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Use of mix of clay/solid waste from steel works for civil construction materials

机译：将钢厂的粘土/固体废物混合物用于民用建筑材料

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The present study focuses on the use of solid waste generated by the steel works in Brazil for manufacturing clay-based structural products. The waste sample was characterized regarding chemical composition, X-ray diffraction, particle size, morphology, specific surface and plastic properties. The waste was added in gradual proportions to a kaolinitic clay from zero up to 3 wt. percent. Ceramic bodies were formed by vacuum extrusion and fired at 950 deg C. The physical-mechanical properties (linear shrinkage, water absorption, apparent density and flexural strength) of the resulting clay/solid waste mixtures were determined. In addition, leaching tests were performed according Brazilian Standards as well as a preliminary analysis of gases evolved during the thermal process. It was found that the solid waste is formed by irregular particles, ranging in size from 1 to 500 mum. The test results indicate that solid wastes generated by steel works can be used as filler in construction materials, thereby increasing reuse in an environmentally safe manner.
机译：本研究的重点是将巴西钢铁厂产生的固体废物用于生产粘土基结构产品。对废物样品的化学成分，X射线衍射，粒度，形态，比表面和塑性进行了表征。将废物从零到3 wt。％逐步添加到高岭土中。百分。通过真空挤出形成陶瓷体并在950℃下烧制。测定所得粘土/固体废物混合物的物理机械性能（线性收缩，吸水率，表观密度和抗弯强度）。此外，根据巴西标准进行了浸出测试，并对热过程中产生的气体进行了初步分析。发现该固体废物是由不规则的颗粒形成的，其大小为1至500μm。测试结果表明，钢铁厂产生的固体废物可以用作建筑材料的填料，从而以对环境安全的方式增加再利用。

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