{
  "kind": "chemfield-production-chain",
  "schemaVersion": "chemfield-production-chain-v1",
  "note": "Economy + material config for the Slag Run game (upstream of the Speciation Quest). Time is measured in game-days; 1 week = 1 game-day. Numbers are gameplay-tuned but grounded in real hydrometallurgy (finer comminution -> more surface area -> higher recovery AND faster leaching) and the real Dutch context (Ekoliet 0/8mm steel-slag aggregate; steel slag in Amsterdamse Bos path foundations and Zeeland/Oosterschelde bank protection). Blocks player/tanks/agitation/largeEquipment are forward-looking mechanics specced in docs/slag-run-game-design.md and tracked in the backlog; the v1 game + validator use research/feedstocks/comminution/leach/product.",
  "time": {
    "unit": "day",
    "note": "1 real week = 1 game-day"
  },
  "research": {
    "grantEur": 3000,
    "leadTimeDays": 4,
    "title": "Onderzoeksbudget staalslak-valorisatie",
    "flavor": "Big Chemistry Startup (Oost NL) — aanvraag voor vanadium-terugwinning uit staalslak. Toekenning duurt 4 weken.",
    "note": "Grant unlocks ordering graded ekoliet feedstock; foraging is free without it."
  },
  "feedstocks": [
    {
      "id": "feed:ekoliet",
      "name": "Ekoliet 0/8mm",
      "requiresBudget": true,
      "bucketKg": 12.5,
      "gradingMm": "0/8",
      "startSizeMm": 8,
      "pricePerBucketEur": 45,
      "deliveryDays": 2,
      "vanadiumMassFraction": 0.012,
      "note": "Gecertificeerd Nederlands staalslak-granulaat (0/8mm), consistente V-graad; besteld op onderzoeksbudget."
    },
    {
      "id": "feed:amsterdamse-bos",
      "name": "Amsterdamse Bos (paden)",
      "requiresBudget": false,
      "bucketKg": 5,
      "gradingMm": "onregelmatig",
      "startSizeMm": 16,
      "travelDays": 1,
      "maxBuckets": 3,
      "labour": "dig",
      "vanadiumMassFraction": 0.009,
      "note": "Staalslak uit padfunderingen opgraven; korte reis, kleine oogst, grovere brokken. Graven bouwt spiermassa."
    },
    {
      "id": "feed:zeeland-waterwal",
      "name": "Zeeland waterwallen (Oosterschelde)",
      "requiresBudget": false,
      "bucketKg": 5,
      "gradingMm": "onregelmatig",
      "startSizeMm": 24,
      "travelDays": 3,
      "maxBuckets": 6,
      "labour": "haul",
      "vanadiumMassFraction": 0.01,
      "note": "Slak van de oeverbestorting oppakken; lange reis, grotere oogst, sterk verweerde grove brokken. Sjouwen bouwt spiermassa."
    }
  ],
  "comminution": [
    {
      "id": "mill:hand-hammer",
      "name": "Handhamer",
      "costEur": 0,
      "mediaCostEur": 0,
      "outputSizeMm": 8,
      "daysPerBucket": 1.5,
      "labour": "hammer",
      "note": "Gratis, traag, blijft grof (~8mm). Hameren bouwt spiermassa."
    },
    {
      "id": "mill:hammer-mill",
      "name": "Hamermolen",
      "costEur": 2000,
      "mediaCostEur": 0,
      "outputSizeMm": 2,
      "daysPerBucket": 0.25,
      "note": "Snel, kapitaalintensief, tot 2mm."
    },
    {
      "id": "mill:ball-mill",
      "name": "Balmolen + V/Cr-maalballen",
      "costEur": 200,
      "mediaCostEur": 500,
      "mediaNote": "vanadium-chromium maalballen",
      "outputSizeMm": 0.1,
      "daysPerBucket": 1.0,
      "note": "Goedkoop apparaat, dure media; traag maar fijn tot 0.1mm."
    },
    {
      "id": "mill:large-hammer-mill",
      "name": "Grote hamermolen",
      "costEur": 6000,
      "mediaCostEur": 0,
      "outputSizeMm": 2,
      "daysPerBucket": 0.1,
      "tier": "industrial",
      "note": "Hoge doorzet tot 2mm; verlaagt maaltijd per emmer sterk."
    },
    {
      "id": "mill:large-ball-mill",
      "name": "Grote balmolen",
      "costEur": 10000,
      "mediaCostEur": 500,
      "mediaNote": "vanadium-chromium maalballen",
      "outputSizeMm": 0.1,
      "daysPerBucket": 0.4,
      "tier": "industrial",
      "note": "Hoge doorzet tot 0.1mm; combineert fijnheid met snelheid."
