Properties of Three Sorghum Cultivars Used for the Production of Bili‐Bili Beverage in Northern Cameroon

The malting characteristics of sorghum malts produced locally in Cameroon for Bili‐Bili brewing were compared with those of malts produced in a laboratory. The analytical values of both malts were similar but the brewing potential of the laboratory malts were marginally better than those of the locally produced malts. Of the three cultivars examined, Madjeru had the lowest levels of β‐amylase, maltose levels and fermentability. The worts of the Madjeru filtered the slowest of the three malts. During malting β‐glucanase developed rapidly and development was temperature‐dependent.     

柏泉铁矿常温浮选磷的问题与应用探讨

常温浮选是一种打破传统矿浆加温浮选的创新举措,但针对不同区域的不同矿石又有着较为明显的差异。本文以承德地区的柏泉铁矿为代表,在气温条件较低的前提下,研究该区域含磷铁矿石的矿石性质,以及常温浮选回收磷的工艺流程。从矿石性质、粒级、浮选时间、浮选现象、水玻璃的作用等方面进行深入分析,提出提高选磷回收率的改进应用意见,如提高浮选浓度、矿浆液位、刮板转速和优化入浮原矿粒级等,将推动冀东地区常温浮选低品位磷的技术进步。