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) Cement grout (adding sodium silicate accounting for 5% cement weight) was adopted as the advanced small pipe grout material. And the parameters were as follows: The water cement ratio was 1:1; the concentration of sodium silicate was 35 Baume degree and its modulus was 2.4; the grouting pressure ranged from 0.5–1.0 MPa. 5) After grouting, the up and down bench excavation method was adopted. Before......
. [3] 张国范, 张佰发, 石晴. 油酸钠在闪锌矿表面的吸附机理[J]. 中南大学学报(自然科学版), 2017, 48(1): 16-24. ZHANG Guofan, ZHANG Baifa, SHI Qing. Adsorption mechanism of sphalerite by sodium oleate[J]. Journal of Central South University... behavior and mechanism of cervantite with sodium dodecyl sulfate[J]. Journal of Central South University (Science and Technology), 2013, 44(10): 3955-3962. [12] TORRES A, AMAYA S J, RODRIGUEZ R E, et......
on copper surface in sodium chloride solution[J]. Journal of Sol-Gel Science and Technology, 2016, 80(2): 567- 578. [24] MO Shi, LUO Hong-qun, LI Nian-bing. Study on the influences of two thiazole flavor... surface in sodium chloride solution[J]. Journal of Sol-Gel Science and Technology, 2016, 80(2): 567-578. [28] YU Yin-zhe, WANG Yi-zhen, LI Jin, ZHANG Da-quan, GAO Li-xin. In situ click-assembling......
Patent: 4666688, 1987-05-19. [8] IWAI M, TOGURI J M. The leaching of celestite in sodium carbonate solution [J]. Hydrometallurgy, 1989, 22: 87-100. [9] CASTILLEJOS A H, de la CRUZ DEL B, URIBE S. The direct conversion of celestite to strontium carbonate in sodium carbonate aqueous media [J]. Hydrometallurgy, 1996, 40: 207-222. [10] ZORAGA M, KAHRUMAN C. Kinetics of conversion of celestite......
Materials All reagents were of analytical grade (Sinopharm Chemical Reagent Co., Ltd., Shanghai, China). Especially, the Se(VI) stock solution was prepared from the sodium selenate (Na2SeO4...): 3337-3345. [32] MA Jiayu, LI Zhi-bao, ZHANG Yi, DEMOPOULOS G P. Desilication of sodium aluminate solution by Friedel's salt (FS: 3CaO·A12O3·CaCl2·10H2O) [J]. Hydrometallurgy, 2009, 99(3-4): 225-230. [33......
of the easiest methods [7,12,21]. Moreover, simultaneous use of sodium citrate and glycolic acid as complexing materials is an effective method for modifying the complexes of chromium [10,13,18]. Due to the low...) without agitation and was converted to pulse current by a digital transformer. The pH value of baths was maintained at 1.2-1.6 and controlled by using hydrochloric acid (HCl) and sodium hydroxide (NaOH......
]. Ceramics Silikaty, 2005, 49(2): 115-119. [6] SHEN Zhuo-xian, GUAN Bao-hong, FU Hai-lu, YANG Liu-chun. Effect of potassium sodium tartrate and sodium citrate on the preparation of α-calcium sulfate......
electrode in aerated neutral sodium nitrate solutions [J]. Electrochim Acta, 2005, 55: 1265-1274. [21] EL-SAYED A, MOHRAN H S, ABD EL-LATEEF H M. Effect of minor nickel alloying with zinc... H M, SHAKER S M A, KHALAF M M. Synthesis of polar unique 3d metal-imine complexes of salicylidene anthranilate sodium salt. Homogeneous catalytic and corrosion inhibition performance [J]. J Taiwan......
ground with 1000, 1200 and 1500 grit sandpapers. Then, these samples were polished with 1 μm and 0.25 μm diamond solution. The prepared samples were etched with sodium hydroxide solution (10 g sodium......
Collection and Management Center (Wuhan, China). Glucose, ethanol, magnesium sulfate heptahydrate (MgSO4·7H2O), dipotassium hydrogen phosphate (K2HPO4), ferrous sulfate (FeSO4), sodium borohydride (NaBH4... and stirred uniformly. Sodium borohydride was added dropwise to the mixture by means of a syringe pump, and in the process, the mixer was continuously agitated so that the iron could be uniformly......