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63
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3489
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Started by
As a follow up to Chris Twigge-Molecey’s paper “Knowledge, Technology and Profit”, which investigated the aggregate causes for many problem projects in the mining and metals industry, Hatch is conducting a study to update the paper with more c...
As a follow up to Chris Twigge-Molecey’s paper “Knowledge, Technology and Profit”, which investigated the aggregate causes for many problem projects in the mining and metals industry, Hatch is conducting a study to update the paper with more c...
3
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2680
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Started by Zander Barcalow
Can somebody please help with information about UV and visible light diamond sorting.
Can somebody please help with information about UV and visible light diamond sorting.
21
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1392
VIEWS
Started by Obersturmbann
The technology continues as work in progress. It will be great to see it scale to large high grade copper ore bodies! I've seen similar results for ore types from a few ore bodies. A major difficulty is dealing with the tonnages for porphyry copper d...
The technology continues as work in progress. It will be great to see it scale to large high grade copper ore bodies! I've seen similar results for ore types from a few ore bodies. A major difficulty is dealing with the tonnages for porphyry copper d...
3
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2132
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Started by Rahil Khan
I need some advice, in a PGM plant which one of the plants feed; mill feed or the PRF grade is the more accurate grade to determine the head grade?
I need some advice, in a PGM plant which one of the plants feed; mill feed or the PRF grade is the more accurate grade to determine the head grade?
Last replied to by OberstGruppen
I would suggest that the head grade to a PGM concentrator should be measured at the feed to your first stage milling depending on the configuration of the concentrator i.e. MF, MF2 etc. If you head gr...
I would suggest that the head grade to a PGM concentrator should be measured at the feed to your first stage milling depending on the configuration of the concentrator i.e. MF, MF2 etc. If you head gr...
19
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2179
VIEWS
Started by Oberfuhrer
Am trying to automate lab scale flotation testing. I'm particularly interested in equipment that has been used to try to eliminate the possibility of human error when it comes to testing. For example, in a batch laboratory flotation test there are m...
Am trying to automate lab scale flotation testing. I'm particularly interested in equipment that has been used to try to eliminate the possibility of human error when it comes to testing. For example, in a batch laboratory flotation test there are m...
Last replied to by
You can find an automated forced-air mechanical lab flotation machine at http://is.gd/FbKpaT. Many features are available in this unit, such as six peristaltic pumps to schedule continuous or staged r...
You can find an automated forced-air mechanical lab flotation machine at http://is.gd/FbKpaT. Many features are available in this unit, such as six peristaltic pumps to schedule continuous or staged r...
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1290
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Started by Marshal Meru
How many do I have to sampling for analysis assaying of metal in crushed PCB(Printed Circuit Board)? I sieved that 6-7 fraction.I'm very eager for successful sampling. Actually I got different results whenever I analyze PCB and Electronic components...
How many do I have to sampling for analysis assaying of metal in crushed PCB(Printed Circuit Board)? I sieved that 6-7 fraction.I'm very eager for successful sampling. Actually I got different results whenever I analyze PCB and Electronic components...
Last replied to by Standartenfurer
Biggest issue you'll face is the potential variability of the boards. So long as it is economically viable granulate the bulk material as small as possible to reduce the potential variability. Sub sam...
Biggest issue you'll face is the potential variability of the boards. So long as it is economically viable granulate the bulk material as small as possible to reduce the potential variability. Sub sam...
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1049
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Started by
How much of an increase in plant performance would you require to justify trialling a new product? We have seen time and again that plant owners and operators are adverse to change and stick with the status quo regardless of the potential for huge ad...
How much of an increase in plant performance would you require to justify trialling a new product? We have seen time and again that plant owners and operators are adverse to change and stick with the status quo regardless of the potential for huge ad...
Last replied to by Marshal Meru
This is a very interesting topic. It is always challenging to prove that a particular change increases recoveries by 1 or 2%. There is always a great amount of noise due to random plant variations. I ...
