PROCESS FOR OBTAINING CAO-MGO BINDERS AND CONSTRUCTION PRODUCTS WITH REUSE OF SUBPRODUCTS AND/OR RESIDUES AND ABSORPTION OF CARBON DIOXIDE

    公开(公告)号:EP3831795A1

    公开(公告)日:2021-06-09

    申请号:EP19765821.4

    申请日:2019-07-29

    IPC分类号: C04B28/08 C04B28/10 C04B40/02

    摘要: The present invention is related to the process of obtaining CaO-MgO binders and construction products, with reuse of subproducts and/or residues and carbon dioxide, by compression molding (6). The binders are produced by crushing and grinding. The process of manufacturing the products consists of mixing binders and subproducts and/or residues with residual non-potable water (5), and curing this mixture with carbon dioxide (7), under constant humidity, temperature and pressure conditions. The process of hardening is carried out by recirculating carbon dioxide in a closed circuit, followed by drying of the products (12). The subproducts and/or residues contain calcium and magnesium and may be slag from the steel manufacturing industry or sand and mud resulting from the pulp, paper and cardboard production industry. The construction products may include other residues and materials containing silica and aluminum.

    FILAMENT PRODUCTION DEVICE AND METHOD
    3.
    发明公开

    公开(公告)号:EP3603932A1

    公开(公告)日:2020-02-05

    申请号:EP18723055.2

    申请日:2018-03-23

    摘要: The present invention refers to a device that recycles thermoplastics for producing a filament for fused deposition modelling devices (FDM) and respective operating method.
    The crushed thermoplastic is introduced into the hopper (4), pushed by a screw, driven by the motor (1), inside the barrel (5), whose axial force is sustained by the axial bearing (2). The thermoplastic is melted with the assistance of electrical heating resistors (6) and passes through a degassing zone (7) connected to the vacuum pump (3). The thermoplastic is forced through the die (8), being cooled on a cooling tray (9) having a water circulation system (12). The diameter of the filament is controlled by the puller (11) based on the data obtained in the measurement system of the filament diameter (10). A microcontroller controls the entire process.