共搜索到12382条信息,每页显示10条信息,共1239页。用时:0小时0分0秒593毫秒
4.3.3.1 爆破器材(Blasting Accessories) A Blasting Caps 1> The electric blasting cap is the most commonly used device[1] for initiating high explosives.It may be inserted directly into the explosive cartridge or cast primer,or be used with detonating cord.The advantages of elect......
-polymetallic ore deposit in Dachang ore field,Guangxi, China [J]. The Chinese Journal of Nonferrous Metals, 2012, 22(3): 751-760. (in Chinese) [6]LU Huan-zhang, FAN Hong-rui, NI Pei, OU Guang-xi, SHEN Kun.... (in Chinese) [35]ZHAO Kui-dong, JIANG Shao-yong, XIAO Hong-quan, NI Pei. Origin of ore-forming fluids of the Dachang Sn-polymetallic ore deposit: Evidence from helium isotopes [J]. Chinese Science......
金属性能的影响与其对HAZ的相似,Kirkwood 在这方面做了非常好的阐述[16].从钢材设计的角度,如图11所示,母材中的Nb含量在大热输入量埋弧焊时将会显著影响熔敷金属性能.与Mn,Ni和Mo相同,往钢中加Nb是提高熔敷金属抗拉强度的一个好方法,但是因为会有一定的预期风险,需要谨慎地控制其加入量. 焊接韧性恶化的另一个机制是铁素体相中微合金元素碳氮化物析出相.特别是在焊接接头热应力释放时...善韧性的作用. 图16 SEM观察显示TMCP HT950钢的束状马氏体的细化[28] 图16是TMCP HT950钢(抗拉强度下限为950MPa)SEM的观察结果[28]. 通过利用奥氏体调节对贝氏体或马氏体的作用,开发了奥氏体变形钢[28].这个工艺的目的是改善经济型无Ni钢的力学性能,这种成分钢仅在基于Nb的设计成分方能获得.提高未再结晶区奥氏体形变能够同时提高奥氏体变形......
业成都公司和四川省有色金属工业公司.先后任副经理, 党组副书记, 经理兼党组书记至1998年退休. 在川担任领导职务期间, 曾兼任四川省有色金属学会第一, 二届理事长, 省科协第二, 三届委员; 省政府科技顾问团第一, 二届顾问.1993年被选为中国人民政治协商四川省委员第七届常务委员. 在几十年经历中, 根据工作需要和体会, 曾撰写<隔膜电解法生产零号镍>, <发展四川有色金属工业的辩证思考...钯和金银, 1968年首次从我国资源中提取出了铑, 铱, 锇和钌, 填补了我国的空白.1969-1970年开发出了505产品(电解镍粉), 并设计建成了年产10 t的工业试验厂和年产量100 t的生产厂, 解决了当时军工的急需. 1973年起组织和参与贵金属提取新工艺的研究, 1979年该成果被用于建设新车间并于1980年9月投产, 使贵金属的回收率大幅度提高.1984年起主持并参与镍闪速熔炼的......
×108 mL-1. At this point, 112.5 g of milled (<1 mm) limonite ore (which contained 7% (by wt) Fe, 0.4% Ni, 0.27% Cr, 0.13% Mn and 0.04% Co, with quartz (76%) and goethite (10%) as the major mineral... mg Co). The major deportment of both of these metals in the ore was the oxyhydroxide mineral asbolane (Ni,Co)xMn(O,OH)4·nH2O). The oxidation state of manganese in asbolane is+4 and, since Mn(IV......
emission spectrometry (ICP-AES, Analytical Instru-ments, Thermo, A6300, USA) rapid screening at the following wavelengths (nm): Cu (324.7), Cr (284.3), Ni (221.6), Pb (216.9), Zn (206.2). For the sample... fraction are (%) 12.5, 10.3, 9.9, 6.8, 25.2, 35.4, respectively; the concentrations of Cu, Cr, Ni, Pb and Zn in sample of 0.5-1.0 mm of sieve fraction are 585.00, 0.368, 1.50, 9.24, 1.25 g/kg......
], the removal rate of heavy metal ions can reach 99%, when biological treatment method was used to treat lead ore wastewater, where heavy metal ions mainly covering Pb, Zn, Cu, Fe, Mn, Ni and Cd, etc... to treat heavy metal wastewater. The test results showed that the bacteria can remove heavy metal ions such as Cd, Cr, Cu, Ni, Pb, the removal rate can reach up to 99%. Based on the literatures......
content of sulphate and soluble metals, such as Fe, Zn, Cu, Ni, Pb and Cd. Biological treatment of such wastewater, based on Sulphate-Reducing Bacteria (SRB) [1, 2], is a viable option due to lower... by inductively coupled plasma spectrometry ICP (Leeman Labs, Direct Reading Echelle, detection limit for Fe,Zn,Cu,Ni < 0.2 mg/L). The concentrations of ethanol and acetate were determined by gas......
, cultivation time-10 days, t 37℃) The strains of A.ferrooxidans and S.thermosulfidooxidans are able to bioleach Cu, Zn, Pb, Ni, Co and other non-ferrous metals from corresponding sulfide minerals... by iron-oxidizing bacteria, while the sulfur-oxidizing bacteria cause an intensive bioleaching. 3 Conclusion The studies have shown that WWS are reach with heavy metals (Fe, Zn, Cu, Pl, Cd, Ni......
. [17] Kang S-H,Amine K.Layered Li(Li 0.2 Ni 0.15 + 0.5 z Co 0.10 Mn 0.55-0.5z)O2-zFz cathode materials for Li-ion secondary batteries[J]. Journal of Power Sources, 2005, 146(1): 654-657. [18] Tamura...): 41-46. [122] Kono A, Shimizu K, Nakano H, et al. Positive-temperature-coefficient effect of electrical resistivity below melting point of poly (vinylidene fluoride)(PVDF) in Ni particle-dispersed PVDF......