求翻译：磷石膏是生产湿法磷酸所产生的一种工业废渣，其CaSO4•2H2O含量非常高，但目前未能得到有效利用，主要原因在于杂质对其应用性能会产生不利影响，因此，磷石膏除杂研究的开展将极大地拓宽磷石膏的应用领域。是什么意思？

Phosphogypsum is generated by the production of wet process phosphoric acid residue of an industry, its the caso4 • 2h2o content is very high, but the current lack of efficient use, mainly due to the impurity of their application performance will be adversely affected, therefore, the phosphogypsum i

Phosphor gypsum is wet phosphate production resulting from an industrial waste, its CaSO 4 •2 2 O H content is very high, but do not currently being used efficiently, mainly due to impurities in the performance of their application will have a negative impact, therefore, phosphor gypsum in addition

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Phosphorus gypsum production resulting from wet-process phosphoric acid is an industrial waste, CaSO4 · 2H2O content is very high, but failed to get a valid use, mostly because of impurities on its application would have a negative impact on performance, therefore, study on the impurity of phosphogy

The phosphorus gypsum produces one industry waste residue which the aqueous method phosphoric acid produces, its CaSO4•The 2H2O content is extremely high, but at present has not been able to obtain the effective use, the primary cause lies in the impurity to be able to have the adverse effect to its