This is a very interesting topic. It is always challenging to prove that a particular change increases recoveries by 1 or 2%. There is always a great amount of noise due to random plant variations. I ...
5
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1062
VIEWS
Started by
Which parameter (Grade, Recovery and Reagent, Utility consumption, etc.) could be defining in concentrator plant (Flotation& Grinding) performance guarantee? How can we determine the liquid damages?While recovery is a deciding factor in performance g...
Which parameter (Grade, Recovery and Reagent, Utility consumption, etc.) could be defining in concentrator plant (Flotation& Grinding) performance guarantee? How can we determine the liquid damages?While recovery is a deciding factor in performance g...
Last replied to by Sachin Prakash
In an operating plant there may be some variables both in feed ore quality and varying operating conditions in dynamic conditions. This would lead to generate different results as compared to laborato...
In an operating plant there may be some variables both in feed ore quality and varying operating conditions in dynamic conditions. This would lead to generate different results as compared to laborato...
8
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1321
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Started by Amar
Does anyone can refer a supplier who can provide a lab scale mini pilot plant which can treat 8-15 kg ore per hour?We are considering a ready-made thing like that offered by Eriez flotation division.
Does anyone can refer a supplier who can provide a lab scale mini pilot plant which can treat 8-15 kg ore per hour?We are considering a ready-made thing like that offered by Eriez flotation division.
Last replied to by Subhash-Kumar-Roy
The desire to do more with fewer samples is always present during flow sheet development. One must be careful to properly select the tool in relation to the goal being sought.If the goal is to assess...
The desire to do more with fewer samples is always present during flow sheet development. One must be careful to properly select the tool in relation to the goal being sought.If the goal is to assess...
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1395
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Started by OberstGruppen
Does anyone know any new method to beneficiation of low-grade sedimentary phosphate? (P2O5 about 9-10%) with carbonate gangue.
Does anyone know any new method to beneficiation of low-grade sedimentary phosphate? (P2O5 about 9-10%) with carbonate gangue.
Last replied to by Unterstarm
As a general comment, one of the golden rules in flotation separations is to float the mineral in least abundance. You have the opportunity to directly float the phosphate minerals, simplify the flows...
As a general comment, one of the golden rules in flotation separations is to float the mineral in least abundance. You have the opportunity to directly float the phosphate minerals, simplify the flows...
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3722
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Started by Obergruppenfuhrer
Is Particle Size distribution important in lab testing? Is the same grind using rods, bars are different sizes? Usually at batch testing we try to match a P80, however will be the same using rods, balls, etc. How is affected the particle size distrib...
Is Particle Size distribution important in lab testing? Is the same grind using rods, bars are different sizes? Usually at batch testing we try to match a P80, however will be the same using rods, balls, etc. How is affected the particle size distrib...
Last replied to by Zander Barcalow
Just to add to your comment, while rod mills are not often used in 3m or larger mills anymore due rods getting tangled, they are still useful in a laboratory mill in that the product being more "even"...
Just to add to your comment, while rod mills are not often used in 3m or larger mills anymore due rods getting tangled, they are still useful in a laboratory mill in that the product being more "even"...
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1175
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Started by Standartenfurer
Does anyone have an idea on how we can recover tellurides from platinum ores
Does anyone have an idea on how we can recover tellurides from platinum ores
Last replied to by
Take a look at these theses:MatthysVermaak - Fundamentals of the Flotation Behaviour of Palladium Bismuth Tellurides, Ph.D. Thesis, Univ. Pretoria, 2005.ShamuduluShamaila, A Study of the Flotation Beh...
Take a look at these theses:MatthysVermaak - Fundamentals of the Flotation Behaviour of Palladium Bismuth Tellurides, Ph.D. Thesis, Univ. Pretoria, 2005.ShamuduluShamaila, A Study of the Flotation Beh...
