Phosphatic fertilzers are all derived from calcium salts of phosphoric acid and these are found as raw bones apatite and phosphate rock.
无论什么磷肥，全都来自含钙的磷酸盐。生骨粉，磷灰粉，磷灰石含有大量的这种盐类。
2
Preparation method and chief process conditions of food grade calcium hydrogen phosphate from Kiln - way phosphoric acid are investigated and corresponding flow path is presented.
探讨了由窑法磷酸制备食品级磷酸氢钙的方法和主要工艺条件，提出了相应的工艺流程。
3
Production technologies of food grade calcium hydrogen phosphate such as phosphoric acid purification method, bone glue extraction method and applications are introduced in detail.