what is magnet and its ores and how it is manufactured

How long does a permanent magnet remain a magnet?

How long does a permanent magnet remain a magnet?

A permanent magnet has a permanent orientation of the magnetic moments in a specific vectorially additive direction depending on small crystal domains. To change, be demagnetized, the magnetic moments have to be randomized by either an external magnetic field .

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[Ar]4s 3d USGS Mineral Resources Program .

[Ar]4s 3d USGS Mineral Resources Program .

manganese minerals. Manganese ores generally contain 25 to 45 percent manganese, mostly in oxide (or hydroxide) and carbonate minerals. Such ores are widespread, but most of the world's supply is from a small number of manganese mining districts. Most manganese ores are extensive layers of

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GRYB XtremGrip Scrap Magnet

GRYB XtremGrip Scrap Magnet

The XTREMGRIP scrap magnet is ideal for intensive loading and unloading of scrap metal, for handling works, for steelworks as well as for port operations. They are also designed and manufactured for the most difficult operations. Its deep field and robust design makes these magnets very .

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How is metal made? | Yahoo Answers

How is metal made? | Yahoo Answers

May 15, 2008· Most metals, however, are found in nature in chemical combination with other elements as compounds in "ores". Getting the metal out of the ore involves a great many different processes, depending on the metal. Some are easy, and simply require heating under the right conditions. Others are harder, and require heating with reducing agents.

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Nickel processing |

Nickel processing |

From sulfide ores. Because the conversion of nickel sulfide directly to metal would require an extremely high temperature (in excess of 1,600 °C [2,910 °F]), the removal of sulfur at this stage of the converting process is controlled in order to produce the 70–75 percent nickel matte, which has a lower melting point.

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Magnet system and magnetic field  JINST

Magnet system and magnetic field JINST

Magnet system and magnetic field ... The coil was manufactured and pretested in the factory [10], came to CERN for integration in the LAr cryostat, underwent an onsurface acceptance test in its semifinal configuration [11], and ... The magnet current is raised in steps up to its nominal value of kA and then finally up to kA ...

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Neodymium Magnet and Attraction Towards It

Neodymium Magnet and Attraction Towards It

At that time there was a great need to find a suitable cost effective replacement for SmCo permanent magnets because of its rising costs. Today the these magnets are manufactured via two production forms sintered (powdered) and bonded magnet process.

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How Is Silver Made? |

How Is Silver Made? |

It is usually separated from its ores using a flotation process and then purified by smelting. Obtaining silver from copper involves electrolytic refining and smelting. Silver can be obtained from lead ores using the Parkes process, which involves zinctreated molten lead.

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Platinum: The mineral native Platinum information and pictures

Platinum: The mineral native Platinum information and pictures

The Mineral platinum. Natural Platinum is fairly impure. It is always associated with small amounts of other element s such as iron, gold, copper, and nickel, and may also contain the rare metals iridium, osmium, rhodium, and palladium. These impurities can lower its specific gravity to as much as 14, whereas pure elemental platinum is

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12 Reliable Methods: How to Test Silver for Authenticity

12 Reliable Methods: How to Test Silver for Authenticity

Use a neodymium magnet. Tilt object 45 degrees, place magnet on the tilted surface. If it slides down, it is real. If it sticks, it's fake because real silver is nonmagnetic. Get two ice cubes. Place one on top of the silver item and the ice cube on a regular pan.

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Flexible Magnetic Products. 100% Made in the USA

Flexible Magnetic Products. 100% Made in the USA

Low cost, high quality flexible magnetic products that are 100% Made in the USA. Fast shipping. High quality craft, dry erase, adhesive and office magnets.

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How Is Aluminum Extracted From Its Ore? |

How Is Aluminum Extracted From Its Ore? |

Aluminum is extracted from bauxite ore by way of the Bayer process. This requires a great deal of electricity; consequently, a large amount of aluminum is processed in Iceland, which gets its electricity through geothermal energy. To extract aluminum, the bauxite ore is first crushed, then mixed with lime, hot water and soda ash.

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A MAGNET IS NOT

A MAGNET IS NOT "JUST A MAGNET"

magnet housing compared to a cheaper mild steel housing. The mild steel will become magnetized when placed around or near a magnetic field and interfere with the magnetic field created by the internal magnets resulting in a reduction of the magnets ability to do its job. MAGNET MATERIAL RATING

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Neodymium Magnet and Attraction Towards It – magnetmanila4

Neodymium Magnet and Attraction Towards It – magnetmanila4

Apr 14, 2016· The remanence the way of strength of magnetic field of an magnet is high for any sintered magnet. The Curie temperature (named after Pierre Currie, famous French physicist and husband of Marie Curie) will be the temperature at which the magnet loses its magnetism is same either way forms of neodymium magnets (approx 310 to 400o C).

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How to Identify Iron Ore | Our Pastimes

How to Identify Iron Ore | Our Pastimes

The earth's core is made up of iron ore. Early man made tools and weapons from the iron ore they extracted from the earth and refined. Only meteorites carry pure iron ore, and the deposits locked away within the Earth require mining and refining.

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Permanent Magnet Motor Market Size, Share, and Trends

Permanent Magnet Motor Market Size, Share, and Trends

Permanent Magnet Motor Market Overview: Global Permanent Magnet Motor Market is expected to garner billion by 2020, registering a CAGR of % during the forecast period . Permanent magnet is an object made up of ferromagnetic material, which has magnetic properties and creates its own magnetic field.

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