In a blast furnace, fuel (coke), ores, and flux (limestone) are continuously supplied through the top of the furnace, while a hot blast of air (sometimes with oxygen enrichment) is blown into the lower section of the furnace through a series of pipes called tuyeres, so that the chemical reactions take place throughout …
Q. Why are hot blasts of air blown into the blast furnace?
A blast of hot air is blown into the furnace from the bottom. Chemical reactions occur: coke reacts with oxygen from the air, creating the reducing agent (carbon monoxide), which removes oxygen from the ore. 5. Limestone reacts with impurities in the furnace, forming slag, which floats to the top of the furnace vessel.
Table of Contents
- Q. Why are hot blasts of air blown into the blast furnace?
- Q. What is hot blasting?
- Q. What reactions happen in a blast furnace?
- Q. Why is iron converted into steel?
- Q. Which is better iron or steel?
- Q. Which is stronger cast iron or steel?
- Q. What is the world’s strongest metal?
- Q. What is the main difference between steel and cast iron?
Q. What is hot blasting?
Hot blast refers to the preheating of air blown into a blast furnace or other metallurgical process. As first developed, it worked by alternately storing heat from the furnace flue gas in a firebrick-lined vessel with multiple chambers, then blowing combustion air through the hot chamber.
Q. What reactions happen in a blast furnace?
The blast furnace The oxygen must be removed from the iron(III) oxide in order to leave the iron behind. Reactions in which oxygen is removed are called reduction reactions. In this reaction, the iron(III) oxide is reduced to iron, and the carbon is oxidised to carbon dioxide.
Q. Why is iron converted into steel?
Blowing oxygen forces impurities (oxides, silicates, phosphates, etc.) to react with flux to form slag or escape through the top of the furnace as fumes. Flux (limestone) acts as the chemical cleaning agent, absorbing the iron impurities and leaving behind molten steel.
Q. Which is better iron or steel?
In general, due to its increased strength properties, steel is used more often than iron in large-scale industries like construction. It’s more durable and won’t rust as easily, and also has better tension and compression properties.
Q. Which is stronger cast iron or steel?
Steel and cast iron are both strong materials. Rule Of Thumb: Cast iron is harder and stronger, but it’s not as tough (it’s brittle). Steel is not as hard and strong, but it’s tougher.
Q. What is the world’s strongest metal?
tungsten
Q. What is the main difference between steel and cast iron?
The main difference between the two elements is that steel is produced from iron ore and scrap metals, and is called an alloy of iron, with controlled carbon . Whereas, around 4% of carbon in iron makes it cast iron, and less than 2% of carbon makes it steel.
