湿法炼锌低钴硫酸锌溶液两段连续深度净化工业实践

通过试验室研究提出了两段净化工艺,并在年产60 000 t电锌的湿法炼锌系统上实现了工业生产。该工艺一段净化温度为65~70℃,二段净化温度为43~46℃,与传统的锌粉锑盐净化法相比,具有能耗低、净化深度高、锌粉耗量低、劳动条件好的特点。     

超声压电马达用陶瓷材料的研究

研究了钡锶锑锰等离子掺杂对锆钛酸铅(PZT)系压电陶瓷的介电、压电性能和体积密度的影响。实验结果表明:对于Pb0.95Ba0.03Sr0.02(Zr1-yTiy)O3+xwt%MnSb2O6(PBSZTMS),在x=1.5、Zr/Ti=52/48附近获得了优越的压电活性。对于Pb0.95Ba0.03Sr0.02(MnSb2O6)x/3(Zr54Ti46)1-xO3(PBSMSZT),综合性能较好的组成点出现在x=0.05处。对于PbaBabSrc(MnSb2O6)x/3(Zr1-yTiy)1-xO3+zwt%MnSb2O6系列配方,发现Sr2+和Ba2+的共同添加会使样品致密度降低,介电常数、介质损耗和压电常数增加;当a=1,b=0,c=0,x=0.03,y=0.48,z=0.76时,获得了综合性能较好的陶瓷材料,有望应用于大功率超声压电马达器件领域。     

锌浸出渣综合回收铟的工艺改进与生产实践

叙述了从锌浸出渣中综合回收铟的生产实践。通过技术改进,有效地解决了铟浸出率低、有机相易乳化的问题,提高了铟的回收率。     

Removing chlorine of CuCl residue from zinc hydrometallurgy by microwave roasting

Most Zn hydrometallurgy factories adopt Cu2SO4 as a dechlorination reagent from zinc solution nowadays, thus much CuCl residue is produced. The existing process of treating this residue is washing with water or sodium carbonate solution, which would cause a lot of troubles to water treatment and waste discharge. A method of microwave roasting was adopted for dechlorination of CuCl residue. A 1.5 kW microwave roasting equipment with dust collection and tail gas adsorption systems was set up and applied during the experiment. By investigating the effect of temperature, heat preservation time, moisture content of raw material and grain size of samples on the dechlorination, the optimal experimental condition is obtained. When the samples with 2% moisture and 〈150 μm grain size are microwave roasted at 400 °C for 2 h, the Cl content turns from 14.27% to 1.35% and the dechlorination rate is as high as 90%, while that with conventional heating is only 60%-80%. The phase change of the roasting process investigated with X-ray diffraction verifies that CuCl in CuCl residue is removed by being transformed into CuO.     

特种镁铝铬复合尖晶石砖的研制及应用

采用镁铝铬复合尖晶石及电熔镁砂为主要原料,加入特殊添加剂生产而成的特种镁铝铬复合尖晶石砖,具有抗侵蚀、耐磨损、抗剥落、与锌浸出渣亲和能力强等特性.经云南蒙自矿冶铟锌厂Φ4.15×58 m大型锌挥发窑反应带应用,寿命达到319 d,取得了目前国内大型锌挥发窑的最长应用周期.     

锌冶炼废水零排放工艺技术与实践

介绍了蒙自矿冶有限责任公司铟锌冶炼厂废水处理工艺,通过石灰-铁盐法对废水进行预处理,再经电化学、微滤、膜组合深度处理,处理后水达到地表水三类标准,全部回用于生产,解决了系统氯、钠、钙、镁等离子积累及生产系统溶液体积平衡问题.