钢渣制取硅钾肥的缓释性分析

通过变化"脱硅渣改性制取长效硅钾肥工艺"中影响硅钾肥缓释效果的各因素的水平,在水和柠檬酸溶液中分别测定酸性制得的硅钾肥中钾的溶出率。进而通过对实验数据做统计回归分析,并结合Trenkel提出的缓释肥标准,对改性后脱硅渣的缓释性进行了初步分析。结果表明,脱硅渣在各种实验条件下改性制得的硅钾肥均具有明显的缓释性;钾在水中的溶出率小于其在柠檬酸溶液中的溶出率。

Slow-releasing property analysis of modified silicon-potash produced from desiliconized slags from Liquid Iron

Through changing the level of each factor which influences the slow-release characteristics of silicon-potash fertilizer in "The technics of modifying desiliconized slags into slow-release silicon-potash fertilizer",the release rate of potassium in the modified silicon-potash fertilizer was determined in water and citric acid solution,respectively.And then by making statistical and regression analyses of experimental data,and considering the criterions of slow-release fertilizer put forward by Trenkel,a tentative analysis was made for the slow-releasing characteristics of this modified desiliconized slag.Results showed that the silicon-potash fertilizers that were modified under different experiment conditions all had obvious slow-releasing properties and the release rate of potassium in water is less than that in citric acid solution.