Modern life's devices under China's grip? - CBS News

Mar 22, 2015 ... Constantine Karayannopoulos: We're physically on the ore body. .... He showed us how miniaturized rare earth magnets can be. ... Ed Richardson: When they bought the factory, they now had the patents. ... Gold Star Parents ... They have a final ore separation site purchased in Boca Rotan, LA U.S.A. What...

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Presenter - ARPA-E - Department of Energy

Dec 6, 2010 ... boron oxide (patent applied – Gomez ... Magnets. • Remelting in a controlled atmosphere furnace with ... Background - Typical Rare Earth Ore Processing ..... precipitation of gold by dissimilatory Fe(III)-reducing Bacteria.

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Rare-earth magnetic separation equipment and applications ...

... preconcentration of coarse size iron ores and magnesite, gold concentrate ... For the first magnetic roll intended for mineral separations, it was found that ... the other was developed by one of the authors (U.S. patent approved in August, 1996). ... DRUM SEPARATOR DEVELOPMENTS The conventional magnet circuit...

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Mining and Ore-Milling Patents - The Edison Papers

Mining and Ore-Milling Patents. The following list contains the 53...

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Patent US7909169 - Methods and systems for recovering alluvial ...

Mar 22, 2011 ... The feed can be separated into a plurality of separate fractions. ... Patent Drawing ... A method of mining alluvial gold deposits, comprising: .... 1 , ore collected from alluvium is loaded into the plant at a variable speed feed hopper 1. .... then a commercially available tramp steel magnet can be installed prior...

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Your Engineering Heritage: Thomas Edison's Legacy in Resource ...

Mar 2, 2015 ... ... needed for his electric light filament, as well as gold, from platinum ore tailings. ... Magnetic ore separation plant, Edison (now Ogdensburg), New Jersey, c. ... damp rock dust, choking the men, blocking the magnets, and clogging the screens. ... T. A. Edison, “Magnetic Ore Separator,” U.S. Patent 228,329.

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Patent US7909169 - Methods and systems for recovering alluvial ...

Mar 22, 2011 ... The feed can be separated into a plurality of separate fractions. ... Patent Drawing ... A method of mining alluvial gold deposits, comprising: .... 1 , ore collected from alluvium is loaded into the plant at a variable speed feed hopper 1. .... then a commercially available tramp steel magnet can be installed prior...

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China's Rare Earth Elements Industry: What Can the West Learn?

One method in processing gold ore, simply put, is to mix the ore with ..... “sintered” magnets patent and GM agreed to take the “rapidly solidified” magnets patent.

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Dry high gradient magnetic separator 0 20 mm

Feb 16, 2016 ... ... Magnet Drum Magnetic Separator for Iron Sand Magnetic separator ... Separator; proportion of dry aggregates 40 mm concrete Gold Ore Crusher. ... used in mining, construction and chemical industries Patent US8110566,...

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Patent US5927508 - Method and apparatus for recovering fine gold ...

Jul 27, 1999 ... Still another method of separating fine gold from ore is the use of a cast iron spiral fitted with magnets, as described in U.S. Pat. No. 5,205,414.

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Method of separating magnetic material

mineral separation, it is to be noted that sub stantially all ... magnets or have employed magnets in such a way as to ..... nection we are familiar with British Patent No. 224,924 to .... non-active portion contained 1.29 oz. gold per ton and the...

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Patent US5927508 - Method and apparatus for recovering fine gold ...

Jul 27, 1999 ... Still another method of separating fine gold from ore is the use of a cast iron spiral fitted with magnets, as described in U.S. Pat. No. 5,205,414.

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A Radical Solution for the Rare Earth Supply Crunch: Jack Lifton ...

Jul 9, 2013 ... Yet, when a REE miner advocates making REE permanent magnets, everybody applauds. ... The real problem in REE processing is separation—and that is the issue ... Most REE ore is 75% to 80% light rare earths (LREEs)—mostly ... niobium, yttrium, REEs and gold, has allowed it to minimize the risk of...

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This Machine May Largely Increase World's Gold ... - Elmer R. Gates

revolutionizing methods of separating gold from crushed quartz, and particularly from ... sized toy drum, inside of which is a powerful electro-magnet. The core of the ... iron ores make brittle pig iron, whereas magnetite affords a malleable iron. ... Professor Gates has just obtained a number of patents on still other processes...

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Mining and Ore-Milling Patents - The Edison Papers

Mining and Ore-Milling Patents. The following list contains the 53...

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Pumping Iron From Junked Rock - WSJ

Dec 10, 2012 ... A Minnesota startup is using magnetic technology to extract iron ore, a key ... A Minnesota Startup Uses Magnets to Extract the Key Ingredient in Steel ... that are capable in total of processing seven million tons of iron ore a year. ... such as gold and silver, says John DeYoung of the U.S. Geological Survey.

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List of new Magnetic Separator patents & technologies

A primary ore separation device used to remove magnetic particles from ... the device generally used upon mixed ore materials containing gold and other precious ... magnetic properties includes a plurality of permanent magnets arranged in a...

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This Machine May Largely Increase World's Gold ... - Elmer R. Gates

revolutionizing methods of separating gold from crushed quartz, and particularly from ... sized toy drum, inside of which is a powerful electro-magnet. The core of the ... iron ores make brittle pig iron, whereas magnetite affords a malleable iron. ... Professor Gates has just obtained a number of patents on still other processes...

