what is the difference between dross and scale?
Answer / nihar ranjan
Dross is a mass of solid impurities, which forms during smelting of low-melting point metals viz, Aluminium, Tin, Lead . As metal is melted, it oxidizes, forming a layer of scum and impurities which float to the surface as the metal heats up.
Scaling is mainly due to the presence of calcium and magnesium salts (carbonates or sulphates), which are less soluble hot than cold, or to the presence of too high concentration of silica.
Is This Answer Correct ? | 3 Yes | 0 No |
What are your significant functional achievements in the present company? How did they contribute to the total process
what is discharge ?How to measure it?
what is the function of nozzle? what happend when the fluid flow through a taper pipe i.e. what about inlet and outlet velocity, pressure,
i was selected in bhel et exam in mechanical engg discipline .can any one help me how to get prepare for interview
What are different types of gate valves?
What is process flow diagram?
Why fatigue strength decreases as size of a part increases beyond around 10 mm?
question related 2 soal car: Working under a bright light bulb or in direct sunlight, experiment with the angle of light hitting the solar panels. What angle gives you the fastest rotation of the wheels? How would you modify this car to make the wheels turn faster? How would you modify this design to make a car that could carry or pull a heavier load? How could you modify this design so that your car could run for short periods in complete darkness or low light situations?
WHY DOES LORRY TANKERS DESINGNED TO BE IN SPHERICAL(CURVED,ROUND), WHY DOESNOT IT DESIGNED TO BE AS SQUARE OR REACTANGLE IN SHAPE.
5 Answers APSRTC, Schlumberger,
How many litres did 1 cubic meter contains?
what is cswip?
what is the difference between: throttle valve,flow control valve, venturi??