8
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1354
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Started by Helena Russell
I have read several texts and articles regarding bioremediation but have not run across a simple explanation of how one goes about selecting an effective yet economical carbon source for anaerobic and aerobic bioreactors. Currently I have seen the us...
I have read several texts and articles regarding bioremediation but have not run across a simple explanation of how one goes about selecting an effective yet economical carbon source for anaerobic and aerobic bioreactors. Currently I have seen the us...
Last replied to by Helena Russell
I should have been a bit more specific. I am mainly interested in liquid carbon source alternatives for bioreactors in a plant environment.
I should have been a bit more specific. I am mainly interested in liquid carbon source alternatives for bioreactors in a plant environment.
5
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1209
VIEWS
Started by OberstGruppen
I am looking for ball clay washing process (industrial).is there any company or person support me for engineering, design and running?
I am looking for ball clay washing process (industrial).is there any company or person support me for engineering, design and running?
Last replied to by Helena Russell
Please tell me detail size analysis and mineralogical, chemical analysis report, i will provide you detail engineering design, equipment list and other information.
Please tell me detail size analysis and mineralogical, chemical analysis report, i will provide you detail engineering design, equipment list and other information.
1
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1256
VIEWS
Started by
Do we have any crude way of determining the specific gravity (SG) of an iron ore?Just need a simple method of determining the specific gravity of an iron ore.
Do we have any crude way of determining the specific gravity (SG) of an iron ore?Just need a simple method of determining the specific gravity of an iron ore.
Last replied to by Gruppen
Crush the ore to less than 3 cm, weigh out approximately 1000 grams and record exact weight, add ore to a one liter graduated cylinder half filled with water, note rise in water level after the ore is...
Crush the ore to less than 3 cm, weigh out approximately 1000 grams and record exact weight, add ore to a one liter graduated cylinder half filled with water, note rise in water level after the ore is...
5
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968
VIEWS
Started by Marshal Meru
Anyone has experience for reducing/removing As and Ni from U Uranium Ore Slurry?Our As and Ni is almost 120-150 times more than McArthur ore. The mining method is different too. They have facility for blending the ore as they have dry ore while our m...
Anyone has experience for reducing/removing As and Ni from U Uranium Ore Slurry?Our As and Ni is almost 120-150 times more than McArthur ore. The mining method is different too. They have facility for blending the ore as they have dry ore while our m...
Last replied to by Unterstarm
There is no processing separation underground - i.e. metal extraction...so there would be enough room on the surface to install any processing solutions.
There is no processing separation underground - i.e. metal extraction...so there would be enough room on the surface to install any processing solutions.
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1343
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Started by Jean Rasczak
Which reference material is important for simplifying Gold metallurgical accounting and optimization?
Which reference material is important for simplifying Gold metallurgical accounting and optimization?
Last replied to by
I fully agree we often tend to use different words for the same purpose; mass balancing is very important. Often mass balancing based on different elements from the same samples might give different v...
I fully agree we often tend to use different words for the same purpose; mass balancing is very important. Often mass balancing based on different elements from the same samples might give different v...
31
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2137
VIEWS
Started by
Which parameter (Grade, Recovery and Reagent, Utility consumption, etc.) could be defining in concentrator plant (Flotation& Grinding) performance guarantee? How can we determine the liquid damages?While recovery is a deciding factor in performance g...
Which parameter (Grade, Recovery and Reagent, Utility consumption, etc.) could be defining in concentrator plant (Flotation& Grinding) performance guarantee? How can we determine the liquid damages?While recovery is a deciding factor in performance g...
Last replied to by
Yes it is true Recovery will give a good Per, Guarantee and parameter for measurement. But you forgot costing in down line operation after recovering minerals. Grade will play a major role in down lin...
Yes it is true Recovery will give a good Per, Guarantee and parameter for measurement. But you forgot costing in down line operation after recovering minerals. Grade will play a major role in down lin...
