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| Bulk Storage |
Storage is meant to be of two types: Low-capacity bin
storages and High-capacity bulk storage. Unlike bin storages, Bulk storage is
storage of (Cement, Clinker, Slag, Limestone, Additives, Gypsum and other
industrial materials) in large quantities. Followings are the various types of bulk storage depending on the material
to be stored for industrial purpose:
a) Slag Storage:
Slag is metal-separated stony waste material in form of their
metal oxides mixed with silicon di-oxides. Industrially, Slag storage is generally done for Metal ore smelting process for
serving various useful purpose such as ‘temperature control in Smelting’,
‘removing waste from smelting process’, ‘preventing re-oxidation of molten
metal’.
Few facts:
1. Each
year, more than 400 million tonnes of iron and steel slag is produced.
2. In
some countries, up to 80% of the cement contains granulated slag, as it helps
to bring down the cost of cement.
3. According
to the Slag Cement Association, 59% of the embodied CO2 emissions can be saved
by replacing Portland cement with slag cement in concrete.
Advantages:
1. In most Countries, Slag Storage is
used as energy saving material. Therefore, It mainly helps in reducing heating
and cooling cost in industries.
2. Slag storage is helpful in improving
compaction characteristics of cement placement.
3. Slag Storage under sheds is also
helpful in keeping low risk of breakability and maintenance of maximum
strength.
b) Additive Storage:
Additives are the organic material added to subject material
in order to improve its inherit qualities, performance, efficiency and reduce
cost. Industrially, Additive storage
covers a wide range of antifoams, organic additives and other performance
enhancement additives. Some well-known examples of additives are ‘fly
ash’, ‘GGBFS’, and ‘silica fume’.
Few facts:
1. In
the United States, 95% of the masonry cement is made by adding additives to
subject material like clinker , cement etc
2. In
some countries, up to 80% of the cement contains granulated slag, as it helps
to bring down the cost of cement.
Advantages:
1. Achieve high sustainability of plant
by virtue of ‘less electrical consumptions’ and ‘natural resources
preservation’.
2. Storing Additives like fly ash under
shed do not require grinding and mixing, thereby nullify grinding cost to
plant.
3. Some Additives like Sulphites are not
only highly oxidant in nature, but also causes clinical effects in sensitive
individuals. Cross ventilation quality and prevention from adverse conditions
of environment across the Additive storage sheds will eliminate such difficulties.
c) Gypsum Storage:
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| Gypsum storage Shed |
One of the additives, called Gypsum is fine grained calcium
sulphate material industrially used as fertilizer/enhancer in subject material
to improve its inherit qualities, performance, efficiency and reduce cost. ‘Calcium
sulphate di-hydrate’, ‘alabaster’, ‘plaster of paris’, selenite, rock gypsum, and gypsite are some well known gypsum examples used for
gypsum storage.
Few facts:
1. Being the main ingredient in plaster of Paris
(PoP), it is useful in making casts and sculptures.
2. 90% of Gypsum is very soft that it could be
scratch with our fingernail.
3. Most of the Gypsum often found in the mines of
Australia, Mexico, US. Out of these three countries, largest ever gypsum
crystals were found in Mexico, weighing 55 ton.
Advantages:
2. Less operation and maintenance cost
is required.
3. Prevention from vulnerability caused
by adverse environmental conditions.
d) Clinker Storage:
Clinker is nodular material formed at sintering stage in cement
manufacturing process. In the Cement plant, Clinker is prepared by fusing
various clays and limestone with additives by melting them below to the point
of liquidation. Most commonly formed Clinkers are ‘silica fume cement clinker’,
’pozzolana cement clinker’, ‘ground granulated blast furnace slag cement
clinker’.
Advantages:
1. Clinker storage
has an advantage of no spillage of clinker and no dust pollution. This will not
only prevent wastage of resources but also create heath friendly environment.
2. Clinker storage also help in setting
up hot clinker to its favorable temperature before being converted into its grinded
form, called as cement.
3. Clinker has quality of moisture
proof. The only thing can harm clinker is Rainfall or heavy thunder-storms,
which can be easily prevented by clinker storage sheds.
e) Cement Storage:
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| Cement Storage |
Cement is grinded form of clinker. In construction, Cement is
used as binder material that combines with water and other ingredients and sets
to bind two other materials together. That is why it also called as Hydraulic
binder. Various types of cements are pozzolana cement, blast furnace cement,
rapid hardening cement, quick-setting cement, acid resistant cement, sulphate
resistant cement, high alumina cement, white cement, colored cement.
Advantages:
1. Due to its high water resistant
nature of cement, cement storage under sheds are highly non-vulnerable to
maintain moisture and water resistance in heavy rainfall areas.
2. Large scale Cement storage are recommended to maintain temperature as well
as ventilation system, which can be fulfilled under cement storage sheds
3. To feed power stations continuously,
we need efficient loading and unloading of cement, which can be done though
Stacker/reclaimer under cement storage sheds.
f) Limestone Storage:
Limestone (a composition of calcium carbonate, CaCo3 with
other minerals) generally found in most organic sedimentary rocks formed from accumulation of coral, shell, forams
etc. In construction
Industry, limestone is used as one of the major components in clinker/cement
formation. Moreover, In precious Architectural works, limestone is also used
neutralize the effect of acidity caused by acid rain .
Advantages:
1. Limestone storage under steel sheds will cost about 40% less as compared to reinforced
concrete silos. Therefore helps in overall cost cutting.
2. Steel used in limestone storage sheds is highly corrosion proof as well as water
proof. Therefore operation process will be more reliable, long lasting and
anti-corrosion.
3. Limestone storage under storage shed
also provide best protection against adverse weather conditions.
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