Rare earth polishing powder and production method thereof

Abstract

The invention discloses rare earth polishing powder and a production method thereof. As an abrasive substance, the polishing powder comprises CeO2, La2O3 and Pr6O11. The total rare earth oxides (TREO) are above 90wt%. Meanwhile, in the TREO of the 877-3 rare earth polishing powder, CeO2 accounts for 70-80%, La2O3 19-29%, Pr6O11 0.05-2% and Nd2O3 less than 0.2%. To ensure necessary polishing speed, fluorine element which has chemical action is added to the wet synthesis process and initial shaping of product granularity is controlled, so that the obtained 877-3 rare earth polishing powder can be used for fast producing polished surface with good polishing effect.

Description

technical field [0001] The invention belongs to the field of rare earth product preparation, in particular to a rare earth polishing powder and a manufacturing method thereof. Background technique [0002] Since the second half of 2006, the domestic crystal lighting balls, rhinestones, and ironing diamond industries have developed very rapidly, and the amount of polishing powder in this industry has also increased rapidly. However, the application of conventional rare earth polishing powder in this industry has slow polishing speed, Poor polishing effect and other shortcomings, the total amount of rare earth in rare earth polishing powder is generally 88wt%-90wt%, the content of cerium oxide CeO2 accounts for 60wt%-70wt% of the total amount of rare earth oxide TREO, lanthanum oxide La 2 o 3 Content in the proportion of total rare earth oxides TREO 25wt%-35wt%, praseodymium oxide Pr 6 o 11 The content of TREO accounts for 5wt%-10wt% of the total amount of rare earth oxides...

AI Technical Summary

Problems solved by technology

[0002] Since the second half of 2006, the domestic crystal lighting balls, rhinestones, and ironing diamond industries have developed very rapidly, and the amount of polishing powder in this industry has also increased rapidly. However, the application of conventional rare earth polishing powder in this industry has slow polishing speed, Poor polishing effect and other shortcomings, the total amount of rare earth in rare earth polishing powder is generally 88wt%-90wt%, the content of cerium oxide CeO2 accounts for 60wt%-70wt% of the total amount of rare earth oxide TREO, lanthanum oxide La 2 o 3 Content in the proportion of total rare earth oxides TREO 25wt%-35wt%, praseodymium oxide Pr 6 o 11 The content of TREO accounts for 5wt%-10wt% of the total amount of rare earth oxides, neodymium oxide Nd 2 o 3 The proportion of the content in the total amount of rare earth oxides TREO is less than 0.2wt%; the proportion of fluorine F in the total amount of rare earth oxides TREO accounts for 3wt%-5wt%