Filtration of copper concentrates in the mining industry is carried out in cycles, mainly cake formation, expression, and blowing. Each of these cycles depends on the solid (mineralogy, porosity, particle size distribution), water, and air (density, viscosity, permeability, and relative permeability) properties that define the performance in each cycle. The fundamental phenomenon in cake formation and expression is a one-phase flow (water) through a porous bed of solid particles (the cake), while in blowing it is a two-phase flow (water and air) through the cake. Sometimes, due to a change in the properties of the mineral, a filtration plant is unable to maintain the capacity at the specified humidity. One alternative to solve this problem is to heat the air during the blowing cycle, which in turn heats the water in the cake, this process significantly decreases the water viscosity and only marginally increases the air viscosity. In this work, this strategy was studied at a laboratory scale. The results show a significant decrease in the blowing time as the temperature of the air was increased.

采矿业中铜精矿的过滤是循环进行的，主要是结饼、压榨和吹扫。这些循环中的每一个都取决于定义每个循环中性能的固体（矿物学、孔隙率、粒度分布）、水和空气（密度、粘度、渗透率和相对渗透率）特性。饼的形成和表现的基本现象是通过固体颗粒（饼）的多孔床的单相流（水），而在吹气中是通过饼的两相流（水和空气）。有时，由于矿物特性的变化，过滤设备无法在指定的湿度下保持容量。解决这个问题的一种替代方法是在吹气循环期间加热空气，这反过来又加热了蛋糕中的水，该过程显着降低了水的粘度，而仅略微增加了空气的粘度。在这项工作中，该策略在实验室规模进行了研究。结果表明，随着空气温度的升高，吹气时间显着减少。