with a cubic habit, though octahedral and more complex isometric forms are not uncommon. Crystal twinning is common and adds complexity to the observed crystal habits

Size:5-25mm 10-30mm 10-50mm  or Customized Packing: 1mt bag or Customized 

Granule size:0-1mm 0-2mm 0-3mm 1-3mm 3-5mm 3-8mm 0-8mm or Customized 

Powder size:70-100mesh, 200mesh, 325mesh, etc.
Mainly used as a flux in the manufacture of steel in basic open hearth, basic converter and electric hearth in metallurgic industry. It can enhance the fluidity of slag and promote the entry of sulfa and phosphor into slag, thus improve the quality of steel. It can also be used in metallurgy of non-ferrous metal, welding material, optical elements, decoration of lamp sand lanterns and fluorspar carving craftwork.