Metallurgical Viability, Inc.

robert@metallurgicalviability.com or

al@metallurgicalviability.com

 

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 Process ....  Engineering..

PFD Examples

Copper Refinery Waste Water Treatment

Synthetic Cu2O Mill Scale

Solar Grade Si

Nozzle-Based Magnesium Process

 

 

 Other,,,,

Beta Test TaskMaster Software

 

Mostly Original Process Flow Diagrams

Below are many original process flow diagrams, all of which work and are economically competitive.

If you have a concept for a new process and need help filling in the details give us a call.  We can use our experience and vendor support to fill in the details on your process flow diagram (PFD).

Of if you have a technical or chemical process problem, perhaps we can suggest a flowsheet to meet your objectives.  Developing a sound PFD is the first step in evaluating the economic viability of your process.  Once a PFD is developed, a material and energy balance model can be developed. Once this model is combined with project details and cost/price information, we can develop an Income Statement for your process.  From here, we should be able to know if your process has a potential to be competitive. Sorry, we don't know any short-cuts that are worth taking.

Below are a few of the none proprietary flow sheets we have developed over the years.  There are many more than now belong to existing companies varying in size from mom-and-pop operations to major oil companies.

MgO and Ultra-Pure Silica Production from Asbestos Tailings

This flow sheets demonstrate the production of magnesium from asbestos tailings using the results of various research studies as my guide plus my own experience with hydrometallurgical processing of magnesium.  This flowsheet comes out of a techno-economic model being developed to evaluate the economics of making magnesium from asbestos via a unique carbo-thermal process. 

The first flowsheet of the process, making MgCl2 liquor from asbestos is  shown.  Some optimization needs to occur here, but the flowsheet is fundamentally sound: 

  Asbestos to MgCl2 Flowsheet2

The second flowsheet precipitates the MgO.xH2O from the MgCl2 stream.  The MgO.xH2O will be converted to MgO at the front-end of the carbo-thermal process. 

Flowsheet for MgCl2 to MgO.xH2O

The third flowsheet is a scrubbing circuit from gases coming out the carbo-thermal process. 

The process also produces ultrapure silica, since asbestos tailings are naturally low in boron and phosphorus.  The process for making solar grade silicon is straight-forward starting with a good quality silica.

Solar Grade Silicon

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Copper Removal from Absorption Chillers

Air leaks into vacuum absorption chillers causes copper to corrode and buildup in the lithium bromide. It will eventually precipitate out somewhere in the circuit, perhaps at a small opening, or you can actively remove it.

CuES - Copper Extraction System

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Nozzle-Based Carbothermal Magnesium

NBC Mg Process

The fourth flowsheet is unique in that it puts three flow sheets together in a unique configuration.  All the sub-flowsheets have been tested at least at the pilot-scale.  It is my belief that a carbo-thermal process can compete with the Chinese Industry, unless of course they adopt this process first.  

The carbo-thermal process is based on a "venturi" patent by MTL (Magnesium Technology Limited, Inc).   A paper is in progress that will be downloadable from here or TMS.  The MV_Model  for this process is downloadable, see above.  .

 

 

Generic  Hazardous Waste Flowsheet for F006 & Waste Acid

This process uses waste acids to process plating wastes primarily from metal plating operations (F006).  Conventional metallurgical processes applied to hazardous metal wastes.  Downside of this process is that most producers of F006 produce less than 300 tpy.  Handling and transportation costs are significant.

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Process for Electric Arc Furnace Dust (K061)

Conventional zinc pyrometallurgy and hydrometallurgy applied to electric arc furnace dust.  Why re-invent the wheel.  Process economics derive from the fact that a tipping fee comes with the feedstock.  Downside of the process is that substantial economies of scale are required to compete against the very efficient metal industry.  

EAF Dust Flowsheet. The linked flowsheet is an example of applying existing technology to capitalize on market opportunities. The idea is simple. This flowsheet identifies the pre-processing required to prepare electric arc furnace dust (EAFD), or K061, for use with conventional, established zinc refinery technology. With this approach, one could enter a new market with minimal risk since the entire flowsheet uses proven and existing technology, see brief process description (click here).

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Spent Pot Liner Recycling

This process uses equipment packages that are commercially available packages to produce anhydrous HF from spent pot liners.  This flowsheet is not complete; the furnace section needs to be added.  Either a Vortec, Ausmelt, or several other furnaces can be used.  Downside of this process is two fold: (1) the throughput has to be substantial to justify the capital costs, and (2) the aluminum industry is economically better off with SPL going into the ground.

Spent Pot Liner (SPL) Review

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Tantalum Reclamation

MV has a concept for  recovering tantalum/niobium from tantalum/niobium capacitors.  If interested, please contact us. Details are available under a confidentiality agreement.

Physical Processing of Tantalum Capacitors

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Chemical Processing of Tantalum

Chemical Processing of Tantalum Capacitors

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Secondary Copper Smelting

Refining of secondary (scrap) copper in the United States is pretty much a thing of the past.   Most of it is done in China.  Perhaps its only practical application is that very similar technology can be used to recover precious metals from electronic scrap.  The attached flowsheet just give the highlights of the pyrometallurgical side of the process.  Copper anodes, produced by this pyrometallurgical processing, are then processed by electrorefining to produce copper cathodes and precious metals slimes. 

Secondary Copper Smelter

 

Failure ...... Analysis......

 

Free Evaluation

Investigations

Root Cause Investigations Article

FA Questions

Industries

Failure Analysis Questionnaire

 ..Corrosion....

Under-Deposit Corrosion

SCC

Technical Briefing Denickelification

Failure Analysis of Cupro-Nickel Tube

Pitting

Crevice Corrosion

 

Metallurgical Viability, Inc. 

443-616-4339 or robert@metallurgicalviability.com

Serving Maryland, Delaware, Pennsylvania, New Jersey, New York, Virginia, West Virginia