钙还原

二元铁酸钙还原行为的研究

Research of reduction behavior of binary calcium ferrite

首先采用钙热还原法制备稀土粗金属（Dy、Y）。

Firstly , crude rare-earth metals ( Dysprosium , Yttrium ) are prepared by reduction reaction with Calcium reducing agent .

采用Fe-Ni复合催化剂，在温度650℃条件下即可将烟气脱硫石膏催化还原为硫化钙，还原率达95%以上。

The catalytic reduction of flue gas desulfurization ( FGD ) gypsum to calcium sulfide over Ni Fe composite catalyst was investigated . An optimum conversion rate of more than 95 % was obtained at 650 ℃ .

真空钙热还原炉渣的综合利用研究

Study on Comprehensive Utilization of Slag from Vacuum Calcium Thermal Reduction

研究了从真空钙热还原炉渣中回收稀土的工艺条件；

The technology of recovering RE from slag of vacuum calcium thermal reduction is studied .

钒酸钙的还原及直接合金化

Direct alloying with calcium vanadate

结果表明，以液态钙为还原剂的还原工艺是可行的。

The analytic results have shown that the new magnesium reduction process deoxidizing by liquid calcium is feasible .

钙热还原及熔盐萃取联合法一次性制备低氧低氟金属镝

One Time to Produce Low Oxygen and Low Fluorine Dysprosium Metal by the Combining Method of Calcium Reducing Agent and Fused-Salt Extraction

副产品氟化钙用作炼硅铁合金的助熔剂，使钙热还原炉渣得到综合利用。

The resultant by-product calcium fluoride can be used as additional agent in Si-Fe alloy metallurgy that makes slag recycled more completely .

介绍了用氟化钪钙热还原得到的粗金属钪为原料，通过真空蒸馏净化制取纯金属钪的工艺过程及其技术参数。

The technics of purifying Sc metal in vacuum distilling with coarse Sc metal which is made by ScF3deoxidized by Ca at heated condition .

碳含量降低，锰活度将增加，不利于氧化脱磷和保锰。碳含量高将抑制钙的还原脱磷作用。

The manganese activity increases with decreasing carbon content of the liquid , and has a defective action on the oxidative dephosphorization and the manganese conservation , but an effective action on the reductive dephosphorization by calcium .

甲烷和固态硫酸钙的热化学还原反应模拟实验初步研究

Simulation experiments on thermochemical sulfate reduction of methane with solid calcium sulfate

木钙中所含还原糖单糖组分主要是葡萄糖、甘露糖、木糖、阿拉伯糖和半乳糖。

The main monosaccharide components of reducing sugar in CL are glucose , mannose , xylose , arabinose and galactose .

结果表明，甲烷和固态硫酸钙能够发生热化学还原反应，生成硫化氢、碳酸钙和水。

According to the results , hydrogen sulfide , calcium carbonate and water are the main products during the reaction .

抗氧化研究结果表明，在一定的体积范围内，氨基酸螯合钙浓缩液的还原力随着其体积的增大而增大。

The antioxidant evaluation indicated that the condensed amino acid chelated calcium solution obtained had reducing power in a positive volume-dependent fashion in a proper range .