The Panzhihua area is rich in vanadium- iron magnetite. Panzhihua Iron and Steel Co., Ltd. is the main enterprise for the recovery of vanadium- titanium magnetite. Although it has been jointly researched, the recovery rate of ilmenite from Panzhihua Iron and Steel Co., Ltd. due to the backwardness of the ore-mineral nature. Lower, a large amount of titanium resources are not recycled, resulting in the loss of resources. Therefore, Panzhihua Iron and Steel Co., Ltd. is combining years of production experience to optimize the titanium selection technology and equipment level of Panzhihua Titanium Resources. First, Panzhihua Titanium Resources Panzhihua-Xichang area is an ultra-large vanadium-titanium iron ore rock storage area consisting of several major mining areas such as Panzhihua, Hongge, Baima and Taihe. The scope of the ore body is large, and the type of ore is dense block and disseminated. The titanium minerals in the ore are mainly granular ilmenite, ilmenite and a small amount of flaky ilmenite. The mineral composition of the Panzhihua titanium ore and the chemical composition of the ilmenite are shown in Tables 1 and 2. Table 1 Analysis of mineral composition analysis of selected titanium ore ingredient TFe FeO Fe 2 O 3 TiO 2 V 2 O 5 Co content(%) 12.750 12.700 5.000 9.830 0.100 0.018 ingredient Cr2O3 Cu S P2O5 Sc AL2O3 content(%) 0.044 0.016 0.580 0.140 0.003 10.210 ingredient MgO SiO2 K2O Na2O Ni CaO content(%) 7.240 30.140 0.140 1.460 0.010 9.700 Table 2 Results of chemical composition analysis of ilmenite ingredient TFe FeO Fe 2 O 3 TiO 2 V 2 O 5 Co Ni content(%) 20.100 22.895 5.950 50.970 0.067 0.008 0.010 At present, the titanium recovered from the Panzhihua Mine is mainly granular ilmenite in the ore. The recovery rate is about 17.88%. The mineral composition of titanium ore is complex, the grade of TiO 2 is low, and the composition and content of ilmenite are relatively high. This brings certain difficulties to the efficient recovery of ilmenite. Therefore, the efficient recovery of Panzhihua ilmenite needs advanced Process technology and equipment level. Second, the existing titanium selection technology and equipment level (1) Titanium selection technology The selection of Titanium technology and equipment level of Panzhihua is represented by Panzhihua Iron and Steel Co., Ltd. Panzhihua Iron and Steel Titanium Plant is the largest specialized manufacturer in the world of titanium concentrate production. Put into operation in 1980, the first annual output of 50,000 t of titanium concentrate production lines, processing Panzhihua Iron and Steel Mining Company ore dressing plant part selected iron tailings. After continuous scientific research and technological innovation, by the selection of titanium plant in 2004, all the iron ore tailings produced by Panzhihua Iron Concentrator were selected as titanium ore. Now, coarse titanium with “re-election-electrical selection†as the main body has been formed. Iron ore recovery production line and fine ilmenite recovery production line with “strong magnetic-flotation†as the main body and a sulphur- cobalt concentrate recovery production line. At present, Panzhihua Iron and Steel Co., Ltd. has formed a real annual production capacity of 250,000 to 270,000 tons of titanium concentrate, becoming the largest original ilmenite ore dressing plant in China. (2) Choosing titanium equipment 1. Concentration, grading and degreasing equipment The development of titanium-concentrated dewatering equipment has undergone two stages of leaps. The first stage was the development of a new high-efficiency concentrated classifier and successfully replaced the four-chamber hydraulic classifier. The second stage is the development and application of the inclined plate concentration and classification box. 2, strong magnetic equipment Titanium process has used φ1500mm × 1000mm wet cage permanent magnetic machine, and Shp-2000 strong magnetic separator, there are magnetic ring Ganzhou Equipment Company Slon Vertical magnetic ring Titanium plant equipment used The pulsating high gradient magnetic machine and the SSS-I high gradient magnetic machine of Guangzhou Nonferrous Metal Research Institute. 3. Re-election equipment Cast iron spiral chute (FLX-φ600mm and φ1200mm spiral chute) and GL-2 spiral concentrator have been used. At present, Xichang Glass Steel's NL-600 spiral, LL 2 -1200 grooved spiral chute and Henan DL-2000 grooved spiral chute are used. 4, electric equipment The electric sorting machine used successively: YD-3A type, YD-3B type and YD31200-23 type manufactured by Changsha Research Institute of Mining and Metallurgy. It was also used after the modification of HIP (25) 231-200 manufactured by Carpco. 