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6
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264
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Started by alitorabi1369
Hello good timeI am the hpgr operator of a pelletizing plant. Thank you for answering some of my questions One of the major problems in HPGR is the concentration of the concentrate on the rollers. What do you think is the best solution to eliminate...
Hello good timeI am the hpgr operator of a pelletizing plant. Thank you for answering some of my questions One of the major problems in HPGR is the concentration of the concentrate on the rollers. What do you think is the best solution to eliminate...
1
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112
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Started by pandamanishankar
I am working on budgeting the costs for an copper processing plant and need to estimate potential power consumption of jaw crusher? I have work index, F80 and P80 of the ore. Any guidance is really appreciated?
I am working on budgeting the costs for an copper processing plant and need to estimate potential power consumption of jaw crusher? I have work index, F80 and P80 of the ore. Any guidance is really appreciated?
Last replied to by Alex Doll
The specific energy consumption at the motor input can be predicted using Bond's equation: E = 10 × CWi × (P80–½ - F80–½) where CWi is your work index, F80 is the 80% passing size of the fee...
The specific energy consumption at the motor input can be predicted using Bond's equation: E = 10 × CWi × (P80–½ - F80–½) where CWi is your work index, F80 is the 80% passing size of the fee...
2
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122
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Started by shayne
Am doing an internship at a mine with a comminution plant, how can I practically apply the laws of comminution to predict energy consumption on a 3 stamp mill .
Am doing an internship at a mine with a comminution plant, how can I practically apply the laws of comminution to predict energy consumption on a 3 stamp mill .
2
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392
VIEWS
Started by balan@ce
Hello, The shaft in question is very similar to the Metso GP100S and the shaft has broken as in the attached picture. The vitals were good and the crusher was beginning to give some odd sounds before the operator found that the shaft was broken. Any...
Hello, The shaft in question is very similar to the Metso GP100S and the shaft has broken as in the attached picture. The vitals were good and the crusher was beginning to give some odd sounds before the operator found that the shaft was broken. Any...
Last replied to by
1. The structure design is unreasonable. If the interference between the main shaft and the moving cone is too large, there is no unloading groove, and the transition fillet is too small, the main sha...
1. The structure design is unreasonable. If the interference between the main shaft and the moving cone is too large, there is no unloading groove, and the transition fillet is too small, the main sha...
1
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343
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Started by LordPage
Please tell me if you know the year, make and manufacturer of this. Ball Mill located in Creede, Colorado USA. This Ball Mill was driven by a Steam Engine (missing). Do you know what Steam Engine would have been used to drive this Ball Mill?Many th...
Please tell me if you know the year, make and manufacturer of this. Ball Mill located in Creede, Colorado USA. This Ball Mill was driven by a Steam Engine (missing). Do you know what Steam Engine would have been used to drive this Ball Mill?Many th...
Last replied to by David
Hi, no idea as to make or year of this antique. Best I could do is if you gave me the mill's dimensions, I could tell you the Horse Power needed to run it. In any case, where would you get a steam en...
Hi, no idea as to make or year of this antique. Best I could do is if you gave me the mill's dimensions, I could tell you the Horse Power needed to run it. In any case, where would you get a steam en...
2
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692
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Started by Nikita Gupta
We are using SAG and ball mills for grinding zinc lead ore. I want to know about the possibility of replacing the same with High Pressure Grinding Rolls (HPGR)s. Would the replacement require any changes in the plant design. What would be the feasibi...
We are using SAG and ball mills for grinding zinc lead ore. I want to know about the possibility of replacing the same with High Pressure Grinding Rolls (HPGR)s. Would the replacement require any changes in the plant design. What would be the feasibi...
Last replied to by Peter Murphy
Depends on the application and ore characteristics. Sizing and selection of appropriate equipment for throughput and recirculation loads to be considered. Full evaluation of project aims or objective...
Depends on the application and ore characteristics. Sizing and selection of appropriate equipment for throughput and recirculation loads to be considered. Full evaluation of project aims or objective...
