liman-tech
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Metals

Metallurgy

Ironmaking and steelmaking, rolling mills, metal forming. Vibration and current diagnostics on drives, pumps and gas cleaning; APC and CV quality control on rolling.

Strongest combination
Vibration + Current + APC + CV (surface and geometry control)

This mix delivers the most on the industry's key process stages. Details in the cards below.

Key equipment
Rolling millsBlast / converter furnacesElectric arc furnacesTurbo blowersSinter exhaustersGas cleaningConveyorsOxygen plants
How it works

Monitored machines — interactive

Exhauster, stand gearbox, blower — machines that stop a whole process stage. The models are interactive: measurement points on bearings, drive current from the cabinet.

3D Spin the models — measurement points are marked
3D model of a centrifugal fan: volute with impeller in cutaway, drive train
drag to rotate · scroll to zoom
Where it appears
Sinter exhaustersID fansFD fans
Where we look — click
Effect: Impeller build-up and imbalance — caught before the bearings go.
Signal chain From sensor to diagnosis
Vibration diagnostics
Passer-V + FFT/envelope on Larus
Current diagnostics
Passer-T + motor current signature analysis (MCSA)
APC optimisation
Strix platform + soft sensors + predictive control loops
Computer vision
Cameras + Strix CV apps on Larus-1000
By process stage

Where Liman-Tech applies — stage by stage

For each stage: the equipment worth monitoring and what each method delivers. No fluff.

1

Raw-material prep, sintering and ironmaking

Equipment
Sinter machines, pelletizers, crushers, conveyors, exhausters, blast systems
Vibro Sinter-machine drives, exhausters, blast fans, conveyor drives
Current Motors on exhausters, fans, conveyors, crushers
APC Sintering regime, gas balance, temperature profile
Effect: Stable sintering, lower specific energy and fuel use
2

Steelmaking units (EAF, converter)

Equipment
Electric arc furnaces, converters, oxygen plants, gas cleaning, hydraulic units
Vibro Oxygen-plant compressors, pumps, fans, hydraulic drives
Current Motors on compressors, pumps, fans
APC EAF electrical regime, oxygen flow, bath temperature
Effect: Lower energy use, higher throughput, more consistent heats
3

Rolling mills (hot and cold rolling)

Equipment
Stands, roll drives, coilers, shears, coolers, coolant pumps, hydraulic units
Vibro Stand drive motors, gearboxes, support bearings, coilers
Current Motors on rolling stands and coilers (classic MCSA)
APC Tension, speed, thickness profile, strip temperature
CV Surface-defect and strip-geometry control (on Larus-1000)
Effect: Stable geometry, less off-spec product, higher first-pass yield
4

Gas cleaning and water circuit

Equipment
Scrubbers, cyclones, recirculation pumps, fans, agitators
Vibro All rotating machines
Current Motors on pumps, fans, agitators
APC Reagent dosing, system pressure, water-circuit balance
Effect: Stable water circuit, fewer incidents
Strongest combinations

Where combined methods multiply the effect

Sintering and ironmaking
Vibration + Current + combustion APC
Steelmaking
Current + electrical-regime APC
Rolling mills
Vibration + Current + APC + CV
Main stand drives plus strip surface and geometry control.
Gas cleaning / water circuit
Vibration + Current + APC
What we offer

Three rollout levels — pick by maturity

Level 1

Reliability of critical mill machines

Main stand drives, oxygen-plant compressors, pumps

Stack
Passer-V + Passer-T (MCSA) + Larus-100
Level 2

CV quality control

Surface, strip geometry, end welding

Stack
Larus-1000 with Strix preinstalled
Level 3

Combustion and furnace-regime optimization

Sintering and ironmaking, reheating

Stack
Strix APC — quality models, soft sensors, predictive loops

Results in numbers

  • −5–15% fuel on furnaces and reheating with combustion optimization
  • −20–50% electricity on draft fans (ID/FD fans) when switched to VFD
  • −5–15 kWh/t on the EAF through slag-foaming control
  • Early detection of drive faults — 2–6 months before failure

Industry benchmarks; your actual results follow a site assessment at your operation.

Video surveillance across the main production shops of a metallurgical plant is one of our live cases.

How to buy

Three commercial models

From outright purchase to a service model where you pay out of verified savings.

CAPEX — purchase

You own the hardware and software — the full effect is yours. Transparent and familiar; for critical infrastructure it is the only option.

MaaS — subscription

Monitoring-as-a-Service: 36 months, a monthly base fee plus a share of the verified effect. The performance risk is ours — no effect, nothing beyond the base.

ESCO — energy performance contract

Energy-saving measures with no capital outlay on your side: we invest, repayment comes out of verified savings.

One minute

Find out where to start at your works

Rolling stands, exhausters, oxygen plants, gas cleaning, conveyors — tick what hurts and a manager comes back with specifics: which machines to monitor and how big the pilot should be.

  • We match the method mix to your equipment
  • We size the pilot and give you ballpark figures
  • We reply within one business day
1. What hurts right now (pick any)
2. Scale