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Black Gold Magnetic - Gold Mining - American Gold Miner

Time consuming efforts with hand magnets, normally results in less than minimum wage ... WE CALL IT THE BLACK GOLD MAGNETIC SEPARATOR™. Our unique patent pending magnetic system brings mining into the 21st century, with a...

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Lead and zinc magnetic separator

Feb 16, 2016 ... ... companies, EUROPAGES magnetic separators, Magnets, pg, 1 HOFFMANN system solut. ... magnetic separator for gold mining; High sufficient hematite ore rotary kiln ... zenith Mineral Processing And Equipments group located in ... and zinc slag material Magnetic separation, Patent US4295881, Process...

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The Rare-Earth Crisis - MIT Technology Review

Apr 19, 2011 ... That's one reason rare-earth magnets are found in nearly every ... The United States “lost expertise” when its mines closed and magnet manufacturing relocated to Asia ... Rebuilding: Processing equipment at Molycorp Minerals' mine in ... holds the necessary patents to make rare-earth alloys and magnets,...

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Patent US4565624 - Gravity--magnetic ore separators - Google ...

Jan 21, 1986 ... A gravity-magnetic ore separator for concentrating magnetic or weakly ... gravity separator such as a spiral, cone, pinched sluice, etc. with magnets ... the concentrate (e.g. wolframite, magnetite, tin, gold), tend to settle near the...

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Thomas Alva Edison – Boarische Wikipedia

Des is a Ibablick iba de amerikanischn Patent vom Edison. .... This device has large bipolar magnets and is highly inefficient. .... U.S. Patent 0.263.131 – Magnetic Ore-Separator; U.S. Patent 0.263.132 – Electro-Magnetic Railway ..... of Extracting Gold from Sulphide Ores; U.S. Patent 0.474.592 – Ore-Conveying Apparatus...

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Method of separating magnetic material

mineral separation, it is to be noted that sub stantially all ... magnets or have employed magnets in such a way as to ..... nection we are familiar with British Patent No. 224,924 to .... non-active portion contained 1.29 oz. gold per ton and the...

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Development of underground gravity gold processing plants - Gekko

The concept of processing gold ores on the surface is a traditional paradigm. ... In 1996, Sedimentary Holdings Pty Limited applied to patent the concept of ..... magnet removes tramp metal off the conveyor prior to ore delivery to the jaw crusher...

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75 Gold Recovery Methods - Scribd

Osterberg E-tower (Quick Gold Separator) – 1980s research in California. ... Mercury has been virtually eliminated in industrial placer gold mines in the USA, Canada, ..... This is treated with nitric acid (see patent for details) and the gold precipitated is ..... After being allowed to cool, a magnet removes the magnetite (Fe3O4).

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Using a magnet to separate plastics - TU Delft

A patent has been applied for. by Bruno van ... density between silver and gold by means of weighing and immersion in water to determine .... separating metals and metal ores, seems like a long time to have come up with such a simple...

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New Frontiers in Metals Recycling - Chemical Engineering

Apr 1, 2015 ... Typical industrial gold-stripping processes utilize cyanide or aqua regia .... “The process of separating and collecting the magnets safely from ... a plan for the dedicated recycling of the REM-containing mineral monazite, from...

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List of new Magnetic Separator patents & technologies

A primary ore separation device used to remove magnetic particles from ... the device generally used upon mixed ore materials containing gold and other precious ... magnetic properties includes a plurality of permanent magnets arranged in a...

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Patent US8097185 - Magnetic activated carbon particles for ...

Jan 17, 2012 ... Another common application of activated carbon is to extract gold ... ground ore, in order to produce an effective separation of the gold-loaded activated ..... This curve is characteristic of semipermanent or semihard magnets.

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Rare-earth magnetic separation equipment and applications ...

... preconcentration of coarse size iron ores and magnesite, gold concentrate ... For the first magnetic roll intended for mineral separations, it was found that ... the other was developed by one of the authors (U.S. patent approved in August, 1996). ... DRUM SEPARATOR DEVELOPMENTS The conventional magnet circuit...

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Patent US8097185 - Magnetic activated carbon particles for ...

Jan 17, 2012 ... Another common application of activated carbon is to extract gold ... ground ore, in order to produce an effective separation of the gold-loaded activated ..... This curve is characteristic of semipermanent or semihard magnets.

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Patent US4565624 - Gravity--magnetic ore separators - Google ...

Jan 21, 1986 ... A gravity-magnetic ore separator for concentrating magnetic or weakly ... gravity separator such as a spiral, cone, pinched sluice, etc. with magnets ... the concentrate (e.g. wolframite, magnetite, tin, gold), tend to settle near the...

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List of Edison patents - Wikipedia, the free encyclopedia

Below is a list of Edison patents. Thomas Edison was an inventor who accumulated 2,332 .... This device has large bipolar magnets and is highly inefficient. ... Magnetic Ore-Separator; U.S. Patent 0,263,132 – Electro-Magnetic Railway; U.S. ..... Gold from Sulphide Ores; U.S. Patent 0,474,592 – Ore-Conveying Apparatus...

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Using a magnet to separate plastics - TU Delft

A patent has been applied for. by Bruno van ... density between silver and gold by means of weighing and immersion in water to determine .... separating metals and metal ores, seems like a long time to have come up with such a simple...

Get Price