The downstream process refers to the consistent flow of material and hot air in the dryer, and the reverse flow process refers to the opposite flow of the material and hot air in the dryer. The countercurrent process is simple in operation and low in dust concentration in the outlet, which is convenient for dust collection. However, the following disadvantages exist, which seriously restrict the normal production of drying materials, especially slag. It is not easy to seal, and the sticking phenomenon is serious. During the drying process, the power of the flue gas flow is formed by the negative pressure gradient of the spiral helical classifier. Because the feed inlet of the countercurrent drying system and the exhaust outlet of the exhaust gas, the discharge port and the inlet of the hot air are at the same position, resulting in serious air leakage, the system cannot form a stable negative pressure, and the spiral helical classifier cannot form stable negative pressure power, resulting in supply The hot air of the hot system hardly enters into the dryer to participate in heat exchange. On the other hand, the countercurrent drying material has a high moisture content in the low temperature stage, and the material is baked to the crust in the peristaltic process for a long time. The mutual adhesion is strong, the movement is not smooth, and jamming is likely to occur during continuous feeding.

With the increasing demand for cement and the backwardness of cement production technology, cement production has to be accelerated. Limestone and coal gangue are one of the main raw materials for cement production, and the source of raw materials is wide. In the cement production process, most of the raw materials are processed. Broken, such as limestone, clay, iron ore and coal. Limestone is a raw material for the production of large amounts of cement. After mining, it has a larger grain size and a higher hardness. Therefore, it needs to be broken by a crusher. For example, the hammer crusher of Henan Xiazhou Heavy Industry Co., Ltd. has prominent benefits in cement production. Limestone occupies an important position in the material crushing of cement plants. Mortar mixer is mainly used in the construction industry, universities, research institutes, quality inspection departments for wall mixers and mortar mixers for brick wall strength testing. Insulation mortar mixer equipment can meet the production needs of dry mortar, dry powder materials, dry powder binders and other performance requirements, and has many advantages such as small area, low investment, quick effect, simple operation and so on. What is the operating procedure of the mortar mixer?