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Base Metal Smelting
Transcript of Base Metal Smelting
produced from it's ore. This includes silver, iron, copper and other base metals. smelting uses heat and chemical reducing agents to decompose the ore. Which Countries Largely use this process? Top 10 What is the importance of base metal smelting? -It is an easier way to produce larger quantities of metals at one time
-the metals that are produced are very commonly used and important in everyday life
eg: nickel, lead, zinc and copper
-this industry employs thousands of Canadians
-contributes billions of dollars How can they endanger the health and safety of local populations? Human inhale and ingest pollutants from the smelters which can cause multiple health issues.
Initial exposure: irritated eyes, nose and throat (minor)
More serious, long term exposure: heart and lung problems, premature death, bio accumulation of toxic elements causing birth defects, kidney and liver problems, joint pain, nervous, respiratory and reproductive system damage.
Sulfur Dioxide: Breathing Problems, Impair respiratory systems defenses against bacteria, causes asthma attacks and creates eye irritation.
Nickel oxides, sulfides and other nickel compounds: chronic bronchitis and eventually could cause cancer.
Sulfuric acid and nitric acid are created from sulfur and nitric oxides when they are released into the air making eventually, the land up to 1.5 km away hard for organisms to live on and the lakes unable to bear living organisms.
The chemicals released by the smelter also cause contamination of crops on nearby fields which are then consumed by humans. What are some harmful chemicals released into the environment during this process? -Sulfur dioxide is released in large quantities through the process of smelting mineral ores that contain sulfur.
-Nickel oxides, nickel sulfides and other nickel compounds are also released when processing nickel.
-Sulfuric acid and nitric acid containing soluble metals are also be produced through acid rain and by leech into the soil and lakes damaging both. Example: Sudbury
-Smelting uses heat and other chemicals to decompose metals that gases such as carbon dioxide is produced in large quantities from combustion of fossil fuels. Carbon monoxide is also produced due to incomplete combustion. How can companies and local government control the negative effects of base metal smelting? Focus on the main issues of what is effecting the local population and the environment...
Modern processing plants and smelters can be designed and operated to help control the emissions that are produced. Improve the quality of operations; Old smelters are poor in terms of emission control and can be upgraded
regulations must be applied seriously
include scrubbers in the new forms of smelters
choosing/moving locations of the smelting plants 1.China 6.USA
5.India 10. Turkey