摘要:
以工业海绵钛为原料,研究了海绵钛碘化提纯过程中原料温度和K值对沉积速率的影响。结果表明,当K值一定时,沉积速率先随原料温度的升高而增加,而当原料温度大于600℃时,随原料温度升高沉积速率增速明显变缓。当原料温度一定时,沉积速率随K值的升高而增加。在原料温度600℃,K值80的工艺条件下,进行了多批次试验,结果表明,结晶棒直径可达23~26 mm,总收率约98%,所得可锻性高纯金属钛结晶棒产品晶粒粗大,表面光亮,沉积速率达到30 g/(h·m)左右,生产效率较高。同时,钛提纯效果显著,纯度达到4 N级以上。
关键词:
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高纯钛 /
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海绵钛 /
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碘化法 /
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沉积速率 /
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结晶棒 /
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提纯
Abstract:
In this paper,the influences of raw material temperature and K value on the average deposition rate for iodization reaction were studied using industrial sponge titanium as raw material.The results show that the deposition rate increases with raw material temperature rising at a fixed K value,while the deposition rate increases at an obviously slow trend with raw material temperature over 600 ℃.Furthermore,the deposition rate increases with increase of K value at a certain raw material temperature.At a raw material temperature of 600 ℃ and K value of 80,multi-batch trial production results show that the diameter of the obtained crystal rods is about 23～26 mm with a total yield rate of about 98% and a deposition rate of 30 g/（h·m）.Meanwhile,the prepared forgeable high-purity metallic titanium owns a thick grain size,shining surface and a purity higher than 99.99%,showing an excellent purification effect.
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