copper ore milling unit operations

  • Copper Ore Processing Methods

    11/04/2017· From the milling standpoint, copper ores may be classified roughly as follows: Ores in which the copper is present in the native or metallic form, represented principally by the ores of the Lake Superior district. These ores respond to gravity concentration of the coarser particles of copper, and the finer particles may be recovered by flotation or, as at Calumet & Hecla Conglomerate mill, the sand portion of the gravity- plant tails may be leach

    Chat Online
  • Typical Copper Oxide Ore Leaching Operations OneMine

    Unit operations include size reduction, agitation leaching, countercurrent decantation washing of residue, pH adjustment of solution, clarifica¬tion, solvent ion exchange, and electrowinning of copper, with a mini¬mum of environmental impact. The feed to the primary crushers is composed of: 1) -10-in. stockpiled oxide ore, which has passed through the mine crusher and has been grade

    Chat Online
  • (PDF) UNIT OPERATIONS IN MINING SURFACE MINING

    The recovered ore for each sector is 14.1 lb, 12.2 lb, 10.3 lb, 8.4 lb, 6.6 lb respectively. The mining milling and treatment cost table is given below. Given the stripping cost is 40 ¢/m3, find economic stripping ratios for 25 ¢/lb,30 ¢/lb,35 ¢/lb Copper prices. Head (%Cu) 0.8 0.7 0.6 0.5 0.4 Recovery (Cu/ton) 14.1 lb 12.2 lb 10.3 lb 8

    Chat Online
  • Copper Flotation Mineral Processing & Metallurgy

    19/03/2017· As it is shown in this study the ¾” or 1″ crushed ore is fed to a rod mill operating in open circuit and discharging a product approximately minus 14-mesh. The discharge from this primary rod mill is equally distributed to two ball mills which are in closed circuit with SRL Rubber Lined Pumps and two or more cyclone classifiers. The rod mill and two ball mills are approximately the same size for

    Chat Online
  • Typical Copper Oxide Ore Leaching Operations OneMine

    Unit operations include size reduction, agitation leaching, countercurrent decantation washing of residue, pH adjustment of solution, clarifica¬tion, solvent ion exchange, and electrowinning of copper, with a mini¬mum of environmental impact. The feed to the primary crushers is composed of: 1) -10-in. stockpiled oxide ore, which has passed through the mine crusher and has been grade

    Chat Online
  • Copper Flotation Mineral Processing & Metallurgy

    19/03/2017· As it is shown in this study the ¾” or 1″ crushed ore is fed to a rod mill operating in open circuit and discharging a product approximately minus 14-mesh. The discharge from this primary rod mill is equally distributed to two ball mills which are in closed circuit with SRL Rubber Lined Pumps and two or more cyclone classifiers. The rod mill and two ball mills are approximately the same size for simplified

    Chat Online
  • (PDF) UNIT OPERATIONS IN MINING SURFACE MINING

    Grade 0.50 % Cu 0.40 % Cu Recoverable Copper Per Ton 8.4 lb 6.6 lb Costs Per ton Ore Per ton Ore Mining $ 0.45 $ 0.45 Milling, general expense and depreciation $ 1.25 $ 1.25 Treatment, Selling and Delivery $ 0.55 $ 0.44 Example: Cut-off Grade • Find the total production cost excluding stripping for both sectors. For 0.5% Cu Total production cost = 0.45 + 1.25 + 0.55 = 2.25 $/ton For 0.4% Cu Total

    Chat Online
  • Copper Mining Process Operations Minto Explorations

    Ore is extracted from the mine with 45-tonne haul trucks utilizing a 15% ramp to surface. The underground operations are currently producing 2,500tpd and plans are in place to ramp up that production level in 2021 as we expand into other areas of the mine operation. Our current main mining area is Copper Keel and it utilizes the longhole stoping method. We have invested in two new

    Chat Online
  • Advanced Controller for Grinding Mills: Results from a

    The copper concentrator in Pinto Valley, Arizona processes a 0.4% grade copper ore from a nearby open pit mine. The unit operations consisting of crushing, grinding, and flotation process about 65,000 tons of ore per day in six overflow ball mills. The concentrate is transported to a smelter a few miles away. The crushed ore from primary and secondary ores is conveyed into bins. The ore from the bins is fed into

    Chat Online
  • Copper ore grinding in a mobile vertical roller mill pilot

    10/03/2015· In the air swept mode, roller mill and a high efficiency classifier are suited as a single unit in the same system. During the operation, the material is initially fed to the middle of the table rotating then head towards the edge of the table where the rollers exert pressure to grind particles. The ground particles are lifted up to the classification zone where the target product size is obtained and the reject

    Chat Online
  • Mining & Processing Operations Ok Tedi Mining Limited

    Ore is mined and processed at an onsite flotation processing plant capable of treating up to 24 million tonnes per annum (Mtpa). The plant currently recovers copper, gold and silver into a saleable concentrate. The primary ore is crushed and ground using Semi-Autogenous Grinding and Ball mills to a final grain size of approximately 180 microns.

    Chat Online
  • Economic of Copper Processing SlideShare

    23/06/2013· Effective costs of Copper Processing Example of porphyry copper mine processing costs A typical smelter contract for copper concentrates issummarized in Table 2. Consider a porphyry copper minetreating an ore containing 0.6% Cu to produce aconcentrate containing 25% Cu, at 85% recovery. This is aconcentrate production of 20.4 kg/ton of ore treated.Therefore, at a copper price of £ 980/ton.

    Chat Online
  • Mill (grinding) Wikipedia

    A mill is a device that breaks solid materials into smaller pieces by grinding, crushing, or cutting. Such comminution is an important unit operation in many processes. There are many different types of mills and many types of materials processed in them. Historically mills were powered by hand or by animals, working animal, wind or water. In modern era, they are usually powered by electricity. The grinding of

    Chat Online
  • Stamp mill Wikipedia

    The first stamp mill in the U.S. was built in 1829 at the Capps mine near Charlotte, North Carolina. They were common in gold, silver, and copper mining regions of the US in the latter 19th and early 20th centuries, in operations where the ore was crushed as a prelude to extracting the metals. They were superseded in the second half of the 19th century in many applications by more efficient methods.

    Chat Online
ZhengZhou N-CAI Corporation © 2020 Copyright.Crusher