Study on potassium borofluoride production process by waste acid from hydrofluoric acid production;

This method adopted sulfuric acid to decompose potassium borofluoride to form potassium sulfate, then sodium tetraphenylborate was added to precipitate potassium ions, and finally the potassium borofluoride content was determined on the basis of the weight of formed potassium tetraphenylborate.

Nb2O5 liquor is added into the Ta2O5 to form standard solution,then carry out chromatographic separating on paper after series of treatment with potassium fluotantalate sample parent solution.

Determinated micro-sulfur of potassium fluotantalate, Sensitivity of combustion-conductance method is 0.

The process of preparating potassium fluosilicate from the mother liquor of magnessium fluoride has been studied.

In the wet-process phosphoric acid production from the Hubei phosphate ore, one of the bothersome problems is that potassium fluosilicate and sodium fluosilicate scales are liable to form on the filtration system owing to its high potassium and sodium content, which greatly restrains the application of Hubei phosphate ore.

Thin layer soaking method is used to determine the contact angle of sodium fluorosilicate, potassium fluorosilicate, gypsum against phosphoric aicd.

Based on the platform of Aspen Plus engineering software, the production process of anhydrous hydrogen fluoride (AHF) from potassium fluorosilicate and sulfuric acid was simulated and analyzed.