Results 61 to 70 of about 523,868 (94)
, 2016 氰化尾渣是我国的大宗危险固体废物。这种固体废物含有可回收的有价元素,如铜、铅、锌、金、银、硫、铁等。对氰化尾渣的综合利用既可以回收这些有价元素,实现矿石资源的最大化利用,又可以减少氰化尾渣中残存的药剂对环境的危害。本文从氰化尾渣的性质出发,总结了氰化尾渣的预处理方法,介绍了回收铜铅锌、硫铁、金银的研究现状,并指出现阶段存在的主要问题。针对研究现状和存在的问题,提出新工艺的开发、新药剂的研制、尾矿的再利用等发展方向。氰化尾渣的顺利解决将为社会带来一定经济效益和环境效益。
付国燕 +6 more
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[Design of functional array electrode stimulation system with surface electromyography feedback]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za Zhi, 2020 Yin Q, Li X, Liu Q.
europepmc +1 more source
, 2017 随着新能源电动汽车市场的快速发展,未来动力锂电池报废量将大幅增加。基于废旧动力锂电池的环境危害性与经济价值性,需要研发环保、安全、可靠、高效的自动化拆解回收设备。本文结合动力电池拆解回收工艺流程,简化部分工序内容着重于自动化拆解工艺设计动力电池自动拆解试验设备,并完成了拆解试验。本文拆解试验结果表明,利用砂轮片切割动力电池具有可行性;切割工位是产生粉尘废气的主要工位,切割过程需重点防护粉尘废气泄露,并对粉尘废气进行环保处理;采用夹爪取芯方式对于鼓胀电池进行电芯外壳分离的可靠性不高 ...
沙亚红 +4 more
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[Association between mixed metal element exposure and the risk of thyroid carcinoma: a case-control study]. [PDF]
Zhejiang Da Xue Xue Bao Yi Xue BanZhan Z +6 more
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[Determination of trace anions in battery-grade lithium carbonate by double-inhibition on-line matrix-removal ion chromatography]. [PDF]
Se PuWu G, Wu GQ.
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Impairment of endometrial decidual reaction in early pregnant mice fed with high fat diet. [PDF]
Zhejiang Da Xue Xue Bao Yi Xue Ban, 2022 Chen Z +8 more
europepmc +1 more source
[Construction of an Early-stage Risk Prediction Model for Trauma-Induced Coagulopathy]. [PDF]
Sichuan Da Xue Xue Bao Yi Xue BanXu X +7 more
europepmc +1 more source
[Design and preliminary application of outdoor flying pigeon-robot]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za Zhi, 2022 Wang H, Wang S, Qiu Z, Zhang Q, Xu S.
europepmc +1 more source
[Removal of a high-translucency zirconia crown with Er:YAG laser: a case report]. [PDF]
Hua Xi Kou Qiang Yi Xue Za ZhiHuo J, Zhang X, Jing W, Zhao J, Dong H.
europepmc +1 more source
, 2016 采用商品纳滤膜NF90浓缩回收高含磷废水,考察了预处理、pH、跨膜压力和浓缩倍数对纳滤浓缩回收含磷废水效果的影响。结果表明,利用氢氧化钠调节废水至pH=5时,固体去除率为64.2%,电导率降低60.3%。纳滤膜除磷技术的优化工艺条件为:料液pH=5,操作压力3 MPa,此条件下纳滤膜可长时间保持较高的通量。料液浓缩5倍时,TP的截留率为91.7%,脱盐率为90.7%。
王强 +5 more
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