Good evening guys try to read this one and it will get your interest, so I want to share with you our lesson in chemistry today on my online class, our topic is about metallurgy, Have you heard this branch of science? Honestly its my first time to hear this branch too since Earth science, environmental science, biology, physics and chemistry is common to me. So let's get started what is Metallurgy ? based on my own understanding metallurgy is a branch of science that deals with metals, this is how metals are processed to become raw materials or even minerals get from mining and running in metallurgical process, the first step to remove metals from ores is by the way guys ores is what miners get from mining and it is not completed a mineral since it has lots of waste and other minerals added to it thats why it need process to remove and separate other minerals. The first process is preparation of ores in which minerals is separated from waste material such as soil, rocks and other waste materials in that mineral these waste materials are called gangue rememberthat guys, so how these process do? so it is separate with the process called floatation, you might asking what is floatation? so in a big container there was a water with detergent powder and oil also there was an air compressor so that bubbles will created, in this process waste materials with soak at the bottom of the container while the bubbles at the top cointains sulphide ore particals,
these bubbles contains different minerals and metals separated from waste materials, so it is carefully gathered by a machine since its volatile or easily compress in air, then next process is production of metals, in this process it undergoes the roasting in which the free metals undergo reduction process, so are you familiar in Oxidation-reduction process
in this process were just undergo in reduction process in which we separating greenhouse gases such as carbon dioxide and sulfur dioxide from metals. So let me tell you the truth guys, this type of processes is undergo inside the mining site thats why the greenhouse gases separated from metals is being released on atmosphere that added to global warming and it worsening the problem of our greenhouse gases thats, also what I said earlier about process of floatation it also harm our nature since the waste materials deposit on river banks that why fishes are being harmed by chemicals also, when humans go swimming at the river banks they will feel irritation in their skin because of harmful chemicals came from mining sites dumped in rivers. Now you know the dark secret of mining companies, then the last process is called purification of metals, there are 3 ways to do it, Distillation, Electrolysis and Zone Refining,
in Distillation it is a process in which metals is being separated from gases but it is very hard to do since these process is volatile or the gases can easily scattered in air, next is Electrolysis in which the impure metals is undergoes electrolysis, the impure metals is dissolve and becoming pure metal, last is Zone Refining it is usually used by mining companies since it is cheapest way to separate metals from waste materials, it needs only a heat coil and the impure metals will enter in that heat coil and automatically remove waste materials and just cut the edge since waste materials are there. Hope you learn from me guys sorry if my English is not good heheh
