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Mining and process industries

Description
Problem name and type, featuresDifficultyRelated examples
A‑1 Production of alloys: Blending problem

formulation of blending constraints; data with numerical indices, solution printout, if-then, getsol		 * blending_graph.mos
A‑2 Animal food production: Blending problem

formulation of blending constraints; data with string indices, as, formatted solution printout, use of getsol with linear expressions, strfmt		 * a1alloy.mos
A‑3 Refinery : Blending problem

formulation of blending constraints; sparse data with string indices, dynamic initialization, union of sets		 ** a2food.mos
A‑4 Cane sugar production : Minimum cost flow (in a bipartite graph)

mo ceil, is_binary, formattext		 * e2minflow.mos, mincostflow_graph.mos
A‑5 Opencast mining: Minimum cost flow

encoding of arcs, solving LP-relaxation only, array of set		 ** a4sugar.mos
A‑6 Production of electricity: Dispatch problem

inline if, is_integer, looping over optimization problem solving		 **


Further explanation of this example: 'Applications of optimization with Xpress-MP', Chapter 6: Mining and process industries (blending problems)

mosel_app_1.zip[download all files]

Source Files
By clicking on a file name, a preview is opened at the bottom of this page.
a1alloy.mos[download]
a2food.mos[download]
a3refine.mos[download]
a4sugar.mos[download]
a5mine.mos[download]
a5mine2.mos[download]
a6electr.mos[download]
a6electrg.mos[download]

Data Files
a1alloy.dat[download]
a2food.dat[download]
a3refine.dat[download]
a4sugar.dat[download]
a5mine.dat[download]
a5mine2.dat[download]
a6electr.dat[download]




a2food.dat

! Data file for `a2food.mos'

P: [(oat 1)     13.6 7.1 7          ! Composition of raw materials (percentages)
    (maize 1)    4.1 2.4 3.7
    (molasses 1) 5   0.3 25 ]

REQ: [9.5 2 6]                      ! Nutritional requirements

RAWMAT: [(oat)    [11900 0.13]      ! Raw material availabilities and prices
        (maize)   [23500 0.17]
        (molasses)  [750 0.12]]

                                    ! Cost of processing operations
PCOST: [(grinding) 0.25 (blending) 0.05 (granulating) 0.42 (sieving) 0.17] 

DEM: [9000 12000]                   ! Demands for food types
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