5, flotation equipment The flotation machines used successively mainly include: SF-4m 3 , SF-10m 3 , SF-1.2 m 3 and GF-4 m 3 . Third, Panzhihua Iron and Steel selection technology and equipment optimization research (1) The necessity of optimizing research The current recovery rate of Panzhihua Iron and Steel Co., Ltd. is only 17.88%, which indicates that there is still much room for improvement in the recovery rate of ilmenite. From the multi-year production practice of ilmenite recovery, the “re-election-electrical selection†process is difficult to obtain fundamental changes due to the poor adaptability of the principle process to the ore. The titanium resources in the iron ore tailings are difficult to be efficiently recovered. The “strong magnetic-flotation†process is a more advanced and reasonable beneficiation process for the recovery of titanium-coated ilmenite from the titanium plant. At the same time, the existing ore preparation work for the existing fine-grained titanium-selective titanium-filled titanium operation is insufficient, resulting in the operation of floating titanium. The original ore grade is low and the muddy phenomenon is serious, which results in the unsatisfactory running cost of the final selection index. (II) Optimization of titanium process In view of the existing problems in the existing titanium selection process and the viewpoint of comprehensive utilization of resources, the optimization process has optimized the existing production process of the titanium plant. The optimization process includes four processes: ilmenite recovery, secondary iron concentrate recovery, sulphur-cobalt recovery and flotation tailings recovery. The ilmenite recovery process is the main problem for the “strong magnetic-flotation†process for the original fine-grain recycling process: low flotation ore grade, high flotation reagent and power cost, too wide flotation particle size range and poor control . Therefore, the expansion project of the titanium plant is selected, and the coarse and fine ore concentrates are treated according to their respective characteristics: for the coarse fraction, according to the "strong magnetic tailing - coarse grain re-grinding - strong magnetic selection - flotation" The process is unfolded; for the fine-grained part, the process of “strong magnetic tailing-strong magnetic selection-flotation†is used to optimize and transform, and after the optimization and transformation is completed, two titanium-selecting systems of coarse and fine-grained grades are formed. The secondary iron concentrate recovery process is a centralized production process for the secondary iron concentrate produced in the process of selecting titanium to form a production line with an annual output of 200,000 tons of iron concentrate. The internal structure of the iron concentrate recovery process is: coarse grain classification (fine particles directly into the human classification) - grinding - one selection - secondary selection - sweeping, through this process to obtain the final iron concentrate, while the iron concentrate The tailings produced by the recovery are returned to the ilmenite recovery process. The sulphur-cobalt ore recovery process is a centralized recovery of the crude sulphur concentrate obtained from the sulphur-steam operation before the operation of the floating titanium. Although the existing sulphur-cobalt recovery process of the titanium plant is selected, due to the imperfect process structure, a large amount of sulphur-cobalt ore is In the tailings loss, the annual production of sulphur-cobalt concentrate is only 10,000 tons. After optimization, the annual output will double, reaching more than 20,000 tons. At the same time, the tailings produced by the recovery of sulphur-cobalt concentrates will be recovered from titanium ore. Flotation tailings recovery is carried out in accordance with the process of “strong magnetic tailing-classification-de-ironing-strong magnetic-grinding-flotation†for flotation tailings. (3) Improvement of the level of titanium technology 1. Strong magnetic preparation work is sufficient In view of the serious magnetic media blockage caused by the Shp, Slon and SSS-I magnetic machines used in the Panzhihua Titanium Plant, the selection index after the blockage is seriously deteriorated, so the materials before the strong magnetism are fully prepared, including the strong magnetic front. Recycling of coarse, de-iron and coarse ore grinding. In the process, a section of strong magnetic separation adopts a section of coarse separation and de-ironing, which can effectively remove the iron in the coarse slag and the original ore, which is beneficial to the maintenance of the equipment, and is more conducive to the continuity of the process, the stability of production, and the guarantee of the quality of the strong magnetic product. In the high-efficiency de-ironing, it can reduce the loss of titanium. 