Mineral Processing is one of the integral processes of the industrial operation. It is a method of separating the commercially valuable minerals from its ore. Initially the raw ores are broken up with hammers using a process called Spalling. The processing can involve four general types of unit operation which produces the purest form of mineral ore. The processes can be classified under dense medium separation and gravity separation. There are even electrostatic separation and Magnetic separation along with hydro metallurgical and pyrometallurgical processes.
Bengal Tools has the most well defined concepts in mineral processing which has enabled its operations in diversifying sectors. It has formed one of the sophisticated Mineral Beneficiation Plant which has been working incessantly to introduce novel methods for separating the minerals from th,meir ores. The machinery that is used has been procured from the reliable companies and is latest in their version. The processes that are adopted are mostly in tune with the industrial patterns. Qualified team of engineers and experts are appointed to monitor the operational process of the plant.
Bengal Tools Limited has become a reckoned name in delivering the most optimized Bulk Material Handling Solution to the leading PSUs of the country. It is the primary objective to generate the best industrial solutions through the most advanced technological support. Being one of the leading names in industrial sector, Bengal Tools Limited has become a famous EPC Contractor that is offering turnkey solutions to different significant projects in association with eminent enterprises like SAIL, BHEL, NALCO, Tata Chemicals Limited, Vizag Steel, CESC, Mitsubishi and many more.
Mineral Processing Gets an Innovative Approach with Mineral Beneficiation Plant
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Bulk Material Handling Equipments Are Needed To Be Strong and Robust
The bulk material handling sector requires strong and robust equipments and tools along with other sorts of supplies to transport bulk materials from one area to another. You'll find a variety of bulk material handling tools in mines, docks and in a host of industrial settings, preferably where solutions are needed to be handled quickly and effectively. The equipment used needs to be hardy enough to deal with the particular rigorous requirements in a day to day basis.
A general example of a type of equipment that can be used for bulk material handling is a Ship Unloader that is hard at work at a busy dockside placing. Sites that need successful bulk material handling tools resort to architectural firms that provide turnkey solutions which can be suitable for the consumer’s individual preferences.
The primary function of bulk material handling equipments is usually to move goods from one area to a different one securely, safely and as swiftly as possible. Steadfast solutions pertaining to bulk material handling are supplied by engineering professionals who manufacture, design and develop equipments for varied range of customers. Their particular skills and experience are needed for different projects that are in need of reliable and affordable machineries that are designed with bulk material handling in mind.
Reclaimers, pipe and belt conveyors, stackers, the entire listing of bulk material handling equipments is highly comprehensive. The demand might be of either handling, loading or unloading heavy equipments or light weight equipments and finally transporting them. Whatever the demand is and wherever and whenever there is a need to handle bulk materials, bulk material handling equipments cope with the demand. It is the bulk material handling equipments that make the work of managing different types of bulk materials in cement plants, power stations and other industrial locations easy.
Bengal Tools is the manufacturer and designer of heavy to light weight bulk material handling equipments for years. Their long list of projects and clientele stand testimony to the quality of service they offer in the domain of bulk material handling.
The Basics of Air Preheaters
As the name suggests, air preheater heats up air. It absorbs the heat from the flue gas
emitting from the outlet and then transfers the heat to the incoming cold air.
Its main objective is to enhance the thermal efficiency of the process. It is
actually one of the most important boiler accessories used in industrial units
where heating is an integral part.
The air preheater is nothing but a waste heat
recovery device used to reduce the heat lost from hot air. In the boiler, steam
is produced on being heated with coal. It emits hot flue gas with extremely
high temperature. The air preheater absorbs the heat from this flue gas and
transfers this heat to the air going to coal or boiler. The flue gas coming
through the chimney is of no use but its heat can definitely be used. Air
preheater captures this heat and passes this heat to incoming cold air into the
heating system. So in this way, the preheater acts as an energy saving device
because without its absence the coal in the system would have received cold air
and hence it would have required more heat energy to heat up the water in the
boiler.
There are generally two categories of air preheaters available – tubular type
and regenerative. Now-a-days regenerative ones are most commonly used though
tubular ones also exist. The tubular air preheater consists of some vertical
and horizontal tubes for the movement of air.
The hot flue gases come through the tubes in the top and move downward
through the tubes. On the other hand, ambient air enters through the tubes at
the bottom and moves upward. There is a fan installed in the middle to help the
movement. The cold ambient air gets heated up by the downward movement of the
hot flue gases. So inside the preheater, the cold air gets heated prior to the
process and thus increases the thermal efficiency of the boiler. In case of
regenerative preheater, the process of absorbing heat from the hot flue gas is
done with the help of an absorbing material unlike the tubular preheater where
the process is purely mechanical. The two regenerative types – rotating plate
and stationary consist of devices which absorb heat and confine the heat in a
smaller area to heat up the cold ambient air.
The most common type of air preheater that is
being used is the tri sector based rotating plate regenerative air preheater.
Here the major portion of the device is connected to the hot air; whereas a
smaller portion is linked with ambient air by a fan. As the hot flue gasses
heat up the central element by the rotor, the cold atmospheric air gets heated
up.
The Major Steps Involved In Processing Coke
In manufacturing
industries, especially in iron and steel industries, coke oven plant is an
integral part. Coke oven is nothing but a heating device used to produce coke
from coal. Coke is a modified form of coal with high carbon content and less
impurities. The temperature used to make coke in the device ranges from 1000
degree Celsius to 2000 degree Celsius. The gas produced by this heating process
is the coke oven gas. The gas which is produced from the coke oven plant can be
of extreme economic importance as r several by products can be available from proper
treatment of this gas.
