Friday, October 28, 2011

Gold Bullion, price per gram Gold Bullion

Gold Bullion is most valuable precious metal - namely gold or silver. Gold bullion it comes from two main forms :- Gold bullion bars, and Gold bullion coins. What makes it gold bullion is simply that its value derives entirely from its precious metal content. Gold bullion has no artistic component in its value.Gold bullion coins trade quite close to the world gold price.The most traditional way of investing in gold is by buying gold bullion or gold bars. In some countries, like Canada, Argentina, Austria, Liechtenstein and Switzerland, these can easily be bought or sold at the major banks. Alternatively, there are bullion dealers that provide the same service. Bars are available in various sizes.

Price per gram Gold Bullion can we get from https://www.ukbullion.co.uk. Price on this site is Update per day. Gold bullion bars with weigh anything from a few grams upwards. 1kg and 100 oz (~3kg) bars are sometimes accepted by participants in professional bullion markets in Zurich and New York. There is usually a premium on those locations, because London is the world's main physical bullion marketplace. 

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Thursday, September 15, 2011

Palladium Weißgold

Palladium weißgold or palladium white gold is a trends on german today.What is very important to us and we absolutely want to be the first to point out is that there is no "natural" white gold. The yellow color of gold is changed by the addition of other metals. The higher e.g. the copper content, the more intense is the red gold. That's how the different colors of gold. 

Now you can also imagine, that of yellow gold can never create a true white gold. For the production of white gold are the white gold of different metals, such as Silver, palladium, manganese, nickel, etc. added. These metals beyond the gold color and the color is more or less one knows.So there are different white gold tones, as this depends on the composition of metals. Silver e.g. While making the white light, but goes on to yellow. Particular care should be taken that no nickel is used as filler metal, because there are still vendors is that comply with the limits of EU rules, are allowed to sell their wedding rings as a nickel-free, but use unfortunately a small percentage of nickel (cost reasons) . 

White gold or Palladium or Palladium weißgold? 

This is a question we are with our choice of rings. According to White gold jewelry is slightly yellowish with time, when the rhodium wears layer. Supposedly can go pretty fast. His alternative would be just palladium, wherein the material is slightly darker than white gold and a rhodium layer has. If worn, the rings would be a little darker. Have you stood in front of such a decision and how did you decide? You may have experience as it is with the wear layer of rhodium? I can well imagine that actually not quite right, that would be really annoying ...

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Friday, September 09, 2011

Steel

Steel is the name commonly given in metallurgical engineering from an alloy of iron with a variable amount of carbon between 0.1 and 2.1% by weight of composition, but typically these values ​​are between 0, 2% and 0.3%. If the alloy has a higher carbon concentration to 2.0% occur foundries, as opposed to steel, are brittle and it is possible to forge but must be molded. Not to be confused with iron steel, which is a relatively hard and tough metal with atomic diameter (dA) of 2.48 Å, with melting temperature of 1,535 ° C and boiling point 2740 ° C. In turn, carbon is a nonmetal smaller diameter (dA = 1.54 Å), soft and fragile in most of its allotropic forms (except diamond). The diffusion of this element in the crystal structure of the former is achieved by the difference in atomic diameters. 

The steel keeps the features of iron metal in its pure state, but the addition of carbon and other elements both metallic and nonmetallic improves their physical and chemical properties. There are many types of steel depending on the alloying elements or to be present. The definition in the percentage of carbon corresponds to carbon steels, where this is not the only alloying metal, or are there others but in lower concentrations. Other specific compositions are given specific names depending on many variables such as the elements that predominate in their composition (silicon steel), its susceptibility to certain treatments (hardened steel), some feature enhanced (stainless steel) and even depending on its use (structural steel). 

Usually these iron alloys are included under the generic designation of special steels, why here has adopted the definition of common or "carbon" in addition to being the first made and more employees, 1 formed the basis for others. This wide variety of steel was steel Siemens define as "an iron compound and another substance that increases resistance" .2 The two main components of steel are found in abundance in nature, favoring large-scale production. Disponibilidad3 this variety makes it suitable for many uses such as construction machinery, tools, buildings and public works, contributing to the technological development of societies industrializadas.4 Yet there are those who do not use steel (such as aircraft construction) because of its density (7850 kg / m³ density compared to the 2,700 kg / m³ of aluminum, for example) this is problem who do not use steel.