2. Fully prepared for strong magnetic cooling water In view of the problems arising from the production of strong magnetic coils and water-cooling in power distribution systems, the optimization of the cooling, filtration, softening, recycling and supplementation of the strong magnetic cooling water was fully prepared. 3. Increase the upper limit of flotation granularity and strictly control In the coarse flotation, the 0.154 mm particle size limit is used to float to the upper limit of the floating particle size. The flotation particle size limit of the ilmenite magnetite recovered ilmenite is expanded from the original -0.074mm to -0.154mm, and the recovered particle size of the vanadium-titanium magnetite is -0.154~+0.074mm. Magnetic de-ironing → a section of strong magnetic → grinding and sieving grading → two-stage strong magnetic → flotation process), the classification uses high-efficiency cyclone + Derrick sieve combination, mesh size 0.15mm + 0.18mm combination screen. 4, tailings concentration treatment technology The tailings concentration treatment has always been a thorny problem for many concentrating plants. If it is not handled properly, it will affect the production and environment, and then affect the overall situation. This optimization study specifically studies the tailings concentration treatment: the flotation tail The centralized treatment of the mine makes the flotation agent less contact with the tailings, ensuring that most of the minerals have normal sedimentation speed, and at the same time, the flocculant is automatically controlled in the tailings enrichment facility to increase the sedimentation speed and achieve the high concentration of tailings as much as possible. The transportation and circulating water are fully utilized. For flotation tailings containing chemicals, the pH is 5-6, and the flocculating agent for flotation tailings uses polyacrylamide and lime with a molecular weight of 5 million to 8 million. (4) Improvement of the level of titanium equipment selection 1, screening equipment (1) Thick equipment For the material partition, the titanium plant has been used: linear sieve, recoil cylinder sieve, Slon cylinder sieve, circular vibrating screen, all have problems such as screen blockage, material transportation difficulty, and poor working environment. This selected titanium expansion project has been researched and developed using the re-vibration screen developed and developed by Tangshan Lukai Technology Co., Ltd. The FM-VSk2020c3X screening system developed and developed by Tangshan Lukai Technology Co., Ltd. is a reshaping sieve that combines the linear vibration of the screen machine with the local electromagnetic vibration, and is combined with a new screening system composed of curved screens. The vibration principle uses an electromagnetic exciter to drive the vibrating system to excite the screen and is accompanied by linear vibration of the screen. The large-scale dehydration of the curved sieve and the composite vibration of the re-vibration screen can achieve the purpose of improving the screening efficiency, increasing the treatment amount, and reducing the moisture of the material on the sieve. The system has the characteristics of simple operation, stable performance, high efficiency, low power consumption, small dynamic load and self-cleaning screen. The screen uses a polyurethane screen. (2) fine screening equipment The iron-selective fine screen is developed by Tangshan Lukai Technology Co., Ltd., and the MVS series electromagnetic vibration high-frequency vibrating mesh screen laminated screen developed by MTS series is a newly developed product based on MVS ordinary series single-layer electromagnetic screen. It has multiple layers of independent. The screen boxes are installed on the same frame up and down, and each screen box works independently without affecting each other. This is equivalent to adding more processing area of ​​the screen to the original screen machine. The multi-layer screen box has the same structure and compact layout, which greatly reduces the footprint of the screen machine. The titanium fine screen is made of 5-layered Derrick screen. The Derrick screen has the characteristics of high screening efficiency, high opening ratio of the screen, long service life, low power consumption and simple operation and maintenance. Drake screen has the following characteristics: 1 The maximum five-way parallel connection can be realized, which expands the original multi-feed principle of Derrick fine screen; 2 linear vibration with the screen inclination angle of 15-25°, the flow area of ​​the screening material is extended, and the transmission speed is faster. , with greater screening capacity and screening efficiency; 3 configuration of Derek's unique wear-resistant anti-blocking polyester vinegar screen (fine 0.11mm), which can be tensioned, high opening ratio and long service life, Ensure the lowest screening cost; 4 Configure the re-slurry tank to maximize the screening of fine-grained materials from the feedstock. 