» Projects » Aluminium Projects
Aluminum is known for its corrosion resistance
ability owing to the phenomenon of passiveness and the low density of metal.
The presence of bauxite makes it possible as it is the third most abundant
The aluminum is extracted from bauxite with (sp gravity 2.5
3) and consists of 31 52% of Alumina (Avg 41% ). The reason
why aluminum production is less than iron in-spite of the fact that raw
materials are more available are, the cost (1019$/ton) of the extraction
process is higher. The 60 70% of the costing in aluminum goes in
refining and power consumption (153 MJ Avg).
There are two main processes involved.
- Bayer Process ( For Alumina refining)
- Hall Heroult Process
Copper is a ductile metal with very high thermal &
electrical conductivity. It is used as a conductor of heat and electricity,
a building material, and a constituent of various metal alloys. Most copper
is mined or extracted as copper sulfides from large open pit mines.
Copper is produced primarily by pyrometallurgical smelting methods.
Pyrometallurgical Smelting process include 4 steps - Roasting, Smelting,
Concentrating & Fire Refining. The 4 smelting furnace technologies used
are Reverberatory, Electric, Noranda, and Flash.
The reverberatory furnace smelting operation is a continuous process, with
frequent charging and periodic tapping of matte, as well as skimming slag.
Heat is supplied by natural gas, with conversion to oil during gas
restrictions. Furnace temperature may exceed 1500, with the heat being
transmitted by radiation from the burner flame, furnace walls, and roof into
the charge of roasted and unroasted materials mixed with flux.
Electric arc furnace smelters generate heat with carbon electrodes that are
lowered through the furnace roof and submerged in the slag layer of the
molten bath. The feed consists of dried concentrates or calcine. The
chemical and physical changes occurring in the molten bath are similar to
those occurring in the molten bath of a reverberatory furnace.
The Noranda process, allowed the continuous production of blister copper in
a single vessel by effectively combining roasting, smelting, and converting
into 1 operation. The Noranda process uses heat generated by the exothermic
oxidation of hydrogen sulfide. Additional heat is supplied by oil burners or
by coal mixed with the ore concentrates.
Flash furnace smelting combines the operations of roasting and smelting to
produce a high-grade copper matte from concentrates and flux. In flash
smelting, dried ore concentrates and finely.
ground fluxes are injected together with oxygen and preheated air (or a
mixture of both), into a furnace maintained at approximately 1000. As with
the Noranda process reactor, and in contrast to reverberatory and electric
furnaces, flash furnaces use the heat generated from partial oxidation of
their sulfide charge to provide much or all of the required heat.
At MHL we facilitate the copper projects.
Ferro alloy refers to various alloys of iron with a
high proportion of one or more other elements such as manganese, aluminium &
silicon. It is used in the production of steels and alloys as a raw
The alloy impart distinctive qualities to steel and cast iron or serve
important functions during production and are, therefore, closely associated
with the iron and steel industry, the leading consumer of Ferro alloys.
Ferroalloys are produced generally by two methods- more commonly,
ferroalloys are produced by carbothermic reactions, involving reduction of
oxides with carbon (as coke) in the presence of iron. Some ferroalloys are
produced by the addition of elements into molten iron.
MHL has tie up with Chinese technology providers for:
- Ferro Silicon
- Ferro Chrome
- Ferro Vanadium
- Ferro Titanium
- Ferro Molybdenum
We have tie up with best project supplier of non ferrous equipments like
Design Institute of P.R. China.
Rapid increase in construction and heavy industry
has led to spur in the demand of Cement & Gypsum. Cement used for
construction is categorized as hydraulic or non-hydraulic. Cement finds
major application in production of mortar and concrete - the bonding of
natural or artificial aggregate to form a strong building material, which is
durable in the face of normal environmental effects. Hydraulic cement refers
to any cement that will set and harden after being combined with water.
After hardening this kind of cement will retain its hardness and strength
even under water. Most of the construction cements today are hydraulic.
Non-hydraulic lime is primarily composed of calcium hydroxide (generally
greater than 95%). It comprises material such as lime and gypsum plasters,
which must be kept dry in order to gain strength.
Cement manufacturing as a process and as a core industry has undergone many
stages of transformation in recent years. MHL holds deep domain knowledge of
the industry and hence, is equipped to offer customized service that are
directed to meet the needs of clients from cement plants. We can also supply
finest quality of gypsum for this project. MHL is capable of providing
turnkey project for complete Plant of Cement. We execute turnkey cement
projects for Cement Plants, Rotary Kiln Cement Plants, Vertical Shaft Cement
Plants, Clinker Grinding Units, Slag Cement Grinding Units and Slag Grinding
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