A Blueprint for Getting Top Performance from Stirred Mills
The IsaMill is a horizontal, high-intensity stirred grinding mill containing rotating rubber-lined grinding discs mounted on a cantilevered shaft. Ceramic grinding beads are used within the mill and will recirculate between the rotating discs. Grinding of the feed slurry occurs through attrition and abrasion mechanisms.
Investigating the effect on power draw and grinding performance …
Feed slurry is pumped into the feed end of the mill and the media and slurry flows through the mill towards the outlet side. Slurry then exits the mill and media is retained by centrifugal forces and a rotor system that pumps liquid back into the mill. The IsaMill can accept feed particles with sizes of up to around 500 µm.
IsaMill™ uses horizontal milling to secure better energy effi …
install and maintain the IsaMill™. The IsaMill™ takes about a tenth the grinding volume of an equivalent ball or tower mill. There are no external screens or cyclones required because the IsaMill™ internally classifi es the feed and delivers a consistent product. 3. Finer grinding and better˚media Slurry travels in a 'plug' fl ow ...
Flowsheet improvements for the real world
install and maintain the IsaMill™. The IsaMill™ takes about a tenth the grinding volume of an equivalent ball or tower mill. There are no external screens or cyclones required because the IsaMill™ internally classifi es the feed and delivers a consistent product. 3. Finer grinding and better˚media Slurry travels in a 'plug' fl ow ...
1 General Albion Process Description
The grinding media size for the IsaMill™ is within the size range 1.5 – 3.5 mm. Media can come from various sources, such as an autogenous media screened from the feed ore, silica ... Xstrata will provide the IsaMill™ as a packaged Grinding Plant, consisting of the mill, slurry feed and discharge systems, media handling system, all ...
Improving IsaMill™ energy efficiency through shaft spacer design
The first 1.1 MW IsaMill™ using inert media was commissioned at Mt Isa in 1994 and four 1.1 MW IsaMills™ became the enabling technology for the McArthur River project in 1995. ... For each stage of testwork, top-up grinding media was added by addition into the feed pump box to be pumped into the IsaMill™ with the feed slurry. Adding the ...
The development of regrind–flotation pre-treatment of the CIL feed …
When the IsaMill was tested, a 40 dm 3 sample of fresh CIL feed was collected from the processing plant and placed into the agitated feed tank of the pilot M4 IsaMill with inert grinding media, ceramic beads. The entire sample was processed by the IsaMill in consecutive passes until a desired product size for each flotation test was …
IsaMill™
51 technical papers 9 minerals IsaMill™ uses horizontal milling to secure better energy efficiency, product size and availability The IsaMill™ has real-world success in 143 metalliferous installations across 23 countries.
Operating principles
Operating principles. The Jameson Cell consistently produces fine bubbles and intense mixing between air and slurry. This means fast, efficient flotation. While the principle of using air bubbles to recover …
Fine grinding—Developments in ceramic media technology …
media-water and media-slurry. In all other media types ever tested by Xstrata Technology (including ceramics), an IsaMill will draw more power when operating with a media …
Improving IsaMill™ energy efficiency through shaft spacer design
Anderson and Bandarian (2019) further improved recently the energy efficiency of the IsaMill™ have resulted in the development of a new IsaMill™ shaft spacer design. …
IsaMill™ uses horizontal milling to secure better energy …
install and maintain the IsaMill™. The IsaMill™ takes about a tenth the grinding volume of an equivalent ball or tower mill. There are no external screens or cyclones required because the IsaMill™ internally classifi es the feed and delivers a consistent product. 3. Finer grinding and better media Slurry travels in a 'plug' fl ow pattern
(PDF) Performance Comparison of the Vertical and
Varied types/geometries of stirred mills have been produced by different manufacturers, and the comparison task has been accomplished for some of the technologies, i.e., Tower mill vs IsaMill.
The Albion Leach Reactor™
Glencore Technology will provide the IsaMill™ as a packaged Grinding Plant, consisting of the mill, slurry feed and discharge systems, media handling system, all instrumentation …
Effect of media size and mechanical properties on milling efficiency
Grinding of feed with ≈1000 μm top size in a M10,000 IsaMill™ will require ≈5.5 mm media of the highest density and ≈6.5 mm of the lowest density. The higher density type of media has recently become available and will be tested at Anglo Platinum in the future as part of the IsaMill™ development program.
