Vanadium-titanium magnetite beneficiation method
Vanadium-titanium magnetite ore is densely symbiotic with Fe and Ti forms TiO2 in titanomagnetite (about 53% of total TiO2 reserves in Panxi area), due to the state of occurrence, particle size, and most of the smelting in blast furnace Factors such as the chemical reaction characteristics of reducing TiO2 into the slag are still difficult to recycle by mechanical beneficiation methods. However, with the improvement and improvement of the smelting process and technology by the Panzhihua Iron and Steel Research Institute and the Beijing Iron and Steel Research Institute on the comprehensive recovery of iron, titanium and vanadium from titanium magnetite, the process has been basically completed and positive results have been achieved. . In addition, tests have been carried out to reduce the amount of iron powder and to recover vanadium and titanium. The process is: Vanadium-titanium iron concentrate - iron powder Ramp kiln carbon reduction - V2O5 Crushing grinding - vanadium-rich titanium material - wet separation - heavy magnetic separation - TiO2 Ilmenite, rutile placer: This is the main type of ore China's current production of ilmenite and rutile concentrate. In order to improve the utilization rate and economic benefits of resources, reduce the backlog of mines and tailings, and pollution to the environment, the Guangzhou Institute of Nonferrous Metals has studied the occurrence of titanium and the comprehensive recovery methods of the difficult minerals in Hainan Island. (Proceedings of the Third National Conference on Comprehensive Utilization of Mineral Resources, 1990). The research and experiments show that: 1 Titanium element mainly exists in the titanium-iron ore series formed by the isomorphous substitution of Ti4+ and Fe2+; ilmenite (containing TiO252%~54%) and iron-rich ilmenite The proportion of (including TiO246%) was 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, whitite and vermiculite. ② hard metal selected mineral ilmenite, zircon, monazite, rutile, anatase or the like mixed minerals, mineral grain size 0.2 ~ 0.08mm (genus optional particle size); using diiodomethane media as "ups and downs" beneficiation, gravity <3.3 of the non-useable minerals have an uplift rate of 19.76%, and the useful heavy minerals with a specific gravity of >3.3 have a sinking yield of 73.5%. 3 In the heavy minerals that sink, in addition to the main ilmenite, it can comprehensively recover zircon, monazite, titanium-rich ilmenite and rutile; its effective beneficiation process is two: one is the use of useful heavy minerals by electromagnetic selection The field strength 6000Oe sorted out the magnetic product (TiO243%) which accounts for 88.1% of the ilmenite mineral content, and then oxidized and roasted at 800 °C for 10 minutes, and finally the field strength 650Oe weak magnetic separation, TiO250% can be obtained in the magnetic separation product. ~51% of ilmenite concentrate products; the second is useful heavy minerals (ilmenite concentrate, containing TiO243%~46%) by electro-election (2.1kV, 120r/min), available in conductor products TiO251% to 53% of ilmenite concentrate products. 4 In the tailings with a field strength of 8000-12000 Oe magnetic separation, flotation can be used to obtain a qualified monazite concentrate; then, in the non-electromagnetic heavy mineral tailings with a field strength >20000 Oe magnetic separation, Electrically selected to obtain a qualified zircon concentrate in a non-conducting product and a qualified rutile concentrate in a conductive product. More than 90% of titanium ore resources at home and abroad are used to produce titanium white and titanium white production processes, mainly advanced chlorination, hydrochloric acid and traditional sulfuric acid. Pulverizers are machines that pulverize large solid materials to the required size. Pulverizer Machine,Crushing Machine,Milling Machine,Grinding Mill, Grinding Machine JIANGYIN CITY XUAN TENG MACHINERY EQUIPMENT CO.,LTD , https://www.xuantengmachine.com
Vanadium-titanium magnetic iron ore: This is the main type of ore rock ilmenite deposits in China. According to the beneficiation research and production practice of Panzhihua Mining Company, the ore dressing of ilmenite concentrate is in the magnetic separation process of the vanadium-titanium magnetite ore after a period of grinding (-0.4mm), a coarse, a fine, and a sweep. The magnetic tail (mine) after the magnetite concentrate (Fe 51% to 52%, TiO 212.6% to 13.4%, V2O 50.5% to 0.6%) was carried out.
According to the size of the crushed material or the crushed material, the mill can be divided into coarse crusher, medium crusher, fine mill and superfine mill. There are four kinds of external forces applied to the solid in the grinding process: pressing, cutting, impact and grinding. Press rolling is mainly used in coarse and medium crushing, suitable for the crushing of hard materials and bulk materials. Shearing is mainly used in fine crushing, suitable for the crushing of ductile materials. Impact is mainly used in medium crushing, fine grinding, ultrafine grinding, suitable for crushing brittle materials. Grinding mainly in fine grinding, ultrafine grinding, suitable for small pieces and fine particles.
The crusher makes use of the high speed relative motion of the movable tooth plate and the fixed tooth plate, so that the crushed object can be crushed by the comprehensive action of tooth impact, friction and the impact between the materials. The crusher is suitable for crushing Chinese herbs, precious medicinal materials, ores and chemical raw materials in small batches in various varieties, alloys, metallurgy, geology, scientific research and other units.
The pulverizer machine has the advantages of simple structure, solid, stable operation and good crushing effect. The pulverized material can be discharged directly from the grinding chamber of the main machine. The particle size can be obtained by replacing the mesh screen with different aperture. The powder collecting chamber adopts the completely closed silencer structure, which can effectively reduce the working noise. In addition the machine is all stainless steel. The inner wall of the casing is machined to achieve smooth surface, which changes the phenomenon of rough inner wall and powder accumulation of the previous models, so that the production of drugs, food, chemical industry and so on is more in line with national standards and meet the requirements of GMP.