{
  "node": {
    "id": "term:sieving",
    "type": "Term",
    "label": "Sieving and classification",
    "properties": {
      "id": "sieving",
      "name": "Sieving and classification",
      "aka": [
        "screening",
        "size classification"
      ],
      "section": "topic-recycling",
      "definition": "Splitting shredded material by particle size: the fine fraction is mostly black mass, the coarse fractions mostly foil, casing and separator. Air classifiers do the same by size and density in a gas stream.",
      "related": [
        "mechanical-pretreatment",
        "black-mass",
        "density-separation"
      ],
      "url": "https://lemonergy.com/learn/glossary/sieving/",
      "mentions": [
        "separator",
        "particle-size"
      ]
    }
  },
  "edges": [
    {
      "id": "edge:4293",
      "source": "term:sieving",
      "target": "topic:topic-recycling",
      "type": "belongsTo",
      "properties": {
        "sourceFile": "terms.json"
      }
    },
    {
      "id": "edge:4294",
      "source": "term:sieving",
      "target": "term:mechanical-pretreatment",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:4295",
      "source": "term:sieving",
      "target": "term:black-mass",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:4296",
      "source": "term:sieving",
      "target": "term:density-separation",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:mentions/sieving/separator",
      "source": "term:sieving",
      "target": "term:separator",
      "type": "mentions",
      "properties": {
        "sourceFile": "terms.json",
        "method": "build_glossary.mention_index + mentions",
        "field": "definition",
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      "id": "edge:mentions/sieving/particle-size",
      "source": "term:sieving",
      "target": "term:particle-size",
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    {
      "id": "topic:topic-recycling",
      "type": "Topic",
      "label": "Recycling and end of life",
      "properties": {
        "id": "topic-recycling",
        "name": "Recycling and end of life",
        "lede": "What happens to a battery after its first life: reuse, and the recycling routes that recover its materials, step by step.",
        "context": "Distinguish recovered material from a qualified product.",
        "example": "High mass recovery alone does not establish battery-grade purity or refining energy demand.",
        "lesson_url": "https://lemonergy.com/learn/fundamentals/cell-production/",
        "lesson_label": "Open process context"
      }
    },
    {
      "id": "term:mechanical-pretreatment",
      "type": "Term",
      "label": "Mechanical pre-treatment",
      "properties": {
        "id": "mechanical-pretreatment",
        "name": "Mechanical pre-treatment",
        "aka": [
          "mechanical processing"
        ],
        "section": "topic-recycling",
        "definition": "The front end of most recycling plants: shredding cells or modules, drying off the electrolyte and separating the stream into casings, copper and aluminium foil, plastics and black mass. How cleanly this is done sets the purity, and the cost, of everything downstream.",
        "related": [
          "shredding",
          "sieving",
          "magnetic-separation",
          "eddy-current-separation",
          "black-mass",
          "hydrometallurgy"
        ],
        "url": "https://lemonergy.com/learn/glossary/mechanical-pretreatment/",
        "mentions": [
          "aluminium-foil",
          "electrolyte",
          "drying"
        ]
      }
    },
    {
      "id": "term:black-mass",
      "type": "Term",
      "label": "Black mass",
      "properties": {
        "id": "black-mass",
        "name": "Black mass",
        "section": "topic-recycling",
        "definition": "The dark powder of mixed electrode materials left after end-of-life cells are discharged, shredded and separated from their casings, foils and separators. It is the traded intermediate that hydrometallurgical refiners buy.",
        "related": [
          "recycling",
          "hydrometallurgy",
          "pyrometallurgy",
          "mechanical-pretreatment",
          "froth-flotation"
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        "url": "https://lemonergy.com/learn/glossary/black-mass/",
        "mentions": [
          "electrode"
        ]
      }
    },
    {
      "id": "term:density-separation",
      "type": "Term",
      "label": "Density separation",
      "properties": {
        "id": "density-separation",
        "name": "Density separation",
        "aka": [
          "air classification",
          "zig-zag sifter",
          "sink-float"
        ],
        "section": "topic-recycling",
        "definition": "Separating materials by density in air or liquid: light separator and plastic film rise or float, heavier copper, aluminium and electrode fragments fall or sink.",
        "related": [
          "sieving",
          "eddy-current-separation",
          "mechanical-pretreatment"
        ],
        "url": "https://lemonergy.com/learn/glossary/density-separation/",
        "mentions": [
          "electrode",
          "separator"
        ]
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    },
    {
      "id": "term:separator",
      "type": "Term",
      "label": "Separator",
      "properties": {
        "id": "separator",
        "name": "Separator",
        "section": "topic-electrolytes",
        "definition": "A porous, electronically insulating film between the electrodes. Electrons cannot cross it; ions move through the electrolyte in its pores.",
        "related": [
          "electrolyte",
          "ceramic-coated-separator",
          "separator-shutdown",
          "internal-short-circuit",
          "porosity"
        ],
        "lesson": "fundamentals/cell-architecture/#separator",
        "example": {
          "title": "Different conduction paths",
          "text": "A separator prevents direct electronic contact while permitting ionic transport through its electrolyte-filled structure."
        },
        "url": "https://lemonergy.com/learn/glossary/separator/",
        "mentions": []
      }
    },
    {
      "id": "term:particle-size",
      "type": "Term",
      "label": "Particle size",
      "properties": {
        "id": "particle-size",
        "name": "Particle size",
        "aka": [
          "D50"
        ],
        "section": "topic-transport",
        "definition": "The diameter of active-material particles, usually quoted as D50, the median, in micrometres. Small particles shorten the solid diffusion path and favour power; large ones pack densely and favour energy and stability.",
        "unit": "µm",
        "related": [
          "solid-state-diffusion",
          "specific-surface-area",
          "rate-capability",
          "single-crystal"
        ],
        "url": "https://lemonergy.com/learn/glossary/particle-size/",
        "mentions": [
          "diffusion"
        ]
      }
    }
  ]
}