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  1. *NAME: FURNACE
  2. *ROWS: 18
  3. *COLUMNS: 18
  4. *NONZERO: 90
  5. *OPT SOLN: 2141.923551
  6. *SOURCE: Linear Programming--Electric-Arc Furnace Steelmaking
  7. * Data Processing Application. N.Y.: IBM Corp.
  8. *APPLICATION: Electric-Arc Furnace Steelmaking
  9. *COMMENTS: fixed MPS format
  10. * encoded by Andrew Makhorin <mao@gnu.org>
  11. *
  12. NAME FURNACE
  13. ROWS
  14. N VALUE $ Price per pound (of initial charge materials)
  15. E CR $ Chromium
  16. E MN $ Manganese
  17. E SI $ Silicon
  18. E C $ Carbon
  19. E FE $ Iron
  20. E TOTCHG $ Total elements charged
  21. E CRSLAG $ Chromium-oxidized-to-slag relationship
  22. E TOTCRS $ Total modified chromium specification constraint
  23. E MN/CR $ Total manganese specification constraint
  24. E FESLAG $ Iron-oxidized-to-slag relationship
  25. G ENDFE $ Total iron specification constraint
  26. L CSPEC $ Total carbon specification constraint
  27. E BASE $ Basicity relationship
  28. L SISPEC $ Total silicon specification constraint
  29. G TOTAL $ Total end metal
  30. L TOTRS4 $ Inventory limitation on 430 grade scrap
  31. L TOTRCF $ Inventory limitation on low-carbon ferrochrome
  32. COLUMNS
  33. * Steel scrap
  34. STSCP VALUE .02
  35. CR 0
  36. MN .01
  37. SI .002
  38. C .006
  39. FE .982
  40. * 430 grade scrap
  41. SP430 VALUE .075
  42. CR .16
  43. MN .01
  44. SI .0095
  45. C .0012
  46. FE .8143
  47. TOTRS4 1
  48. * High-carbon ferrochrome
  49. HCFCR VALUE .27
  50. CR .556
  51. MN 0
  52. SI .02
  53. C .08
  54. FE .334
  55. * Low-carbon ferrochrome
  56. LCFCR VALUE .40
  57. CR .65
  58. MN 0
  59. SI .01
  60. C .0009
  61. FE .3391
  62. TOTRCF 1
  63. * Chromium initially charged
  64. CRIT VALUE 0
  65. CR -1
  66. TOTCHG 1
  67. CRSLAG 1
  68. * Manganese initially charged
  69. MNIT VALUE 0
  70. MN -1
  71. TOTCHG 1
  72. CRSLAG 1
  73. MN/CR .98
  74. * Silicon initially charged
  75. SIIT VALUE 0
  76. SI -1
  77. TOTCHG 1
  78. CSPEC -5
  79. BASE 2.14
  80. TOTAL -1
  81. * Carbon initially charged
  82. CEIT VALUE 0
  83. C -1
  84. TOTCHG 1
  85. TOTAL -1
  86. * Iron initially charged
  87. FEIT VALUE 0
  88. FE -1
  89. TOTCHG 1
  90. ENDFE 1
  91. * Total initial charge weight
  92. TICW VALUE 0
  93. TOTCHG -1
  94. CRSLAG -.074
  95. TOTCRS .074
  96. FESLAG .075
  97. CSPEC 5
  98. TOTAL 1
  99. * Modified chromium in the slag
  100. ISCR VALUE 0
  101. CRSLAG -1
  102. TOTCRS .95
  103. FESLAG -1
  104. CSPEC -.25
  105. SISPEC -.395
  106. TOTAL -.05
  107. * Chrome silicide additive at refining stage
  108. CRSI VALUE .27
  109. TOTCRS .39
  110. ENDFE .18
  111. BASE 2.7606
  112. SISPEC .43
  113. TOTAL .57
  114. * 430 grade scrap at refining stage
  115. RS430 VALUE .075
  116. TOTCRS .17
  117. MN/CR .01
  118. ENDFE .8143
  119. CSPEC 12
  120. SISPEC .0095
  121. TOTAL 1
  122. TOTRS4 1
  123. * Low-carbon ferrochrome at refining stage
  124. RCFCR VALUE .40
  125. TOTCRS .65
  126. ENDFE .3391
  127. CSPEC 9
  128. SISPEC .01
  129. TOTAL 1
  130. TOTRCF 1
  131. * Iron in the slag
  132. ISFE VALUE 0
  133. FESLAG -1
  134. ENDFE -.05
  135. CSPEC -.25
  136. SISPEC -.238
  137. TOTAL -.05
  138. * Lime at refining stage
  139. LIME VALUE .01
  140. BASE -2
  141. * Low-carbon ferrochrome at finishing stage
  142. FCFCR VALUE .40
  143. TOTCRS .65
  144. ENDFE .3391
  145. CSPEC 9
  146. SISPEC .01
  147. TOTAL 1
  148. TOTRCF 1
  149. * Slack in the chromium and manganese specifications
  150. SIS VALUE 0
  151. TOTCRS 1
  152. MN/CR 1
  153. RHS
  154. TOTCRS 3400
  155. MN/CR 200
  156. ENDFE 16200
  157. CSPEC 100000
  158. SISPEC 200
  159. TOTAL 20000
  160. TOTRS4 2000
  161. TOTRCF 2000
  162. BOUNDS
  163. UP HCFCR 2000
  164. ENDATA