For ore dressing process‚ grinding is a continuation of the ore crushing process‚ and is a final finishing before ore sorting. Grinding the material evenly or not seriously affects the production efficiency of ball mill. Uneven ball mill’s discharging may be caused by the following two aspects: Firstly‚ the feeding grinding materials cause the uneven discharging. When water into the grinding material is high‚ it may cause the ball mill grinding "full" phenomenon. If the water into the grinding
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TREATMENT OF CORROSION Regardless of the type of corrosion or the metal involved‚ corrosion treatment requires three basic steps: 1. Remove as much of the corrosion as possible. 2. Neutralize any residual material. 3. Restore the protective surface film. CORROSION REMOVAL As previously discussed‚ the first step in corrosion control must be cleaning the surface. After the surface is completely clean and it is determined that corrosion does exist‚ the damage must be carefully assessed
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Flotation machine is a main device to realize the flotation process. The flotation of the ores is conducted according to the hydrophilicity of the minerals in the solution.The flotation machine developed by the Hongxing Heavy Industry has efficient flotation effect‚ which contributes to the good reputation. The following is the detailed explaination to flotation machine and its methods to sort out the ore mineral. Materials grinded in the wet-type mill are concocted with the basically single-dissociated
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HOMEWORK 6 EXTRUSION MME 2101 1. A cylindrical billet that is 100 mm long and 50 mm in diameter is reduced by direct (forward) extrusion to a 20 mm diameter. The die angle is 90. the flow curve for the work metal has a strength coefficient of 800 MPa. Determine (a) extrusion ratio‚ (b) true strain (homogeneous deformation)‚ (c) ram pressure‚ and (e) ram force. 2. A billet that is 75 mm long with diameter = 35 mm is direct extruded to a diameter of 20 mm. The extrusion die has a die angle =
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Name: Date of experiment: 04/02/12 Date of report: 04/03/12 Title: Oxidation – Reduction Activity Series Purpose: To determine relative oxidizing and reducing strengths of a series of metals and ions. Oxidation and reduction reaction occur simultaneously side by side. A reduction reaction occurs only if an oxidation reaction occurs and vise-versa. Electrons are given in oxidation while in reduction electrons are gained. Oxidizing agent is a chemical substance which has a large tendency to
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Sample Paper – 2012 Class – X Subject –Chemistry Chemical Equations and reactions Very Short Answer (1 marks each) Write the name and formula of compounds forms between a. Potassium and iodine ion .b.Sodium and sulphide ions . c. Aluminums and chloride ions 2. Why does milk sour when kept for a long time/ 3. What happen when hydrogen combine with oxygen in presence of electric current/ 4. Define electrolysis. 5. What is decomposition reaction? Give an
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Gains in China‚ India to boost Asia/Pacific demand China has shown strong growth in mining equipment demand‚ a direct result of investment in its local mining industry. For example‚ coal output nearly doubled from 2001 to 2006‚ reflecting the nation’s intense need for energy. China is also a major source of commodities such as iron ore and bauxite. Other major Asian markets for mining equipment include Australia and India. Like China‚ India has experienced a major growth in coal output. Australia
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This was an interesting project‚ which has potential in the future‚ but did not deliver desired results. The idea was to make a vertical axis wind turbine (VAWT) that instead of charging a battery‚ would deliver its power directly to an electrolysis apparatus to make hydrogen and oxygen gas. The reason for doing this would be to avoid the complications and expenses of inverters‚ batteries‚ and connecting the turbine to the grid. It would also make hydrogen gas which could power a car‚ a generator
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CHAPTER 5 DISCUSSION 5.1 Analysis of Trace Metal by FAAS Based on the table (4.3 and 4.4) the trace elements was detected by using the flame atomic absorption spectrophotometry analysis. The trace metal can be detected by the FAAS within 15 seconds to 30 seconds of each soil sample. Before the samples were analysis with the FAAS‚ the blank samples were run in the machine for each element that was being analyzed. Their absorbances were read. The mean of each blank was calculated and
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Metals and Rusting Iron Alquero Rollon Title “ The Effect of Various Metal Activity (Zinc (Zn)‚ Magnesium (Mg)‚ and Copper (Cu)) in the Color of Rainwater and Amount of Rust in the Iron Nail “ Hypothesis If the type of metal that has the highest activity will be used ‚ then there will be the least amount of rust found in the nail and the color of the rainwater would be the lightest. Independent Variable • Types of metals used in wrapping Title: “ The Effect of Various Metal Activity (Zinc
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