1001 Space Earth Nature History Human World Science and Technology Chemistry Materials Force and Energy Heat and Light Electricity and Magnetism Industry Machines Electronics and Computers Cars and Trucks Railways Ships Aircraft Fishing and Agriculture Undersea Exploration

Choose a Page:What is glass made from?Who first made glass?Can plastics be recycled?What are phosphates used for?*Can metals be recycled?*Which trees make the best timber?What is an alloy?What are the different types of pl...How is artificial silk made?What is chipboard?What natural fibres are used to ma...Why does concrete set hard?What material is the Statue of Lib... Can metals be recycled? Most metals can and should be recycled if we are to save energy. Much less energy is needed to re-use scrap metals than to process metals from ores. For example, scrap steel can be added to blast furnaces in which iron is being made from iron ore. A blast furnace   Previous: Back Book: 1001 Section: Science and Technology Chapter: Materials