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本文以银坊金矿树脂提金生产实践为依据,提出了合理的树脂投放密度与分布方案,从而提高了树脂提金吸附率。 相似文献
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本文通过离子交换树脂固定床的实验,探讨了用于树脂矿浆法提金工艺中的树再生药剂和再生条件,获得了令人满意的结果。认为用提金工艺的树脂经适当的方法再生后能够恢复其活性,达到与新树脂相当的载金量。 相似文献
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国内外树脂矿浆法提金专用树脂研究与应用 总被引:2,自引:1,他引:1
本文综述了国内外几种提金专用树脂的特性与应用于黄金生产上的技术比较,指出原苏联的AM-2B型树脂是世界上比较先进的提金树脂,国产的353E型与NK884型树脂均可以应用于树脂矿浆法提金生产上. 相似文献
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本试验通过在氯化钴溶液中,树脂交换中除Cu^2 的静,动态系列试验,选择了一种该体系中,能直接除去Cu^2 ,其吸附容量与净化深度与717树脂相比,相差不大的新树脂-D703,该树脂处理后的溶液,铜含量≤0.0003g/L,能满足1#电解钴的生产要求。 相似文献
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N235萃淋树脂分离富集金的研究 总被引:2,自引:0,他引:2
本文研究表明,N235萃淋树脂是反相萃取色层的新固定相。树脂上吸附的金可以用亚硫酸钠溶液或硫脲溶液解吸,树脂可以再生和重复使用,萃取剂流失少。含金氯化液经树脂分离富集后,金的测定结果与717树脂吸附法所得结果基本一致。 相似文献
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N12胺萃淋树脂吸萃金柱上操作的研究 总被引:1,自引:1,他引:0
本文研究表明,在酸性体系下,树脂对金具有吸萃选择性,树脂上吸萃的金可以用2%硫脲+1mol/L盐酸或1%亚硫酸钠溶液解脱,树脂可以再生和重复使用,且萃取剂流失并不严重。含金氯化液经树脂分离富集后,金的测定结果与717树脂吸附法基本一致。 相似文献
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N亚水杨基壳聚糖Schiff碱树脂的合成及其吸附性能的研究 总被引:3,自引:0,他引:3
利用壳聚糖C2位上的活泼氨基与水杨醛进行缩合反应,合成了N-亚水杨基壳聚糖Schiff碱树脂。测定了该树脂对过渡金属离子的吸附性能,结果表明,该树脂对Cu^2+的吸附量较高,为32.7mg/g;吸附速度快,在2h内吸附率可达85%,并具有一定的选择性。 相似文献
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选取电煅煤和沥青焦为骨料,研究工艺参数和原料特性对酚醛树脂与炭素骨料静态浸润性能的影响,并通过FT-IR、XPS分析炭素骨料与酚醛树脂的表面官能团和元素赋存形态。结果表明,酚醛树脂对电煅煤/沥青焦的静态浸润性随着骨料粒度、加热温度、加热时间的增加而逐渐增大,随着振动次数的增加呈现先增加后减小的变化趋势。酚醛树脂对电煅煤/无烟煤的浸润性能受到原料化学组成、晶体结构及流变性能的共同影响,酚醛树脂在炭素骨料表面的铺展和扩散取决于表面官能团的相互作用(氢键、静电键及酸碱中和反应)。 相似文献
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牙科光固化复合树脂材料的性能与展望 总被引:3,自引:0,他引:3
牙科光固化复合树脂具有色泽美观,强度高,临床操作方便,粘结固位效果好等优点,在牙科修复领域引起了广泛关注.该复合材料是由树脂基体、无机填料和光引发体系组成的,原料混合后经特定波长的可见光照射即可固化.牙科光固化复合树脂虽然已在临床上得到了应用,但在性能方面仍然存在某些不足之处,所以如何进一步提高其性能成为目前研究的热点之一.该文作者综述了树脂基体、无机填料和光引发剂的研究情况,对光固化复合树脂的力学性能、聚合度、吸水性和溶解性等性能及其影响因素进行了评述,并对今后的研究进行了展望. 相似文献
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C411树脂在盐酸或王水酸性介质中能很好地吸附金,金矿中常见元素不影响金的吸附。吸附后的金用硫脲溶液洗脱较完全和容易。本文研究了C411树脂在酸性介质中吸附和解吸金的性能,并与410哌啶树脂进行了比较。 相似文献
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采用热压法制备了酚醛树脂质量分数为4%~12%的5种树脂基合成汽车刹车片,并用Link3000型惯量试验台、Link3900型NVH惯量试验台以及Link3336压缩试验机分别测试了刹车片的摩擦性能、噪音性能、压缩性能,并结合刹车片试样的力学性能和显微组织分析,探讨了酚醛树脂含量对刹车片摩擦磨损性能的影响。结果表明:随酚醛树脂含量增加,刹车片的平均摩擦因数和高温摩擦因数降低,引起衰退,同时制动噪音增加,噪音发生概率逐渐上升,且噪音强度随之增加;当酚醛树脂质量分数为6%时,摩擦因数稳定性最好,不易引起衰退;当酚醛树脂质量分数为4%~6%时噪音发生概率最低。 相似文献
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Kathryn C. Sole Peihao Qi J. Brent Hiskey 《Metallurgical and Materials Transactions B》1993,24(1):17-25
The long-term operating characteristics of ion-exchange resins suitable for the hydrometallurgical recovery of precious metals
