共搜索到5093条信息，每页显示10条信息，共510页。用时：0小时0分0秒588毫秒
Recovery of rare-earth metal neodymium from aqueous solutions by poly-γ-glutamic acid and its sodium salt as biosorbents:Effects of solution pH on neodymium recovery mechanismsMisaki Hisada,Yoshinori... of solution pH on recovery of rare-earth metal Nd are systematically examined to clarify mechanisms of Nd recovery by y-PGA and its sodium salt(y-PGANa). The recovery efficiency of Nd by y-PGA......
with iron ore-coal composite pellets was adopted to deal with high silicon content-low iron grade ore, and sodium salt was used to enhance the reduction process. Effects of temperature, reduction time and mass fraction of sodium salt on reduction behavior were researched. Gas analysis was used to investigate effect of sodium salt on the reduction process. Effects of CO volume fraction......
, soluble ions, total salt, pH, electrical conductivity (EC) and exchangeable sodium percentage (ESP) were selected to evaluate alkalization and salinization of bauxite residue. High levels of ions, cation exchange capacity (TOC), total salt, exchangeable sodium percentage (ESP) and cation exchange capacity (CEC) in bauxite residue were detected with greater coefficient of variation (CV), which......
Desiliconisation of alkaline leaching solution of roasted stone coal with carbonation method LONG Si-si(龙思思), ZHANG Guo-fan(张国范), FENG Qi-ming(冯其明), OU Le-ming(欧乐明), LU Yi-ping(卢毅屏... the technology of leaching vanadium from roasted stone coal with NaOH solution includes oxidation roasting, alkaline leaching, purification, enrichment of vanadium and preparation[1]. In the process......
the shear strength of the sodium chloride contaminated soil and salt content was also analyzed [27]. Thus, the study of the salt deterioration of earthen materials is suitable based on these both kinds of salts. In this work, sodium sulphate, sodium chloride and their mixture are employed to study the salt deterioration of contaminated earthen material under wet-dry cycles at a certain temperature......
·SiO2, respectively. Key words: chromite ore; oxidative roasting; thermodynamics; sodium chromate 1 Introduction Soda-ash roasting of the chromite mineral is almost the unique method used worldwide for the production of water soluble sodium chromate [1]. The soda-ash roasting process is divided into lime-based roasting process and lime-free roasting process according to the composition of filler......
of the surface of serpentine and the other is the adsorption of sodium hexametaphosphate on the surface of serpentine. Sodium hexametaphosphate (NaPO3)6 is a kind of long-chain inorganic salt, a spiral... Effect of sodium hexametaphosphate on separation of serpentine from pyrite LU Yi-ping1, ZHANG Ming-qiang2, FENG Qi-ming1, LONG Tao1, OU Le-ming1, ZHANG Guo-fan1 1. School of Mineral Processing......
Recovery of high specific area silica and sodium fluoride from sodium hexafluorosilicateXU Hui(徐徽), LI Gui(李贵), CHENG Jun-feng(程俊峰), LIU Wei-ping(刘卫平) (School of Metallurgy and Environment, Central South University, Changsha 410083, China)Abstract:Sodium fluoride and high specific area silica were synthesized by using sodium hexafluorosilicate (Na2SiF6) and sodium carbonate decahydrate (Na2CO3......
J. Cent. South Univ. (2017) 24: 937-946 DOI: 10.1007/s11771-017-3496-7 Effect of Friedel’s salt on strength enhancement of stabilized chloride saline soil CHENG Yin(程寅)1, LI Zhan-guo(李战国)1, HUANG... hydrate, also known as Friedel’s salt, appeared in the PC+CH-stabilized chloride saline soils. The solid-phase volume of Friedel’s salt expanded during the formation of the hydrate; this volume filled......