5
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1262
VIEWS
Started by Oberfuhrer
Are the barriers to best practice in mine to mill operations financial, behavioural or other? Why is best practice so hard to achieve?
Are the barriers to best practice in mine to mill operations financial, behavioural or other? Why is best practice so hard to achieve?
Last replied to by OberstGruppen
All of the above comments put high values on communication between the stages especially mine to mill. The grinding circuits are all about getting the best result for costs incurred. To get that best ...
All of the above comments put high values on communication between the stages especially mine to mill. The grinding circuits are all about getting the best result for costs incurred. To get that best ...
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1100
VIEWS
Started by Hauptsturm
"We can only manage what we measure and we can only optimize what we control," argues Michael Schaffer of Portage Technologies, and today this is possible for mineral processing circuits. The results are increased throughput and improved recovery...
"We can only manage what we measure and we can only optimize what we control," argues Michael Schaffer of Portage Technologies, and today this is possible for mineral processing circuits. The results are increased throughput and improved recovery...
Last replied to by Jean Rasczak
The use of modern, online analysers permits real time blending to achieve the desired homogeneity in plant feed.
The use of modern, online analysers permits real time blending to achieve the desired homogeneity in plant feed.
7
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980
VIEWS
Started by
What could be the cause of getting different Head grades from two plants which receives the same Ore type from the same mine? The feed to the plants is only split by time or silo availability.The two plants uses FAG mills in close circuit with a clas...
What could be the cause of getting different Head grades from two plants which receives the same Ore type from the same mine? The feed to the plants is only split by time or silo availability.The two plants uses FAG mills in close circuit with a clas...
Last replied to by
Of course segregation in stockpile will cause the difference. The line with coarser feed size has less head grade and vice versa. But of course it depends on mineralogy of deposit. It refers to porphy...
Of course segregation in stockpile will cause the difference. The line with coarser feed size has less head grade and vice versa. But of course it depends on mineralogy of deposit. It refers to porphy...
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1045
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Started by
Please let me know names of some good manufacturers of sliding vane pumps?
Please let me know names of some good manufacturers of sliding vane pumps?
Last replied to by
May be 20 Micron filter is too small for your viscous liquid? We have delivered Viking Pump gear pumps for to pump the paints. They worked wrong after first start -with high vibration level and vacuum...
May be 20 Micron filter is too small for your viscous liquid? We have delivered Viking Pump gear pumps for to pump the paints. They worked wrong after first start -with high vibration level and vacuum...
7
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1165
VIEWS
Started by Paul Morrow
I have a 23.5" I.D. Pipe that is 60' vertical and open to a tank at the bottom. How would you keep 600 gpm of water flowing upwards in the pipe? How do you keep such a small flow from falling out the bottom? We plan on using an 8" discharge.
I have a 23.5" I.D. Pipe that is 60' vertical and open to a tank at the bottom. How would you keep 600 gpm of water flowing upwards in the pipe? How do you keep such a small flow from falling out the bottom? We plan on using an 8" discharge.
Last replied to by
The situation is still not really clear.
The situation is still not really clear.
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1389
VIEWS
Started by
I have a small mining operation, Au, Ag, and lots of sulfides. I am trying to process on a small one man operation to extract the au, what could be the least cost method, and what do I need
I have a small mining operation, Au, Ag, and lots of sulfides. I am trying to process on a small one man operation to extract the au, what could be the least cost method, and what do I need
Last replied to by Paul Morrow
We have well experienced technician they are easily to process Au,Ag from the ore.
We have well experienced technician they are easily to process Au,Ag from the ore.
5
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950
VIEWS
Started by
I have been working on Open Gear automatic lubrication systems now for almost 30 years and have conducted over 150 open gears lubricant conversions in numerous countries. However there is one design failure that is present in almost all systems that ...
I have been working on Open Gear automatic lubrication systems now for almost 30 years and have conducted over 150 open gears lubricant conversions in numerous countries. However there is one design failure that is present in almost all systems that ...
