in this paper, quick determination of the content of the effective phosphorus in the new calcium superphosphate by means of potentiometric titration has been researched.
研究了用电位滴定法快速测定新鲜过磷酸钙磷肥中有效磷含量的方法。
impact of mixing phosphate ores on calcium superphosphate production;
对普通过磷酸钙生产系统进行了分析研究。
cattle manure and calcium superphosphate were main polluting material.
牛粪、过钙是基质中主要镉污染物质。
through a series of laboratory and small pilot scale continuous experiments, the feasibility of urea - calcium superphosphate production with yichang phosphorous ore has been proved .
通过一系列的实验室试验和小型中间连续试验,明确了宜昌磷矿制尿素过磷酸钙的可行性。
the mechanism was studed by m spectroscopy that paper making waste water and phosphatic manure waste water control calcium superphosphate moisture.