Supply chain — recupero polveri Si3N4 da scarti PECVD solare

flowchart LR activatedCarbonProductionPipeline["produzione carbone attivo (attivazione a vapore)"] ammoniaHaberBoschUreaPipeline["Ammonia Haber-Bosch + urea pipeline"] cokeFromCoalPipeline["Filiera coke da carbone"] crudeOilDistillationPipeline["raffineria petrolio (CDU + VDU)"] fccPipeline["cracking catalitico (FCC)"] ferrochromePipeline["ferrocromo da cromite"] ferromanganesePipeline["ferromanganese da pirolusite"] ferrosiliconPipeline["ferrosilicio da quarzo + rottame ferro"] hydratedLimePipeline["Filiera calce idratata"] ironOreMiningPipeline["estrazione + beneficio minerale di ferro"] leadImperialSmeltingPipeline["Filiera piombo Imperial Smelting"] limestoneQuarryingPipeline["estrazione cava calcare"] metallurgicalSiliconPipeline["Filiera silicio metallurgico"] portlandCementPipeline["Filiera cemento Portland"] siliconNitrideRecoveryPipeline["★ recupero polveri Si3N4 da scarti PECVD solare"]:::root solarCellPipeline["cella solare Si PERC (wafer Czochralski)"] solvaySodaAshPipeline["Filiera soda Solvay"] stainlessSteelPipeline["acciaio inossidabile (via AOD)"] steelBFBOFPipeline["Filiera acciaio (altoforno + BOF)"] steelDRIH2EAFPipeline["Filiera acciaio DRI-H2 + EAF"] tinFromCassiteritePipeline["stagno da cassiterite (carbotermico)"] tio2ChlorideRoutePipeline["TiO2 pigmento via cloruri"] titaniumKrollPipeline["titanio processo Kroll"] solarCellPipeline -->|nitruro di silicio SiNx (| siliconNitrideRecoveryPipeline metallurgicalSiliconPipeline -->|silicio| solarCellPipeline steelBFBOFPipeline -->|coke| metallurgicalSiliconPipeline cokeFromCoalPipeline -->|coke| metallurgicalSiliconPipeline fccPipeline -->|coke| metallurgicalSiliconPipeline ferrosiliconPipeline -->|quarzo| metallurgicalSiliconPipeline cokeFromCoalPipeline -->|coke| steelBFBOFPipeline fccPipeline -->|coke| steelBFBOFPipeline steelDRIH2EAFPipeline -->|acciaio| steelBFBOFPipeline solvaySodaAshPipeline -->|lime| steelBFBOFPipeline hydratedLimePipeline -->|lime| steelBFBOFPipeline portlandCementPipeline -->|lime| steelBFBOFPipeline ironOreMiningPipeline -->|pellet| steelBFBOFPipeline limestoneQuarryingPipeline -->|CaCO3| steelBFBOFPipeline ammoniaHaberBoschUreaPipeline -->|carbon monoxide| steelBFBOFPipeline activatedCarbonProductionPipeline -->|carbon monoxide| steelBFBOFPipeline tio2ChlorideRoutePipeline -->|carbon monoxide| steelBFBOFPipeline ferrosiliconPipeline -->|carbon monoxide| steelBFBOFPipeline ferrochromePipeline -->|carbon monoxide| steelBFBOFPipeline stainlessSteelPipeline -->|carbon monoxide| steelBFBOFPipeline metallurgicalSiliconPipeline -->|carbon monoxide| steelBFBOFPipeline tinFromCassiteritePipeline -->|carbon monoxide| steelBFBOFPipeline leadImperialSmeltingPipeline -->|carbon monoxide| steelBFBOFPipeline titaniumKrollPipeline -->|carbon monoxide| steelBFBOFPipeline ferromanganesePipeline -->|carbon monoxide| steelBFBOFPipeline steelBFBOFPipeline -->|coke oven gas COG| cokeFromCoalPipeline leadImperialSmeltingPipeline -->|gas di altoforno| cokeFromCoalPipeline crudeOilDistillationPipeline -->|gasolio sotto vuoto (VGO)| fccPipeline steelBFBOFPipeline -->|coke| ferrosiliconPipeline cokeFromCoalPipeline -->|coke| ferrosiliconPipeline fccPipeline -->|coke| ferrosiliconPipeline classDef root fill:#ffd966,stroke:#333,stroke-width:2px;