Last replied to by
Do you mean the lubrication system becomes blocked when the pump is removed from the lubricant tank? Therefore contamination is entering the system, do you have a lubricant filter on the outlet of the...
Do you mean the lubrication system becomes blocked when the pump is removed from the lubricant tank? Therefore contamination is entering the system, do you have a lubricant filter on the outlet of the...
2
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1104
VIEWS
Started by Pump Guy
Hi, I am pump guy from Florida. I apply pumps in mining applications. I wanted to clarify the formula for converting dry solids to a slurry flow. In the formula ,Qm = 4 x dry solids ( tons/hr )/Cw = SmWhere is 4 derived from ? and how do I so...
Hi, I am pump guy from Florida. I apply pumps in mining applications. I wanted to clarify the formula for converting dry solids to a slurry flow. In the formula ,Qm = 4 x dry solids ( tons/hr )/Cw = SmWhere is 4 derived from ? and how do I so...
Last replied to by David
Have you checked out http://www.pumpfundamentals.com/ and https://groups.yahoo.com/neo/groups/pumpfundamentals/info
Have you checked out http://www.pumpfundamentals.com/ and https://groups.yahoo.com/neo/groups/pumpfundamentals/info
28
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2594
VIEWS
Started by
"The journey is more important than the destination" Trying to build models of a process or product, forces you to ask questions about this process/product that you perhaps wouldn't have asked otherwise. Even if your model, once in place, isn't very ...
"The journey is more important than the destination" Trying to build models of a process or product, forces you to ask questions about this process/product that you perhaps wouldn't have asked otherwise. Even if your model, once in place, isn't very ...
Last replied to by
Yes, no issue with the fact that technology is changing.I am in other forums where 'Big Data' methods are discussed. Often discussions are quite heated.Society is reaching a point as predicted by Isaa...
Yes, no issue with the fact that technology is changing.I am in other forums where 'Big Data' methods are discussed. Often discussions are quite heated.Society is reaching a point as predicted by Isaa...
13
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1737
VIEWS
Started by
After reviewing:https://www.911metallurgist.com/blog/flotation-flowsheetshttps://www.911metallurgist.com/blog/flotation-cellshttps://www.911metallurgist.com/blog/flotation-cell-designWhat do you think small metallurgical plants will look like in the...
After reviewing:https://www.911metallurgist.com/blog/flotation-flowsheetshttps://www.911metallurgist.com/blog/flotation-cellshttps://www.911metallurgist.com/blog/flotation-cell-designWhat do you think small metallurgical plants will look like in the...
Last replied to by
New project of next generation is very fine. Even better that this project made will be JKMRS and Metso Minerals. A place for the project is selected, too fine- Chile. A low bow to the authors of this...
New project of next generation is very fine. Even better that this project made will be JKMRS and Metso Minerals. A place for the project is selected, too fine- Chile. A low bow to the authors of this...
11
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1244
VIEWS
Started by
How many of you claim Continuing Professional Development hours/points when you attend a conference?
How many of you claim Continuing Professional Development hours/points when you attend a conference?
Last replied to by
On being deputed by the concerned employer, Professionals attend seminars, conferences, workshops either to present their papers / findings or taking part in chairing a technical session or participat...
On being deputed by the concerned employer, Professionals attend seminars, conferences, workshops either to present their papers / findings or taking part in chairing a technical session or participat...
3
REPLIES
3079
VIEWS
Started by
Can anybody explain briefly about the HTRS(High Tension Roll separator) principle, here how the non conducting particles stick to the roll?
Can anybody explain briefly about the HTRS(High Tension Roll separator) principle, here how the non conducting particles stick to the roll?
Last replied to by
Laboratory high tension roll separation and the commercial machines available for this purpose are discussed. The shortcomings of these machines are indicated and a machine that overcomes some of thes...
Laboratory high tension roll separation and the commercial machines available for this purpose are discussed. The shortcomings of these machines are indicated and a machine that overcomes some of thes...
