300 crusher in our operations carrying out tertiary crushing duty where it reduces material of P80 - 32mm to P80 - 16mm.  The ore feed is kimbelite ore which is resulting in a clayish product build up in the crusher discharged chute and...
Last commented on by Dzapasi
Thanks Craig the pointer to the water distribution on the screen really open up some avenues of areas we will need to op...
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Started by New Era
Our crushing circuit contains primary crusher jaw , secondary cone crusher and tertiary cone crusher in which closed circuit with a double deck screen. the ore is quartz vein with average of Bond RWI 17.5khr/t and Bond BWI 16.8 kwhr/t. The chutes ar...
Last replied to by Stewart_fernandez
the selection of material on wear liners
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Started by madineh
Hi, we use two roll crusher as secondary in pharaformaldehyd powder production plant (in closed loop) , but 30% of output material is in flake shape , roll dia :400 mm with : 350 mm input size: 10 mm output size : 2 mm , what can we do to decrease th...
Last replied to by Philip Stewart
Standard problem with roll crushers.  Run roll product through a. small hammer mill.  
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231
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Started by Jeky
I've been reading posts/responses about comparison for static against portable stone crushers and got to know what really we want for our new project, now my question is we need to embark on a road construction, civil works and construction of 1000 l...
Last replied to by David
Hi Jeky, The largest gold miner in the world is China. I assure you they know how to make crushers. You just need to k...
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Started by Paul Morrow
All Metso C-Series Crusher models have a maximum possible setting as well as a minimum allowed setting, and Metso claims it is very important that the user understands why these are important to keep these in mind at all times. The maximum possible ...
Last commented on by lordi
What do you mean on 3/16", P80? What capacity and ore strength?
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Started by Goldman
Hi, I'm just wondering if anyone has any info on how to conduct a survey to calculate recirculation load on a crushing circuit? The circuit consists of a jaw crusher and a secondary and tertiary crusher. Any assistance would be helpful.
Last replied to by lordi
Calculation of rough calculation of closed circuit Qs=Q(1/E + B+/B-), where Qs - Total screen load, tph Q - Fresh lo...
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Started by Stalin
What are the effects on temperature of the trunnion bearing when the high pressure pump is run continuously?
Last replied to by Sugar Watkins
A scrubber & pedestal? You never said anything about that is your original question... http://mclanahan.com/wp-content...
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Started by firebird
Recently part of our linear screen is damaged. Most of the Coarse ones are going to the undersize chute. The formula for screen efficiency is 100-(% of undersize in the coarse product). However since the oversize is going to the undersize, could I de...
Last replied to by firebird
Really appreciate that guys pawl and raghdumhi. Helps a lot.thanks  
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Started by isang phakele
Q. compare a jaw crusher with a gyratory crusher of the same gape I) which one will have higher capacity and explain your answer in detail.
Last replied to by David
Hello Isang and welcome.  Dear Isang, we are not here to do your school assignments. For your own good and professiona...
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Started by ThomasS
Hello: I understand the mantle rotates on a eccentric drive. How does the mainshaft pivot? Thank you,  
Last replied to by David
Hello Thomas, The spider holds the top of the main shaft. The top bushing (spider bushing) is sort of hourglass shape s...
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Started by NAVEEN VARMA B
Dear group members, I would like to know how to up scale the crushers ie,. JAW CRUSHER,CONE CRUSHER, GYRATOR Y CRUSHER, HAMMER MILL,BALL MILLS  etc....
Last replied to by David
Hi, this is much to vague a question. to start, review https://www.911metallurgist.com/blog/how-determine-size-crusher...
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400
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Started by JoseMorais
Hello there,I'm a mining engineering student at Faculdade de Engenharia da Universidade de Porto, in Portugal, and I'm part of a group that is doing a project related to the rehabilitation of a quarry. In order to complete said project, I'm in need ...
Last commented on by JoseMorais
Thank you!
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429
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Started by Sainath Reddy
Cone crusher lubricating system pressure gauge becomes gradually decreasing and cone gets trip what is the reason please can you advice me.
Last commented on by James Boimah
Hi perhaps the cone seal is damage
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Started by Marshal Meru
What volume of the feed bunker HPGR? From practice enough for 1.5-2 minutes of work. What do you think about the bunkers volume?
Last replied to by Bill Rico
The bunker doesn't need a large volume but it has to be large enough to ensure proper function of the HPGR. The bunker h...

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