Investigating the Effect on Power Draw and Grinding …
Feed slurry is pumped into the feed end of the mill and the media and slurry flows through the mill towards the outlet side. Slurry then exits the mill and media is retained by centrifugal forces and a rotor system that pumps liquid back into the mill. The IsaMill can accept feed particles with sizes of up to around 500 µm.
Ultrafine Grinding and the IsaMill™ Technology
Glencore Technology will provide the IsaMill™ as a packaged Grinding Plant, consisting of the mill, slurry feed and discharge systems, media handling system, all instrumentation …
Regrind Mills: Challenges of Scaleup Abstract
This mill is filled 80% with media of the same size as final application (typically 1-3 mm), and agitated at 1500 RPM. The mill configuration and operation – discs, disc speed; media size, media type and media filling; and mill discharge classifier – are all very similar to the full scale operation. Therefore the feed particles "see ...
IsaMill™ Design Improvements and Operational …
compression is generated towards the feed end of the IsaMillTM. Slurry feed into the mill counteracts this ... the agitation of media for attrition grinding between agitated media and solid particles in the slurry stream. Metallurgical Plant Design and Operating Strategies (MetPlant 2011) 181 8 - 9 August 2011 Perth, WA ...
Glencore Zinc Projects
The San Juan de Neiva Albion Process™ plant has a throughput of 8000 tpa of concentrate, ground to a size of 80% passing 7 microns. The plant produces 4000 tonnes per annum of cathode zinc from the concentrate, at a recovery of 98.6% w/w. The leach is an oxygenated sulphuric acid leach, using spent electrolyte from the electrowinning plant.
Improving The Efficiency Of Fine Grinding Developments In …
Media selection has a major influence on mill parameters such as energy efficiency, internal wear and operating costs. An inert grinding environment is beneficial to avoid mineral surface degradation and obtain downstream processing and cost advantages [2]. Ceramic media has a profound implication to these parameters and the availability of an ...
Improving IsaMill™ energy efficiency through shaft spacer design
The IsaMill™ addressed the two major issues of energy efficiency and the resultant downstream metallurgy, primarily through the use of stirred, small, inert grinding media. The first 1.1 MW IsaMill™ using inert media was commissioned at Mt Isa in 1994 and four 1.1 MW IsaMills™ became the enabling technology for the McArthur River …
Stirred Mill Optimisation Am I Getting the Most Out of My
Power is the rate at which the IsaMill™ motor applies energy to the charge (slurry and media), measured in kW. Throughput, a function of circuit fresh feed flow rate (m 3 /h) and density (kg/m 3 ), is the rate at which the feed
ISAMILL FINE GRINDING TECHNOLOGY AND ITS
The IsaMill uses fine media, stirring it with very high disc rotation speed, which increases the probability and energy of media/particle collisions. The mill has been designed to …
Regrinding and fine grinding technology
volume) were addressed. The most distinctive feature of the ISAMILL is its media separation system that enables slurry to exit the mill but prevents the grinding media from leaving the mill (Enderle et all, 1997). Since this time, the ISAMILL® technology has been implemented at several mining operations and undergone further development.
IsaMill Technology Used in Effecient Grinding Circuits
The key to the efficiency of the IsaMill™ is the ability to use fine media. While tower mills are typically limited to 10-12mm fresh media sizing, the IsaMill™ can use media as …
Minerals | Free Full-Text | Performance Comparison of the
Varied types/geometries of stirred mills have been produced by different manufacturers, and the comparison task has been accomplished for some of the technologies, i.e., Tower mill vs IsaMill. However, the main drawbacks of these comparisons were the uncommon characteristics of the milling environment, such as media size. In …
Albion Leach Reactor
The Albion Leach Reactor consists of the following components: A corrosion resistant alloy steel reactor that utilizes Glencore Technology's revolutionary ZipaTank™ modular tank technology. Glencore Technology's fully modular tank shell, base and roof systems can be rapidly installed on site in one third the time of a field welded tank and at ...
Performance Comparison of the Vertical and Horizontal …
2.1. HIGMill and IsaMill HIG mill at the site (Figure1) has the following specifications (Table1). In brief, the HIGMill is bottom-fed, and the slurry is pumped via bottom connection. As the feed flows to the upper zones, the particles are subjected to a series of grinding actions imparted by the beads agitated vigorously.
IsaMill medium competency and its effect on milling performance
In early installations in the Mt Isa lead/zinc concentrator 2.0 mm media was used with a feed size of 46 µm. ... Phu Kham IsaMill™ s operate with 3.5 mm media with mill feed P 80 values from ...