Skip to main content

SELECTION OF IRON ORES: metallurgy

 SELECTION OF IRON ORES


The iron ores are taken out or extracted from earth by mining operations, While selecting the site for such mines, the following points should be carefully examined:

1. The iron ores available from mines should be rich in metallic iron content. For ores containing less percentage of metallic iron, considerable amount of coke and flux will be required and it will not be economical to manufacture
iron from such ores. 
2. The mines for the iron ores should be located suitably in both ways, geographically and geologically. By geographical location, it is meant that the mines should be easily accessible and they should be linked up with surrounding towns by suitable transport facilities. By geological location, it is meant that site for mines should not contain conditions which might develop complications in quarrying and mining operations.
3. The composition of gangue or substances associated with ore should also be carefully studied. Some substances are such that they will reduce the value of a rich iron ore while other substances are such that they will increase the value of lean iron ore.
4. The treatment and preparation to be given to the iron ores to make them suitable for blast furnace should be simple and cheap. For instance, the dense ores will require crushing or breaking up before use. This preliminary treatment becomes essential to increase the output.
Labels:

Comments

Post a Comment

Thanks for your comments

Read this Article

Jharkhand D2D exam syllabus

  Jharkhand D2D lateral entry Syllabus * Mathematics * • Complex number • Numerical analysis • Application of derivatives • Statistics • Differentiation • Limits • Set relation and function • Inverse trigonometric function • Matrices and determinant • Continuity • Integration ( definite and indefinite) • Application of integration • Differential equation • Vector • Co ordinate geometry and 3D • Probability • L.P.P • Logarithm • Sequence and series • Trigonometry • Binomial theorem • Partial fraction ___________________ ___________________ * Chemistry * • Solid state • Solution • Chemical kinetics • Chemical bonding • Periodic table • Aldehyde/ ketone/ Carboxylic Acid • Co-ordination Compound • Surface chemistry • Hydrocarbon • Amines • Bio molecules • Polymer • Mole concept • Thermodynamics • D and F blocks • Halo alkane/ Halo arene • Basic concepts of organic chemistry • Environmental chemistry • P-block • Chemical equilibrium • Metallurgy • Ether/ alcohol/ phenol • Atomic s...
Post a Comment
Read more

All About the Sun: Formation, Age, Working Principle & Facts

All About the Sun: Formation, Age, Working Principle & Facts ☀️ Everything About the Sun The Sun is not just a glowing object in the sky. It’s a massive, powerful star that keeps our planet alive. In this article, we’ll explore how the Sun was formed, how it works, its structure, age, and future — in the simplest terms. 🌌 How the Sun Was Formed About 4.6 billion years ago, a huge cloud of gas and dust (a solar nebula) collapsed due to gravity. This led to the creation of a hot core — the protostar. As the core became hotter, nuclear fusion began, forming the Sun. Read More 🌫️ Nebula Collapse: Gravity pulled gas and dust inward. 🔥 Protostar Formed: A dense, hot core appeared. ☀️ Fusion Ignition: Hydrogen atoms fused into helium. 🌞 Main-Sequence Star: The Sun was born! ⏳ Age of the Sun The Sun is estimated to be 4.6 billion years old . It is in the middle of...
Post a Comment
Read more

Laws of Motion – Class 11 Physics NCERT | Newton’s Three Laws, Formulas & Derivations

🧲 Laws of Motion – Class 11 Physics (NCERT) The Laws of Motion were given by Sir Isaac Newton and are fundamental to understanding force, motion, and mechanics in physics. This chapter from Class 11 NCERT explains how forces affect the motion of objects. 📘 Newton's First Law of Motion (Law of Inertia) Statement: A body remains at rest or in uniform motion in a straight line unless acted upon by an external force. 🔹 This law defines inertia – the natural tendency of objects to resist change in their motion. Inertia depends on mass. More mass → more inertia. 📌 Real-Life Example: You fall forward when a bus suddenly stops. 📘 Newton's Second Law of Motion Statement: The rate of change of momentum of an object is directly proportional to the applied force and takes place in the direction of the force. ✅ Derivation: Momentum, p = mv Rate of change of momentum = d(mv)/dt = m dv/dt = ma (if mass is constant) F = ma 📌 This is t...
Post a Comment
Read more