Tin Ore Dressing Process
Because the density of cassiterite is higher than that of symbiotic minerals, the traditional process of tin ore beneficiation is gravity beneficiation. With the passage of time, the particle size of cassiterite in the selected ore continues to become finer, and the cassiterite flotation process appears. In addition, because tin minerals often contain various iron oxide minerals, such as magnetite, hematite, and limonite, these minerals cannot be separated from cassiterite well by flotation and gravity separation. Magnetic separation has recently appeared in the tin ore beneficiation process. At present, most of the float-gravity beneficiation process is used in tin ore dressing process.
Application
The tin ore flotation process is suitable for minerals such as magnetite and hematite associated with tin ore.The characteristics of tin ore determine its process principles: gravity washing is the main method, physical beneficiation methods such as gravity separation, magnetic separation, flotation, and electric separation are combined with chemical beneficiation methods such as roasting, extraction and leaching; the process adopts multi-stage grinding and beneficiation. , Strengthen operations such as pre-selection and desliming.
The tin ore flotation-gravity separation process is: the raw ore is crushed to 20mm, the one-stage closed-circuit grinding to 0.074mm (200 mesh) accounts for 60% to 65%, the mixed flotation is one coarse, two sweeps and one fine; copper-sulfur separation grinding to 0.074mm accounts for 95 % One roughing, two sweeping and three fines, producing copper concentrates and sulphur concentrates; mixed flotation tailings are re-selected for sulfide and then re-selected. After the first and second stages of bed selection; primary rewashing; mud separation; tin coarse concentrate desulfurization flotation to produce tin concentrate and rich middle ore.
Flotation machine is the key equipment in tin ore flotation equipment, and it is also an indispensable equipment. Now the flotation machine produced by Henan Victory has been rationally designed, and has a more reasonable structure than traditional flotation machines, higher automation level, more advanced flotation technology, and high separation accuracy. It has a good taste for tin ore concentrates. High, can well achieve the purpose of beneficiation.
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