Steel

The caster was designed for a bloom size of 300 x 400 m used to produce engineering steels, spring steels, bearing steels and the highest-quality tire cord grades.

Development and commissioning of a fully automated control system that consisted of electrical panels and PLC/HMI control programs

To reduce dust emissions on sinter lines, two existing ESP filters were replaced with modern hybrid filters.
The filter consists of three sections: the first field is designed as an ESP and captures heavier dust particles. The next three fields are designed as fabric (bag) filters, so capturing the fine particles is greatly improved.
Generally, hybrid filters combine the best of fabric filter and ESP technology for maximum fine particulate matter emission capture.

Dry sorbents and active carbon injection systems were installed for better results of the filters.

Three main purposes of dry sorbent (lime) injection:
• SO2 removal
• as a fire retardant (reducing the combustibility)
• a pre-coating material for the bags (acting as a protective layer against hydrocarbons and acidic components. ).

The purpose of the injection of active carbon is to remove dioxins from flue gas. Active carbon injection in an ATEX installation, therefore, special equipment and special protocols had to be used.
Dust mixed with additives from filter hoppers and party recirculated back to filter to save on lime consumption.

The rest of it is conveyed to residual silo and discharged to trucks.

• Delivery of a fully automated control system
• Design and delivery of electrical panels with redundant UPS supply
• PLC and HMI control programs

Development and commissioning a fully automated control system that consisted of electrical panels and PLC/HMI control programs.

Three years

1. The complete revamping of the automation system for DC furnace and new SCADA servers
2. Revamping of the automation system for the 6-strand billet caster
3. Revamping of a dust collection system consisting of two bag filters