copper mining process ppt recovery grade

This flowchart made of machinery icons explains or expresses in simple but clear terms the step of the Copper Mining and Copper Extraction Process Starting from either openpit or underground mining and using a different relevant treatment method for oxide or sulphide copper mineral ore Having a quick look now at how porphyry ores are treated and the metals extracted

About 80 of primary copper production comes from lowgrade or poor sulfide ores After rare because these ores are mostly subjected to hydrometallurgical copper recovery for example heap leaching In Zambia and Zaire are used to process such coppercontaining materials as intermediate products eg cement copper or copperI

Copper processing is a complicated process that begins with mining of the ore less than 1 copper and ends with sheets of 9999 pure copper called cathodes which will ultimately be made into products for everyday most common types of ore copper oxide and copper sulfide undergo two different processes hydrometallurgy and pyrometallurgy respectively due to the different

Copper is produced in the U S primarily by pyrometallurgical smelting methods Pyrometallurgical techniques use heat to separate copper from copper sulfide ore concentrates Process steps include mining concentration roasting smelting converting and finally fire and electrolytic refining 1232 Process Description24

Copper recovery by LSXEX in 1968 In 1968 there were only two widely practiced copper leaching processes using dilute sulphuric acid The first process vat leaching of highgrade copper oxide ore followed by EW of copper from the leach solution produced low quality copper cathode at relatively high cost In 1968 the tonnage of high

copper SXEW in order to make LME Grade ‘A’ specification The copper flotation step is inherently inefficient for cobalt with recoveries typically from 40 for oxides up to 80 for sulphides so there is a substantial amount of cobalt contained in tailings dams that could be recovered –

After carrying out a froth flotation separation the products are as shown in Table 1 Using this data calculate a Ratio of concentration b Metal Recovery c Metal Loss d Weight Recovery or Yield e Enrichment Ratio Table 1 Graderecovery performance of a hypothetical copper ore flotation process

Mining ppt 2014 1 Mining is the process of extracting minerals like gold silver copper nickel and uranium metallic and salt potash From Ore to Finished Product Copper Copper is a major metal and an Copper ore is extracted using two basic methods of mining The next step in the process flow is smelting for sulfide ore

The metal recovery rate or also known as the mineral recovery percentage indicates what percentage of valuable metals are expected to be available for sale after the refining process has taken metal recovery rate can be found in a mining company’s National Instrument 43101 or in a similar applicable international reporting standard

The highest copper recovery of concentrate was found as 6135 with 869 copper content The concentrate with highest copper grade of 3465 was obtained with only 2698 copper recovery

How to calculate grade and recovery concentrate Location Home News Profession news In the process of ore dressing percentage the percent of quality of a product obtained and quality of raw ore known as the yield rate of product

1 Over the past 15 years minetomill studies have focused attention on the impact blast fragmentation has on concentrator throughput Blasting provides the first opportunity for comminution – or size reduction It is also a cheaper and more efficient process compared to both crushing and grinding

Figure 3 – Process categories based on leach recovery vs ore gold grade McNab B 2006 3 LEACHING IN THE NATURAL ENVIRONMENT Water is a universal lowpolarity solvent in action in the nature Water soluble salts in ores tend to dissolve in percolating rainwater and

copper SXEW in order to make LME Grade ‘A’ specification The copper flotation step is inherently inefficient for cobalt with recoveries typically from 40 for oxides up to 80 for sulphides so there is a substantial amount of cobalt contained in tailings dams that could be recovered –

Methods of Metal Recovery by Microorganisms 2 Methods cobalt lead uranium from low grade ores Mining with microbes is both economical and environmental friendly The term metal is used to any substance that is hard possessing silvery lusture and is a good conductor of heat and electricity oil technologists are trying to

Chapter 6 Copper Production Technology The last boomin technological innovation for the copper industry occurred in the first two decades of this century whenopen pit mining flo tation concentrationand the reverberatory smelter were adapted to porphyry copper ores With the exception of leachingsolvent extrac

Introduction to Copper Mining Extraction Copper Applications in Metallurgy of Copper Copper Alloys The process yields concentrates containing Modern methods of extraction allow economic leaching and electrowinning of copper from lowgrade ores and extraction techniques are continuously being refined and developed to achieve the

Introduction to Mineral Processing The figure below is a simplified schematic of a typical copper solvent extraction process Oxide copper ore lowgrade copper sulfide overburden and other coppercontaining materials are stacked into a heap Leach solution pH approximately 2 is sprinkled or flooded on top of the heap and percolates

grade of 055 percent and a recovery rate of875 64 percent copper in the concentrate concentrat ing 1 ton of copper ore requires over 200 billion Btu or approximately 42 million Btuton of cath

A schematic diagram of the conventional process for the production of copper and the SXEW process can be seen here Conventional Copper Extraction Conventionally copper is recovered by a pyrometallurgical process known as smelting In this process copper ore is mined crushed ground concentrated smelted and refined

In the United States the first copper mine was opened in Branby Connecticut in 1705 followed by one in Lancaster Pennsylvania in 1732 Despite this early production most copper used in the United States was imported from Chile until 1844 when mining of large deposits of highgrade copper ore around Lake Superior began