Taper Double-Screw Spiral Mixer
Taper double-screw spiral mixer Overview:
Through revolution and rotation of the screw, the materials make complex movements in the cone, which mainly include the four movement types:
â—The screw makes revolution along the walls to make the materials make circumferential movement along the conical walls.
â—The screw makes rotation to make the materials rise along the screw from the conical bottom.
â—The screw makes revolution and rotation to make some of the materials absorbed into the cylindrical surface of the screw. Under the centrifugal force produced due to rotation of the screw, some of the materials in the cylindrical surface of the screw are discharged radially towards the cone.
â—The rising materials fall due to their gravity. The four movements produce convection, shearing and dispersion in the mixer so as to realize the purpose of fast and even mixing.
Application:
It is widely used for mixing, reaction, drying and cooling of powders and powders (solid-solid), powders and liquids (solid-liquid) and liquids and liquids (liquid0liquid) in such industries as chemical industry, medicine, pesticide, dye, petroleum, metallurgy, building materials, etc.
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The development plan for the shaft passing through the ore body is shown in Figure 7-4 . The advantage of this method is that the length of the stone gate is short, and the third-level minerals are submitted faster during the infrastructure construction; the disadvantage is that in order to maintain the shaft, a security pillar must be left. This approach is seldom used in rare metals and precious metals deposits, because the security pillar of the wellbore was too often considerable. In the production process, when preparing the mining plan and the statistics of the third-grade ore, this part of the ore is generally to be deducted. It is possible to carry out the recovery at the end of the mine production, and special measures are taken, which not only increases the mining cost, but also recovers. The rate is extremely low. Therefore, the application of this scheme is limited, and can only be used when the inclination of the ore body is small (generally around 20o ), the thickness is small, the distribution is wide, or the ore value is low.