METHOD FOR PRODUCING MINERAL WOOL

    公开(公告)号:US20230057024A1

    公开(公告)日:2023-02-23

    申请号:US17784310

    申请日:2020-12-09

    发明人: Andrea GIOIA

    摘要: The present invention relates to a method for producing mineral wool having a chemical composition, expressed as a percentage by weight of oxides, comprising: SiO2
    30-50%  Al2O3
    15-35%  CaO
    5-25% MgO
    1-25% Fe2O3
    2-15% Na2O + K2O
     >10% said method comprising providing a mixture of raw materials, melting said mixture of raw materials to obtain a molten material, and fiberizing the molten material; characterized in that the mixture of raw materials comprises at least 8.5% by weight of a recycled raw material comprising at least 3% of magnesium, expressed by weight of oxides, said recycled raw material being substantially free of carbonates, and in that the mixture of raw materials is free of dolomite and magnesia.

    Mineral fiber forming device
    3.
    发明授权

    公开(公告)号:US11117827B2

    公开(公告)日:2021-09-14

    申请号:US16166774

    申请日:2018-10-22

    发明人: Mohamed Chakroun

    IPC分类号: C03B37/04

    摘要: A mineral fiber forming device including: a centrifuge configured to rotate about a rotation axis, the centrifuge including an annular wall pierced by a plurality of orifices, the axis of symmetry of the annular wall being the rotation axis; a first annular inductor configured to heat a top part of the annular wall; a second annular inductor configured to heat a bottom part of the annular wall. The device makes it possible to increase its energy efficiency and very greatly reduce, even cancel altogether, its carbon dioxide emission level.