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Innovative New Ventures of MORITA CHEMICAL INDUSTRIES CO., LTD.

Fluorine Recycle Business

Fluorine Recycling System

Currently, acid grade fluorite (pure grade of 97% or higher, less than 1% silica), which is a raw material of hydrofluoric acid, is one of the recyclables that is in grave danger of depletion within this generation. Therefore, by collect high-purity calcium fluoride from fluorine wastewater, and establishing technology to create new hydrofluoric acid using the calcium fluoride as raw materials, we aim for a recycling system that reduces more than 90% of the fluorine in wastewater.

Fluorine Recycling System

Aspects of High-Purity Calcium Fluoride Collection

  • Fluorine wastewater with a wide range of fluorine densities, from 1,000 ppm to 10+ percent (*), can be handled.
  • High-purity calcium fluoride of a grade of 98% or more can be obtained.
  • Because the particle size is moderately large (20 to 50 µm), the moisture content after drainage becomes roughly 5%, and the risk in the work area, such as dust when materials are transported, is reduced.
  • Because more than 90% or more of the fluorine in waste water can be collected, the final amount of industrial waste is drastically reduced.
  • The reaction of collected calcium fluoride, compared to natural fluorite, progresses faster at lower temperatures when manufacturing HF.
(*) Dilute Fluorine wastewater of 10+ ppm can be handled by concentrating the Fluorine.
The concentration mechanism is introduced separately.

Introduction of These Technologies

MORITA CHEMICAL INDUSTRIES CO., LTD. strives to recycle as much fluorine as possible, aiming for a business structure that is environmentally responsive. To do this, Morita has "processes for obtaining fluorine wastewater," as well as "installation of calcium fluoride collection equipment." For each method, because there are a wide variety of waste water compositions, first the possibility to apply these technologies is tested.

Collection process of fluorine waste water and Installing equipment to collect calcium fluoride Fluorine recycling plants are in operation at our Sakai Plant. In February 2007, the pilot plant of hydrofluoric acid manufacturing (*) using collected calcium fluoride for the raw materials was completed and is currently in operation.
(*) Business on a grant of NEDO (New Energy and Industrial Technology Development Organization) (2005)

Entrusted Analysis Business

As a maker specialized in inorganic fluorine chemistry with vast experience, we have a mind-set for being "Correct and Rapid" handling analysis needs from the accumulation of technologies and gathering cutting edge analysis equipment for composition analysis to ultratrace analysis.

  Main Equipment Analysis Example
Analysis of Components
  • Inductively Coupled Plasma Mass Spectrometer (ICP-MS)
  • Inductively Coupled Plasma-Atomic Emission Spectrometry (ICP-AES)
  • Atomic Absorption Spectrographometer (AAS)
  • Atomic Absorption Spectrographometer
  • Ion Chromatograph
  • Gas Chromatograph
  • Oxygen/Nitrogen Analyzer
  • Other
  • Trace metals of semiconductor chemicals and anion analysis
  • Analysis of very small amounts of metal in various compounds
  • Fluorine content of various compounds
  • Oxygen/nitrogen analysis of various of compounds
  • Other
Materials Evaluation
  • X-ray Fluorescence Analyzer
  • X-ray Diffractometer
  • Differential thermobalance
  • Laser diffraction particle size analyzer
  • Specific surface area analyzer
  • Other
  • Composition of various compounds and impurity analysis
  • Particle size analysis
  • Specific surface area
  • Thermal analysis
  • Other