our products

D&Q Mining is a high-tech company integrating R&D, production and sales. It provides mature products and solutions such as crushers, sand making, milling equipment, mobile crushing stations, etc., for aggregate, mining and waste recycling.

copper ore hpgr rolls

HPGR: The next-gen High Pressure Grinding Roll

Whether you operate a greenfield or brownfield plant, the best solution for your heap leach process is HPGR . Two key characteristics of copper and gold ore crushed by High Pressure Grinding Rolls more fines and micro cracks result in much better recovery rates than conventionally crushed ores. HPGR in iron-ore

More

High pressure grinding rolls (HPGR) liming

High pressure grinding rolls (HPGR) are used for size reduction or rocks and ores. They compress the feed material between two rotating rollers, one of which is in a fixed position and another roller that is floating. The two rotating rollers generate such a high pressure that it grinds the feed material to the desired smaller grain size.

More

Los Andes Copper engineers a Vizcachitas alternative

It is a combination of improved technology, reduced fine grind requirements and maintenance benefits that led to Los Andes Copper replacing the SAG and ball mill crushing circuit proposed in its Vizcachitas copper-molybdenum project preliminary economic assessment (PEA), with a three-stage crushing circuit that uses high pressure grinding roll (HPGR) technology in the tertiary crushing stage

More

Particle damage and exposure analysis in HPGR crushing of

Oct 01, 2011· Highlights Copper ores (copper oxide ore and copper sulfide ore) were crushed by a jaw crusher and by HPGR. Crushed and sized products were evaluated for particle damage and copper grain exposure by X-ray computed tomography. Column leaching was done to determine the rate and extent of copper recovery. HPGR crushed products have more particle damage and higher copper recoveries. Copper

More

(PDF) Influence of type of lining in high-pressure

In order to assess, in a more direct way, the ability of high-pressure roll grinding in particle weakening, copper and gold ores crushed in the HPGR and conventional crushing equipment (such as a

More

HIGH PRESSURE GRINDING MOVING AHEAD IN COPPER,

At the Nurkazgan copper plant of Kazachmyss, Kazakhstan, two HPGR units Type RP 13- 170/140 (roll diameter 1.7 m, roll width 1.4 m) are operating in series, each in closed circuit with a partial product recycle and a closing 5 mm aperture screening.

More

High Pressure Grinding Rolls (HPGR)

High Pressure Grinding Rolls (HPGR) In Comparison to SAG Milling Technology Presented by: Hassan Ghaffari, P.Eng. Raytcho Anguelov, P.Eng. Jake Alexander, MBA 60,000 tpd Copper Gold Ore Seabridge Gold Inc. Courageous Lake Project Trade-off Study 25,000 tpd Gold Ore . Projects China Project HPGR Study

More

Why HPGRs are revolutionising mill circuits

Aug 07, 2019· Starting in the 1980’s, HPGR was first successfully implemented in the cement industry and is now used across a wide range of mining applications. Today, there are more than 200 machines operating in the mining industry around the globe, on more than 150 sites. These energy-efficient grinding machines are mostly used for processing iron, gold, copper and diamond ores, although they’re

More

Real and Potential Metallurgical Benefits of High Pressure

High Pressure Grinding Rolls Copper & Gold Ores 0 10 20 30 40 50 60 70 80 90 100 0 100 200 300 400 Unconfined compressive strength, MPa ATWAL wear rate, g/t Diamond Iron ore Copper Gold ores Low abrasive copper ores Platinum Ore Pebbles Platinum Ore UG2 Test Results Abrasion Test Results Abrasion Index of Various OresIndex of Various Ores

More

How HPGRs compare to conventional milling

Aug 19, 2019· Within this highly-compressed bed of rock, an Enduron® HPGR delivers as much as 5N/mm in pressure, significantly reducing even highly-competent ores, such as diamond, gold, copper and coarse iron ore, while achieving throughputs of up 9,000 t/h that ball mills can’t match. Offloading (S)AG Mills pebble crushing via HPGR

More

High pressure grinding rolls (HPGR) liming

High pressure grinding rolls (HPGR) are used for size reduction or rocks and ores. They compress the feed material between two rotating rollers, one of which is in a fixed position and another roller that is floating. The two rotating rollers generate such a high

More

INFLUENCE OF COPPER ORE COMMINUTION IN HPGR ON

INFLUENCE OF COPPER ORE COMMINUTION IN HPGR ON DOWNSTREAM MINERALLURGICAL PROCESSES Crushing processes taking place in high-pressure grinding rolls devices (HPGR) are currently one of the most efficient methods of hard ore size reduction in terms of the energy consumption. The HPGR products are characterized by a fine particle size and the

More

Influence of type of lining in high-pressure grinding

Keywords: HPGR, comminution, copper ore, high-pressure grinding rolls device, HPGR linings, ore processing, energy consumption Introduction Industrial comminution operations in mining and mineral processing sector consume over 50% of total energy utilized for total ore

More

High Pressure Grinding Rolls (HPGR)

High Pressure Grinding Rolls (HPGR) In Comparison to SAG Milling Technology Presented by: Hassan Ghaffari, P.Eng. Raytcho Anguelov, P.Eng. Jake Alexander, MBA 60,000 tpd Copper Gold Ore Seabridge Gold Inc. Courageous Lake Project Trade-off Study 25,000 tpd Gold Ore . Projects China Project HPGR Study

More

EXPLORING HPGR TECHNOLOGY FOR HEAP LEACHING OF

economic recovery from these fresh rock low-grade gold ores is increasing. Esna-Ashari & Kellerwessel (1988), Patzelt et al (1996) and Baum (1997) have reported on the liberation benefits of HPGR for gold and copper ores. Micro-cracking, resulting from the high-pressure inter-particle comminution process was believed responsible for

More

Why HPGRs are revolutionising mill circuits

Aug 07, 2019· Starting in the 1980’s, HPGR was first successfully implemented in the cement industry and is now used across a wide range of mining applications. Today, there are more than 200 machines operating in the mining industry around the globe, on more than 150 sites. These energy-efficient grinding machines are mostly used for processing iron, gold, copper and diamond ores, although they’re

More

Real and Potential Metallurgical Benefits of High Pressure

High Pressure Grinding Rolls Copper & Gold Ores 0 10 20 30 40 50 60 70 80 90 100 0 100 200 300 400 Unconfined compressive strength, MPa ATWAL wear rate, g/t Diamond Iron ore Copper Gold ores Low abrasive copper ores Platinum Ore Pebbles Platinum Ore UG2 Test Results Abrasion Test Results Abrasion Index of Various OresIndex of Various Ores

More