INDUSTRIES

Applications in the field of metallurgy have always been the most heavy and demanding. Our team with more than 100 plants designed and built over 20 years of experience will ensure the application of the most effective technologies for the following applications:

Water Treatment Plants and Water Cooling Systems for :

  • Blast furnaces and coking plants
  • Electric furnaces and ladle furnaces
  • Walking beam furnaces
  • Continuous casting
  • Rolling mills

Above applications require the specialization in the design and construction of plants for the following circuits:

Direct Circuit
Indirect Circuit
Make Up Water Treatment Plant
Blow Down Treatment
Phosphatization And Galvanization Lines

• Blast furnaces and coking plants
The cokemaking process involves carbonization of coal to high temperatures (1100°C) in an oxygen deficient atmosphere in order to concentrate the carbon. The commercial cokemaking process can be broken down into two categories:

• a) By-product Cokemaking
• b) Non-Recovery/Heat Recovery Cokemaking-

• Electric furnaces and ladle furnaces

The electric arc furnace operates as a batch melting process producing batches of molten steel known “heats”. The electric arc furnace operating cycle is called the tap-to-tap cycle and is made up of the following operations:

• Furnace charging
• Melting
• Refining
• De-slagging
• Tapping
• Furnace turn-around

Modern operations aim for a tap-to-tap time of less than 60 minutes.
After tapping from electrical arc furnace, the ladle furnace is put on Ladle Furnace refining position. Ladle Furnace refining is conducted through arc heating and argon blowing. During this process, the steel deoxidization, desulfurization, the adjustment of steel temperature and chemical composition are completed.

• Walking beam furnaces-

Walking beam furnaces are principally used to re-heat unfinished product such as rebar, wire to an even temperature prior to entering the mill area of a facility. The walking beam furnace allows the product to be heated from all sides. They have a four function cycle to move the product through the furnace by performing a “lift”, a “traverse”, a “lower” and a “return” function. The biggest advantage of using this type of furnace over a roller hearth type furnace is space limitations in the facility as a roller hearth will take as much as twice the length to obtain the same tempering.

• Continuous casting-
Continuous Casting is the process whereby molten steel is solidified
into a “semifinished” billet, bloom, or slab for subsequent rolling in the finishing mills

• Rolling mills

Rolling is a metal forming process in which metal stock is passed
through one or more pairs of rolls to reduce the thickness and to make the thickness uniform.

Above applications require the specialization in the design and construction of plants for the following circuits:

• Direct Circuit
• Indirect Circuit


• Make Up Water Treatment Plant-

All boilers lose certain amount water in steam leaks; and certain amount is intentionally wasted as boiler blowdown to remove impurities accumulating within the boiler. Boilers generating steam in direct contact with contaminating materials may not recycle condensed steam. Replacement water is required to continue steam production called Make up Water. Make-up water is initially treated to remove floating and suspended materials and undergo softening process before being used in boilers.

• Blow Down Treatment
-
Boiler blow-down is water intentionally wasted from a boiler to avoid concentration of impurities during continuing evaporation of steam. The water is blown out of the boiler through some force by steam pressure within the boiler. There are two ways to do that-

1. Surface Blow Down-
Surface blow-down continuously bleeds off a low volume of water from within the boiler to get rid dissolved impurities within the boiler. It is most effective to remove water with the highest level of impurities; and such water is found where steam separates in the steam drum at the top of the boiler.

2. Bottom Blow Down
Bottom blowdown involves periodically opening valves in the mud drum (lowest part of the boiler) to allow boiler pressure to force accumulated sludge out of the boiler.

• Phosphatization And Galvanization Lines-

Phosphatizing is a method of protecting a steel surface from corrosion and increasing its resistance to wear through the application of a chemical phosphate conversion coating.

Galvanization is the process of applying a protective zinc coating to steel/iron, to prevent rusting. The most common method is hot-dip galvanizing, in which parts are submerged in a bath of molten zinc.