从化学加工工艺谈磷矿物的分类及其意义

作者认为磷矿物是以固溶体形式出现的一组含氟磷酸钙盐,多种矿物盐的组合常以其最为稳定的形式,即能量最低的状态存在。因此,作者对磷矿物的分类不是从矿物类型而是以能量方程式所具有的特征系数进行分类。根据矿物类型建立P_2O_5枸溶率、晶胞参数a_0轴的模拟方程。分类结果:自然界的磷矿物共分高氟磷灰石、富氟磷灰石、低碳氟磷灰石,氟磷灰石和低氟磷灰石五类。由于磷矿物中的氟含量直接影响了磷矿物的各种性质,而磷矿煅烧(包括脱氟磷肥生产)过程实质上是模拟磷矿在自然界的变质过程,使P_2O_5枸溶率和化学反应性下降。因而可根据本文分类对磷矿物的应用进行直接评价。

CLASSIFICATION OF PHOSPHATE MINERALS FROM CHEMICAL PROCESSING TECHNOLOGY AND ITS IMPORTANCE

The author thinks that the phopsphate minerals are solid solution consisted of flourphosphate minerals. Various minerals exist in the most stable state i. e. the lowest energy state. For this reason, this classification is based on the characteristic parameters of energy equations,not the types of the minerals. Based on the types of the minerals,the equation of citrate soluable P2O5,unit cell a0 axis are established. The results are:The natural phophate minerals can be classified into five categories; high fluorine apative,Low flourine apatite ,carbonate fluorine apatite ; fluorine apatite and low fluorine apatite; the fluorine content of the apatite directly affects the characters of the ores,after the calcination of the ores (including the defluoride phosphate fertilizer production) is actually simulating the process of the reduction of fluorine of ores in nature. Because of the calcination makes citrate soluable P2O5 and chemical reactivity decreased. Therefore,it can be directly to evaluate the application of phosphate minerals.