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Thursday, September 08, 2011

Mining Companies Chile to the Top Ten World Gold Production

With investments of over U.S. $ 10,000 million, before the end of the decade would place our country among the seven or eight largest producers of metal. A growing demand and an attractive prospect in the price of an ounce of gold in the world, worth over U.S. $ 1,508, are driving large investments in this metal. Currently, Chile is ranked 17 worldwide producers, but it is estimated that by the end of the decade should be located between the seventh and eighth, as there are in the pipeline, only the region of Atacama, projects over U.S. $ 10,000 million. Sonami President, Alberto Salas, said that today "the production of the yellow metal is 50% of the byproduct of copper mining. But now with investments in specific projects and own gold mining growth in this sector, we can project the 2018 production of 120 metric tons (MT) per year, three times higher than today. " More optimistic is the Director of Studies and Public Policy (s) Cochilco, Vincent Perez, who estimated that "by 2016 the total gold production in Chile has the potential to triple the current total of more than 130 TM, showing a compound growth annual average of 18.3% and could be in eighth place worldwide. " The director of Cesco, Juan Carlos Guajardo, confirms the interesting picture. "The structural weakness of the dollar and the inflation outlook in several regions of the world, reinforcing the role of gold as a safe haven asset in the financial world. In addition, central banks have resumed purchases of gold as a reserve instrument, considering the loss of strength of the dollar. " MINING COMPANIES Barrick Gold The Canadian mining company, whose president is Peter Munk, and the representative in South America, Igor Gonzalez, has two projects in Chile, Pascua-Lama and Cerro Casale, both located in the Atacama Region. The first site, which will come on stream in 2013, is located 75% in Chilean territory (Easter) and 25% on the Argentine side (Lama). The estimated production is between 750,000 and 800,000 ounces of gold during its first five years of operation. To exploit mineral reserves are 391 TM, a total of 18 million ounces of gold, 689 million ounces of silver and 256,000 tons of copper. It is currently in the engineering Meanwhile, Cerro Casale is located inside of Copiapo, in the Salar de Maricunga. It is estimated that the project includes proven and probable mineral reserves of 668.5 MT grading 0.53 0.22% gold and copper. This mineral, the initial investment would be about U.S. $ 5,200 million and could produce about 1.1 million ounces of gold per year and 115,000 tons of copper over a lifetime of 17 years. Goldcorp Goldcorp is a Canadian owned company, whose chairman is Charles Jeannes since 2008. Opera in Chile with the El Morro project (70%), through a joint venture with New Gold (30%), and expect it to come into operation during 2015. The project, located 84 km east of Vallenar and 160 km southeast of Copiapo, Atacama Region, has focused in recent years in the La Fortuna deposit. It is estimated that El Morro has resources of 458 MT of ore grading 0.58% copper and 0.47 grams per tonne gold. Currently, the farm is expected to be held open pit and projected production of 650,000 tons per day of concentrate equivalent to 300,000 ounces of gold a year, with a lifespan of 14 years. The project, therefore will innovate with the installation of a desalination plant in the area Totoral, which have a capacity of 740 liters per second. Kinross Since 2005, the president of the Canadian company Kinross is Tye W. Burt. Until now the firm participates in the operation of two projects, and Golden Mantles Maricunga, which in 2010 obtained a production of 300,000 ounces of gold equivalent, and this year estimate, according to executive vice president, José Tomás Letelier, exceed 400,000 ounces gold. For 2014, expected to start operation of the project Lobo-Marte, which includes an investment of U.S. $ 575 million and expect to reach the 11 tons of gold. This site is located between the mines Maricunga and La Coipa, Atacama Region, and production is projected 350,000 to 400,000 tpa of gold equivalent. Maricunga reserves have a lifespan until 2024, meanwhile, Blancos, 2015, which aim to extend beyond that date with another project. The firm also has a joint venture with Grupo Errazuriz, in Mantles of Gold, since 2009, and Codelco mine Puren, since 2004, all in the Atacama region. Kinross expected gold production in the project Lobo-Marte could start from the last quarter of 2013 and mid 2014.

