Energy and Cost Comparisons of HPGR-based Circuits | E & MJ
Figure 2—HPGR ball-mill circuit. To determine whether the novel HPGR-stirred mill circuit arrangement could achieve energy savings in comparison to conventional SAG mill-based circuits, a pilot-scale study was conducted to compare the energy requirements of the existing circuit at the Huckleberry mine to two alternative circuits: an HPGR-ball mill circuit and a novel HPGR-stirred mill circuit.
COMPARISON OF HPGR - BALL MILL AND HPGR - STIRRED …
Specific energy requirements for the proposed HPGR - ball mill circuit and HPGR - stirred mill circuit were determined from a pilot-scale HPGR and stirred mill test, in association with a JK SimMet® simulation. Results obtained from the research showed that the HPGR - ball mill circuit and HPGR -
Comparison of HPGR - ball mill and HPGR - stirred mill ...
To support the base case, the existing circuits were fitted and simulated using a JK SimMet® model. Specific energy requirements for the proposed HPGR - ball mill circuit and HPGR - stirred mill circuit were determined from a pilot-scale HPGR and stirred mill …
Popularity of Stirred Mills and HPGR - Crushing, Screening ...
Similar to Alexs comments on the stirred mill, HPGR also have maintenance and capacity issues. You need several to equal one SAG or ball mill. This requires a lot of chutes and diverters that are major wear points. You also have to have more conveyors to collect the product. All this adds up.
*C. Wang , S. Nadolski , O. Mejia , J. Drozdiak , B. Klein
At a grind of 80% passing 75 µm, the HPGR - stirred mill circuit showed a 34% reduction in energy compared to the base case. It was concluded that the energy reduction for the new flowsheets significantly improved the economics of the Huckleberry comminution duty. KEYWORDS.
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on the specific energy requirements for comminution, the HPGR / stirred mill circuit ... High pressure grinding roll, stirred mill, energy, comminution, flowsheet... Get Price. POLYCOM® high-pressure grinding roll for the minerals industry.
(PDF) Reducing Grinding Energy and Cost -Magnetite Iron ...
accuracy requirements for a high level options stud y of this nature. The details of the cost ... evaluated, the application of HPGR and stirred mill technology is indicated to reduce energy.
HPGR High Pressure Grinding Rolls
HPGR or high-pressure grinding rolls have made broad advances into nonferrous metal mining. The technology is now widely viewed as a primary milling alternative, and there arc a number of large installations commissioned in recent years. After these developments, an HPGR based circuit configuration would often be the base case for certain ore types, such as very hard, abrasive ores. …
(PDF) Processing of Magnetite Iron Ores–Comparing Grinding ...
application of HPGR and stirred mill technology is indicated to reduce energy consumption by up to 25 per cent compared to conventional flow sheets with wet tumbling mills.
Eco-efficient and cost-effective process design for ...
Feb 24, 2015 · A significant fraction of iron ore used in steel production comes from magnetite deposits. Magnetite iron ore requires significant beneficiation, which typically involves grinding to a particle size where magnetite is liberated from its silicate matrix. And grinding consumes a lot of energy. This article investigates eco-efficient alternatives for the process design for magnetite iron ore.
HPGR - Why skewing is a requirement for operational ...
Oct 02, 2019 · HPGR - Why skewing is a requirement for operational applications In our latest white paper, HPGR experts Henning Knapp, Stephan Hannot and Frank van der Meer explore the effects of HPGR skewing on wear life and efficiency using operational data.
high speed stirred ball mill - wembleyprimaryschool.co.za
comparison of hpgr ball mill and hpgr stirred … comparison of hpgr ball mill and hpgr stirred mill circuits to the existing ag sag mill ball mill circuits by chengtie wang b eng university of science and technology beijing 2009 a thesis submitted in partial fulfillment of the requirements for the degree of master of applied science in …
Energy and cost comparisons of HPGR-based circuits: UBC ...
In retrospect, the study shows that the application of an HPGR-stirred mill circuit can significantly lower the energy required for mechanical size reduction. There was a discrepancy in the additional power required to reduce the final product size from 160 to 75 [micro]m for …