けい光X線分析のためのフェロアロイの粉砕方法

概要

論文の詳細を見る
Methods for crushing of ferroalloys to be suitable for their fluorescence X-ray analysis were studied. Powders of Fe-Mn, Si-Mn, Fe-Cr, Si-Cr and Ca-Si crushed about 200 μ in size were ground in the roulette mill in CO2 atmosphere to avoid oxidation. The results indicated that 30 sec. grinding was the most favorable, and that the optimum weight of sample is 3040 g. The flow rate of CO2 should be 2000 ml per min. Under this condition, particle size of resulted powder were maintained at 48μ. Contents of Mn, Cr, Ca and Si were not so changed in most alloys, but they were decreased about 0.5% in some alloys. To minimize decrease of contents, another experiment of roulette mill grinding was done in vacuum, but the result was not greatly different from that in the CO2. stream.
社団法人日本分析化学会の論文