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Monday, September 05, 2011

Mining Guide : Learn to Know About Mining

Mining guide : First think is we must Learn about what is mining?Simple answer ; Mining is the process of extracting minerals and various materials from the earth. Manganese, tantalum, cassiterite, copper, tin, nickel, bauxite (aluminum ore), iron ore, gold, silver, and diamonds are just some materials of what is mined. and Why Mine?We know Mining is a BIG money making business. Not only do mining companies prosper, but governments also make money from revenues. Workers also receive income and benefits. What is Principle of Mine? Mine is valuation of Manganese, tantalum, cassiterite, copper, tin, nickel, bauxite (aluminum ore), iron ore, gold, silver, and diamonds. What are the minerals and metals important used for?Minerals and metals are very valuable commodities. For example, GOLD is a important material for jewelry business. Gold It is also used to electronic industrial. Other example is Tantalum, Tantalum is used in cell phones, pagers, and lap-tops. Cooper and tin are used to make pipes, cookware,. and.... etc. Mine Valuation ?;is Calculation of quantities of ore and classification of ore in sight.As mines are opened by levels, rises, etc., through the ore, an extension of these workings has the effect of dividing it into "blocks." The obvious procedure in determining tonnages is to calculate the volume and value of each block separately. Prospective value ?is Extension in depth,origin and structural character of the deposit,secondary enrichment,development in neighboring mines;depth of exhaustion. Large scale mining versus small scale mining?1.Large scale mining usually involves a company with many employees. The company mines at one or two large sites and usually stays until the mineral or metal is completely excavated. 2.Small scale mining usually involves a small group of nomadic men. They travel together and look for sites which they think will yield gold or another valuable metal or mineral. Where does mining occur?Mining occurs in many places around the world, including the U.S. In South America, mining is particularly active in the Amazonia region, Guyana, Suriname, and other South American countries. In Central Africa, mining devastated a National Park called Kahuzi-Biega in the eastern Democratic Republic of Congo (DRC). South Africa is also very well known for mining diamonds. Mining also occurs in Indonesia and other S.E. Asian countries. Price of Metals?is recoverable % of the gross assay value or cost of production.Unfortunately for the mining engineer, not only has he to weigh the amount of risk inherent in calculations involved in the mine itself, but also that due to fluctuations in the value of metals.

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Thursday, August 04, 2011

Types of Stainless Steel

Types of stainless steel is the large group.The large group of stainless steels can be divided into two groups Austenitic and Ferritic, the Ferritic group being split again into two groups,Martensitic and Ferritic. We know Stainless steel is a name given to a group of steel alloys that contain more than 12% Chromium. Chromium has a high affinity for oxygen and forms a stable oxide film on the surface of the stainless steel. This film is called the passive oxide layer and forms instantaneously in ordinary atmospheres.The film is self healing and rebuilds when it has been removed. It is this film that gives Stainless Steel its corrosion resistance.

AUSTENITIC GRADES
This group of stainless steels contains 17 – 25% Chromium and 8 – 20% Nickel with various additional elements to achieve the desired properties. In the fully annealed condition Austenitic stainless steels exhibit a useful range of mechanical and physical properties.Mechanical properties can be increased with cold working. Welding of this group must be caried out with correct methods but the low Carbon content results in fewer problems than with the Ferritic and Martensitic grades. Normally these stainless steels are non-magnetic but will become slightly magnetic when cold worked. Basic grades of Austenitic stainless steels are listed below.
Type AUSTENITIC GRADES : 303,304,304L,310S,316,316L,321.


MARTENSITIC GRADES
This group contains a 12% - 14% Chromium and 0.08% - 2.00% Carbon. The high Carbon content of the martensitic stainless steels allows them to respond well to heat treatment to give various mechanical strengths such as hardness 500004574. However, the Carbon is detrimental when welding and care must be taken. In the heat treated condition, this group of stainless steels show a useful combination of corrosion resistance and mechanical properties that qualify them for a wide range of application.
Type MARTENSITIC GRADES : 409,410,420,431

FERRITIC GRADES
This group contains a minimum of 17% Chromium and 0.08 – 2.00% Carbon. The increase in Chromium imparts increased resistance to corrosion at elevated temperature, however the lack of mechanical properties due to the fact that it cannot be heat treated, limits its applications. Like Martensitics they are magnetic and the welding of the group should be carried out with care.
Type FERRITIC GRADES : 430