2, concentration and classification equipment In view of the blockage problem caused by the use of the inclined narrow flow concentration classifier in the titanium plant, this expansion and transformation combined with the titanium plant actually uses the high-frequency vibration-deformation slanting plate dense grading equipment developed by Kunming University of Science and Technology. Main features of the equipment: 1The integrated mode of the grading and concentrating channel ensures the stability and identity of each channel operation. 2The swash plate group is modularized, and the combination and integration of multiple modules make the equipment large and easy to install and maintain. The 3 grading and concentration process is in the independent slanting plate. Completed in the channel to ensure high and stable grading and concentration efficiency of the equipment. 4 According to the nature of the slurry and the operation requirements, the deformation design of the swash plate channel is carried out to make the equipment perform optimally. 5 Antistatic, abrasion resistant, smooth and hydrophobic surface The special slanting plate processed by the polymer material, the surface of the plate is not bonded with the slime, and the 6 slanting plate group module intermittent high-frequency micro-vibration, the sloping plate surface is automatically cleaned, the sloping plate surface does not accumulate materials, the passage is not blocked The graded dense efficiency is greater than 70%, and the 7 underflow is controlled by a secondary valve. 3, strong magnetic equipment It adopts domestic advanced and mature Yanzhou Golden Ring Magnetic Separation Equipment Co., Ltd. and Guangzhou Nonferrous Metal Research Institute SLON and SSS-I two types of high gradient magnetic machine. SLON and SSS-I two types of high gradient magnetic machine have the characteristics of rotating ring vertical rotation, recoil concentrate, and pulsation mechanism. The utility model has the advantages of large enrichment ratio, high sorting efficiency, not easy to block, strong adaptability to raw ore, convenient operation and maintenance, and the like. According to the characteristics of Panzhihua vanadium-titanium magnetite, the magnetic medium is researched and developed, and the problems of power distribution, sealing, slag separation and wear resistance are specially manufactured. 4, flotation equipment The flotation equipment adopts a combined method of an inflatable flotation machine and a shallow trough flotation machine, that is, a flotation device. The coarse-grained flotation uses XCF type and KYF type flotation machine, and the fine-grained level flotation adopts GF type and JJF type flotation machine. At the same time, the protection and wear resistance of the flotation machine and the structure of the intermediate chamber were improved. Fourth, flotation reagent The fine-grained recovery of titanium plant has been successively tested and used: MOs and MOH-1 of Shishou Jingjiang Pharmacy Concentrator in Hubei; ROB of Changsha Research Institute of Mining and Metallurgy, emulsified Tar Oil and HO of Guangzhou Nonferrous Metal Researcher; Chinese Academy of Geological Sciences Oxidized paraffin soap, F968 and EM351 of the Institute of Mineral Resources Comprehensive Utilization; SA of Sichuan Guosheng Chemical, XT of Pangang Steel Company, R-1 and R-2 of Mine Design Institute of Pangang Mining Company; Hunan Peach Mine Chemical TK. The MOH of the Shishou Jingjiang Pharmacy Concentrator in Hubei Province is now in use. MOH-2 of Hubei Shishoujingjiang Chemical Concentrator has been tested and used for coarse-grained titanium ore flotation. It is planned to test the UT of Chengdu Suyan Technology Development Co., Ltd. From the results of the continuous test of MOH-2 industry in Table 3, the average indexes obtained by continuous test of MOH-2 are: original ore grade 21.77%, concentrate grade 47.11%, concentrate yield 35.79%, flotation recovery rate 77.45%, tail The grade of minerals is 7.69%. It can be seen