偷拍 凸隐 视频 播放_仙踪林国精产品视频_亚洲日韩精品av无码麻豆_最原始进入静静的大肠_宝贝屁股翘起来浪一点_办公室强肝的播出方式与评价_欧美人禽zozσ伦交_长篇乱肉合集乱500小说_ysl口红水蜜桃色号60601

Fine Yellow Tungsten Oxide

Fine yellow tungsten oxide or fine tungsten trioxide is prepared by using double salt method. The finer the granular of yellow tungsten oxide is, the smaller the corresponding apparent density is. Fine WO3 is also produced by the reaction between artificial scheelite and hydrochloric acid (HCL).

By using double salt method to produce fine tungsten trioxide, white amorphous gel tungstic acid will be formed first if the double salt and HCL react under cold conditions. And the greater the actual bulk of gel tungstic acid with lower concentration is, the finer the particle size of prepared tungsten trioxide is. But, this is not unlimited.fine yellow tungsten oxide Chinatungsten picture
Relevant process practice data show that in the case of constant acidity of reaction system, the minimum apparent density of prepared tungsten trioxide can reach 0.23~0.25g/cm3 if concentration of double salt slurry is intentionally reduced and volume of white gel tungstic acid is effectively increased. If relevant operating conditions are controlled more optimally and effectively, the apparent density of fine tungsten trioxide finally obtained in the process can be further reduced.

More details, please visit:
http://www.yellow-tungsten-oxide.com/index.html

Comments are closed.

Address: 3F, No.25-1 WH Rd., Xiamen Software Park Ⅱ, FJ 361008,China Copyright ? 1997 - 2025 CTIA All Rights Reserved
Phone:+86-592-5129696,+86-592-5129595;    Email: [email protected]
舊版