Port Kembla Steelworks has spent $18 million on upgraded sinter machines that reduce the amount of coke need for the sintering process. The sintering process being getting the small particle of iron that were too small to go through processing and putting them through 1100-1300oC heat they will coalesce and form larger particles which improves resource efficiency. The upgrade involve using natural gas rather than coke to generate the heat in the
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Iron Man: The Real Hero In today’s society‚ the concern of people and laws are not about doing good but rather having the appearance of good. People no longer care about what they need to stand for‚ only that they look like they aren’t sitting down. In fact‚ men today are treated as outcasts when sticking up for a good thing when it doesn’t have a pleasant appearance. Men such as Thomas Jefferson‚ Leonidas‚ Joshua and Jesus‚ men that represent something greater than what meets the eye‚ are scarce
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Hypothesis: Rust is a reddish or yellowish-brown flaky coating of iron oxide that is formed on iron or steel by oxidation‚ especially in the presence of moisture. The rusting process is electrochemical‚ meaning it forms from a chemical reaction which takes place in a solution where there is an electron transfer between the electrode and the electrolyte or species in solution. In the case of rusting‚ the transfer of electrons from iron to oxygen begins the electrochemical process. Electrolytes accelerate
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1. Iron has a BCC crystal structure‚ an atomic radius of 0.124 nm‚ and an atomic weight of 55.85 g/mol. Compute its theoretical density. 2. Cite the primary differences between elastic‚ inelastic‚ and plastic deformation behaviors. 3. Of those metals listed in Table 1‚ (a) Which will experience the greatest percent reduction in area? Why? (b) Which is the strongest? Why? (c) Which is the stiffest? Why? Table 1 Yield Tensile Strain Fracture Elastic Strength Strength at Strength Modulus
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many protective paints and sealants don’t defend against rust. Salt water penetrates the protective layers to corrode the metal. Corrosion in iron Rust on iron is produced in sea water when iron (Fe) comes in contact with oxygen. The reason for this is because when water interacts with iron it conducts a small amount of current that flows through the iron. Salt increases the amount of ions in water allowing it to become a better conductor. The full chemical equation for this process theoretically
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Extractive Metallurgy Minerals are naturally occurring chemical substances in the earth’s crust obtainable by mining. Out of many minerals in which a metal may be found‚ only a few are viable to be used as sources of that metal. Such minerals are known as ores. Examples: Galena‚ PbS‚ etc. It is usually contaminated with earthly or undesired materials known as gangue. The extraction and isolation of metals from ores involve the following major steps: • Concentration of the ore‚ • Isolation of the
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aluminium. Iron is the second most common metal in the world and cheaper to extract than aluminium. It is extracted by using a blast furnace. Iron ores such as haematite contain iron oxide‚ the oxygen must be removed which then leaves the iron behind. This reaction is called a reduction reaction. Carbon is more reactiuve than iron so it can displace the iron and join with the oxide 2Fe2O3 + 3C → 4Fe + 3CO2 Above you can see the iron oxide has been separated into iron and carbon dioxide
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reduce the purchase of potato and green beans‚ so as to meet the conditions of the various constraints to achieve the goal of minimizing the purchase cost. Constraint conditions: Potatoes Green Beans Protein 1.5 g per 100 g → 1.5% 2 g per 100 g → 2% Iron 0.3 mg per 100 g → 0.3% 1.2 mg per 100 g → 1.2% Vitamin C 12 mg per 100 g → 12% 10 mg per 100 g → 10% Q 1) Determine the amount of potatoes and green beans Maria should purchase each week for the casserole to minimize the ingredient costs
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is 20m. And the diagonal members are all 23.6m The distance between the two sides (floor Beam) was 16m. Materials Today‚ bridges can be of the span‚ arch‚ or suspension type. Materials used throughout history include wood‚ masonry‚ cast iron‚ wrought iron‚ concrete‚ steel‚ reinforced concrete‚ alloy and silicon steel‚ pre-stressed concrete‚ carbon fibre‚ and aluminium. But since the experiment was to be performed in a small scale‚ Popsicle sticks where chosen to do the job. Then a non-toxic adhesive
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4.02 chemistry notes Law of Conservation of Mass One of the most important principles of chemistry is the law of conservation of mass. This law states that matter is neither created nor destroyed during an ordinary chemical reaction. In other words‚ all of the atoms that were present at the beginning of a reaction are present at the end of the reaction—they have just been rearranged to bond differently and form new substances. It is important that chemical equations represent this law by always
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