Mineral separation process for vanadium titanium-magnetite products

Abstract

The invention belongs to the technical field of mineral separation, and provides a mineral separation process for vanadium titanium-magnetite products. The mineral separation process comprises a three-stage crushing process, a first-stage rod-milling and spiral grader closing process, a magnetic separation sub process, a desilicication reverse flotation process, a fine sieving process, a ferrovanadium mineral separation sub process, a desulfurization rough floatation process, a desulfurization cleaner floatation process, a two-stage table concentrator process and a titanium floatation process,wherein the magnetic separation sub process comprises a first-stage weak magnetic separation process, a second-stage ball-milling process, a swirler closing process, a second-stage weak magnetic separation process and a fine magnetic separation process. Concentrate with relatively good quality of iron, vanadium and titanium is obtained from vanadium titanium-magnetite, high-quality iron concentrate is obtained by taking ore-grinding decomposition minerals through the magnetic separation sub process, the desilicication reverse flotation process and the ferrovanadium mineral separation sub process, and titanium concentrate is simultaneously recycled; and desulfurization titanium selection is performed on magnetic separation tailings to obtain titanium concentrate with relatively low sulfurcontent, so that sufficient utilization of natural mineral resources is realized.

Description

technical field [0001] The invention belongs to the technical field of ore dressing, in particular to a three-product ore dressing process of vanadium-titanium-magnetite. Background technique [0002] The main type of iron ore in many iron mines is vanadium-titanium magnetite. The ore of this kind of mine generally contains about 15% iron, which is ultra-poor magnetite, TiO 2 The content is between 3%-8%, V 2 o 5 The content is 0.3-0.8%. About two-thirds of the iron in this ore exists in the form of titanomagnetite and ilmenite, the rest of the iron mainly exists in the form of pyroxene, and a small amount of iron exists in garnet, epidote, and chlorite . [0003] The quality grade of iron in vanadium-titanium magnetite is 68%, which is far lower than the theoretical iron grade of 72.4% in magnetite. It is difficult to improve, which brings difficulty to the utilization of this kind of ore resources. [0004] The occurrence form of titanium in the ore is also scattered...

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Problems solved by technology

In addition, generally this kind of ore also contains a certain amount of pyrite and chalcopyrite, so its sulfur content is relatively high, and this part of sulfur can easily enter the final titanium concentrate with flotation, affecting the quality of titanium concentrate and selling price

[0005] V 2 o 5 It mainly occurs in the form of symbiotic crystals in titanium magnetite, which is difficult to dissociate, and it is difficult to obtain usable vanadium concentrate through ore dressing

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