Experimental Study of Leaching Yellow Phosphorus Slag by Phosphoric Acid

2010 ◽  
Vol 36 (1) ◽  
pp. 39-43 ◽  
Author(s):  
Yi Su ◽  
Guobing Li ◽  
Jupei Xia
Keyword(s):  
Experimental Study ◽  
Phosphoric Acid ◽  
Yellow Phosphorus

Experimental Study of Purifying Precipitated Silica Produced from Yellow Phosphorus Slag

2012 ◽  
Vol 455-456 ◽  
pp. 503-506 ◽  
Author(s):  
Guo Bing Li ◽  
Hai Lin ◽  
Yan Li Ma ◽  
Yi Su
Keyword(s):  
Experimental Study ◽  
Nitric Acid ◽  
Reaction Time ◽  
Nitric Acid Concentration ◽  
Acid Leaching ◽  
Quality Requirements ◽  
Solid Ratio ◽  
Precipitated Silica ◽  
Yellow Phosphorus ◽  
Fe Content

When precipitated silica was prepared from yellow phosphorus slag by the phosphoric acid leaching, the Fe content can not meet the quality requirements of the product. This article indicates the method of purifying precipitated silica with nitric acid solution, which may decrease the Fe content to about 0.02%. The purification optimum technical conditions are: the nitric acid concentration 8%, reaction time 2.0 hours, reaction temperature 343.15K, fluid solid ratio 4:1, stirring speed 300 rpm.

scholarly journals Experimental Study of Reforming Catalyst on Phosphoric Acid Fuel Cell Plant

1999 ◽  
Vol 119 (8-9) ◽  
pp. 982-987
Author(s):  
Kazutaka Hotta ◽  
Masaru Ogawa ◽  
Hideaki Miyoshi ◽  
Kiyoshi Tsuru
Keyword(s):  
Experimental Study ◽  
Fuel Cell ◽  
Phosphoric Acid ◽  
Phosphoric Acid Fuel Cell ◽  
Reforming Catalyst

Preparation and Research Advance of Electronic Grade Phosphoric Acid

2014 ◽  
Vol 881-883 ◽  
pp. 70-73
Author(s):  
Bin Wang ◽  
Kang Bi Luo
Keyword(s):  
Phosphoric Acid ◽  
High Purity ◽  
Industrial Production ◽  
Direct Method ◽  
Purification Method ◽  
Oxidation Method ◽  
Advantages And Disadvantages ◽  
Yellow Phosphorus ◽  
Research Advance

The application of high purity phosphoric acid in industrial production is more and more widely used, especially electronic grade phosphoric acid, and the demand of it has risen year by year. This paper introduces the preparation and research advance of electronic grade phosphoric acid, expounds the principle, advantages and disadvantages and research advance of preparing high purity phosphoric acid by high purity phosphorus oxidation method and phosphoric acid purification method. Using hot process by direct method to prepare high purity electronic grade phosphoric acid is still the mainstream on the current, and the key of technique is the purification of yellow phosphorus and phosphoric acid.

Experimental Study on Intensified Leaching of Vanadium Ore

2012 ◽  
Vol 724 ◽  
pp. 355-358
Author(s):  
Jun Zhu ◽  
Ji Ke Guo ◽  
Jing Jing Xue ◽  
Xin Li
Keyword(s):  
Experimental Study ◽  
Sulfuric Acid ◽  
Phosphoric Acid ◽  
Acid Concentration ◽  
Sulfuric Acid Concentration ◽  
Leaching Rate ◽  
Mass Ratio ◽  
Solid Mass ◽  
Vanadium Extraction

The wet technology for vanadium extraction from the complex refractory vanadium ores was studied as a preferred approach with phosphoric acid as helper leaching agent. The results showed that the addition of phosphoric acid could improve the vanadium leaching rate significantly. Combination with sulfuric acid, high amount of phosphoric acid and high leaching temperature can promote the leaching of vanadium. With the sulfuric acid concentration of 425.6 g/L, leaching temperature of 90 °C, leaching time of 4 h and liquid-solid mass ratio 2:1, the vanadium leaching rate of 90 wt.% can be achieved. Meanwhile, about 15% of the consumption of sulfuric acid could be reduced with 39 wt.% phosphoric acid.

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