SAMPLING SYSTEMS
TecProMin S.A.
- Established in 1984 – Santiago, Chile.
- Company specialized in the design engineering and fabrication of technologies and equipment used on mineral processing .
- Installation all throughout South and central America, Spain, Indonesia and Australia, among others.
- Staff of engineers and professionals with proven experience in mineral processing plants on mining and chemical industry.
- In house Multy-Disciplinary Engineering Department.
- Sampling Stations manufactured under Current Industry Standards.
SAMPLING SYSTEM MAIN APPLICATIONS
- Metallurgical Balances
- Optimization of existing operations
- Process Control
- Sales & Purchasing Products
MAIN MINERAL APPLICATIONS
- Ore Sampling Systems
- Slurry Sampling Systems
- Concentrate Sampling Systems. (8-12% Moisture)
- Solutions Sampling Systems
TYPES OF SAMPLE CUTTERS
- Non Standard
- Static
- Deflectors
- Flexible Hoses
- Mobile Gates
- Pendulum Path
- Others
- Standard
- Cross Cutter
- Rotary Cutter
ADDITIONAL INFORMATION
- Standards References: ISO 11.794, 12.744, 12.743, CNAM007, etc.
- Flow obstruction going to static cutter
- Critical pit falls of static cutters
- Segregation in the entry of a tertiary cutter by generation of bubbles from the secondary cutter
- Sample output flow
- Obstructed static cutter
- Critical pit falls of static cutters
- Delimitation error
- Critical points of
- Cross cutters
- The totality of the flow is not taken
- Critical points of
- Cross cutters
WHAT IMPACT HAS A NON-STANDARD (INCORRECT GEOMETRY) SAMPLING SYSTEM?
- Differences between the ore declared from mine, and what the plant receives
- Differences between the calculated and the effective balance
- Performance of equipment in grinding, grading, etc.
- Do we know the reasons behind these differences?
- Is the way we are taking the sample the correct one?
- Is the sampling station adequate for the current process?
WHAT QUESTIONS SHOULD WE ASK OURSELVES AS PLANT OPERATORS
- Simulation of particle size segregation and its impact on proper sampling station design
- Example particle size distribution
- Cross stream cut of a slurry weir and size distributions
- Simulation of particle size segregation and its impact on proper sampling station design
- Operation of a stationary sampler, partially blocked
- Obstructed cutter
- Simulation of particle size segregation and its impact on proper sampling station design
- Simulation of particle size segregation and its impact on proper sampling station design
- Comparation between the real weight distribution by size v/s actual mass taken by a partially obstructed stationary sampler
- Simulation of particle size segregation and its impact on an undersized cross cutter
- Actual Sample Volume = 287 lt
- Proy. Sample Volume = 490 lt.
- Simulation of particle size segregation and its impact on an undersized cross cutter
- Comparation between the real weight distribution by size v/s actual mass taken by an undersized cross cutter
- Simulation of particle size segregation and its impact on a properly designed cross cutter
- Actual Sample Volume = 490 lt
- Proy. Sample Volume = 490 lt.
- Comparation between the real weight distribution by size v/s actual mass taken by a properly designed cross cutter
- Simulation of particle size segregation and its impact on a properly designed cross cutter
GENERAL CONCLUSIONS OF THE PREVIOUS ANALYSIS
- Static or stationary Cutters do not take the actual complete granulometric profile.
This leads to differences up to 15% in the actual mass distribution taken from the stream. - Non Standard designed cross cutters lose a significant portion of the sample.
This leads to differences of up to 12% (or more) in calculated mass balance vs. real fine in concentrates. - The only equipment that guarantees a representative sample, is a cross cutter and/or rotary cutter, well designed.
- For a sampling system to work properly, it should also include a good design of: cross and rotatory equipment, pipelines, ducts, slurry boxes, chutes, handling of rejects, among others.
- It is important that the client has proper equipment maintenance procedure.
MAIN FEATURES OF A SAMPLING SYSTEM
- Cut the entire flow of a stream
- Heavy Duty Design
- Avoid loss of sample material
- Avoid contamination of samples
- Easy to maintain, clean and / or wash
- Appropriate accesses
- Control system suitable for all signals
- HSEC Considerations
- Proper materials handling
- Representative
- Auditable
COMPUTATIONAL FLUID DYNAMICS (CFD)
- Discret Element Method (DEM)
- Ore Sampling System
- Ore Sampling System
- Ore Sampling System
- Slurry Sampling System
SLURRY SAMPLING SYSTEM
- Concentrate Sampling System
- Concentrate Sampling System
