1 The phosphorite in the study area was first divided into ten main ore types affiliated to two groups of primary and weathered phosphorite.

2 The crude phosphoric acid made from low-grade phosphorite was successfully purified through the steps of solvent precipitation, defluorination and desulfuration etc.

3 The Baideng phosphorite deposit is of shallow-sea facies; while the Qinglongshao phosphorite belongs to continental facies.

4 The phosphorite resources and the present status of phosphorus chemical industry in Yunnan province are introduced.

5 The Brief Analysis of Marketing : The phosphorite is widely used in the phosphorus salt chemical industry and the market demand gap is so big that the foreground is prosperous.

6 Owing to the exploitation of phosphorite and phosphorus's unilateral cycle in nature, phosphorus resource is increasingly exhausted.

7 It is considered that the phosphorite in this area formed in a comparatively wide environment from the sites above or below the basement surface of wave to the sites around the oxygenic surface.

8 Through late regional metamorphism, the phosphorite was turned into the apatite deposit.

9 The harms and treating situation of phosphorite floatation wastewater are described, in which the virtues and deficiencies of treating methods are discussed.

10 Owing to the exploitation of phosphorite and the unilateral circulation of phosphorus in nature, phosphorus resource is increasingly exhausted.

11 A phosphorite used as lube friction modifier was synthesized by phosphonic aryl ester and fatty alcohol using ester exchange method in laboratory.

12 The influence of ultrasonic wave on the phosphorite acid decomposition was studied.

13 The substrate is mainly basalt and volcanic clastic rock, and then limestone and phosphorite in seamounts MA, MC, MD, ME, MF from Magellan seamounts.

14 On the basis of the characteristics of stratigraphy and petrology, this study focuses on the forming environment, origin and mechanism of the phosphorite in Lower Cambrian of Kuruktag, Xinjiang.

15 It is proved that adding some reactants, such as F, Ca and phosphorite, to solution containing phosphorus can markedly reduce the phosphorus contents in the solutions.

16 After initial sediment and consequent concentration,[www.Sentencedict.com] the formation of the phosphorite is related closely to the paleogeography.

17 Based on the above, some suggestions on reasonable exploration and utilization of the phosphorite resources in our country are raised.

18 Environment risk analysis of dam debacle in tailing pond in rainstorm for construction of phosphorite beneficiation plant with the craft of reelection-flotation was studied.

19 Mineral composition, process characteristic and floatability of heavy rare earths in phosphorite ore in Guizhou are summarized in this paper.

20 The ideal P ore concentrate can be obtained by simply Rubbing-Washing-Demudding the weathered phosphorite in Dianchi area, which starts a new way in the P ore dressing of China.