MINIMILLS

Benefits

Flat and long steels: between € 2 and 10 per ton of steel
Knowledge aggregation of several sites in one common tool
Better replenishment management
Productivity optimization

Description

SCOOP for Minimill is dedicated to EAF steel making and developed for single and multi-site designs that can share raw materials. On site level, single and multiple flow designs (one or multiple EAF’s) are equally well handled. It fully integrates all production phases of an EAF

Loading of baskets and bunkers
Time under electric arc
Oxygen blowing
Reduction
Deslagging

It includes dust losses upon loading of raw materials and smoke losses during melting and deslagging. It covers an imperfect separation of slag and steel and computes the value of metallic elements that can be recovered from the losses (smoke, dust, slag, steel lost).

SCOOP offers the opportunity to compute raw material prices given public element prices, analysis data and price contract parameters or uses direct prices.

Inputs

Grade definitions
Raw materials (internal or external scraps and recuperation materials, ferroalloys, additions) with purchase cost, chemical analysis, enthalpies and densities
Sourcing (with different prices and availabilities)
Element prices and price contract parameters.
Fixed and Variable costs (operating costs, demurrage, electricity, slag treatment…) re-use and recycling
Technical process parameters (chemical, productivity, thermal)

Constraints

Steel grade definitions
Raw material availabilities
Charging
Volume of baskets, capacity of furnaces
Oxygen balance
Energy balance

Chemical energy
Thermal energy requirements

Temperature profiles
Alkalinity indices
Costs (material, operating , opportunity)
Logistics
And more…

Output

Cheapest feasible raw material mix
Detailed cost, material consumption and productivity reports
Limit Marginal Price (LMP) (~Value in use) of used and unused raw materials
Composition and quantities of steel, slag and loss
Electricity, oxygen, nitrogen ... consumption