Abstract: The data and achievements of titanium dioxide industry in China in 2019 and 2020 were reviewed and summarized. The current situations and development prospects were also analyzed. It is suggested that a high quality development will be the mainstream of the titanium dioxide industry in future. Altho...
Abstract: In order to improve the comprehensive utilization efficiency of sea sand vanadium titanomagnetite and reduce the treatment energy consumption, an activated reduction treatment method based on the rotary hearth furnace (RF) reduction-electric furnace (EAF) smelting separation process was put forward....
Abstract: The waste catalyst from acid production from heavy metal smelting flue gas has relatively complex impurity compositions. In order to obtain the optimum conditions for comprehensive recovery of vanadium, potassium and zinc from the waste catalyst, a direct leaching process was proposed and the factor...
Abstract: Vanadium dioxide (VO2) has the semiconductor-metal phase transition characteristics. It has the mutation property of infrared light transmittance/reflectivity at 68 ℃. Using tungsten, fluorine and other elements for single element or multi-element doping can effectively reduce the phase transition t...
Abstract: In this paper, the preparation of V2O3 by hydrogen reduction was systematically studied. The stable state of vanadium under different conditions was determined by thermodynamic analysis of vanadium redox reactions in V-H-O system. The influence of reaction temperature and time on deoxidation was ana...
Abstract: Based on the experiments of extracting vanadium from acid leaching solution of clay vanadium ore with N235, the factors influencing the extraction rate were studied. The influences of pH value, extractant concentration and phase ratio on the extraction rate were determined. The interaction effect du...
Abstract: Taking 3608 data of a titanium dioxide production line by sulfuric acid process as samples, the correlation between the five attribute variables of the industrial titanium sulfate solution and the particle size of metatitanic acid D50 was investigated by Pearson coefficient and statistical p value, ...
Abstract: Electron beam selective melting was used to print in different forming directions. Scanning electron microscope (SEM) and metallographic microscope (OM) were used to study the microstructure characteristics of Ti-6Al-4V alloy formed by electron beam selective melting. The mechanical properties of Ti...
Abstract: To control the heating process of industrial pure titanium slab (TA1) automatically, the parameters such as density, specific heat capacity, thermal diffusivity and thermal conductivity in the range of 21.6～975 ℃ were measured or calculated. The variation trends of the parameters were analyzed, and ...
Abstract: In order to solve the poor permeability and fluidity of traditional powder titanium-lithium ion sieve, fibrous precursor of titanium-lithium ion sieve (Li2TiO3) was prepared via the solid-state reaction with skin collagen as the template, Ti(SO4)2 and lithium acetate as the titanium and lithium sour...
Abstract: In this paper, the corrosion resistance and wear resistance of Q235NH building steel specimens with different Ti content were studied. The results show that with the increase of titanium content, the corrosion potential of the sample first moves forward and then moves negative, and the wear volume f...
Abstract: Using sodium metaaluminate, aluminum sulfate and phosphoric acid as raw materials, different aluminum films were prepared at various pH values. Crystal structure, thermal stability, microstructure and physical properties of the films were analyzed by XRD, infrared spectroscopy, thermogravimetry, SEM...
Abstract: In this paper, the samples of HRB335 screw steel containing vanadium were prepared, and the microstructure, mechanical properties and wear resistance of the samples were tested, compared and discussed. The results show that with the increase of vanadium content, the mechanical properties and wear re...
Abstract: The recovery of ilmenite from vanadium titanomagnetite in Panxi area generally adopts “high-intensity magnetic flotation” as the principle process. This process technology is relatively mature and has certain adaptability, but the −38 μm fine ilmenite has not been effectively recovered, and a large ...
Abstract: According to the size characteristic of a coarse ilmenite in Panxi region, the process of gravity-electrostatic separation in different TiO2 grades was carried out, and the production index and cost-effectiveness in different feeding ore were compared. The results show that the process of gravity-el...
Abstract: Based on multi-element analysis and targeted mineral composition of the vanadium-titanium magnetite in Panxi area, the titanium concentrate separation including magnetic separation, gravity separation, electric separation, and flotation process had been carried out upon the iron tailings, in order t...
