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(3)颗粒大小 钾的释放速度还与矿物颗粒大小有关.随着云母颗粒的减少,在代换作用的第一阶段中钾的代换速度显著增高.细粒白云母的代换作用在几天内即完成,而粗粒白云母则要持续数月以上.但是从细颗粒白云母代换出来的钾的最大量比较低.由图5可见0.2～0.7微米的白云母,钾的代换作用十天内可以完成,但代出来的钾只有总钾的70%;10～20微米的粗颗粒,代换作用要二年才能完成,但是几乎可以把全部钾代换出来(大于90%).
(3) The release rate of K is also related to the size of mineral particles.With the decrease of mica particles, the exchange rate of K is significantly increased in the first stage of substitution.Male micritic substitution effect in a few Days to complete, while the coarse mica will last for more than a few months.But from the fine white muscovite substitution out of the maximum amount of potassium is relatively low .Figure 5 shows 0.2 to 0.7 microns muscovite, potassium substitution The effect can be completed in ten days, but the potassium produced on behalf of only 70% of the total potassium; coarse particles of 10 to 20 microns, the substitution takes two years to complete, but almost all potassium substitution (greater than 90%).