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本文回顾有关悬浮分层的临界速度公式,发现与实验结果相差很远;指出其在原理上的缺陷.作者从重介的原理出发,导出新的临界速度公式v_(xp)=v_o_2(1-(δ_1-Δ)/(δ_2-Δ))~(n_2).用统计分析的方法处理各实验值,证明该公式的可靠性.最后指出该公式的应用条件是:两种矿粒的粒度比D_1/(D_2)>3～5;两种矿粒的比重差符合(δ_2-Δ)/(δ_1-Δ)>3.
This paper reviews the formula of the critical velocity of suspension stratification and finds that it is far from the experimental results and points out its defects in principle.The author derives a new critical velocity formula v_ (xp) = v_o_2 (1- ( δ_1-Δ) / (δ_2-Δ)) ~ (n_2) .Through statistical analysis of the experimental data to prove the reliability of the formula.Finally, the application of this formula is indicated as follows: / (D_2)> 3 ~ 5. The difference of specific gravity between the two kinds of minerals is in line with (δ_2-Δ) / (δ_1-Δ)> 3.