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Preparation of boric acid from low-grade ascharite and recovery of magnesium sulfate LI Jie(李 杰)1, FAN Zhan-guo(樊占国)1, LIU Yan-li(刘艳丽)1, LIU Su-lan(刘素兰)1, JIANG Tao(姜 涛)1, XI Zheng...; accepted 19 January 2010 Abstract: Boric acid and kieserite were prepared from low-grade ascharite by sulfuric acid method. This method results in the recovery of 71.06% and 45.03% for boric acid......
Preparation of anodic films on 2024 aluminum alloy in boric acid-containing mixed electrolyte MA Song-jiang(马淞江)1, LUO Peng(罗 鹏)2, ZHOU Hai-hui(周海晖)2, FU Chao-peng(付超鹏)2, KUANG Ya-fei(旷亚非)2 1...; Abstract: The anodizing oxidation process on 2024 aluminum alloy was researched in the mixed electrolyte with the composition of 30 g/L boric acid, 2 g/L......
Trans. Nonferrous Met. Soc. China 22(2012) 1655-1660 Effects of boric acid on microstructure and corrosion resistance of boric/sulfuric acid anodic film on 7050 aluminum alloy DU Nan, WANG Shuai...; accepted 14 October 2011 Abstract: The microstructure and corrosion resistance of different boric/sulfuric acid anodic (BSAA) films on 7050 aluminum alloy were studied by atomic force microscopy (AFM......
; 文献标志码:A Preparation of nitrogen- and phosphorus-containing boric acid ester additive based on molecular dynamics theory and its... extreme pressure and anti-wear additive of nitrogen- and phosphorus-containing boric acid ester (NBPE) was designed and synthesized by molecular dynamics method and characterized by infrared......
发了制备硼酸联产氢氧化镁和硫酸钙工艺.研究结果表明:浸出温度为95 ℃,盐酸用量为理论用量的95%,浸出时间为40 min,浸出液固比为1:1时,B浸出率为94.60%,Mg浸出率达到90.56%.制得的硼酸纯度为99.55%,氢氧化镁的纯度达到80%以上,副产品硫酸钙纯度达到98.81%.关键词:富硼渣;盐酸浸出;硼酸;氢氧化镁;浸出率Preparation of boric acid... were determined by single factor experiments and orthogonal test. The process of preparation of boric acid and magnesium hydroxide cogeneration calcium sulfate was developed for dealing with hydrochloric......
method. Then a small amount of boric acid (H3BO3) was added to the powder, and the NiCuZn ferrite powder compact was prepared with Newton press and CIP methods. Finally, NiCuZn ferrite sintered body... body with 0.5% (mass fraction) boric acid was obtained, which has the bending strength of 340 MPa. The effect of various Mn addition on electromagnetic properties were studied. Key words: ferrite......
Preparation of high purity boric acid and its influencing factors GONG Dian-ting1, LI Feng-hua2, FAN Zhan-guo2, JIANG Tao2 (1. Vocational Technology College, Liaoning Shihua University, Fushun 113001, China; 2. School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China) Abstract:Boric acid with high purity of 99.99% was prepared from borax with modified traditional......
and improve the surface morphology of cathode nickel, the influence of additives of boric acid and dodecyl sodium sulfate (SDS) on the process of nickel electrowinning from sulfate system was studied by cathode polarization tests and nickel electrodeposition experiments. The experimental results show that the addition of boric acid can increase the cathode polarization while SDS can decrease the cathode......
词:富硼渣;硫酸浸出;硼酸;一水硫酸镁;浸出率 中图分类号: TD 985 文献标志码:A Preparation of boric acid and magnesium sulfate monohydrate from boron-rich slag by sulfuric acid leaching method LI Jie1... by single factor and orthogonal experiments. The high temperature crystallization preparation of magnesium sulfate monohydrate and low temperature crystallization preparation boric acid were developed......
. The results show that the precursor precipitate consists of SrCO3 and amorphous Al(OH)3. Only SrA12O4 phase is observed in the calcined sample without boric acid. The crystalline phases SrA12O4 and Sr4Al14O25 coexist in the sample containing 0.3 mol boric acid. With increasing boric acid amount to 0.8 mol, the single-phase Sr4Al14O25 occurs. Compared with the sample without boric acid, the samples......