In this study, the deoxidation process for off-grade titanium (Ti) sponge using magnesium (Mg) metal with a wire mesh strainer type of crucible was developed. Ti hydride (TiH₂) feedstock, which was prepared by hydrogenating off-grade Ti sponge, was deoxidized using Mg in a molten magnesium chloride–potassium chloride salt at 933 K under an argon and 20% hydrogen (H₂) mixed gas atmosphere. After deoxidation, the residual Mg-containing salt was separated in situ from the crucible to investigate the feasibility of minimizing salt loss during the leaching and production of pure TiH₂. The results showed that the presence of residual Mg-containing salt inside the crucible strongly influenced whether a mixture of Ti and TiH₂ or pure TiH₂ was produced. When the salt was not sufficiently separated, a mixture of Ti and TiH₂ was obtained and its oxygen (O) concentration was 0.121 mass% under certain conditions. Meanwhile, pure TiH₂ was obtained by increasing the H₂ gas flow rate during deoxidation. Therefore, these results demonstrate that the decrease of O concentration to below 0.180 mass% and the minimal loss of the salt are feasible.

在这项研究中，开发了使用镁（Mg）金属和丝网过滤器型坩埚对不合格海绵钛（Ti）进行脱氧的工艺。通过氢化劣质海绵钛制备的氢化钛（TiH ₂ ）原料，在氩气和20%氢气（H ₂ ）混合气体气氛下，在933 K熔融氯化镁-氯化钾盐中使用镁进行脱氧。脱氧后，将残留的含镁盐从坩埚中原位分离，以研究在浸出和生产纯TiH ₂过程中最大限度地减少盐损失的可行性。结果表明，坩埚内部残留的含镁盐的存在强烈影响是否产生Ti和TiH ₂的混合物或纯TiH ₂ 。当盐未充分分离时，得到Ti和TiH ₂的混合物，并且在一定条件下其氧(O)浓度为0.121质量％。同时，通过增加脱氧过程中的H ₂气体流量，得到纯TiH ₂ 。因此，这些结果表明，将 O 浓度降低至 0.180 质量％以下并且将盐的损失降至最低是可行的。