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What is the beneficiation method of vanadium titanium magnetite?

Posted by: steel world 2023-11-02 Comments Off on What is the beneficiation method of vanadium titanium magnetite?

Vanadium titanium magnetite: This is the main ore type of ilmenite rock deposits in my country. According to the mineral processing research and production practice of Panzhihua Mining Company, the beneficiation of its ilmenite concentrate is a magnetic separation process in which the vanadium-titanium magnetite ore is ground in one stage (-0.4mm), one coarse, one fine, and one sweep. After the magnetite concentrate (Fe51%~52%, TiO212.6%~13.4%, V2O50.5%~0.6%) is produced, the magnetite tailing (ore) is processed.
Vanadium-titanium magnetite ore contains TiO2 that exists in titanium magnetite in the form of Fe and Ti in a fine coexistence (accounting for about 53% of the total TiO2 reserves in the Panxi area). Due to its occurrence, particle size, and smelting in a blast furnace, most of it has not been Factors such as the chemical reaction characteristics of the recovered slag in the form of TiO2 are currently difficult to recycle using mechanical beneficiation methods. However, with the improvement and advancement of the smelting process and technology through the comprehensive recovery of iron, titanium and vanadium from titanium magnetite by Panzhihua Iron and Steel Research Institute and Beijing Iron and Steel Research Institute, the process has been basically opened up and positive results have been achieved. In addition, experiments have also been carried out to recover iron powder by recovery grinding and comprehensively recover vanadium and titanium. The process is:
Vanadium ilmenite concentrate – iron powder
Suidao kiln carbon recovery——V2O5
Crushing and grinding – vanadium-rich titanium material – wet separation – gravity and magnetic separation – TiO2
Ilmenite and rutile placer: This is the main ore type currently producing ilmenite and rutile concentrate in my country. In order to improve the utilization rate and economic benefits of resources, reduce the backlog of mid-range mines and tailings, and reduce environmental pollution, the Guangzhou Nonferrous Metals Research Institute has conducted a special study on the “Occurrence of Titanium Elements in Refractory Minerals and Comprehensive Recovery Paths in Hainan Island Seaside Placer Mines” “(Proceedings of the Third National Academic Conference on Integrated Utilization of Mineral Resources, 1990). The research and experiments show that: ①Titanium element mainly exists in the titanium-iron ore series composed of isomorphous replacement of Ti4+ and Fe2+; among them, ilmenite (containing TiO252%~54%) and iron-rich ilmenite (Containing TiO246%) accounts for 66.2%, followed by titanium-rich ilmenite (containing TiO256%~58%) accounting for 19.2%, and titanium hematite (containing TiO210.7%~19.5%) accounting for 14.6%. In addition, titanium is also present in small amounts in rutile, anatase, leukosite and sphene. ② The refractory minerals are mixed mineral deposits of ilmenite, zircon, monazite, rutile, anatase, etc., with a particle size of 0.2~0.08mm (optional particle size); two media are used for “sink and float” mineral processing, with a specific gravity of <3.3 The floating removal rate of non-effective mineral deposits reaches 19.76%, and the sinking productivity of effective heavy mineral deposits with a proportion of >3.3 reaches 73.5%. ③In the sinking heavy mineral deposits, in addition to the main recovery of ilmenite, zircon, monazite, titanium-rich ilmenite and rutile can be comprehensively recovered; there are two effective mineral processing processes: one is that the useful heavy mineral deposits are electromagnetic separated The magnetic product (TiO2 43%) accounting for 88.1% of the ilmenite deposits is sorted with a field strength of 6000Oe. After oxidation roasting at 800°C for 10 minutes, and finally weak magnetic separation with a field strength of 650Oe, TiO250% can be obtained from the magnetic separation products. ~51% ilmenite concentrate product; the second is useful heavy mineral deposits (ilmenite coarse concentrate, containing 43% ~ 46% TiO2) which can be obtained from conductor products after electrical separation (2.1kV, 120r/min) TiO251%~53% ilmenite concentrate product. ④ From the tailings that have been magnetically separated with a field strength of 8000-12000Oe, flotation can be used to obtain qualified monazite concentrate; from the tailings from non-electromagnetic heavy mineral deposits that have been magnetically separated with a field strength > 20000Oe, flotation can be used Electric separation can obtain qualified zircon concentrate from non-conductive products and qualified rutile concentrate from conductive products.
More than 90% of titanium ore resources at home and abroad are used to produce titanium dioxide. The production process of titanium dioxide mainly includes advanced chlorination method, method and traditional sulfuric acid method.

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