Abstract: The recovery efficiency of fine-grained olivine pyroxene ilmenite from a concentration plant in Panxi area is low, which brings about high cost of flotation reagents and low annual output of titanium concentrate. To solve these problems, a kind of gravity concentration process, i.e., the new type “s...
Abstract: A vanadium-bearing titanomagnetite dressing tailing in Panxi region contents of 8.25% TiO2. In the ore, the main valuable mineral was ilmenite, and the main gangue minerals were augite and hornblende, and the gangue minerals are of stronger magnetism. Both the particle size and disseminated grain si...
Abstract: The titanium recovery process of an investigated plant is high-intensity magnetic gravity separation (spiral). Due to the limitation of the spiral concentrator on the particle size of ilmenite, the recovery of coarse ilmenite is better, and the recovery of fine ilmenite and ilmenite intergrowth is p...
Abstract: For a severely weathered and oxidized V-Ti iron ore from abroad, Fe minerals and Ti minerals are disseminated closely to each other thus it is difficult to separate by physical beneficiation. Based on the specific magnetization coefficient and specific gravity, gangue minerals are quite different fr...
Abstract: Pangang Xingmao Company scavenges ilmenite from the discharging tails of Pangang Midi ilmenite concentrator. The flowsheet consists of two stages of high-intensity magnetic separation and flotation concentration. In order to solve the problem of lower TiO2 recovery in the second stage of high-intens...
Abstract: The electromagnetic vibration field was introduced into the injection process of metal powder injection molding (MIM). The density and mechanical properties of the green body and sintered samples were systematically evaluated. Meanwhile, the microstructure of the green body and sintered samples was ...
Abstract: Based on the low-temperature direct reduction process, the magnetic field enhanced reduction experiment of Bayan Obo carbon bearing pellets was carried out at 1 223 K, B = 1.02 T. The effect of magnetic field on iron oxide reduction and rare earth phase transformation of Bayan Obo ore was studied by...
Abstract: A prediction model for phosphorus distribution ratio of the CaO-SiO2-FeO-Al2O3-Na2O-TiO2-P2O5 slag system was established based on the ion and molecule coexistence theory(IMCT). The influence of component changes on the phosphorus distribution ratio and the contributions of basic components to the p...
Abstract: The technical issues such as machinability, hardness uniformity and longer annealing time present for a wrought and hot-rolled special steels (e.g. CTHQ25, 1Cr11Ni2W2MoV, 30CrNi4Mo) manufactured by Pangang Jiangyou Changcheng Special Steel Co., Ltd. In order to address those issues, a a hot-rolled C...
Abstract: The single-pass isothermal compression tests on a Gleeble−3500D simulated machine was carried out in this work to study the dynamic recrystallization behavior of GH4169 alloy in the temperature ranging from 900 ℃ to 1150 ℃ and strain rate ranging from 0.01 s−1 to 10 s−1 and the deformation degree ra...
Abstract: A new spring steel 55SiCrV smelted in the laboratory was used as the raw material i n this paper to investigate the effects of rolling deformation temperature and cooling speed on the mechanical properties and microstructure of 55SiCrV by means of CCT curve drawing, thermal simulation test and meta...
Abstract: In this paper, the corrosion resistance mechanism and corrosion fatigue performance of R4s (22MnCrNiMo) grade steel were studied by means of seawater coupon test and corrosion fatigue test. The choice of corrosion time was 30 d, 60 d and 90 d, respectively. The experimental results show that in the ...
Abstract: In order to explore the influence of Mg treatment on inclusions in free-cutting steel, 1144 high-sulfur free-cutting steel was used as experimental steel, and the influence of Mg composite treatment on the shape, size distribution and inclusion composition of free-cutting steel 1144 was studied by m...
Abstract: In view of the phenomenon of black lines existing on the several batches of HRB400E hot-rolled ribbed bar with a diameter of 28 mm, the samples had been checked and analyzed by optical microscope, scanning electron microscope and energy dispersive spectrometer. The results show that the main reason ...
