Abstract The complete 3Com TokenLink Velocity ISA 16/4 3C319 waste card was gasified under steam at atmospheric pressure in the allothermal process by heating up to 900 °C. The product was easily partitioned according to size and magnetic properties into 5 fractions. Each fraction was analyzed for content of metals by classical chemical route (aqua regia/ICP-OES). With exception of bulky steel parts, these fractions were also investigated by XRD and SEM-EDS methods It was found that there were no bromides in the solid product of gasification. Aqueous condensates, collected in six periods, were individually analyzed for content of bromine and potentially volatile metals (Sn, Zn, and Pb). The composition of tars and oils from condensates and proportions between contents of detected species were also evaluated (GC–MS). Condensation of the excess of steam appeared efficient in the cleaning of the gas from tars, oils, and HBr − final form of bromine. Results of the experiment were discussed and supplemented by the thermodynamic assessment of oxygen potential of the system as well as speciation and volatilization of metals and bromine. Finally, the process was shortly discussed in terms of zero-emissions + zero-waste model as well as the valorization of the waste due to transformation into metal-mineral resource enriched in valuable metals.

中文翻译：

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蒸汽下分解 ISA-card 用于已估价的多金属原料

摘要 完整的 3Com TokenLink Velocity ISA 16/4 3C319 废卡在常压蒸汽下在异热过程中通过加热至 900 °C 进行气化。根据尺寸和磁性，产品很容易分成 5 个部分。通过经典化学途径（王水/ICP-OES）分析每个馏分的金属含量。除了庞大的钢部件外，还通过 XRD 和 SEM-EDS 方法研究了这些部分。发现气化的固体产物中没有溴化物。在六个阶段收集的冷凝水分别分析溴和潜在挥发性金属（Sn、Zn 和 Pb）的含量。还评估了来自冷凝物的焦油和油的组成以及检测到的物种含量之间的比例（GC-MS）。过量蒸汽的冷凝在从焦油、油和 HBr - 溴的最终形式中清洁气体方面似乎是有效的。对实验结果进行了讨论，并通过系统氧势的热力学评估以及金属和溴的形态和挥发进行了补充。最后，从零排放 + 零废物模型以及由于转化为富含有价值金属的金属矿产资源而使废物增值的过程中进行了简短的讨论。