A. Finkl and Sons CASE STUDY A. Finkl and Sons Lime and Alloys
Conveyors Etc. (CETC) designed, fabricated, delivered and provided on-site supervision to oversee the contractor. The system included a Level 2 PLC control system with remote I/O to interact with the Master control system at the EAF supplied by SMS Siemag. With only a staff of six (6), the system was erected and completed within projected schedule of three (3) months. The alloy handling system was brought on line with no-difficulties and the client was more than impressed with its operation. CETC SOLUTION
A. Finkl and Sons CASE STUDYNucor Kankakee Lime and Hi-Cal
A. Finkl and Sons CETC SOLUTION Conveyors Etc. (CETC) provided a design for the Dolomitic Lime and Hi-Cal to be pre-weighed into a batch weigh hopper below the Dolomitic silo. Utilizing a PLC automated control system, a screw conveyor discharges the Hi-Cal into this weigh hopper via a new screw conveyor. The Lime is discharged via a rotary feeder into the same weigh hopper. Once the desired weight is achieved, a pneumatic transport system conveys the batch to a holding hopper sitting above a pivoting conveyor on the same support structure at the side of the melt shop. When the furnace is ready for this pre-weighed batch of Lime and Hi-Cal, the conveyor pivots into position over the shell of the furnace. The belt conveyor then starts (automatically) and a gate above the conveyor is opened to discharge the pre-weighed batch of up to 12,000 lbs. of Lime and Hi-Cal mix onto the belt conveyor. This high capacity pivoting conveyor completes the transfer in 15 – 20 seconds (total time). Once discharged, the pivoting conveyor pivots into a parked position at the side of the melt shop wall. The system is timed to allow an immediate discharge of the second scrap bucket once the discharge cycle is completed at the furnace. The system has been in operation for three (3) years without problems, in particular no fires to the belt, which was a concern for the staff at inception of this project.
A. Finkl and Sons CASE STUDYNucor Tuscaloosa Lime, Carbon and DRI Before
A. Finkl and Sons CETC SOLUTION Conveyors Etc. (CETC) was hired to provide an enclosure for this area that would minimize the dust and improve spillage throughout this transfer. CETC redesigned the head end discharge from the BC-8 belt conveyor and made a scoop-type chute to load the Pocket Belt conveyor. All enclosures are easily accessible with the use of our spring hinge clamps. CETC also recommended that a dust collector be added at this transfer to capture the dust. Although they declined the dust collector, the client (Nucor) was able to keep the area clean and now only requires the vacuum truck to clean on a quarterly basis. After