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论述了南宁化工股份有限公司65 t/h、35 t/h锅炉烟气脱硫采用以自有副产废弃物电石渣作为脱硫剂的"电石渣—石膏"湿法烟气脱硫的工艺应用情况,介绍"电石渣—石膏"湿法烟气脱硫工艺的原理和关键技术,分析脱硫石膏的综合利用途径,并探讨所解决的技术问题。 相似文献
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根据某火电厂湿法烟气脱硫废水水质水量情况,详细介绍了废水处理的工艺流程和主要设备,对系统进行了调试,处理后出水水质达到《火电厂石灰石一石膏湿法脱硫废水水质控制指标》(DL/T997—2006)排水标准。 相似文献
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介绍了催化裂化装置以氢氧化镁为吸收剂的湿法烟气脱硫技术的工艺特点,对EDV湿法洗涤技术的两种吸收剂进行了分析和比较,并对BELCO公司的EDV湿法洗涤技术的应用进行了介绍,结果表明EDV湿法氢氧化镁技术具有很好的应用效果。 相似文献
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An Analysis of Contemporary Copper Recycling in China 总被引:5,自引:0,他引:5
Copper consumption increased very quickly in China in recent years, which could not be met by inland copper industry. In order to achieve a sustainable development of copper industry, an analysis of copper recycling in China was necessary. For the life cycle of copper products a copper-flow diagram with time factor was worked out and the contemporary copper recycling in China was analyzed, from which the following data were obtained. The average life cycle of copper products was 30 years. From 1998 to 2002, the use ratio of copper scraps in copper production, the use ratio of copper scraps in copper manufacture, the materials self-support ratio in copper production, and the materials self-support ratio in copper manufacture were 26.50%, 15.49%, 48.05% and 59.41%, respectively. The materials self-support ratios in copper production and manufacture declined year by year in recent years on the whole, and the latter dropped more quickly. The average index of copper ore and copper scrap from 1998 to 2002 were 0.8475 t/t and 0.0736 t/t, respectively; and copper resource efficiency was 1.1855 t/t. Some efforts should be paid to reduce copper ores consumption and promote copper scraps regeneration. Copper scraps were mostly imported from foreign countries because of shortage in recent years in China. Here the reasons related to copper scraps deficiency were also demonstrated. But we can forecast: when copper production was in a slow rise or in a steady state in China, the deficiency of copper scraps may be mitigated; when copper production was in a steady state for a very long time, copper scraps may become relatively abundant. According to the status of copper industry in China, the raw materials of copper production and manufacture have to depend on oversea markets heavily in recent years, and at the same time, the copper scraps using proportion and efficiency in copper industry should be improved. 相似文献
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铁矿石选矿中用硫酸铜和氟硅酸钠活化磁黄铁矿,使最终铁精矿合流量降至0.5%以下。指出硫酸铜和氟硅酸钠是磁黄铁矿石较好的活化剂与分散剂。 相似文献
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采用氧气湿法酸浸技术对内蒙霍格旗低品位难选硫化铜矿进行了浸铜试验,以纯氧作氧化剂,氯离子为催化剂,在密闭条件下,硫酸浸出Cu^2+,经铁屑还原制备出海绵铜。考察了矿石粒度、酸用量、固液比、温度、三氯化用铁量对铜浸出率的影响,确定了最佳浸出工艺条件,在最佳浸出工艺条件下,铜的浸出率达到98%;浸出液除杂后,采用还原铁粉置换,考察了置换时间、pH、温度和还原铁粉用量对铜单质生成的影响,在最佳置换工艺条件下,制备出的海绵铜含量为80.1%。工艺采用闭路循环,可充分利用资源,反应时间缩短,反应温度降低,且克服了火法炼铜中二氧化硫对环境的污染,为硫化铜矿的湿法冶炼开辟了一条新途径。 相似文献
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针对铜铁共生矿在先浮选铜精矿后磁选铁精矿、浮选药剂及其它对铁精矿过滤脱水产生的诸多影响因素,提出了解决的措施 相似文献
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灵山多金属硫化矿是氧化程度较高的矿石,且伴生有易浮的闪锌矿。采用铜硫部分混合浮选,以及联合使用H2SO3、ZnSO4、Na2S作闪锌矿的抑制剂,较好地解决了铜锌浮选分离问题,获得了合格的铜精矿和硫精矿。 相似文献
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文章探讨了含铜铁矿石分析过程中铜对铁分析的影响.分析过程中采用标准溶液模拟实验,国家标准物质中铁的容量分析比对等实验,得出一个大约的经验系数R,为含铜铁矿石中全铁的分析提供质量控制. 相似文献