Bosite's fine-grained cassiterite recovery method, tin ore slime beneficiation method, cassiterite flotation collector
The beneficiation method of tin ore is determined by its own characteristics.
Since the density of cassiterite is higher than that of symbiotic minerals, the traditional beneficiation process for tin ore is gravity beneficiation. As time went by, the particle size of cassiterite in the selected ore continued to become finer, thus the cassiterite flotation process emerged. In addition, since tin minerals often contain various iron oxide minerals, such as magnetite, hematite and limonite, these minerals cannot be well separated from cassiterite by flotation and gravity separation. Therefore, in recent years, Later, magnetic separation operations appeared in the tin ore beneficiation process.
At present, most Yunnan tin companies have followed the float gravity beneficiation process that has been used in the sulfide ore workshop of Datun Processing Plant for many years. The process is: crush the raw ore, grind the ore in a closed circuit to . The coarse, two-sweep, and one-concentrate copper and sulfur are separated and ground to .%, and the copper concentrate and sulfur concentrate are mixed and flotation tailings are produced, and then the sulfide is separated and then gravity separation is carried out. After the first and second stage bed selection, a re-washing mud is used to select the tin coarse concentrate for sulfur removal and flotation to produce tin concentrate and rich medium ore.
Changpo mineral processing plant is one of the mineral processing plants affiliated to Dachang Mining Bureau. Its mineral processing process is shown in the figure. First, the raw ore is crushed and then screened into two particle sizes: ~ and ~, and then enters the heavy medium cyclone for pre-selection. The heavy products of the heavy medium cyclone are pre-selected by jig after a section of rod mill, and the jig tailings are screened out by vibrating screen and treated as waste tailings, and then enter the shaking table for separation. Jig and shaker concentrates and medium ores are divided into rich and poor systems according to grade, and are reground and mixed flotation respectively. The mixed flotation tailings are subjected to shaking table separation to produce qualified tin concentrate. The mixed flotation concentrate is then finely ground for lead and zinc separation and flotation, and lead, antimony and zinc concentrates are produced respectively. The gravity separation sludge enters the cyclone, and the overflow passes through the cyclone and hydrocyclone groups to remove fine mud. The sedimentation sand is concentrated, flotated and desulfurized before cassiterite flotation is performed.
Henan Bosite Machinery Manufacturing Co., Ltd. produces various types of ball mills, crushers, magnetic separators, magnetic agglomeration gravity concentrators, spiral classifiers, flotation machines, high-frequency screens, fiberglass shakers, spiral chutes, Tailings recovery machine, dryer, granulator, pelletizing machine, filter, centrifugal concentrator and other mineral processing equipment: <=_
Bosite micro-grained cassiterite recovery method, tin ore slime beneficiation method, cassiterite flotation collector