由锻烧白泥和钾长石和它的环境评价的混合物准备土壤营养素改正的一个新奇方法被调查。在为到钾长石的白泥的 70:30 的相配的集体比率的最佳的条件下面, 1 000 的锻烧温度
A novel method to prepare soil nutrient amendment by calcining a mixture of white mud and potassium feldspar and its environmental assessment were investigated. Under the optimal conditions of a blending mass ratio of 70:30 for white mud to potassium feldspar, a calcination temperature of 1 000 ℃, a calcination time of 1.5 h and spherulitic diameter of 2.0 cm, the calcined product, as a soil nutrient amendment, could be prepared with the following nutrient composition (mass fraction): K20 4.16%, CaO 23.43%, MgO 5.04%, SiO2 22.92%, SO4^2- 3.71%, and Cl 3.87% in 0.1 mol/L citric acid solution. The concentrations of heavy metals in the calcined product and the emission concentrations of harmful gases from a mixture of white mud and potassium feldspar during calcination process could qualify the National Standards without causing secondary environmental pollution.