磷石膏、粉煤灰在硅钙硫肥料生产中的应用

本文研究了利用磷酸厂副产品——磷石膏和燃煤热电厂固体废弃物——粉煤灰为主要原料。经科学配制直接生产硅钙硫肥料，解决了磷石膏作为肥料直接施用时由于酸度高而只能用于碱性土壤。以及粉煤灰单独施用时肥效低等问题。生产的硅钙硫肥料含有丰富的硅、钙、硫等中量营养元素和铁、镁、铜、锌、硼等多种微量元素。研究结果表明，该肥料显中性，属于枸溶性肥料，可以施用于各种类型土壤和多种作物。具有明显的改土培肥效应和增产提质效果。

The Utility of Phospho-gypsum and Fly Ash in Producing Fertilizer

In this paper,it was studied that using phospho-gypsum(the by-product of phosphoric acid facto-ry)and fly ash(the solid waste StlbStance of Coal flred power station)as the main raw materlal,by science in-stalled,prod uced silicon calcium sulfur fertilizer directly.It was resolved that the phosp ho-gypsum can only be applied to alkaline soil because of its high acidity and the manually effect of fly ash was low when they were used alone.There are abun dant mid nourish chemical elements:silicon,calcium,sulfur etc.and many kin d of little chemical elements:iron,magnesium,copper,zinc etc.in the silicon calcium sulfur fertilizer produced.It is resulted that the fertilizer shows the neuter gender,belong to the citrate soluble fertilizer,can apply to variou s types soil with carious farm crop,and can improve the soil,Keep fertilizer f rom running off and increase the yield and quality obviously.