zielsicher Englisch, Metalltechnik, Schulbuch

Listen to the second part of the guided tour. Then try to answer the following questions. 1. What happens, when hot air up to 1250°C is blown into the blast furnace? when hot air is blown in, the coke is burnt 2. Name the gas, which develops in the blast furnace? blast furnace gas 3. In which part of the blast furnace is iron oxide reduced to iron? at the base of the blast furnace 4. Name the four different zones. preheating zone, reduction zone, coking zone, melting zone Now listen again, and check if your answers above are correct. Take notes about the temperatures in the different zones. Preheating zone, 200°C–600°C. Coking zone, 1000°C–1100°C. Reduction zone, 600°C–1000°C. Melting zone, 1500°C–1600°C. Products of a blast furnace. Fill in the missing words from the box. cleaned building cast iron heating base middling steel district heating flammable There are three different products from a blast furnace: Pig iron, slag and blast furnace gas. The broken pig iron is a  middling  product. There are two kinds of pig iron: White pig iron is the  base  product for  steel  production. Grey pig iron is the base product for  cast iron production. Slag is used for  building  purposes such as insulation and road construction. The  flammable  blast furnace gas is  cleaned  and used for  heating  of the air for the blast furnace as well as for  district heating  . 08 A2–B1 listening n4ma5u Word bank 08 preheating zone Vorwärmzone coaking zone Kohlungszone melting zone Schmelzzone humidity Feuchtigkeit cast iron Gusseisen prohibited verboten scrap Schrott 10 middling Erzzwischenprodukt insulation Isolierung district heating Fernwärme 09 A2–B1 listening n4ma5u 10 A2–B1 Mosaic Find the words: TCSA OINR cast iron TBALS ACUEFRN blast furnace NIORDEUTC NOZE reduction zone YUIHDTMI humidity TSIDCRIT GIAHNTE district heating 91 17 Blast furnace Nur zu Prüfzwecken – Eigentum des Verlags öbv