ABSTRACT Dissolution behaviour of metals in Ni–Mo hydrodesulphurization catalyst waste was investigated in a 1 L jacketed glass reactor. Samples were roasted at 500°C in a tube furnace for the removal of C and S prior to the dissolution experiments. It was determined that roasted samples consisted of mainly 27.692% Al, 20.238% Mo, 5.267% Ni and 4.331% P. Unmilled samples were used for dissolution experiments because dissolution experiments carried out with milled and unmilled samples showed that milling has no significant effect on the dissolution rate. Oxalic acid solutions with 0.25–1 M, reaction temperatures of 25–70°C and solid to liquid ratios of 10–100 g L−1 were used as experimental parameters. It was found that the dissolution behaviour of Ni is different from Al, Mo and P. 92% of Mo, 19% of Ni, 28% of Al and 72% of P were dissolved at optimum dissolution conditions.

中文翻译：

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在草酸溶液中从废镍钼加氢脱硫 (HDS) 催化剂中提取钼、镍和铝

摘要 在 1 L 夹套玻璃反应器中研究了金属在 Ni-Mo 加氢脱硫催化剂废料中的溶解行为。在溶解实验之前，样品在管式炉中在 500°C 下烘烤以去除 C 和 S。经测定，焙烧样品主要由 27.692% Al、20.238% Mo、5.267% Ni 和 4.331% P 组成。未研磨样品用于溶解实验，因为用研磨和未研磨样品进行的溶解实验表明研磨对溶解速率。0.25-1 M 的草酸溶液、25-70°C 的反应温度和 10-100 g L-1 的固液比用作实验参数。发现Ni的溶解行为不同于Al、Mo和P。92%的Mo，19%的Ni，