2
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853
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Started by Dachmann
Hi, I am new to the field of mining. Recently I looked into the process of liberation and concentration. Many papers suggest that HPGR and Stirred Mills are a better alternative to SAG and Ball mills in terms of energy efficiency and mineral liberat...
Hi, I am new to the field of mining. Recently I looked into the process of liberation and concentration. Many papers suggest that HPGR and Stirred Mills are a better alternative to SAG and Ball mills in terms of energy efficiency and mineral liberat...
Last commented on by Peter Murphy
Yes agreed, however depends on the application and ore characteristics. Note, HPGR is a crusher used to crush ore, not to mill ore. Therefore HPGR are part of the crushing plant and incorporated only...
Yes agreed, however depends on the application and ore characteristics. Note, HPGR is a crusher used to crush ore, not to mill ore. Therefore HPGR are part of the crushing plant and incorporated only...
2
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1095
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Started by Nikita Gupta
I would like to understand why do companies use SAG mills instead of Rod mills for grinding these days? Apart from the alleviation of need for secondary and tertiary crushers, is there any other reason for inclination towards the installation of SAG ...
I would like to understand why do companies use SAG mills instead of Rod mills for grinding these days? Apart from the alleviation of need for secondary and tertiary crushers, is there any other reason for inclination towards the installation of SAG ...
Last commented on by Peter Murphy
Surely its got to do with the feed size and product reduction size required? SAG mills are used predominantly with feed material with a larger max lump sizes (from primary crushing plant typically i...
Surely its got to do with the feed size and product reduction size required? SAG mills are used predominantly with feed material with a larger max lump sizes (from primary crushing plant typically i...
5
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964
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Started by redcastle
I have a small gold project that I am looking at conducting a heap leach trial of around 5,000 tons, I'm looking at the most cost effective way to do the crushing with regards to mobile plant hire as I think outright purchase is unsuitable at this st...
I have a small gold project that I am looking at conducting a heap leach trial of around 5,000 tons, I'm looking at the most cost effective way to do the crushing with regards to mobile plant hire as I think outright purchase is unsuitable at this st...
Last commented on by SmartDog
All clays do not expand on wetting, so it is important to determine the type of clay involved. And those clays that do expand do it upon wetting, whether it is a cyanide solution or just regular wate...
All clays do not expand on wetting, so it is important to determine the type of clay involved. And those clays that do expand do it upon wetting, whether it is a cyanide solution or just regular wate...
2
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453
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Started by BrantT
Hi. I'm re-configuring a circuit and i need to install a DSM screen prior to a Knelson though i am not sure how to size it? Are there any rule of thumbs or models out there to determine the size and angle of the DSM based on incoming flowrate, % ...
Hi. I'm re-configuring a circuit and i need to install a DSM screen prior to a Knelson though i am not sure how to size it? Are there any rule of thumbs or models out there to determine the size and angle of the DSM based on incoming flowrate, % ...
Last commented on by SmartDog
I also do consulting, or some say insulting. Either works if I get paid.
I also do consulting, or some say insulting. Either works if I get paid.
1
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390
VIEWS
Started by Eder Figueiredo
Dear Friends, I working on a solution for repairing the spider tapered internal bore of our 60” x 89” primary gyratory crusher , as it has loosed its fit interference due excessive wear and can not hold the spider bushing. The results are freque...
Dear Friends, I working on a solution for repairing the spider tapered internal bore of our 60” x 89” primary gyratory crusher , as it has loosed its fit interference due excessive wear and can not hold the spider bushing. The results are freque...
Last commented on by Eder Figueiredo
Thanks my friend. I really appreciate your comments.
Thanks my friend. I really appreciate your comments.
3
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467
VIEWS
Started by Mark Pulley
Hi,our project is a pilot plant for a Detrital Ore concentrator pilot plant. Feed 600 metric TPH Max size 12mm Screen size 1mm After the screen, the +1mm -12mm material goes through a cylclone and is then screened again.my query is... Can the sc...
