Oct 02, 2019 Why was the Wootz steel making process completely lost by the mid- 19th century? Answer: There are two reasons for it: The sword and armour making industry died with the conquest of India by the British. Imports of iron and steel from England displaced the iron and steel produced by craftsmen in India. Question 15. What were the furnaces made

Oct 02, 2019 Class 8 History Chapter 7 Weavers, Iron Smelters, and Factory Owners Picture-Based Questions. Question 1. Observe the pictures taken from the NCERT textbook subsequently and answer the questions that follow: Questions: (i) This is an important port on the Western coast of the early 17th century India. Identify the port

Steelmaking is the process of producing steel from iron ore and/or scrap.In steelmaking, impurities such as nitrogen, silicon, phosphorus, sulfur and excess carbon (the most important impurity) are removed from the sourced iron, and alloying elements such as manganese, nickel, chromium, carbon and vanadium are added to produce different grades of steel

hematite iron ore. It has the best physical properties needed for steel making. Iron ore from these mines is exported to Japan and South Korea via Vishakhapatnam port. • Ballari-Chitradurga-Chikkamagaluru-Tum aku ru belt in Karnataka has large reserves of iron ore. The Kud remukh mines located in the W ester n Ghats of Kar nataka

Iron (Fe) is placed above copper (Cu) in the reactivity series. This means that a chemical reaction had occurred between iron (iron pot) and aqueous CuSO 4 solution. Since iron was consumed in the reaction, a number of holes appeared in the pot. NCERT Exemplar Solutions for Class 10 Science Chapter 3 Long Answer Questions. Question 59

The first metallurgical step involved in this process is to reduce iron ore to metallic iron in a blast furnace, using coke as both a fuel and reducing agent. The produced metallic iron contains a relatively high proportion of carbon (4%) and it is passed to the steelmaking process in the form of liquid at approximately 1450 C, called as 'hot

Dec 23, 2020 The process is among several initiatives which use an H2-DR / EAF setup, combining the direct reduction of iron ore by use of H2 with an EAF for further processing into steel. The product from the H2-DR process is DRI or sponge iron, which is fed into an EAF, blended with suitable shares of scrap, and further processed into steel

From blasting to crushing to separation – more than 85% of the iron mined in the United States is mined in northeastern Minnesota to make our nation’s steel. Blasting Taconite is a very hard rock. Using explosives, the taconite is blasted into small pieces. Transportation The taconite pieces are scooped up by electric shovels. Each

The Iron Ore, Coke and Limes ... Presentation will help to provide basic principle and brief overview of iron making to steel making process. which is

Jan 20, 2017 The process of turning raw product into finished stainless steel is a lengthy one, but it can be simplified into six steps. Let’s look at this incredible process. Making the Iron. To create pure steel, the products that go into it- lime, coke and iron ore- must be made into iron

Dec 05, 2021 What is iron ore? Iron ore is a mineral substance which, when heated in the presence of a reductant, will yield metallic iron (Fe). It almost always consists of iron oxides, the primary forms of which are magnetite (Fe 3 O 4) and hematite (Fe 2 O 3). Iron ore is the source of primary iron for the world’s iron and steel industries. What is a

Dec 15, 2020 (c) A process of obtaining a metal from iron ore (iv) Bellows (d) A fine muslin on which decorative motifs are woven (v) Slag,Heaps (e) A persian word meaning a warehouse (vi) Jamkani (f) A machine by which a single worker can handle several spindles for spinning thread

Oct 19, 2020 Mention the inputs of iron and steel industry. Answer: The inputs of iron and steel industry are: Raw materials – iron-ore, coal, limestone; labour, capital, land, other infrastructure. Question 30. Write two characteristics of steel. Answer: (i) Steel is hard and it can easily be shaped, cut or made into wire

Jul 03, 2020 Steel Manufacturing Process Iron. Making iron is the first step in the production of steel. Iron is usually made from iron ore, coal and limestone – although some plants around the world have developed alternative methods of iron manufacture. These newer methods require slightly different raw materials but iron ore, coal and limestone remain

Dec 21, 2021 In the process of galvanization a layer of zinc is deposited on iron using electrolysis. 15. Stainless steel is very useful material for our life. In stainless steel, iron is mixed with (a) Ni and Cr (b) Cu and Cr (c) Ni and Cu (d) Cu and Au . Solution (a) Ni and Cr . Stainless steel is an alloy of Iron, Nicker and chromium

Aug 02, 2021 The term smelting is the process of obtaining a metal from rock (or soil) by heating it to a very high temperature or of melting objects made from metal in order to use the metal to make something new. Question 13. Which were the two industries focused by the British rule? Answer: Textile, Iron and Steel industries. Question 14

The differences in the properties of pig iron and steel are summarized in the table as follows: Pig Iron. Steel. Pig iron contains more than 2 % carbon. Steel contains less than 2 % carbon. Pig iron is obtained by processing of iron ore in the blast furnace in presence of coke. Steel is obtained by the processing of pig iron

Check the below NCERT MCQ Questions for Class 8 History Chapter 7 Weavers, Iron Smelters and Factory Owners with Answers Pdf free download. MCQ Questions for Class 8 Social Science with Answers were prepared based on the latest exam pattern. We have Provided Weavers, Iron Smelters and Factory Owners Class 8 History MCQs Questions with Answers to help students

Making steel. Steel is made from iron ore, a compound of iron, oxygen and other minerals that occurs in nature. The raw materials for steelmaking are mined and then transformed into steel using two different processes: the blast furnace/basic oxygen furnace route, and

such as iron ore, coal and limestone, along with labour, capital, site and other infrastructure. The process of converting iron ore into steel involves many stages. The raw material is put in the blast furnace where it undergoes smelting (Fig 5.6). It is then refined. The output obtained is steel which may be used by other industries as raw material. Do you know? Emerging

1.Primary process: In primary process, the liquid iron is converted into steel using blast furnace 2.Secondary process: In secondary process, this requires refining of crude steel before casting. In this, alloying agents are added. Note: For steel making, blast furnaces and scraps are used.Its carbon content is $3.8$ to $4.7%$ and its iron content is $92%$ . and impurities

The Wootz steel making process was widely known in south India. But it was completely lost by the mid-nineteenth century. The swords and armour making industry died with the conquest of India by the British. And imports of iron and steel from England displaced the iron and steel produced by smelting in furnaces

The BOS process uses pure oxygen, injected by a lance, for refining the relatively impure hot metal (and scrap is used for temperature control). The electric arc furnace uses primarily electrical energy to supply heat to melt scrap steel, sponge iron, or mixtures of scrap and other iron units. Compared to the BOS process, the EAF requires