    }
  ],
  "leach": {
    "note": "Recovery vs. particle size (surface-area driven). Interpolated between points; finer = higher.",
    "yieldBySizeMm": [
      {
        "sizeMm": 24,
        "recovery": 0.2
      },
      {
        "sizeMm": 8,
        "recovery": 0.35
      },
      {
        "sizeMm": 2,
        "recovery": 0.65
      },
      {
        "sizeMm": 0.5,
        "recovery": 0.82
      },
      {
        "sizeMm": 0.1,
        "recovery": 0.92
      }
    ],
    "timeModel": {
      "daysPer0_1mmAt20C": 1,
      "referenceTempC": 20,
      "note": "Leach time scales with particle size: at 20 C the batch needs 1 game-day (1 week) per 0.1mm of the coarsest feed. So 0.1mm -> 1 day, 2mm -> 20 days, 8mm -> 80 days. Fine milling trades mill-time for a massive leach-time saving."
    },
    "liquidSolidRatio_l_per_kg": 3,
    "liquidSolidNote": "Vulvolume per batch ≈ slag_kg × L/S. Ontwerpwaarde 3 L/kg (bench-loging staalslak ~2–10 L/kg); begrenst batchgrootte op tankvolume. Zie docs/vanadium-recovery-from-steel-slag.md (L/S-lever)."
  },
  "tanks": [
    {
      "id": "tank:flat-80l",
      "name": "Platte loogbak 80L",
      "litres": 80,
      "dims_cm": [
        100,
        60,
        20
      ],
      "material": "flexibel kunststof",
      "liftableMaxFillL": 40,
      "note": "Lange bak; boven 40L vulling te slap/zwaar om op te tillen -> geen tilagitatie. emptyKg = ontwerpwaarde (leeg vat, flexibel kunststof).",
      "emptyKg": 3.5
    },
    {
      "id": "tank:tall-40l",
      "name": "Bak 40L",
      "litres": 40,
      "dims_cm": [
        50,
        40,
        40
      ],
      "material": "flexibel kunststof",
      "liftableMaxFillL": 40,
      "note": "Halve lengte, hoger; volledige vulling nog optilbaar. emptyKg = ontwerpwaarde (leeg vat, flexibel kunststof).",
      "emptyKg": 2.0
    }
  ],
  "agitation": {
    "note": "Manual lift-agitation speeds/improves leaching but sloshes: some leachate is lost and the site is contaminated. Liftability is gated by fill volume (tank.liftableMaxFillL) AND player strength vs the filled weight (see player + physics).",
    "leachTimeMultiplierWhenAgitated": 0.7,
    "recoveryBonusWhenAgitated": 0.05,
    "slosh": {
      "leachateLossFraction": 0.03,
      "contaminationPerLift": 1,
      "note": "Per manual agitation: ~3% leachate loss + 1 site-contamination point (cleanup cost / reputation)."
    }
  },
  "player": {
    "strengthStart": 20,
    "strengthPerLabourAction": 0.5,
    "strengthCapNote": "Muscle mass grows with physical labour: digging (Amsterdamse Bos), hauling (Zeeland), hammering (hand hammer), and lifting tanks each add strength. Higher strength raises the mass you can lift.",
    "liftForceModel": "Max liftable mass (kg) ~ strength; a filled tank's mass = tank empty mass + fill_litres * bulk_density. Gravity g = 9.81 m/s^2 used for the effort/energy readout."
  },
  "physics": {
    "gravity_m_s2": 9.81,
    "slagBulkDensity_kg_per_l": 1.8,
    "leachateDensity_kg_per_l": 1.15,
    "note": "Bulk density of granular steel slag ~1.6-2.0 kg/L; pregnant leach solution ~1.1-1.2 kg/L. Used to turn fill volume into a liftable weight the player's strength is checked against."
  },
  "autoclave": {
    "id": "equip:autoclave",
    "name": "Autoclaaf (druk/temp-loging)",
    "costEur": 7000,
    "leachTempC": 150,
    "note": "Pressure/temperature leaching: sharply higher recovery and far shorter leach time than 20 C atmospheric, without manual lift-agitation. Alternative capital-intensive route to the fine-mill+agitate path.",
    "recoveryFloor": 0.9,
    "leachTimeDaysPerBatch": 1
  },
  "product": {
    "v_to_v2o5_factor": 1.785,
    "note": "Recovered V mass -> V2O5 mass (stoichiometric). V2O5 output feeds the Speciation Quest electrolyte refinement.",
    "kwhPerKgV2O5": 0.9,
    "kwhNote": "Rough VRFB electrolyte capacity proxy for scoring."
  }
}