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    2018 9 5ensp;0183;ensp;Lead is a chemical element with symbol Pb (from the Latin plumbum) and atomic number 82. It is a heavy metal that is denser than most common materials. Lead is soft and malleable, and has a relatively low melting point.When freshly cut, lead is silvery with a hint of blue; it tarnishes to a dull gray color when exposed to air. Lead

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    Lead Essential Chemical Industry

    2018 9 3ensp;0183;ensp;Lead is extracted from its ore by reduction with carbon. Considerable effort has to be made to separate the lead ore from zinc ores. In recent years, lead has become one of most highly recycled materials in general use.

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    Rocks amp; Minerals Definitions

    2017 3 29ensp;0183;ensp;Feldspar Feldspar refers to a group of minerals containing aluminum and silica.They all show good cleavage in two directions at about 90 degrees. The hardness is about 6 and the specific gravity between 2.5 2.8. Ferberite Ferberite has the formulae FeWO4 MnWO4.

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    lead Wiktionary

    2018 9 2ensp;0183;ensp;(transitive, printing, historical) To place leads between the lines of. to lead a page; leaded matter; Usage notes . Note carefully these three senses are verbs derived from the noun referring to the metallic element, and are unrelated to the heteronym defined below under Etymology 2.. Translations

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    Lead poisoning

    2018 9 5ensp;0183;ensp;Lead poisoning is a type of metal poisoning caused by lead in the body. The brain is the most sensitive. Symptoms may include abdominal pain, constipation, headaches, irritability, memory problems, inability to have children, and tingling in the hands and feet. It causes almost 10% of intellectual disability of otherwise unknown

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    Lead processing Britannica

    2018 9 8ensp;0183;ensp;Lead processing Lead processing, preparation of the ore for use in various products. Lead (Pb) is one of the oldest metals known, being one of seven metals used in the ancient world (the others are gold, silver, copper, iron, tin, and mercury). Its low melting point of 327 176;C (621 176;F), coupled with its easy

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    Basic Information about Lead Air Pollution

    2016 3 18ensp;0183;ensp;How does lead get in the air? Sources of lead emissions vary from one area to another. At the national level, major sources of lead in the air are ore and metals processing and piston engine aircraft operating on leaded aviation fuel.

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    How lead is made material, used,

    Lead is a dense, soft, low melting metal. It is an important component of batteries, and about 75% of the world's lead production is consumed by the battery industry.

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    Lead monoxide PbO PubChem

    Lead monoxide PbO or OPb CID 14827 structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities

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    Environmental Impacts of Mining and

    2018 9 5ensp;0183;ensp;In Zamfara, Nigeria a worker mines for gold. In 2010 hundreds of children in this area died from severe lead poisoning associated with gold ore processing.

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