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Blending ores

Several ores are blended to a final product that must have a certain quality ('grade'). We wish to determine the quantity of every ore to be used in the blend with the objective to maximize the total profit (calculated as sales revenues - raw material cost).
  • simple LP problem
  • data in model or input from file
  • bounds on variables
Further explanation of this example: 'Mosel User Guide', Section 2.2 'A blending example'; 'Applications of optimization with Xpress-MP', Section 2.7 'Blending constraints'. Similar problems: Section 6.1 'Production of alloys', Section 6.2 'Animal food production', Section 6.3 'Refinery'[download all files]

Source Files

Data Files


! Data file for 'blend.mos'
COST: [85 93]
AVAIL: [60 45]
GRADE: [2.1 6.3]

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