remain largely unknown. This study examines some physicochemical properties of two promising ion-exchange resins for gold,
SR-3 and PAZ-8, when subjected to experimental conditions similar to those of a typical alkaline-chlorination gold recovery
process. It is shown that the degradation behavior may be related to both the micro- and macrostructural properties of the
resins. Severe resin degradation occurs on pro-longed, agitated contact of the SR-3 resin beads with hypochlorite solutions
at ambient tem-perature; the low cross linkage of the resin facilitates mechanical damage, while chemical degradation occurs
by dehydration, oxidative scission of the functional groups, and breakdown of the polymer matrix. The PAZ-8 resin is highly
cross linked and is more resistant to both mechanical and chemical attack under similar conditions. 相似文献
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AG Zuccari Y Oshida M Miyazaki K Fukuishi H Onose BK Moore 《Canadian Metallurgical Quarterly》1997,7(5):345-355
In Part I, it was found that (i) 2 vol.% admixture of reinforcing elements in PMMA (Jet) resin matrix had a significant beneficial effects on the mechanical properties, and (ii) among these, zirconia exhibited the greatest improvements in modulus of elasticity, transverse strength, toughness, and hardness number. Using the best combination (i.e., PMMA resin matrix and 2 vol.% ZrO2), exothermic temperature raise and polymerization shrinkage were further investigated. Deterioration in mechanical properties due to prolonged water sorption were also studied for 5 weeks. The following can be concluded: (1) By increasing liquid/powder ratio for PMMA control samples, the peak temperature occurrence was retarded by 3 min and raised by 8 degrees C. (2) The effect of admixed oxide particles to PMMA resin matrix or the heat generated during polymerization was not significant. (3) The polymerization volumetric shrinkage was influenced by the a mixture of particles, with increases as large as 0.9% (or 0.3% in linear shrinkage). (4) PMMA resin admixed with 2 vol.% of zirconia particles showed a continuous weight gain due to water sorption, mechanical properties appears to be increasing up to 1-week sorption, followed by rapid drop of all properties. (5) Autopolymerizing acrylic resins are a resin-resin composite material of pre-polymerized beads embedded in a newly formed acrylic matrix. The main fracture modality appears to occur through the matrix and at the interface, although some trans-beads fractures were identified. (6) It was suggested that incorporating certain type of oxide particles into the pre-polymerized beads would provide stronger resin matrix. 相似文献