【摘要】：研究了電解工藝制備銦微粉時(shí),銦離子濃度、電流密度和連續(xù)電解時(shí)間對粉體純度和粒度的影響。結(jié)果表明:當(dāng)電解工藝參數(shù)為NaCl濃度80 g/L,極距5 cm,硫脲濃度0.3 g/L,明膠濃度0.5 g/L,pH=2.5,添加劑聚乙烯吡咯烷酮用量為0.2 g/L時(shí),連續(xù)電解時(shí)間越長,所得粉體粒度越大;電流密度為130 A/m~2時(shí),所得粉體粒度最小,純度最高;In~(3+)濃度對粉體粒度的影響最小,但對純度影響最大;在此工藝參數(shù)和In~(3+)濃度為30 g/L,電流密度為130 A/cm~2的條件下電解1 h,可得到粒度小于100μm的銦微粉,其中粒度小于30μm的占75%,粉體純度為99.9809%。
[Abstract]:The effects of indium ion concentration, current density and continuous electrolysis time on the purity and particle size of indium powder prepared by electrolysis were studied. The results show that when the electrolysis process parameters are NaCl 80 g / L, polar distance 5 cm, thiourea 0.3 g / L, gelatin 0.5 g / L, pH 2.5, the dosage of polyvinylpyrrolidone is 0.2 g / L. The longer the continuous electrolysis time, the larger the particle size. When the current density is 130A / m ~ 2, the particle size is the smallest and the purity is the highest, and the concentration of In~ (3) has the least effect on the particle size, but the biggest effect on the purity. Under the conditions of 30 g / L In~ (3) concentration and 130 A/cm~2 current density, indium powder with particle size less than 100 渭 m can be obtained by electrolysis for 1 h, in which the particle size less than 30 渭 m is 75 and the purity of the powder is 99.9809.
【作者單位】： 青海大學(xué)青海省新型輕合金重點(diǎn)實(shí)驗(yàn)室;東北大學(xué)多金屬共生礦生態(tài)化冶金教育部重點(diǎn)實(shí)驗(yàn)室;
【基金】：青海省科技廳科技促進(jìn)計(jì)劃(2014-ZJ-781)
【分類號(hào)】：TG662

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