Hi,our project is a pilot plant for a Detrital Ore concentrator pilot plant. Feed 600 metric TPH Max size 12mm Screen size 1mm After the screen, the +1mm -12mm material goes through a cylclone and is then screened again.my query is... Can the sc...
Last commented on by SmartDog
What kind of details are you looking for? Trommels. scrubbers, or what?
What kind of details are you looking for? Trommels. scrubbers, or what?
1
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440
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Started by Jorge Quintanilla
Hello Everyone.i am envolving in a new expansion project en Bolivia. There was a discussion about foundation of crusher equipments, traditionally We use a concrete foundations. But i worked in one plant with steel foundation and we had a big vibratio...
Hello Everyone.i am envolving in a new expansion project en Bolivia. There was a discussion about foundation of crusher equipments, traditionally We use a concrete foundations. But i worked in one plant with steel foundation and we had a big vibratio...
Last commented on by Jorge Quintanilla
I really appreciate the information, it was very helpful
I really appreciate the information, it was very helpful
4
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658
VIEWS
Started by Reactor
We are looking for expertise in the best grade of steel to use for the internals of a pump to transport a slurry with the following characteristics: Particle size is typically 100 mesh / 150 microns Mohs hardness between 3.5 to 4 Solids content ...
We are looking for expertise in the best grade of steel to use for the internals of a pump to transport a slurry with the following characteristics: Particle size is typically 100 mesh / 150 microns Mohs hardness between 3.5 to 4 Solids content ...
2
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1105
VIEWS
Started by Sarah
Hello, I have a question about coal crusher. Why do we choose impact and roll crusher on coal? Why can't we choose cone crusher? Please help
Hello, I have a question about coal crusher. Why do we choose impact and roll crusher on coal? Why can't we choose cone crusher? Please help
Last replied to by AshKot1
So, I believe that the sizing and specification for any metallurgical crusher is based on simple drop test of spherical object on representative size of sample, like x grams of sample. And then the h...
So, I believe that the sizing and specification for any metallurgical crusher is based on simple drop test of spherical object on representative size of sample, like x grams of sample. And then the h...
3
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1068
VIEWS
Started by mhasanmtqn
Hello, i want to ask about trommel screen, i had a project to design a trommel screen, but i so confused about the principal to make a trommel screen design, i dont find a principal on internet, if anyone have a book/pdf about that, please share the ...
Hello, i want to ask about trommel screen, i had a project to design a trommel screen, but i so confused about the principal to make a trommel screen design, i dont find a principal on internet, if anyone have a book/pdf about that, please share the ...
2
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952
VIEWS
Started by KWENYU
what are the effects of feeding a jaw crusher with material that contains too much fines?
what are the effects of feeding a jaw crusher with material that contains too much fines?
Last replied to by
When the feed particle size is too large to cause serious damage to the equipment, whether soft or medium hardness, it will cause different damage to the equipment. Therefore, the feed particle size i...
When the feed particle size is too large to cause serious damage to the equipment, whether soft or medium hardness, it will cause different damage to the equipment. Therefore, the feed particle size i...
1
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644
VIEWS
Started by PMD
Hello everyone, I'm currently preparing for a repair job on an old Allis Chalmers crusher from the 50's of which I have no real information on. I've included a photo of the wooden boards I refer to. Replacing parts is all well and good, we have tho...
Hello everyone, I'm currently preparing for a repair job on an old Allis Chalmers crusher from the 50's of which I have no real information on. I've included a photo of the wooden boards I refer to. Replacing parts is all well and good, we have tho...
Last replied to by SmartDog
In all probability they are a combination of shim and vibration isolators. If you decide to remove them you will probably need to jack up the crusher and put large shims under it. You will also ne...
In all probability they are a combination of shim and vibration isolators. If you decide to remove them you will probably need to jack up the crusher and put large shims under it. You will also ne...
1
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415
VIEWS
Started by Chromst
Hi all,Is it possible to change the closed side setting of a DDC sizer whilst it is operating? Are the roller and breaker bar positions fixed?
Hi all,Is it possible to change the closed side setting of a DDC sizer whilst it is operating? Are the roller and breaker bar positions fixed?
