Tellurium


Recover rare tellurium from copper processing. Refine it into precision copper alloys, optical crystals and bismuth thermoelectrics. A small production chain with integrations for BZ, Space Age, Krastorio 2 and other material mods.

Content
8 hours ago
2.1
7
Manufacturing

Changelog

Version: 0.1.11
Date: 2026-09-20
  Bugfixes:
    - Prefer enabled and earlier usable material sources over late recipes with matching names; reject inaccessible research, recycling, barrel emptying, matter routes and net-zero returns.
    - Use actual bismuth production prerequisites instead of optional K2 enrichment; keep ordinary thermoelectrics independent of late argon and optical research.
    - Preserve coal-reduction unlocks and thermal recipe inputs/output when those recipes are bypassed.
    - Retain downstream alloy requirements when the power-regulator integration is bypassed or cannot be applied.
  Compatibility:
    - Allow the existing thermoelectric component recipe in electromagnetic plants and crystal growth in cryogenic plants, preserving the ordinary machine routes.
    - Reuse existing unlocks for optional refining, recovery and rubber improvements without adding broad upstream research gates. Native K2 copper enrichment retains its processing prerequisite.
  Locale:
    - Explain recovery rarity and refining recipes; include selected source recipes and unlocks in optional diagnostics.
    - Consolidate the current three-branch design and integration descriptions.
Version: 0.1.10
Date: 2026-09-20
  Balancing:
    - Batch Ashier scanners and spectroscopes: one optical crystal per twenty instruments, preserving all other costs and crafting time per item.
    - Keep shared helium and carbon-dioxide lasers free of Tellurium to avoid an accidental K2 advanced science surcharge; laser turrets retain their direct crystal requirement.
    - Batch HV power regulators: one tellurium copper per ten regulators, preserving upstream costs and time per item.
    - Keep rare recovery rates and refining efficiency tiers unchanged.
Version: 0.1.9
Date: 2026-09-20
  Compatibility:
    - Adapt the single optical-crystal recipe to use two bismuth glass, or ordinary glass when available.
    - Preserve the four-crystal yield, duration, water and tellurium dioxide costs; require the glass production technology.
    - Ignore recycling, matter conversion and glass sources dependent on Tellurium optics; preserve the base recipe without a safe provider.
Version: 0.1.8
Date: 2026-09-20
  Compatibility:
    - Add optional tellurium-assisted synthetic rubber for BrimStuff: 33% more rubber with a 99% returned tellurium charge.
    - Preserve source ingredients, waste, duration and machine category; unlock through existing polymer research.
    - Exclude returned tellurium from productivity and disable automatic reverse recycling.
Version: 0.1.7
Date: 2026-09-20
  Bugfixes:
    - Read researched unlock effects from technology prototypes when the mod configuration changes.
  Compatibility:
    - Peroxide extraction now uses sulfuric acid and peroxide without a separate water input, allowing ordinary chemical plants.
    - Reduce peroxide extraction to three residue per dioxide, giving it a distinct efficiency benefit over four-residue chloride extraction. Retain the eight-second duration and existing peroxide technology unlock.
Version: 0.1.6
Date: 2026-09-20
  Locale:
    - Give optional refining/recovery technologies distinct names and remove internal IDs from refining recipe names.
    - Explain the residue-saving tradeoff in the peroxide extraction tooltip.
  Balancing:
    - Consolidate copper enrichment into the existing K2 recipe with residue recovery and 25% longer processing.
    - Keep only processing, optics and thermoelectrics technologies; integrations use existing research.
  Compatibility:
    - Transfer satellite crystals into IntermediatesForYou satellite bodies while preserving the per-satellite cost.
    - Use optical crystals in LasingAround helium lasers instead of charging their scanners and spectroscopes directly.
    - Transfer laser turret crystals into carbon-dioxide lasers when consumed by the turret.
    - Add optics research prerequisites to the component technologies and respect recipe bypasses.
Version: 0.1.5
Date: 2026-09-20
  Bugfixes:
    - Recognize mined graphite and its mining fluid instead of gating early reduction behind K2 matter technology.
Version: 0.1.4
Date: 2026-09-20
  Balancing:
    - Fold available heatsinks or cooling fans into the standard thermoelectric recipe, preserving solder and increasing output to six. Remove the duplicate cooling recipe.
  Compatibility:
    - Add explicit MetalsForYou load ordering and test profiles for its full 2.1 source collection, IntermediatesForYou and GasGasGases.
Version: 0.1.3
Date: 2026-09-20
  Balancing:
    - Adapt the standard thermoelectric recipe to available solder and substrate materials instead of keeping competing equal-yield recipes.
    - Require the selected materials' production technologies before thermoelectrics.
  Locale:
    - Give the cooling-assembly recipe a readable name.
Version: 0.1.2
Date: 2026-09-20
  Graphics:
    - Added dedicated Peltier module artwork for thermoelectric components and research.
    - Replaced the bismuth telluride battery placeholder with crystalline semiconductor wafers.
Version: 0.1.1
Date: 2026-09-20
  Graphics:
    - Added original tellurium metal and optical crystal item and technology icons.
    - Replaced the blue science flask in tellurium processing and refining research.
Version: 0.1.0
Date: 2026-09-20

  Major Features:
    - Added tellurium recovery, refining, optics, alloy, and optional bismuth thermoelectric chains.
    - Added compatibility hooks for the BZ family and related Factorio 2.1 material mods.