Foil Production Sumps

Foil production involves rolling aluminum or steel into thin sheets using large quantities of coolant and lubricants. Sumps beneath rolling mills collect these fluids along with metal fines and debris, which must be efficiently pumped out for filtration and reuse.

Challenges:
Coolant sumps accumulate fine metallic particles and oils that form dense sludge and emulsions. These mixtures can cause pump clogging, seal wear, and cavitation. Because foil production demands clean environments, overflow or downtime due to pump failure can disrupt production quality and safety.

Solution:
Hevvy/Toyo’s submersible pumps with recessed impellers and optional agitators are designed to handle metal fines, oil-laden fluids, and viscous slurries. Their heavy-duty seals and material options resist emulsions and abrasion, ensuring reliable operation and clean sump management. With low maintenance and strong solids-handling capability, they help keep foil lines running efficiently and continuously.

Wet Scrubbers

Wet scrubbers remove particulates and gases from steel plant exhaust systems by washing them with water or chemical solutions. The collected slurry, containing dust, metal oxides, and chemical residues, settles in sumps or collection tanks that must be regularly emptied to maintain scrubber performance.

Challenges:
Scrubber slurries are abrasive, corrosive, and often have high solids concentrations that lead to rapid erosion of impellers and volutes. Chemical additives can attack seals and metallic components, while variable slurry densities challenge consistent pumping.

Solution:
Hevvy/Toyo’s corrosion- and abrasion-resistant pumps handle aggressive scrubber slurry with ease. Available in high-chrome, stainless steel, or elastomer-lined configurations, they resist both chemical and mechanical attack. Their recessed impeller and agitator systems ensure consistent flow and minimal downtime, making them ideal for continuous scrubber sump operation.

Coke Ovens

Coke ovens convert coal into coke, a critical fuel and reducing agent in steelmaking. The process produces large volumes of wastewater laden with tar, oils, and suspended solids that collect in sumps and require removal or recirculation for treatment.

Challenges:
Coke oven wastewater is highly contaminated with viscous hydrocarbons, fine solids, and corrosive chemicals. Conventional pumps struggle with sticky residues that cause blockages, seal failures, and motor overloads. High temperature and chemical content further accelerate corrosion and wear.

Solution:
Hevvy/Toyo’s heavy-duty submersible and cantilever pumps excel in handling viscous, contaminated fluids. Their open impellers, optional elastomer linings, and agitator technology prevent buildup and maintain smooth flow. With corrosion-resistant materials and mechanical seal protection, these pumps offer reliable operation in the harsh, hot, and chemical-laden environment of coke oven systems.

Mill Scale Pits

Mill scale pits collect steel flakes, cooling water, and oil residues generated during hot rolling and descaling processes. These pits act as settling basins that separate heavy mill scale particles from process water before recirculation or disposal.

Challenges:
Mill scale is extremely abrasive, dense, and prone to settling, creating heavy sludge that is difficult to pump. Standard centrifugal pumps often fail due to clogging, excessive wear, or seal breakdown caused by the mixture of metallic solids, oils, and water. Maintenance and downtime in scale pits can disrupt production lines and increase operational costs.

Solution:
Hevvy/Toyo agitator pumps are engineered specifically for heavy, abrasive sludge applications like mill scale. Their robust wet-end design, high-chrome construction, and built-in agitators prevent settling and keep the slurry moving. By maintaining solids in suspension and minimizing wear, they deliver consistent pit cleaning and reliable long-term performance.