Cement manufacturing requires different types of raw material, mainly limestone,
Iron ore, Bauxite, coal and Gypsum. These raw materials are transported from
different locations and stored in stockpiles at plant site for continuous operation
of plant. Earlier times, these stockpiles were not covered with sheds. During windy
season, lot of fugitive emission takes place from this storage and had a serious
concern for health and safety of employees as well as for surrounding villagers.
To overcome this fugitive emission, pollution control board has given a guideline
to store the material in covered shed. Nowadays many cement plants are going in
for stockpiles with covered shed as this has become mandatory. The covered
sheds also help in protecting the raw materials during rainy season which other
wise will add to high moisture content and pose problems during processing.
In market there are two types of covered shed designs available; readymade and
Site Fabricated. In readymade sheds there are further two types of storage sheds;
Pre-engineered with steel structures and tubular with ball connection type. Both
the above types have their own advantages and disadvantages.
A brief description of each type of shed is given below.
4.1 Pre-Engineered Tubular with Ball Connection Shed
This type of shed is a combination of high wall thickness fabricated tubes
connected to gether by means of special type fabricated ball as shown in figure below:
Here are some advantages of this type of shed.
- Light weight
- Lower civil cost
- Uniformly distributed load
- Low capital cost
- High seismic resistance
- Better Quality because of shop floor fabrication
- Fast delivery as manufacturing time is less.