真空冶金法回收WC-Co硬质合金废料的研究

发布时间：2018-04-16 14:01

本文选题：真空冶金 + WC-Co硬质合金废料　；参考：《有色金属(冶炼部分)》2017年12期

【摘要】：通过热力学计算,从理论上分析了1 550~2 000℃、压力小于1.73Pa的条件下,采用真空冶金法可以从WC-Co硬质合金废料中分离WC硬质相和钴黏结相。随后,以钴含量为3%~15%的WC-Co硬质合金废料为原料进行了钴含量对钴挥发率、纯度以及对WC粉末质量影响的研究。结果表明,钴挥发率随原料钴含量的增大先增大后减小,钴含量为8%时钴挥发率达最大值86.63%;原料钴含量对金属钴的纯度无明显规律性影响,钴含量为12%时金属钴纯度达最大值99.95%。WC粉末的XRD谱显示,当原料钴含量为3%和15%时出现钴衍射峰,有钴残留,原料钴含量为5%、8%及12%时未出现钴衍射峰,各次试验均未出现W2C相,无明显脱碳;WC粉末的SEM形貌显示,粉末呈近球形,表面光滑,粒径为1~8μm。试验制得了合格WC粉末和金属钴。
[Abstract]:The cobalt content of WC - Co cemented carbide was studied by thermodynamic calculation . The results showed that the cobalt content of WC - Co cemented carbide was up to 86.63 % when the cobalt content was 3 % and 15 % , and the cobalt content was 8 % . The cobalt content was about 5 % , the cobalt content was 5 % , the cobalt content was 8 % and 12 % . The results showed that the cobalt content was about 5 % , the cobalt content was 5 % , the cobalt content was 8 % and 12 % . The results showed that the cobalt content was about 5 % , the cobalt content was 5 % , the cobalt content was 8 % and 12 % .

【作者单位】：国家钨与稀土产品质量监督检验中心;江西省钨与稀土产品质量监督检验中心;江西省钨与稀土研究院;
【分类号】：TF816;TQ136.13

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