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401.
以某未知样品为研究对象,综合样品外观及物理、化学等特性,分析得出样品具有和铜冶炼渣一致的特征,含有特征物相——铁橄榄石,成分与铜精炼炉渣类似,而且其碳含量较高,含有少许金属铜,可以判断样品为铜;台炼渣。经过破碎、研磨、浮选得篓Ⅱ精炼渣(铜精矿),可作为炼铜原料投入生产。 相似文献
402.
403.
This study may be the first investigation to be performed into the potential benefits of recycling industrial waste in controlling
contaminants in leachate. Batch reactors were used to evaluate the efficacy of waste steel scrap and converter slag to treat
mixed contaminants using mimic leachate solution. The waste steel scrap was prepared through pre-treatment by an acid-washed
step, which retained both zero-valent iron site and iron oxide site. Extensive trichloroethene (TCE) removal (95%) occurred
by acid-washed steel scrap within 48 h. In addition, dehalogenation (Cl− production) was observed to be above 7.5% of the added TCE on a molar basis for 48 h. The waste steel scrap also removed
tetrachloroethylene (PCE) through the dehalogenation process although to a lesser extent than TCE. Heavy metals (Cr, Mn, Cu,
Zn, As, Cd, and Pb) were extensively removed by both acid-washed steel scrap and converter slag through the adsorption process.
Among salt ions (NH4+, NO3−, and PO43−), PO43− was removed by both waste steel scrap (100% within 8 h) and converter slag (100% within 20 min), whereas NO3- and NH4+ were removed by waste steel scrap (100% within 7 days) and converter slag (up to 50% within 4 days) respectively. This work
suggests that permeable reactive barriers (PRBs) with waste steel scrap and converter slag might be an effective approach
to intercepting mixed contaminants in leachate from landfill. 相似文献
404.
利用燃煤炉渣直接过滤锅炉湿法除尘废水,可以提高出水水质,对废水中SS、COD和HSO4^-有显著去除效果,出水可以满足循环回用要求。 相似文献
405.
J. C. Chuang Y. C. Lan Y. S. Hsu S. L. Chuang S. R. Liaw C. S. Chang 《Chemistry and Ecology》1995,10(1):97-104
This study introduces the principles of KMG's (Kaoshiung Municipal Government) dealing with the non-poisonous urban and industrial waste through reclamation of shore land in reinforcing a sense of coastal protection and land development in Tai-Lin-Pu coastal area, southern Taiwan.
Through a series of experimental studies, we found that substitutes of coarse aggregate with a broad spectrum of integrating slag powder, fly ash, and cementitious material can be obtained with a benefit up to 80% saving of cement. the integrated aggregates from the non-poisonous industrial wastes were subsequently made into armour units and used in the field tests at Tai-Lin-Pu coastal area, where the shorelines are seriously eroded. After being subjected to several severe typhoon advents, the results showed that the waste-made units used as the protection breakwater, together with construction wastes and excavated soil as the filling material, prove to be an effective practice in utilizing recycled urban waste to reclaim erosive shore lands. Moreover, this study also demonstrates that through detailed analysis of the waste characteristics, scrap material could be turned into valuable construction aggregates, and highlights the value of non-poisonous urban and industrial waste as a alternative resource for the shore protection engineering. 相似文献
Through a series of experimental studies, we found that substitutes of coarse aggregate with a broad spectrum of integrating slag powder, fly ash, and cementitious material can be obtained with a benefit up to 80% saving of cement. the integrated aggregates from the non-poisonous industrial wastes were subsequently made into armour units and used in the field tests at Tai-Lin-Pu coastal area, where the shorelines are seriously eroded. After being subjected to several severe typhoon advents, the results showed that the waste-made units used as the protection breakwater, together with construction wastes and excavated soil as the filling material, prove to be an effective practice in utilizing recycled urban waste to reclaim erosive shore lands. Moreover, this study also demonstrates that through detailed analysis of the waste characteristics, scrap material could be turned into valuable construction aggregates, and highlights the value of non-poisonous urban and industrial waste as a alternative resource for the shore protection engineering. 相似文献
406.
改性钢渣除磷试验研究 总被引:2,自引:0,他引:2
研究了改性钢渣的吸附除磷效果。试验结果表明,钢渣对废水中的磷的去除率较高,当废水中磷质量浓度为10mg/L,pH值为弱酸或弱碱性条件下,钢渣的用量1g/100mL时,在15min内就可使残留液质量浓度降低到0.1mg/L,远远低于国家排放标准,去除率达到99%以上,对水体富营养化处理具有很重要的意义。 相似文献
407.
用电石渣浆制备烟气脱硫剂 总被引:2,自引:0,他引:2
采用电石渣浆经处理后配制成的电石渣试样作为脱硫剂,对除尘后锅炉烟气进行脱硫实验,在烟气巾s与c质量比约为1:30、吸收体系pH为7~8、温度为15℃的条件下,平均脱硫率达96.35%。采用电石渣浆上层清液作脱硫剂对锅炉烟气进行脱硫的工业试验,在烟气流速为2.8~4.2m/s、脱硫塔内nCa:n5=1.2:1、体系pH为7~8的条件下,平均脱硫率达90.66%,且脱硫塔出气口处SO2质量浓度明显低于GB13271-2001《锅炉大气污染物排放标准》。 相似文献
408.
409.
烧结脱硫灰制备胶凝材料强度影响因素研究 总被引:1,自引:0,他引:1
通过正交及单因素试验方法研究了烧结烟气半干法脱硫灰复掺矿渣、钢渣,辅之外加剂,制备生态胶凝材料的可行性。结果表明采用分别预磨钢渣、矿渣及水泥熟料再与经低温煅烧的改性脱硫灰混磨制备的复合生态胶凝材料,具有良好的安定性、水化性能和力学性能;初凝时间、终凝时间合格。正交试验确定了一定比例和掺量的矿渣和钢渣复掺15%改性脱硫灰、15%水泥熟料和0.5%激发剂时胶凝材料的各项性能较好,通过单因素试验对方案进行了优化,用SEM对两组配方的水泥净浆体进行晶形微观分析,验证了不同水化产物在不同龄期对水泥体的强度影响。 相似文献
410.
高炉矿渣是高炉炼铁过程中产生的主要固体废物,针对我国高炉矿渣的成分和性质特点,分别介绍了其在处理重金属废水、有机废水等领域的研究情况,对于其中可能影响处理效果的原因进行了分析,展望了高炉矿渣在水处理领域应用的广阔前景。 相似文献