Potassium fluoride,anhydrous
           Potassium fluoride,extra pure
           Potassium fluoride,Granular
           Silicon Dioxide
           Hydrofluoric acid
           Synthetic Cryolite
           Potassium Fluoaluminate
           Ammonium bifluoride
           Potassium Bifluoride
           Aluminium fluoride
           Sodium fluoride
           Potassium Fluorosilicate
           Fluorosilicic Acid
           Sodium silicofluoride
           Potassium Hydroxide Flakes
           Magnesium Fluoride
           Magnesium fluorosilicate
           Barium Fluoride
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During the reaction of phosphate ore and sulphuric acid, silicon tetrafluoride (SiF4) and Hydrofluoric acid are formed as byproducts. These gases are usually scrubbed with water, forming fluorosilicic acid, H2SiF6 (FSA) as a waste stream. Until recent years, FSA was mostly used for drinking water fluorination and for the production of Aluminium Fluoride (AlF3) or, in most cases, was neutralised or disposed to sea or ponds. Research and pilot work for the industrialization of a process to produce hydrofluoric acid (HF) and anhydrous hydrofluoric acid (AHF) from FSA has been conducted for nearly six decades without having developed a process that was found suitable to be built on industrial scale. Buss ChemTech has scaled the process from pilot scale (800 t/a) in one step to full scale industrial plant. Since 2008, three plants with capacities of 12,000 and 20,000 tons (two plants) of AHF per year were erected and are in operation. 

The majority of fluorochemicals are produced by starting from fluorspar. From the early 1930ies, fluorspar is mixed with sulphuric acid and fed to a rotating kiln. The Hydrofluoric acid produced is cleaned, condensed and purified. With AHF as a base product and raw material, other chemicals are manufactured. With the growing demand for fertilizers and thus more and more production facilities starting up, the need to dispose of the FSA by-product grows. Gases containing fluorine will form in various places within the production of phosphoric acid.

Laboratory general use fluorite (mainly composed of calcium fluoride) and concentrated sulfuric acid to make Hydrofluoric acid, it need to be sealed in a plastic bottle, and stored in a cool place. Hydrofluoric acid can dissolve the glass (main component: silica), reaction of gaseous silicon tetrafluoride following equation:

SiO2(s) + 4 HF(aq) → SiF4(g) + 2H2O(l)

SiF4 can continue to generate excess HF, generating fluorosilicic acid: