emew Blog

Copper Recovery from an Acid Mine Drainage Stream

Posted bySara Wollschlaeger on May 11, 2020 2:16:03 PM

多人做人爱免费视频试看Acid mine drainage: we’ve all heard of it, and its negative reputation. But what if we told you that it’s not all bad? What if this environmental pollutant was recovered and transformed into a profit-turning resource? [Bejan & Bunce, 2015] There are varying methods of dealing with acid mine drainage (AMD), but only some of them are economically viable and effective long-term. This blog post is going to dive into some of the solutions for the treatment of AMD, and how emew technology provides one of the most promising alternatives, specifically for copper recovery from acid mine drainage.

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多人做人爱免费视频试看 Topics:copper,acid,mine,recovery

Factors that affect anode life in electrowinning

Posted byWilliam Gower on Feb 25, 2020 4:30:29 PM

What are the Factors that Affect Anode Life?

In electrowinning, metals ions dissolved in an electrolyte are deposited in a reduced metallic form at the cathode. The conversion of the metal from an ionic (dissolved, positive charge) to metallic form (solid, no charge) at the cathode requires a supply of electrons into the electrolyte solution which is supplied from the anode.

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Topics:electrowinning,anodes

Which impurities affect metal recovery with electrowinning?

Posted byTrevor Bergfeldt on Jun 14, 2019 12:32:23 PM

Electrowinning is a very convenient and robust way to directly recover dissolved metals such as copper, silver, gold, nickel, cobalt, and tin from their aqueous states in a particular electrolyte.  Not surprising then when talking about metal recovery that we tend to focus most of our attention on those metals that we are interested in with the aim of recovering them from solution.  That is after all the objective of the metal recovery process.  What is less often talked about however are the impurities that can affect metal recovery with electrowinning.  This blog post will identify those impurities that are most detrimental and discuss their effect on the electrowinning of some commonly recovered metals from aqueous solutions. 

 

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Free Power for Your Electrowinning Plant

Posted byAlex Barshai on May 7, 2019 10:01:27 AM

As the world is advancing towards clean, sustainable energy sources, businesses in traditional resource industries can be faced with a moral dilemma – to sacrifice margins in favour of clean initiatives or continue using conventional equipment and carbon-based energy sources that ensure revenue maximization.

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Case Study of emew advanced copper liberators compared to conventional electrowinning

Posted byTrevor Bergfeldt on Jan 22, 2019 11:56:03 AM

The electro-refining of copper is a multi-step process that starts with copper concentrate that is smelted to produce impure copper anodes, which are then electrorefined to produce LME Grade A copper cathode (+99.99%).  A simplified block flow diagram of copper refining is shown below.

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Case Study of emew Silver Process versus Conventional Electrorefining

Posted byTrevor Bergfeldt on Jan 8, 2019 9:16:39 AM

Silver refining is a critical part of any precious metals refinery.  Often the higher value metals such as gold and the Platinum Group Metals (PGM’s) are associated with silver, which must be recovered separately as a by-product. 

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Acid in electrowinning - a side effect or a valuable by-product?

Posted bySara Wollschlaeger on Oct 31, 2018 10:36:57 AM
A unique feature of the electrowinning process is acid generation. As a result, acid can be recycled or recovered from the metal depleted electrolyte.  In particular, high concentrations of acid can be produced in an emew cell due to their unique ability to deplete to very low concentrations of metals (< 1 g/L).
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Urban Mining and Metal Recycling

Posted byAlex Barshai on Sep 25, 2018 1:47:15 PM
Did you know that for every million cell phones we recycle, we can recover 多人做人爱免费视频试看 pounds of copper, 772 pounds of silver, 75 pounds of gold and 33 pounds of palladium? By utilizing metal recycling techniques, these recovered metals can be used to solve our continuously depleting resources.
 
In the last decades, we have witnessed a decline in metal concentrations in ores. As a result, mining projects have become more expensive due to the massive amounts of ore that now have to be processed in order to extract pure metal.
 
At the same time, the demand for metals has increased since more and more people in the world are moving to growing cities and want the latest cars, technological gadgets, and computers. Population growth demands housing, infrastructure improvements, public transportation, energy and so on. 
 
So, how do we keep up with the increasing demand for metals while producing countless tons of industrial and electronic waste?
 
The answer is Urban Mining.
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Topics:General

FAQ: Factors that affect production rate and purity

Posted bySara Wollschlaeger on Sep 19, 2018 11:53:56 AM
In this video we discuss which adjustable parameters in the emew cell affect production and purity, as well as which impurities can adversely affect the operation of an emew plant.
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Topics:Video

FAQ: Which metals can emew electrowin?

Posted bySara Wollschlaeger on Sep 11, 2018 8:42:05 PM
In this video, we explain which metals emew can recover, and if selective recovery of silver from a solution with high copper content is possible.
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Topics:Video