1) Define the terms mineral, ore, yield, mining and extraction. Mineral: A natural occurring inorganic substance with a definite chemical composition and a regular internal structure (Most are crystals like salt and diamond). Ore: A natural occurring mineral from which a valuable substance, such as a metal, can be extracted. Examples include brass and bronze. Yield: Amount of product obtained in a chemical reaction. Mining: The process of extracting ores and minerals from the ground. Extraction: The separation of a desired substance when mixed with others. 2) Natural resources can be either renewable or non-renewable. Explain why ores are non-renewable resources. Ores contain minerals, and minerals are non-renewable resources as they …show more content…
The separate steps all associated with extraction add to the final cost. These steps are much more significant to the steps associated with recycling. Due to the little use of energy, cost is majorly reduced. Aluminium is one of the cheapest things to recycle too and is able to be sold for a fairly profitable price to the industry if recycled as it is bought for a great amount of money from those willing to recycle goods such as aluminium cans. Energy Expenditure All of the steps for extraction require a large amount of energy that can be avoided by recycling. Uses a small amount of energy to recycle the Aluminium. In 2007, United States, 54 billion aluminium cans were recycled, saving 15 million barrels of crude oil that would have otherwise been used as energy. 6) Steps to recycle Aluminium: 1. The aluminium is compressed in large blocks called bales. These bales are loaded onto a conveyor and then taken to a shredder. 2. The shredder the cuts the bales into smaller pieces about the size of a small coin so that it is easily cleaned of …show more content…
Aluminium is in approximately 8.1% of the earths crust and therefore is very abundant. The extraction process of aluminium is high as it is difficult to extract and uses a great deal of energy, around 621 billion kilowatt hours in 2010, but its demand is very high and in 2010 there was 41.4 million tonnes of aluminium extracted. 9) Step 1 Physical separation: Chalcopyrite (CuFeS2) is found inside a rock and that rock is crushed into a ball mill. The ore is then mixed with water and other chemicals to make the copper sulphide minerals hydrophobic. Air is forced through the slurry and the hydrophobic sulphide particles are carried to the surface where they are removed. This is froth floatation and the product is called copper concentrate. Step 2 Smelting: Silica (SiO2) and limestone (CaCO3) are mixed with the copper concentrate and smelted to form copper matte. Step 3 Conversion to blister: The matte produced is 70% copper, primarily as copper sulfide mixed with iron sulfide. The sulfur is then removed by blowing air through molten matte. This removes the sulfur as sulfur dioxide: 2CuS(s) + 3O2(g) 2CuO(s) +
3.1 1. Minerals have a few distinguishing characteristics that differ them from other materials. One of the biggest characteristic that minerals poses is they are naturally occurring, inorganic element or compound. Another is the hardness of the mineral. Minerals also have the characteristics of very different cleavage shapes.
Trees, minerals, water, and animals are all examples of natural resources. Without them, we would have no food, clothing, or shelter. “ (Natural Resources Helps Communities Grow, 1) Subsequently natural resources should be protected because it can help the economy of Honduras. “ Saudi Arabia is in the southwestern part of the continent of Asia. This region of the world produces lots of oil.
Making byproducts using recycled materials is cheaper. New aluminum costs twice as much as using recycled aluminum. This is because 90 percent more energy is needed to extract aluminum from its raw form. Moreover, products that are made from recycled materials can also be purchased at a cheaper price. It is unlikely government programs on recycling will go away because of their popularity.
Coal mining in the U.S. provides many jobs and is the backbone of many incomes. Longwall coal mining is one form of underground coal mining. In fact, it is the most productive form, yet the safest. The machine used is highly powerful and efficient. Pros for this type of mining are followed by cons as well.
There is not necessarily a right or wrong answer, but if you choose to believe the resources that we throw away every day to be valuable, then your actions will be based on that principle. -Recycling Is Garbage by John
These are the effects of recycling: Cleaner world No overflowing landfills No more animals getting
Natural resources such as minerals and precious metals are commodities, sold by those who own land in which they are mined or extracted. Gold a precious metal that has held high monetary value for centuries and has been the means of attaining great wealth and forming great empires. Water, a natural resource has a very different value, that of sustaining life. It is a commodity like other natural resources, to the landowner, in which it is sourced. Water sources are managed by individuals and by the state (government).
By incineration , some environment friendly hazardous organic substances in the e-waste are converted into less hazardous substances. Besides all, it is a problematic process because they are very dangerous to the living beings. The incinerators contribute to the emission of cadmium and mercury, which are detrimental to human health. Incinerators causes instability in the ecosystem; the overwhelming metals are transformed to slag and fumes deposits which can return to the environment again. Unlike incineration , recycling of e-waste reduces the amount of greenhouse gas emissions caused by the manufacture of new products.
4. Production: The process of creating output through combining inputs. Size of production is measured either in monetary terms or as units of goods or qualified personnel. 5. Productivity: The quantity of output per unit of input.
It also makes our lives easier in many ways. There are many other things that you can recycle beside paper or plastic. Some of the things that you can recycle include greeting cards, pantyhose, crayons, bicycles, carpet and
Sources: • Hydro.com – How aluminium is made This source was useful as it explains the process of how aluminium is made and what materials are used to make it. It focus’s on each part of the process explaining what material is used and how that progresses on to create aluminium. There is also an animation on the side of the website visually showing the process and the steps of making aluminium. • Zoltek.com – How is it made?
A small amount of sand was added after the layer of cotton. After that, a layer of silica filled almost 1/3 of the column. Finally, another small amount of sand was added just above the silica. The column was given a little tap with an aspirator to make the silica more compact. Figure 2.
Out of twelve countries, the United States of America is in ninth place, with a recycling rate of 34%! The largest recycling rate of the twelve countries is Austria. It is evident that people should be required to recycle. With the world being polluted and humans being the cause, mandatory recycling is a must have to start cleaning up the Earth.
We must make the most to conserve, recycle and reuse whenever possible because the natural resources on our planet earth are limited. One of the most efficient ways to support recycling is to purchase products made from recycled materials. Maybe by now, you are not aware of how important this act can make a change to the world. However, the effort involves not only recycling existing products, but purchasing products that have already been recycled. Today, you will notice a lot products that are made from recyclable materials thanks to a strong push in green movement recent years.
Diamond Mining These passages present a discussion about arguments concerning whether or not diamond mining has a negative impact on the environment. This is an important debate because of the potential impact it could have on both the economy and environment of the surrounding area. The two positions argue whether or not diamond mines cause harm to the area in which they operate. Both viewpoints have valid claims warranting consideration For example, the evidence suggests that the environment surrounding a diamond mine is polluted by the mining process.