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nickel alloys Free Articles

The classification and identify of scrap nickel

Nickel is a precious metal, reserves are limited, nickel ore grade is very low, produce 1t of nickel needs 260 tons of nickel ore, its refining process is much more complex than the copper.

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Nickel application and market

Nickel is silver magnetic metal, mainly for the production of stainless steel, high temperature alloy steel, high performance special alloys and NI-based spray materials.

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Nickel materials

Nickel ore and mineral: in the modern technical and economic conditions, those can carry on the processing in industrial scale, extraction metal or raw product mineral aggregate called ore, those mineral which can useful for human beings called the useful minerals. But the content is too low, unfavorable to industrial scale process called gangue, gangue namely waste rock. So ore is consists of two components, useful minerals and gangue.

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The interpretation of nickel

Nickel is a silvery-white metal, the density is 8.9, melting point is 1455 , boiling point is 2915 °C. Nickel has a good mechanical strength, ductility and corrosion resistance.

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Production of electrolytic nickel powder

Electrolytic nickel powder is referred to use electrolytic method to prepare nickel powder, or the electrolysis-reduced nickel powder through hydrogen reduction annealing.

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Nickel is a metal with memory function

Nickel, the chemical symbol is Ni, atomic number is 28, with magnetic, is a transition metal. Nickel with ferromagnetic and scalability, can be electrically and thermally conductive.

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Related knowledge about nickle

As early as 235 BC, China has already began to use nickel minerals manufacturing coins, including 78% copper and about 20% nickel. In Europe, similar mineral found in 1094, but without the recovery of nickel from mineral, so called it "red nickel", also known as the "copper devil".

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Hazards of heavy metal nickel

The chemical properties of nickel is similar to iron and cobalt, can not react with water and air at room temperature, can resistant to alkaline corrosion; nickel can slowly dissolved in diluted hydrochloric acid, sulfuric acid and nitric acid, release hydrogen; nickel powder can absorb a considerable amount of hydrogen gas when heated; while heating can react violently with oxygen, sulfur, chlorine, bromine, etc..

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Use of nickel and other

The ancient Egyptian, Chinese and Babylonians had ever used siderite to produced rtifacts which contains high nickel. People in Yunnan produced the copper-nickel alloy containing high nickel, as called bu European "China Silver".

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Nickel and nickel alloys

Nickel powder mainly used in chemical catalyst, flux cored wire, magnetic materials, diamond tools. Based on nickel adding other elements called nickel alloy composition of the alloy.

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Nickel smelting

Nickel ore mining grade is generally containing 0.3 - 2% of nickel. Sulfide ore usually selecting copper-nickel mixed concentrate which containing 4 - 8% nickel by flotation.

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Nickel applied research

According to metal powder supplier, nickel having a high strength plasticity, excellent corrosion resistance, high temperature performance, and in the cold, hot state were having good pressure processing performance, and having ferromagnetic performance.

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Nickel stocks

Exploring the nickel mining industry in Canada and China's needs and shortages for stainless steel manufacturing.

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Nickel Allergy and Sterling Silver

Nickel allergy is one of the fastest growing allergies and accounts for more incidence of metal allergy than all other metals combined! One common thought is that sterling silver is a safe metal to wear, but is it? We explain why "yes" and "no" are both the right answer in this informative article. We explain what sterling silver is, why it is a good choice for nickel allergy sufferers and what to watch out for.

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China will bid farewell to carbonyl nickel powder imports

Carbonyl metallurgical processes is an important branch of metallurgy gasification. In recent years, nickel and cobalt production enterprises of China grasp its core technology through the technological innovation and break 100 years‘s foreign carbonylation metallurgy technology monopoly.

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