from Table 4 that the index during the continuous test of MOH-2 agent is obviously better than the production index of MOH-1. Under the premise that the concentrate grade is qualified, the recovery rate of concentrate during the test period is increased by about 15%. In 2008, the cost of pharmaceuticals was 71.07 yuan / t · concentrate, the cost of chemicals during the MOH-2 test was 56.70 yuan / t · concentrate, compared to the cost of chemicals decreased by 14.37 yuan / t · concentrate, of which titanium collector costs Reduce 10. O1 yuan / t · concentrate. Table 3 MOH-2 industrial continuous test results Date (month and day) Raw ore Concentrate /% Tailings Rough selection of dosage (kg/t, raw ore) Raw ore amount t/h Raw ore concentration (%) TiO 2 % TiO 2 Yield Recovery rate TiO 2 % MOH-2 sulfuric acid Diesel 4.7 22.31 49.96 30.88 69.14 9.96 1.37 0.43 0.10 12.37 42.17 21.66 49.67 33.18 76.09 7.75 1.60 1.30 0.10 12.93 42.17 21.11 47.43 28.40 63.81 10.67 1.39 0.29 0.20 17.57 42.17 20.31 47.43 34.79 81.25 5.84 1.46 0.27 0.21 18.09 45.83 20.71 46.01 37.97 84.37 5.22 1.70 0.26 0.21 15.97 45.83 4.8 22.33 46.05 40.89 84.33 5.92 1.45 0.26 0.11 18.24 53.13 21.78 46.45 36.53 77.91 7.58 1.40 0.26 0.11 18.24 53.13 22.33 46.78 39.03 81.76 6.68 1.68 0.34 0.13 15.71 53.13 21.68 45.97 41.32 87.62 8.80 1.66 0.31 0.12 17.33 51.11 20.78 43.76 36.48 76.82 7.58 1.66 0.31 0.35 17.33 51.11 4.9 23.02 47.02 43.29 88.42 4.70 1.84 0.30 0.20 13.58 50.05 22.15 47.08 36.76 78.13 7.66 1.50 0.33 0.20 13.82 47.80 22.33 48.25 31.16 67.32 10.60 1.35 0.35 0.15 16.30 49.61 23.72 47.76 32.66 65.76 12.06 1.13 0.35 0.14 17.42 52.99 20.38 46.98 37.65 86.78 4.32 1.85 0.25 0.27 12.62 52.99 average 21.77 47.11 35.79 77.45 7.69 1.54 0.31 0.17 15.83 48.88 Table 4 Statistics of MOH-1 coarse-grained flotation production indicators from January to April 2009/% month Raw ore taste Concentrate grade Tailings taste Recovery rate 1 17.63 47.08 8.42 63.61 2 17.69 47.11 8.65 62.64 3 17.35 46.57 8.68 61.42 4 19.05 47.74 9.63 61.94 average 17.96 47.13 8.85 62.45 After the optimization is completed, the Panzhihua coarse and fine-grained ilmenite recovery process structure is more complete. The technology is more mature, the equipment is more advanced, and the annual output of titanium concentrate will increase from 280,000 tons to 479,000 tons, and the recovery rate will be increased from 17.88% to 37.22%. 20,000 t / a, iron concentrate 200,000 t / a, to achieve efficient recycling of Panzhihua ilmenite, the main indicators are shown in Table 5. Table 5 Main technical and economic indicators of titanium optimization research Serial number project name unit index Remarks Before optimization Optimized Increment 1 Product output Ten thousand t/a Raw ore 620.00 620.00 0 Titanium concentrate 28.00 47.90 +19.90 Of which: coarse grain titanium concentrate 12 33 +21 Fine grain titanium concentrate 16 14.9 -1.1 Sulphur-cobalt concentrate 1.00 2.00 1.00 Iron concentrate / 20.11 20.11 2 Mineral processing index Raw ore grade (TiO 2 ) % 9.85 9.85 / Titanium concentrate grade (TiO 2 ) % 47.50 47.50 / Sulfur cobalt concentrate S grade % 30.00 30.00 / Iron concentrate grade (TFe) % / 52.50 / Titanium concentrate yield % 4.52 7.73 +3.21 Titanium concentrate (TiO 2 ) recovery % 21.78 37.26 +15.48 Tailings (TiO 2 ) grade % 8.07 6.70 -1.37 Iron concentrate yield % / 3.24 / V. Conclusion (1) After years of research, Panzhihua ilmenite ore selection technology has made great progress, equipment level has been improved, many technical problems of ilmenite recovery have been solved, and the comprehensive recycling rate of Panzhihua titanium resources has been improved and promoted. The development of Panzhihua Titanium Industry. (2) Through the optimization research of Panzhihua ilmenite ore selection technology and equipment level, the process of Panzhihua ilmenite recovery is more complete, the technology is more advanced, the equipment level is higher, and the recovery rate of ilmenite is greatly improved. The annual output of titanium concentrate from the titanium plant will reach nearly 500,000 tons. (3) The “high-frequency vibration-deformation slanting plate dense grading equipment†for the research and development of tailings settlement has the characteristics of novel structure and high-frequency micro-vibration, which can further improve the concentration and classification efficiency. The study of tailings treatment technology not only effectively treats tailings, but also greatly improves the quality of the water, promotes production, reduces costs and protects the environment. Dtf Printer,Dtf Printer Price,Dtf Printer For Beginners,Dtf Printer For Sale Onetex , https://www.onetexprinting.com