The kaolin wasbleached by reduction bleaching way, oxidation bleaching way and oxidation-reduction symphysis bleachingway.
以唐山新区恒泰干粉造纸瓷土厂的高岭土为研究对象,在确定染色杂质的种类和赋存状态的基础上,采用还原漂白法、氧化漂白法、氧化—还原联合漂白法三种方法对其进行增白实验,并研究了影响漂白效果的诸因素:试样矿物组成、药剂用量、pH值、矿浆浓度、反应温度、反应时间、加药制度。
Effects of reducing agents on NO reduction over Ag/Al_2O_3 catalyst;
还原剂对Ag/Al_2O_3催化剂上NO还原的影响
The results showed that NO reduction and NO oxidation.
结果表明:NO还原和氧化在其脱除过程中同时共存,当NO,N2,O2,H2O和CO2的体积浓度分别为200×10-6,80%,5%,6%和9%时,NO氧化所占的比例比NO还原的大很多;脉冲频率增大导致NO还原率和氧化率均增大;H2O浓度增大导致HNO3浓度增大,表明NO氧化所占的比例随H2O浓度增大而增大。
Combustion experiments on Shenmu bituminous coal and Geliping blind coal were carried out in a high-temperature horizontal twin-tube quartz stove,and NO volume fraction was measured in real-time during the combustion to investigate the effect of magnesium acetate on NO reduction.
实验结果表明,醋酸镁对燃料型NO生成的还原作用受到煤种、燃烧温度和燃烧气氛的影响,NO还原率可达23%。
The Treatment of Wastewater Containing Cr~(6+) Through Electroanalysis-deoxidization;
电解还原法处理含铬废水
Study on technique of separation of Mn-Ag oxidation ore with amylum by degradation deoxidization;
淀粉降解还原分离锰银氧化矿工艺研究
Several programs are contrasted by experiments and the process that neutralization-deoxidization-P204 extraction-stripping with sulfuric acid-oxidization-V2O5 deposition is proved the best route.
主要论述对豫西某地石煤钒矿硫酸浸液的后序处理试验研究,针对该料液的特点进行多种研究方案对比,最终确立浸出液中和—还原—H(C8H17)2PO4(以下简写为P204)萃取—硫酸反萃取—氧化沉钒技术路线,采用15%P204+10%TBP+75%煤油为萃取体系,1。
Study on reducing silver through solid phase reaction();
固相反应还原银的研究(Ⅱ)
Electric arc furnace(EAF) dust with carbon-containing pellets direct reducing technology was studied and expanding experiment in laboratory was achieved.
分析研究了运用配碳球团的直接还原技术处理的电炉粉尘,并完成了实验室扩大性实验;得到了还原焙烧法的合理工艺条件,即碳过量系数为1。
Investigated the electric arc furnace(EAF) dust with carbon-containing pellets direct reducing technology,carried out the expanding experiment in laboratory,and got the better parameters of roasting reduction method: excess coefficient of carbon is 1.
为综合利用含锌电炉粉尘,提出运用含碳球团的还原处理方法,并进行了扩大性试验,得到了还原焙烧法的合理工艺条件。
Comparison of kinetics of acid violet red B reduced by Pd/Fe and normal Fe~0;
Pd/Fe与Fe~0催化还原降解酸性紫红B的动力学比较
390g o-nitrophenol was reduced by 1.
采用在Pd/C催化下水合肼还原邻硝基苯酚的方法制备邻氨基苯酚,研究了反应温度、催化剂用量和还原剂用量对反应产物收率的影响。
Coke powder is used to reduce high aluminum pulverized coal by adopted carbon tube resistance furnace between the temperature of 1 950℃ and 2 200 ℃ It shows that if reduction temperature is higher than 2 050t, AkOs in high aluminum powder ash can be reduced obviously.
使用碳管电阻炉在1 950-2 200℃温度范围内,用焦炭粉还原高铝粉煤灰,制取Fe-Al-Si合金。