Vanadium titanium magnetite tailings recleaning process

Abstract

The invention belongs to the technical field of beneficiation, and provides a vanadium titanium magnetite tailings recleaning process. The process comprises gravity magnetic pull concentrating machinepreconcentration, ball mill and cyclone closed circuit, spiral chute roughing, spiral chute selection, operation by a three-segment table concentrator, weak magnetic separation, fine magnetic separation and operation of magnetic separation columns. Vanadium titanium magnetite tailings are fed into a gravity magnetic pull concentrating machine to be subjected to preconcentration, the concentratespre-concentrated by the gravity magnetic pull concentrating machine are fed into a cyclone, cyclone sand setting is fed into a ball mill to be subjected to grinding and then returns to the cyclone, overflow of the cyclone is fed into a spiral chute to be roughed, the concentrates obtained after the spiral chute roughing are fed into a spiral chute to the concentrated, the concentrates obtained after spiral chute selection is treated through the three-segment table concentrator, the concentrates of the three-segment table concentrator are subjected to weak magnetic separation, the tails obtained after weak magnetic separation are titanium concentrates; the concentrates obtained after weak magnetic separation are fed into the magnetic separation columns; and the concentrates obtained after operation of the magnetic separation columns are iron concentrates. Iron and titanium metal in the vanadium titanium magnetite tailings are recycled, and sufficient use of natural ore resources is achieved.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, in particular to a process for re-selecting vanadium-titanium magnetite tailings. Background technique [0002] As a kind of iron ore and the main source of titanium, vanadium-titanium magnetite is distributed in many countries in the world, such as the Midwest of my country, Russia, the United States and so on. The main useful metals of this type of ore are iron, titanium and vanadium, but vanadium generally exists in the form of vanadium-iron spinel, which can only be obtained by smelting, so the useful minerals that can be obtained by beneficiation are iron and titanium. The iron content of this kind of ore is generally not high, mostly between 15% and 25%, TiO 2 The content is generally between 3% and 8%. Generally, titanomagnetite is associated with ilmenite, and some of the two minerals are in a continuous state when they are coarse-grained. Due to the low iron and titanium co...

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Problems solved by technology

[0003] However, with the above method, most useful minerals are often not dissociated, and the yields of titanium and iron in the tailings are all above 50%. If this part of titanium and iron in the tailings is not re-selected and recovered, resources The great waste, especially the waste of rare and precious metal titanium

However, it is generally difficult to obtain high-quality titanium concentrates and iron concentrates due to the limitation of recovering iron and titanium from tailings, which affects the price and sales, so the current utilization rate of this kind of tailings is extremely low

Even if this kind of tailings is re-selected, in order to reduce energy consumption, ore grinding is often not used, but various sorting methods are used to salvage the tailings. The quality of this salvaged concentrate is difficult to improve. The grade of concentrate is difficult to break through 50%, the content of titanium dioxide in titanium concentrate is difficult to exceed 35%, and the recovery rate of titanium and iron relative to tailings feed is generally difficult to exceed 20%

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