MATLS 4I03 Lecture : Lecture_4_13.pdf
11 Feb 2014
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Document Summary
Sweden, 2006 (cid:1) small country with strong steel industry (cid:1) still very hard to collect good data (cid:1) units: ktonnes. Differentiating industrial sectors (cid:1) minerals, metals and materials industries differ tremendously (cid:1) impact on ecosystems can be assessed by examining the sectors on the basis of: (cid:2) price (cid:2) annual production (cid:2) value (price x annual production) Differentiation by price (cid:1) huge differences in price (cid:1) mainly due to energy input (cid:1) energy is a prime indicator of environmental impact (cid:1) impact on the environment is not fully reflected in pricing. Differentiation by annual production (cid:1) the scale of industry is also a measure of the impact (material & energy intensity) (cid:1) steel industry dwarfs all other metals (over 1518. Mt in 2011) (cid:2) large increases in china and india. Differentiation by value (cid:1) despite steel & cement"s low price, value is high (cid:1) aluminum"s high price increases value (cid:1) gold production is totally price driven.
