The microelectrical components and wiring in the phone are composed mainly of copper, gold, and silver. Tantalum is also used, being the main component of microcapacitors. A range of other elements, including platinum and palladium are also used, but detail on the specific applications of these was a little tricker to track down!

Copper is a chemical element with the symbol Cu and an atomic number of 29. The word copper and its symbol Cu come from the Latin word for Cyprus "Cuprum", where the Ancient Romans mined much of their copper.

However, these metals are very difficult to mine because it is unusual to find them in concentrations high enough for economical extraction. The most abundant rare earth elements are cerium, yttrium, lanthanum and neodymium [2].

Selenium, silver, tellurium, platinum, antimony and gold are the common elements present in the anode mud during the electrolytic refining of copper. As these metals are almost unreactive they are not affected during the purification method.

In the extraction of copper from its sulphide ore, the metal finally obtained by the reduction of cuprous oxide with Iron (II) sulphide. Carbon monoxide. Copper (I) sulphide. Sulphur dioxide

Beryllium Extraction Process Flowsheet. Much of the flotation technique developed in separation of feldspar from quartz and mica is applicable. In general, beryl will concentrate with the feldspar flotation product. Depressing the feldspar and reflotation of the beryl into a high grade marketable concentrate (at least % BeO) is the usual procedure.

Over 40 minerals and metals contained in seawater, their extraction likely to increase in the future ... ions or molecules of an element adhere to a surface). ... Over 40 minerals and metals ...

2 Manufacture of Copper . Extraction of copper from minerals • Involves a series of chemical, physical and electrochemical processes. • Depending on whether an ore is sulfide or oxide, the process follows one of two routes. Beneficiation

The copper sulfide reacts with air to make copper metal and sulfur dioxide. Some copper sulfide reacts with the copper(I) oxide to make copper and sulfur dioxide. This makes impure copper. Copper is made pure by electrolyzing it. A thin sheet of pure copper is put on the cathode and a thick sheet of impure copper is put on the anode.

Copper can be combined easily with other metals to make alloys. The first alloy produced was copper melted with tin to form bronze – a discovery so important that periods in history are called The Bronze Age. Much later came brass (copper and zinc), and – in the modern age – .

chemistry assignment help, Mercury halides, Potassium dichromate, Bio polymers and Biodegradable polymers, Carbon fiber, Chemicals in food, Compounds of xenon, Copper sulphate penta hydrate, Copper sulphate penta hydrate, Corrosion, Energy producing cells, Group 18 elements, Imperfections in solids, Indicators in acid base titration, Isomerisms, Lyophilic colloids and lyophobic colloids, Noble gases, .

How Gold Works. Leaching dissolves the gold out of the ore using a chemical solvent. The most common solvent is cyanide, which must be combined with oxygen in a process known as carboninpulp. As the cyanide and oxygen react chemically, gold in the pulp dissolves. When workers introduce small carbon grains to the tank,...

Jun 16, 2015· Why rareearth mining in the West is a bust Forget the hype. In the global rush for energycritical elements, our region can't compete.

(5) Tin, (ca) 1750BC First smelted in combination with copper around 3500 BC to produce bronze. The oldest artifacts date from around 2000 BC. (6) Iron,smelted, (ca) 1500BC The discovery of smelting around 3000 BC led to the start of the Iron Age around 1200 BC and the prominent use of .

Over 40 minerals and metals contained in seawater, their extraction likely to increase in the future. In similar fashion, some potassium chloride – also a salt – can be recovered from the sea on a commercial basis. However, this is only a minor source of the world's supply of potassium chloride.

How minerals are used in electronics: Copper: copper wires are used due to the metal's high electrical conductivity. Gold: used in wiring and as a coating for wiring or contact points in memory cards. Hexavalent Chromium: acts as a corrosion inhibitor and in hardening and corrosion protection in .

Copper surfaces exposed to air gradually tarnish to a dull, brownish color. If water and air are present, copper will slowly corrode to form the carbonate verdigris often seen on roofs and statues. Uses of Copper. As a result of its excellent electrical conductivity, copper's most common use is in electrical equipment such as wiring and motors.

Aqua regia is also used for gold and silver [11], but these metals are usually leached by thiourea or cyanide [13]. Palladium is leached by hydrochloric acid and sodium chlorate [7]. Biohydrometallurgy is a new, cleaner and one of the most promising eco friendly technologies.

The Sudbury basin is one of the richest ore deposits in the world. If you use a large amount of nickel dust it can cause skin or eye irritation, respiratory tract irritation, nausea, vomiting, or it can cause diarrhea. Chronic exposure to nickel can cause skin allergies, asthma, and liver damage etc.

Copper sulfate is a sulfate salt of copper. It is a potent emetic and is used as an antidote for poisoning by phosphorus. It also can be used to prevent the growth of algae. Cupric sulfate is a salt created by treating cupric oxide with sulfuric acid.

Methods of extraction. An ore is usually a compound of the metal mixed with impurities. When the metal is dug up, a method must be used to separate the metal from the rest of the ore. This is called extracting the metal. The method of extraction depends on how reactive the metal is. The more reactive the metal, the more difficult it is to extract from its compound.

The method used to extract copper from its ores depends on the nature of the ore. Sulphide ores such as chalcopyrite are converted to copper by a different method from silicate, carbonate or sulphate ores. Getting copper from chalcopyrite, CuFeS 2. Chalcopyrite (also known as copper pyrites) and similar sulphide ores are the commonest ores of copper.

The copper ore has to be dug from the ground. The ore contains some copper mineral and lot of waste rock. The copper mine in picture 4 produces 6 tonnes of copper from every 1000 tonnes of ore. Extraction. An ore has to be changed chemically into the metal. This process is called reduction.

Higharsenic copper concentrates. These products may contain up to 30% Cu and deleterious levels of As (517%), bismuth and antimony. In the PTPA plant, dust is acid leached to produce copper pregnant leach solution which is pumped 7km to Codelco's Chuquicamata mine, where it .

Aug 18, 2018· (iii) Silica in the extraction of copper. Answer: (i) Impure nickel reacts with CO to form tetracarbonyl nickel Ni(CO) 4 which on heating forms pure nickel. (ii) Zn acts as a .