Hydrogen Fuel for Future Economy Hydrogen is the fuel of the future. It is an energy carrier which can transform the present fossil-fuel dependent economy into a hydrogen economy and which can provide an emission-free fuel. It can be used in internal combustion engines or fuel cells producing virtually no greenhouse gas (GHG) emissions when …
Read MoreHot Blast Stove Refractories Hot blast stove is used to preheat air used in the blast furnace. It works as a counter-current regenerative heat exchanger. It consists of tall, cylindrical steel structures lined with different kinds of refractories and almost completely filled with checker bricks where heat is stored and then transferred to the fresh …
Read MoreBlast Furnace Valves Blast furnace (BF) process needs large quantity and variety of valves. During ironmaking in the BF, a number of gases, utilities, and dust are to be handled. These include (i) combustion gas, combustion air, and waste flue gas in hot blast stoves, (ii) cold air blast, oxygen, and hot air blast, (iii) …
Read MoreSafety, Environment, and Health Issues of Iron and Steel Industry The iron and steel industry is a heavy industry. In addition to the safety hazards normally present in giant plants, massive equipment, and movement of large masses of materials, employees are exposed to the heat of molten metal and slag at temperatures upto 1,800 deg …
Read MoreSteel Welding Electrodes Welding is the strongest method for bonding metal to metal. It is a process for joining or fastening two pieces of similar metals (work pieces) by melting and fusing (i) the base metals being joined, and (ii) the filler metal applied. Welding can be done without the use of a filler metal …
Read MorePressure Vessels A pressure vessel is defined as a container. Tanks, vessels, and pipelines which carry, store, or receive fluids are called pressure vessel. They are closed vessels which are capable of storing a pressurized fluid, and have a pressure differential between inside and outside, regardless of their shape and dimensions. Normally the pressure inside …
Read MoreHot Blast Stoves High temperature of the air blast blown in the blast furnace has been and remains one of the most important parameters which determine the economic efficiency of the blast-furnace operation. Increase of the air blast temperature reduces the consumption of expensive coke and normally improves blast furnace performance. The hot blast air …
Read MoreSpark Testing of Steels The spark testing of steel is a useful method for identifying the type of steel. It has capabilities of determining the relative carbon content of the steels. Spark test is a simple identification test which is used to observe the colour, spacing, quantity, and quality of sparks produced by grinding of steel …
Read MoreBulk Material Storage and Storage Yard Machines The term ‘bulk handling’ is used in an iron and steel plant for the handling and storage of very large quantities of solid raw materials such as ores (iron ore, limestone, and dolomite etc.) and coal (coking coals, and non-coking coal). These materials are used in huge quantities …
Read MoreRoller Table Conveyor Roller conveyor systems are used as mechanical handling equipment which moves materials from one location to another. These systems provide quick and efficient transportation for a wide variety of materials, which make them very popular for the material handling in the industries. Roller conveyors are essentially used to coveys unit loads with …
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