gold ore separation magnets patent

Vintage Magnetic Separator for Tungsten Ore | Lamentations on ...

Jul 19, 2009 ... Magnetic Separator for Tungston Ore, Nederland Mining Museum ... As the main belt delivers a constant stream of ore to the magnets, the .... Patents for Researchers · Peter Zura's Two-Seventy-One Patent Blog · Promote the Progress · WIPO · WIPO ... Gold, with its cyanide/mercury isolation...

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This Machine May Largely Increase World's Gold ... - Elmer 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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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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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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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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liquids and their application in density separation - Hindawi ...

Dec 30, 1997 ... ular ferrofluids can be used for density separation of non-magnetic materials immersed in ..... towards the pole of the magnet as shown in the photograph in Fig. 3. .... gave rise to numerous patents for applications of this kind of liquid ..... separation process in ferrofluids to. separation of ores [38], of non-.

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List of Edison patents

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...

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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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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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Mining and Ore-Milling Patents - The Edison Papers

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

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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 ... such as gold and silver, says John DeYoung of the U.S. Geological Survey. ... They also developed a separator machine called the Rev3 that stands 75...

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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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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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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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Terminology Guide | Gold Mining Companies, Silver Mining ...

Alluvial deposit - clay, silt, sand, gravel, gold or other mineral or other ... An amalgam requires the separation of the mercury from the gold. ... Black sand magnet - a magnet used to remove black sand from concentrates. .... Patent claim - a mining claim that has had $500 of work done on it allows the claim holder to apply for...

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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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