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在流态化气体还原铁矿时,在远低于矿物组成的熔化、软化的温度下,矿粉往往粘结、床层失流,严重地影响着工艺过程的顺利进行。为了充分利用高温对于提高反应速度、提高还原气体单程转化率的作用,工艺设计尽量希望采用高温操作,但是粘结、失流阻碍了这一企图的实现。要寻求提高操作温度的途径,首先需查明造成粘结、失流的因素,
When the fluidized gas is used to reduce iron ore, the slag tends to bond and the bed stalls at a temperature much lower than the melting and softening temperature of the mineral composition, which seriously affects the smooth progress of the process. In order to make full use of the effect of high temperature on increasing the reaction rate and improving the single-pass conversion rate of the reducing gas, the process design tries to use high temperature operation as much as possible. However, the attempt to achieve this is hindered by adhesion and loss of flow. To find ways to improve the operating temperature, we must first identify the factors that cause sticking, loss of flow,