Coal when heated
to produce coke, the volatile matters in coal evaporates. These volatile
matters take off from the coke oven chamber as a hot gas – coke oven gas. This
gas after cooling creates a condensation liquid and gas. The coke oven by product plant collects
this semi-liquid semi –gas product to make number of coal chemicals which are
of great importance. The coke oven gas after being treated can be used as fuel
gas. The major use of the coke oven gas is in the form of fuel gas and it is
extensively used.
The major steps in the processing of coke oven
gas include cooling, tar precipitation, ammonia removal, exhausting process
etc. First the gas is passed through the primary cooler which cools down the
gas to form a condensation. There are various processes and devices available
for this cooling and each of them has its own merits and demerits. In some
cases cooling tower is also used to cool down the gas. The second step is
getting the tar precipitator which starts automatically after the initial
cooling. Then the gas is passed through the coke oven battery with the help of
a large blower called exhauster. Next is the ammonia removal process which is
done by spraying sulfuric acid into the gas to form ammonium sulfate and thus
ammonia is removed. Now the gas undergoes final cooling process to remove heat
it has received from the exhauster. After that several products like naphthalene,
light oil is manufactured from this gas.
Coke oven gas is
of extreme importance because of it’s by products. The tar produced in this
cooling process is used in many chemical processes. Naphthalene is also useful
for some purpose. There are many other products manufactured from the coke oven
gas by little treatment with these products. Now-a-days the production of those
by products has reduced to a great extent as these products can also be
produced from petroleum in lesser cost so now the major use of this gas is as
fuel gas. Bengal Tools Ltd. is one
of the fastest growing companies offering end-to-end solutions to coal handling plants.
Coal Washery and Coal Handling Plant
India
is a nation of plenty, be it unemployment, needs or population. To add to the
tally, the energy needs of the nation are always sky-rocketing. In such cases,
coal happens to be a savior, to the nation. Coal satiates atleast 55% of the
nation’s energy needs, with a production of 450 million tones. Furthermore, it
has also been envisaged, that the production of this form of energy, in the
nation, would exceed 600 million tons in the near future. Least to say, the investment
opportunities in this sector, is in plenty as well. However, before getting
into the number game, it is mandatory to have a clear understanding of the
intricacies, of the product.
A
coal washery, shoulders the
responsibility of washing the coal from its several impurities, namely water
and soil. Next, a CPP or also commonly known as a coal handling plant, grades these large chunk of coals, into
smaller pieces or in a tad lower form. It is only after the product passes its
clinical tests, that it is ready, to be transported into the global or the
local markets. However simple it appears to be, the segregation of coal,
encapsulates myriad stages, namely stacking, reclaiming, coal sampling,
washability, screening, gravity separation and so on.
With
the passage of time, the Indian coal reserves have mustered unrequited fame and
honor. According to a recently conducted survey, India happens to be one of the
largest reservoirs of coal, with 267.21 billion tones of coal, under its belt.
Hands down, it happens to be one of the largest in the world, with 105.82
tonnes, proven till date.
Lastly,
the thermal power projects and the metal manufacturing industries, in the
nation, are highly dependent on the coal industry, for its progress. The
gigantic mega power plants tend to use up atleast 40 MMT of coal, every year.
Staggering! Keeping in mind the fact, that non renewable sources of energy,
wouldn’t suffice the future generation, the coal industry easily dominates the
energy market.
Emergence of Coal Handling Plants
The
Indian coal industry is one of the largest industries based on production level
and huge resource base. Despite such high volumes of reserve base, India has
not yet been able to cope up with the deficit in production against the growing
industry demands. With the growing demand of coal in recent years, the coal
industry is rising to become the top industry in Indian market and a huge
source of revenue.
Since there is a bulk requirement in coal production, the layout and structure of a coal handling plant needs to be robust and simple so as to minimize maintenance cost and effort. Coal is transported to these plants by different types of bulk handling equipments and is then crushed in through various levels of crushing with a system that comprises of various conveyor belts and electro-magnetic vibrating feeders. Once the crushing is done, the crushed coal is moved to screening plant where particles are separated based on different sizes. Then, the coal is moved through the process of dewatering i.e. removing water content from coal in the Coal Washery.
The process of conversion of coal into coke using the coke oven by-product involves volatile matter that is present in coal to be vaporized and driven off. This volatile matter evaporates through the oven chambers as hot, raw coke oven gas.
Bengal Tools Limited has made its mark in the industry as the fastest growing company in Coal Beneficiation plant. It is the one stop solution to all requirements related to the functioning of a coal handling plant.
Air Preheaters-Types and Industries
Air Preheaters are used as heat exchangers
for heating, evaporating, cooling and condensing and also for heat recovery in
a large number of industries. The reason for the worldwide acceptance of air
preheaters are their high thermal effectiveness, effective leakage control
properties, proven reliability and performance, compactness of their design and
their adaptability to any fuel burning process.
Available in a broad range of arrangements
and size, air preheaters are engineered to meet specific requirements and
operating conditions of a variety of applications. The industries in which air
preheaters are used are follows:
·
Electrical power generating
plants
·
Package and large industrial
boilers
·
Fluidized bed boilers
·
Waste incinerators and drying
industries
·
Flue gas and reheating
industries
There are different types of airpreheaters. Finned-tube preheaters can be made from a wide range of materials
like steel, stainless, copper/aluminum, aluminum and other special materials.
Again, there are plain-tube preheaters which are used when a fluid present
around the tubes is so polluted that finned tubes can no more be used. Plain
tubes have the probability of getting configured in different way either next
to each other or serially.
Bengal
Tools provides one-stop solution in bulk material handling and is the number
one EPC’s contractors company in India looking forward to make a mark in the
international front very soon.
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