DUPLEX / SUPER DUPLEX GRADES
This group of stainless steel has an annealed structure which typically consists of equal parts of austenite and ferrite. These steels have 18 – 29% chromium, 3 – 8% nickel and various other elements, particularly nitrogen and molybdenum. This group of steels has several advantages over austenitic steels. The duplex grades are highly resistant to chloride stress corrosion cracking, they have excellent pitting and crevice corrosion resistance and have about twice the yield strength of the common austenitic grades.
Type SUPER DUPLEX GRADE : 2205,S32750.

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Stainless Steel

Stainless steel in metalurgy know as inox steel or inox from French word "inoxydable" is mean as a steel alloy with a minimum of 10.5 or 11% chromium content by mass. Stainless steel doesn't stain as ordinary steel, but it is not stain-proof.It is named corrosion-resistant steel when the alloy type and grade are not detailed, particularly in the aviation industry. There are different grades and surface finishes of stainless steel to suit the environment the alloy must endure. Stainless steel is used where both the properties of steel and resistance to corrosion are required.

What about Austenitic stainless? Austenitic stainless is one type of stainless steel. Austenitic stainless are iron-chromium-nickel alloys which are hardenable only by cold working. Nickel is the important element varied within the alloys of this class while carbon is kept to low levels. The nickel content about 4% to 22% - higher values of nickel are added to increase to ductility of the metal. When chromium is increased to raise the corrosion resistance of the metal, nickel must also be increased to maintain the austenitic structure. These alloys are slightly magnetic in the cold-worked condition, but are essentially non-magnetic in the annealed condition in which they are most often used. The austenitic types feature adaptability to cold forming, ease of welding, high-temperature service, and, in general, the highest corrosion resistance.

The other stainless steel type is MARTENSITIC. This group contains a 12% - 14% Chromium and 0.08% - 2.00% Carbon.The high Carbon content of the martensitic stainless steels allows them to respond well to heat treatment to give various mechanical strengths such as hardness 500004574. However, the Carbon is detrimental when welding and care must be taken. In the heat treated condition, this group of stainless steels show a useful combination of corrosion resistance and mechanical properties that qualify them for a wide range of application.

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Sunday, July 31, 2011

What is Mining?

What is mining?the answer to the question what is mining ; mining is to dig under to gain access,to get (as ore) from the earth, to the extract from a source, to burrow beneath the surface,to dig into for ore or metal, to process for obtaining a natural constituent.As the definition implies,what is mining? mining is the process of extracting metal and mineral ores from the Earth. Mining is the biggest Business today and make a lot of money.Mining work is to extraction of minerals and metals from earth. Manganese, tantalum, cassiterite, copper, tin, nickel, bauxite (aluminum ore), iron ore, gold, silver, and diamonds are just some examples of what is mined. Not only do mining companies prosper, but governments also make money from revenues. Workers also receive income and benefits.

Minerals

What are the minerals?The chemical elements of the periodic table are the building blocks of minerals.There are about 3000 recognized minerals.Some minerals are composed entirely of one chemical element like gold,silver, mercury or copper. They are called native elements. Others are combinations of elements. Quartz for instance is a combination of silicon and oxygen, SiO2. Some minerals traditionally used by Aboriginal peoples include topaz, flint (a form of quartz) and copper. These days silver, gold and other minerals are used by artists to create jewelry and other objects.

What we get from mining?

Gold, silver, aluminum, salt, diamonds, potash, sulfur, copper and uranium are just a few of the minerals which we can extract from the Earth.  From their processing we get an almost countless number of  products which we use in our lives everyday – stoves, snowmobiles, jewelry, computers, satellites, hunting equipment, cars, utensils, tools, trucks, art work and even clothing.

Where is mining site?

Mining site there are many places around the world, including the U.S. In South America, mining is particularly active in the Amazonia region, Guyana, Suriname, and other South American countries. In Central Africa, mining devastated a National Park called Kahuzi-Biega in the eastern Democratic Republic of Congo (DRC). South Africa is also very well known for mining diamonds. The BIG Mining site in Asian there is in Indonesia and other South East Asian countries.

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