Cone Crusher is widely used in mining industry‚ metallurgical industry‚ construction industry‚ road building industry‚ chemical industry and silicate industry‚ suitable for crushing hard and medium hard ore and rock‚ such as iron ore‚ limestone‚ copper ore‚ quartz‚ granite‚ sandstone. Hongxing mechanical engineers to share the use and maintenance of the process of hydraulic cone crusher should be noted that some of the issues:Hydraulic Cone Crusher Do not loads starting‚ so as not to cause an accident
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UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certificate of Secondary Education *1144188971* COMBINED SCIENCE Paper 2 (Core) 0653/21 October/November 2010 1 hour 15 minutes Candidates answer on the Question Paper. No Additional Materials are required. READ THESE INSTRUCTIONS FIRST Write your Centre number‚ candidate number and name on all the work you hand in. Write in dark blue or black pen. You may use a soft pencil for any diagrams‚ graphs‚ tables or rough working
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Metallurgy: The Bronze Age Metallurgy was first practiced in Asia Minor a little after 4000 B.C.E‚ afforded individuals greater control over nature by providing harder‚ more efficient tools and weapons. At first copper ore was taken from the surface‚ but metalsmiths mined and smelted various ores to produce bronze. The technology of bronze-casting spread from Mesopotamia throughout the ancient world. In India‚ advanced metalwork techniques were used to produce jewelry‚ musical instruments‚ horse
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will be based on these only. (1‚ 2‚ 3‚ 12‚ 13‚ 18‚ 19‚ 21‚ 22‚ 29‚ 31‚ 32‚ 44) 1. A proton beam in an accelerator carries a current of 125 A. If the beam is incident on a target‚ how many protons strike the target in a period of 23.0 s? 2. A copper wire has a circular cross section with a radius of 1.25 mm. (a) If the wire carries a current of 3.70 A‚ find the drift speed of the electrons in this wire. 3. An aluminum wire having a cross-sectional area equal to 4.00 10–6 m2 carries a current
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Zinc‚ copper‚ and lead are three of the most common heavy metals released from road travel‚ accounting for at least 90 of the total metals in road runoff. Lead concentrations‚ however‚ consistently have been decreasing since leaded gasoline was discontinued. Smaller amounts of many other metals‚ such as nickel and cadmium‚ are also found in road runoff and exhaust. About half of the zinc and copper contribution to the environment from urbanization is from automobiles. Brakes release copper‚ while
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coating a metal object with a thin layer of another metal by means of electrolysis. 2) What is Copper Plating? Copper plating is a coating of copper metal on another material‚ often other metals. Plating is designed to increase durability‚ strength‚ or visual appeal‚ and copper plating specifically is often used to improve heat and electrical conductivity. 3) What are the uses of electro-plating/copper plating? Electroplating is used to give metal objects a better appearance or to protect them
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------------------------------------------------- Electroplating Electroplating is a plating process in which metal ions in a solution are moved by an electric field to coat an electrode. The process uses electrical current to reduce cations of a desired material from a solution and coat a conductive object with a thin layer of the material‚ such as a metal. Electroplating is primarily used for depositing a layer of material to bestow a desired property (e.g.‚ abrasion and wear resistance‚ corrosion protection
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Chalcopyrite was the mineral upon which Bronze Age civilizations were built. Within the last century‚ it also became the mineral foundation for our modern electrical age. Our primary source of copper‚ chalcopyrite’s name comes from the Greek words ‘chalkos’ and ‘pyrites’‚ which respectively mean ‘copper’ and ‘striking fire’. With its metallic luster and bright golden color‚ chalcopyrite can fool people into thinking it is gold. It is one of two minerals‚ the other being pyrite‚ that are commonly
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Finding the percentage of copper in brass alloy. Introduction This is an investigation to find out how much copper is in a brass alloy. The brass alloy we are experimenting on is called Muntz Metal. Muntz metal is 60% copper‚ 40% zinc and a hint of copper [http://en.wikipedia.org/wiki/Muntz_metal] (accessed 4/10/12). Muntz metal was developed as an alternative to expensive‚ heavy copper. It is comprised of about 60% copper and about 40% zinc‚ with a small amount of iron. The finished product actually
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loops and the current intensity‚ affect the strength of the magnetic field of an electromagnet. Materials: Power pack‚ 4 connecting wires‚ switch‚ ammeter‚ paperclips‚ iron nail‚ copper wire. PART A: TESTING THE NUMBER OF LOOPS Procedure: 1. Create an electromagnet made of an iron nail with 5 loops of copper wire around it. 2. Draw a circuit diagram including the components in the materials list above‚ except the paperclips. 3. Build the circuit you drew in step 2‚ making sure all
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