Last replied to by SmartDog
It is never a good idea to try and adjust any equipment while it is operating. This can cause major failures and also safety issues. You should always have the equipment shut down cleaned out and ...
It is never a good idea to try and adjust any equipment while it is operating. This can cause major failures and also safety issues. You should always have the equipment shut down cleaned out and ...
1
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671
VIEWS
Started by kwmcb
Greetings, I'm researching sand mining in Morgan County, WV, USA. In the pre-1930 pulverizing plant I saw the piece of equipment in the attached photo. Can anyone identify the device to aid me in my research. Thanks, Kent
Greetings, I'm researching sand mining in Morgan County, WV, USA. In the pre-1930 pulverizing plant I saw the piece of equipment in the attached photo. Can anyone identify the device to aid me in my research. Thanks, Kent
Last replied to by SmartDog
Probably a horizontal hammer mill from the looks.
Probably a horizontal hammer mill from the looks.
1
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728
VIEWS
Started by MSKabir
I am new in the field of mining and extractive metallurgy. I am looking into calculating/measuring total media wear inside semi-autogenous mills. From reading research papers, I came to know that primarily three wear mechanisms are in play namely: (a...
I am new in the field of mining and extractive metallurgy. I am looking into calculating/measuring total media wear inside semi-autogenous mills. From reading research papers, I came to know that primarily three wear mechanisms are in play namely: (a...
1
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1011
VIEWS
Started by RIfkhan
Hi I am working in a quartz processing plant. We have a VSI and after the sieve the output is with 1-10mm -50% and
Hi I am working in a quartz processing plant. We have a VSI and after the sieve the output is with 1-10mm -50% and
2
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805
VIEWS
Started by BillXiao
Hello Friends there, To maximize the MP 1000 power draw for the tertiary crusher circuit, we try to look at the feeder speed and cavity level to control the power draw. Accurate cavity level measurement is critical for choke feeding the crusher. at ...
Hello Friends there, To maximize the MP 1000 power draw for the tertiary crusher circuit, we try to look at the feeder speed and cavity level to control the power draw. Accurate cavity level measurement is critical for choke feeding the crusher. at ...
0
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595
VIEWS
Started by Chapman Quarry
Hello I am looking to find the eccentric speed + stroke of the Symons 3ft, 4 1/4ft, 6ft and 7ftXD cones for a comparison for a customer against the newer style cone crushers. Would anyone have this information in old technical sheets? Thanks Rodg...
Hello I am looking to find the eccentric speed + stroke of the Symons 3ft, 4 1/4ft, 6ft and 7ftXD cones for a comparison for a customer against the newer style cone crushers. Would anyone have this information in old technical sheets? Thanks Rodg...
5
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1734
VIEWS
Started by HotelBravo
HelloI am helping a alluvial mine in South America with their transformation to mercury free mining. They have an input of 208t/h of relatively fine particles (-0.25 inch particles make 55% of the total initial weight, -10 Mesh [2mm] particle...
HelloI am helping a alluvial mine in South America with their transformation to mercury free mining. They have an input of 208t/h of relatively fine particles (-0.25 inch particles make 55% of the total initial weight, -10 Mesh [2mm] particle...
1
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1772
VIEWS
Started by Laurence Jannetjies
Good afternoon Is there a site where I can get free samples of crusher plant modeling. Ie crusher,screens and conveyors
Good afternoon Is there a site where I can get free samples of crusher plant modeling. Ie crusher,screens and conveyors
2
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1005
VIEWS
Started by Solaris1987
Hello Dear I work in an iron concentrator plant and in our process and grinding stage, we use a tramp iron for removing of iron scraps such as rods, broken balls before HPGR mill feed which mounted on belt conveyor. The tramp iron is activated by a...
Hello Dear I work in an iron concentrator plant and in our process and grinding stage, we use a tramp iron for removing of iron scraps such as rods, broken balls before HPGR mill feed which mounted on belt conveyor. The tramp iron is activated by a...
Last replied to by christian2020
Please gentlmen,best Metal detector(s) to distinguish & remove silver scrap from poor mix silver gold ore screened ?