4
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1364
VIEWS
Started by
The product we need to transport with a blower is fine clay below 325 mesh. The clay has less than 1% moist and "flys" easily. The clay has to travel through a 4 inch pipe diameter for 30 meters, of which 20 are horizontal and 10 vertical. The circui...
The product we need to transport with a blower is fine clay below 325 mesh. The clay has less than 1% moist and "flys" easily. The clay has to travel through a 4 inch pipe diameter for 30 meters, of which 20 are horizontal and 10 vertical. The circui...
Last replied to by
A first step would be to estimate the TPH (target, min, max) and the required system availability.
A first step would be to estimate the TPH (target, min, max) and the required system availability.
6
REPLIES
2014
VIEWS
Started by Marshal Meru
How can I find a book or article about sizing mineral processing plant equipment especially heavy-duty slurry pump?
How can I find a book or article about sizing mineral processing plant equipment especially heavy-duty slurry pump?
Last replied to by Jean Rasczak
Also try PCCE, they are specialist slurry pipeline engineering company based in Cape Town, South Africa. They do hydraulic system designs for heavy duty applications. Paste thickened tailings, mine ba...
Also try PCCE, they are specialist slurry pipeline engineering company based in Cape Town, South Africa. They do hydraulic system designs for heavy duty applications. Paste thickened tailings, mine ba...
6
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2266
VIEWS
Started by
Am looking for some possible way to control magnetite loss in a coal beneficiation plant using heavy medium bath circuit for beneficiation.1.Loss through product.2.Loss through magnetic separator.3.Loss due to overflow of dilute medium tank and ba...
Am looking for some possible way to control magnetite loss in a coal beneficiation plant using heavy medium bath circuit for beneficiation.1.Loss through product.2.Loss through magnetic separator.3.Loss due to overflow of dilute medium tank and ba...
Last replied to by
Yes sir, first of all I am analysing the possible routs of magnetite loss from a heavy medium bath coal beneficiation plant and after wards try to reduce this by taking possible corrective action.
Yes sir, first of all I am analysing the possible routs of magnetite loss from a heavy medium bath coal beneficiation plant and after wards try to reduce this by taking possible corrective action.
1
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1400
VIEWS
Started by Marshal Meru
Formula for calculation of size distribution sampling from SAG conveyor belt. I want to optimization a screening circuit and first of all I want to assess the efficiency of screen. How can I calculate the amount of necessary sampling for this issue?
Formula for calculation of size distribution sampling from SAG conveyor belt. I want to optimization a screening circuit and first of all I want to assess the efficiency of screen. How can I calculate the amount of necessary sampling for this issue?
Last replied to by
Review chapter 5 of Mineral Comminution Circuits - their operation and optimisation by Napier Munn at el al.Use the JKMRC technique to sampling SAG Feed (assumption of a bimodal distribution) to reduc...
Review chapter 5 of Mineral Comminution Circuits - their operation and optimisation by Napier Munn at el al.Use the JKMRC technique to sampling SAG Feed (assumption of a bimodal distribution) to reduc...
1
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2358
VIEWS
Started by
Is there any relation between Tyler, ASTM, B.S.S, I.S, AFNOR, and DIN standard test sieves? If any, what is the relation? How the test sieves is are designed? And which is the most popular? Why?
Is there any relation between Tyler, ASTM, B.S.S, I.S, AFNOR, and DIN standard test sieves? If any, what is the relation? How the test sieves is are designed? And which is the most popular? Why?
Last replied to by
There is some similarity between the different standards at certain aperture sizes, but no real easy conversion factor for moving between them. Conversion charts are usually the best option, like the ...
There is some similarity between the different standards at certain aperture sizes, but no real easy conversion factor for moving between them. Conversion charts are usually the best option, like the ...
Hi Carl I came across this very interesting information trail on your website. I tried to use the link to access the "final paper" but it is not activated. Is it possible to get a link to the final p...