共搜索到1039条信息，每页显示10条信息，共104页。用时：0小时0分0秒456毫秒
feldspar from silicic tephra [J]. Quaternary Geochronology, 2011, 6(2): 285-288. [14] JENA S K, DHAWAN N, RAO D S, MISRA P K, MISHRA B K, DAS B. Studies on extraction of potassium values from nepheline... glass-ceramics from potassium feldspar tailings [J]. Journal of the Chinese Ceramic Society, 2003, 31(2): 121-140. [18] KAUSIK D, SUKHEN D, SWAPAN K D. Effect of substitution of fly ash for quartz......
by metallographic microscope, scanning electronic microscope and X-ray diffraction. The results illustrated in Figure 1 and Table 3 indicate that the dominant minerals of the ore are potassium feldspar..., %) For the potassium feldspar, iron mineral is the main harmful element that affects the feldspar product quality. It was observed from the metallographicmicroscope and scanning electron microscopy......
of white mud and potassium feldspar and its environmental assessment were investigated. Under the optimal conditions of a blending mass ratio of 70?30 for white mud to potassium feldspar, a calcination... concentrations of harmful gases from a mixture of white mud and potassium feldspar during calcination process could qualify the National Standards without causing secondary environmental pollution. Key......
from potash feldspar. In the first step, potash feldspar was roasted with Na2CO3 and was followed by leaching using Na OH solution to increase the levels of potassium, sodium, and aluminum in the solid...Preparation of ultrafine silica from potash feldspar using sodium carbonate roasting technologyJia-nan Liu1,Xiao-yi Shen1,Yan Wu1,Jun Zhang1,Yu-chun Zhai1,21. School of Metallurgy, Northeastern......
......
, and caesium. Non-water-soluble potassium minerals are primarily composed of potassium-containing aluminosilicates, such as potassium feldspar, alunite, and glauconite [2]. Water-soluble potassium... effective for the decomposition of potassium feldspar [5-8]. However, the separation of sodium and potassium from an alkaline leaching solution is challenging owing to similarities between......
......
A novel method to produce potassium chromate from carbon ferrochromeHU Guo-rong(胡国荣), WANG Jia-liang(王家良), PENG Zhong-dong(彭忠东), DU Ke(杜柯) (School of Metallurgy and Environment, Central South University, Changsha 410083, China)Abstract:The oxidizing roasting of carbon ferrochrome in the presence of potassium carbonate and air was investigated. The effects of reaction temperature, reaction time......
Investigation of High Molar Ratio Potassium Solution Used in Zinc-Rich Coatings LI Sheng1,YAN Rui1,WU Hang1 (1.Surface Engineering Research Institute, Beijing 100072, China) 摘要:High molar ratio potassium silicate solution used in zinc-rich water-base coatings was prepared by adding the nanosize SiO2 to the low molar ratio potassium silicate solution, and its microstructure was investigated......
Sintering behaviour of feldspar and influence of electric charge effectsW.Gallala,M.E.Gaied摘 要:The characterization of feldspar for electric porcelain... level. Feldspar sand was treated by flotation. The floated feldspar is constituted by microcline, quartz, and minor amounts of albite. The micro-structure of sintered feldspar at 1230°C is essentially......