Please gentlmen,best Metal detector(s) to distinguish & remove silver scrap from poor mix silver gold ore screened ?
1
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1208
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Started by Chromst
Hi everyone,I need to find the throughput (in tph) of a primary jaw crusher that is fed by a Grizzly screen O/S. There is a throughput recorded for the grizzly screen feeding belt but how can I find the cutpoint of the grizzly screen? Would it be bes...
Hi everyone,I need to find the throughput (in tph) of a primary jaw crusher that is fed by a Grizzly screen O/S. There is a throughput recorded for the grizzly screen feeding belt but how can I find the cutpoint of the grizzly screen? Would it be bes...
Last replied to by SmartDog
You start asking about the crusher throughput, and then talk about the grizzly cut point. Are you looking for the cut point of the screen in size or tonnage? For the size measure the opening size an...
You start asking about the crusher throughput, and then talk about the grizzly cut point. Are you looking for the cut point of the screen in size or tonnage? For the size measure the opening size an...
1
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642
VIEWS
Started by happie
Hi everyone, we have a quarry which is to have two products at the same time since they are all highly needed, aggregate for railway construction and aggregates for road, tall building, and houses. could you please recommend the best crusher/s for t...
Hi everyone, we have a quarry which is to have two products at the same time since they are all highly needed, aggregate for railway construction and aggregates for road, tall building, and houses. could you please recommend the best crusher/s for t...
Last replied to by SmartDog
Start here: https://www.mclanahan.com/products/modular-wash-plants and here: https://www.kpijci.com/equipment/washing-and-classifying/complete-systems/ and here: https://www.mccloskeywashing.com/...
Start here: https://www.mclanahan.com/products/modular-wash-plants and here: https://www.kpijci.com/equipment/washing-and-classifying/complete-systems/ and here: https://www.mccloskeywashing.com/...
3
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2034
VIEWS
Started by Bob_T
I have an old Union Iron Works jaw crusher that we're trying to get back into service. It came with a 3 phase 15 HP electric motor and we're not sure which direction the crusher flywheel should rotate. Looking at the crusher from the side, wi...
I have an old Union Iron Works jaw crusher that we're trying to get back into service. It came with a 3 phase 15 HP electric motor and we're not sure which direction the crusher flywheel should rotate. Looking at the crusher from the side, wi...
2
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951
VIEWS
Started by gdwright
Good day, Hi, i would like to know the appropriate way of dealing with the used polyurathane screen panels as a waste material.
Good day, Hi, i would like to know the appropriate way of dealing with the used polyurathane screen panels as a waste material.
2
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1491
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Started by vaheedghassemy
hello friends do you know how i can calculate and design the output capacity for a jaw crusher? thanks a lot
hello friends do you know how i can calculate and design the output capacity for a jaw crusher? thanks a lot
2
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859
VIEWS
Started by Natally
I am struggling on the type of primary and secondary crushers that i need to select and size for a copper supergene ore. The ore mainly consist of; • Chalcocite (Cu2S) 33%• Copper Oxide (CuO) 53%• Dolomite [CaMg(CO3)2] 14% The ore a...
I am struggling on the type of primary and secondary crushers that i need to select and size for a copper supergene ore. The ore mainly consist of; • Chalcocite (Cu2S) 33%• Copper Oxide (CuO) 53%• Dolomite [CaMg(CO3)2] 14% The ore a...
Last replied to by David
https://www.911metallurgist.com/blog/primary-crusher-selection https://www.quarry.com.au/files/technical_papers/microsoft_word_-_technical_paper-no.3.doc.pdf https://www.quarry.com.au/files/technica...
https://www.911metallurgist.com/blog/primary-crusher-selection https://www.quarry.com.au/files/technical_papers/microsoft_word_-_technical_paper-no.3.doc.pdf https://www.quarry.com.au/files/technica...
Hello, if you want do maintenance on tyres, for example replacing a broken or chipped stud or you want to measure gap between tyres to reset the static gap, use high pressure water and wash away that ...