CETC WILL GET YOU THERE!

FROM

POINT A TO

POINT B…

Moving bulk materials through your manufacturing

process is rarely a

straight shot. Up and over,

under or around, wet, dry,

indoors, outdoors, hot or cold

are just some of the challenges manufacturer’s

partner withCETC to solve!

CETC Services

• Steel to cement

• Waste management - Construction and Demolition

• Power plants and fuel conversion systems

• Oil Drilling (PROPANTS)

Scope of Work:A. Finkl and Sons requested a complete alloy handling system to receive both Lime and Alloys from trucks, transfer to Day BinStorage and then reclaim from “pre-weighed”Day Bins to either EAF, LMF, or VTD.

Challenge:One (1) enclosed truck unloading station and ten (10) Day Bins (each on load cells); transfer conveyors to 1) Holding Hopper and “pivoting” conveyor to ladle at tap at the EAF; 2) Transfer conveyors to Batch Holding Hopper at LMF (complete with “bad batch”

chute to grade or loading to hopper “buggy” to transport small amounts of alloys to VTD).

CASE STUDY A. Finkl and Sons Lime and Alloys

Payback: “Increased productivity four (4) fold….”

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

CE Minerals/Eirich Andersonville, Georgia

Scope of Work:Moving and weighing 10,000 to 12,000 pounds of lime and hi-cal from their individual silos to be pre-weighed, mixed and transferred to the furnace required the design and installation of a weigh hopper, a screw conveyor and a high capacity pivoting conveyor.

Challenge:The existing process required the day melter to manually weigh up the materials, one at a time, using a floor scale. The operator then used a forklift to travel with the pre-weighed materials from the floor to dispatch over the side of the furnace when the roof was swung open to accept the second charge of scrap. Not only did the entire transfer take several minutes, they were not able to pre-batch for several heats, costing time and money.

CASE STUDY Nucor Kankakee Lime and Hi-Cal

Payback: (1) Additional Heat of Steel Per Day

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.

Scope of Work:This project involves the use of a conventional belt conveyor that receives lime, carbon, and DRI from silos that transfers this pre-weighed material onto a Pocket Belt conveyor for transport inside the melt shop. There is a 3rd conveyor to discharge directly into the EAF furnace.

Challenge:This transfer of material dusts so badly that there is a noticeable “dust cloud” at the tail end of the Pocket Belt conveyor, in addition to material spillage. Client pays an outside source with a “Super Sucker” vacuum truck and personnel to come in once a week and clean this area. The monthly cost for this service for this one (1) area alone is in the excess of $10,000.

CASE STUDY Nucor Tuscaloosa Lime, Carbon and DRI

Payback: Less than six (6) months Savings: $120,000 annually

Before

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

Alan Buckley 402-253-2322

www.conveyorsetc.com

We build your project from the ground up…

alan@conveyorsetc.com