【作者】 高楠；

【导师】 丁忠浩；

【作者基本信息】 武汉科技大学 ， 环境工程， 2005， 硕士

【摘要】 炼铜烟灰中含有铅、铜、锌、铋、锑等多种有价成分,提高对炼铜烟灰综合利用效率,对我国建设节约型社会,实现可持续发展具有重要的意义。针对黄石大江集团综合加工厂炼铜烟灰综合回收生产过程中存在的突出问题,对烟灰水洗料浆的脱水进行了系统的研究,并对水洗工艺进行了初步研究。研究的主要内容是:(1)利用现代分析手段对烟灰的粒度组成、比表面积、密度、形态、组成元素、水溶液体系中颗粒的表面电性质等物料性能进行了全面分析; (2)系统考查了多种助滤剂、温度、过滤方式等对烟灰水洗料浆脱水的影响; (3)初步考查了温度、液固比、pH值对铜、锌等金属元素浸出率的影响; (4)在研究结果的基础上提出了一些技改方案,并进行了工业实验。得到一些结论并提出了有益的建议:(1)烟灰粒度微细,比表面积大,表面水含量高,这是滤饼水分降低困难的最主要原因; (2)阳离子型表面活性剂、焦炭粉对于降低滤饼水分作用较大; (3)通过对现场水洗加温和板框压滤机增加压力吹风,滤饼水分比改造前大大降低; (4)提高水洗温度、降低pH值等有利于提高金属浸出率。更多还原

【Abstract】 In the copper-smelting dust includes many kinds of valuable ingredients, such as lead, copper, zinc, bismuth, stibium. Enhancing comprehensive utilization efficiency of the copper-smelting dust, which has vital significance to constructs a conservation-minded society and achieves sustainable development in our country. According to outstanding problem in comprehensive recycling and production process of Huangshi Dajiang Group, dewatering of copper-smelting dust leaching pulp is researched in this project, and leaching process of leaching technology is preliminarily studied. This research conclude:(1) Granularity composition, specific surface area, density, configuration, composition element, and surface characteristics in solution are completely analysed by modern analysis method.(2) The influence of many kinds of filter aids , temperature and filter method on dewatering of copper-smelting dust leaching pulp are systemically studied.(3)The influence of temperature, ratio of liquid to solid and pH on leaching ratio of copper and zinc are preliminarily studied.(4) Some technological innovation plans are proposed based on the research results, and industrial experiment have been carried on. This research obtained some conclusions and put forward some beneficial proposal:(1) The granularity of dust is very tiny, the dust has high specific surface area and surface water, those are the most reasons to hardly reduce moisture content of filter cake.(2)Cationic surfactant and coke are benefic to decrease the moisture gradient of cake.(3)According to increase the temperature of leaching process and pressure of plate-and-frame type filter press, the moisture gradient of cake is decreased contrast to before.(4)Increasing the temperature of leaching process and decreasing pH are benefic to increase leaching efficiency of metal element.更多还原