The effect of diboron trioxide (B2O3) on the crushing strength and smelting mechanism of high-chromium vanadium–titanium magnetite pellets was investigated in this work. The main characterization methods were X-ray fluorescence, inductively coupled plasma–atomic emission spectroscopy, mercury injection porosimetry, X-ray diffraction, metallographic microscopy, and scanning electron microscopy–energy-dispersive X-ray spectroscopy. The results showed that the crushing strength increased greatly with increasing B2O3 content and that the increase in crushing strength was strongly correlated with a decrease in porosity, the formation of liquid phases, and the growth and recrystallization consolidation of hematite crystalline grains. The smelting properties were measured under simulated blast furnace conditions; the results showed that the smelting properties within a certain B2O3 content range were improved and optimized except in the softening stage. The valuable element B was easily transformed to the slag, and this phenomenon became increasingly evident with increasing B2O3 content. The formation of Ti(C,N) was mostly avoided, and the slag and melted iron were separated well during smelting with the addition of B2O3. The size increase of the melted iron was consistent with the gradual optimization of the dripping characteristics with increasing B2O3 content.

•A novel green fabrication of UV curable EA-SiO2 hybrid coatings was presented.•KH-570 is a candidate to modify the silica colloid to obtain a homogeneous hybrid coating.•The effects of silica on the thermal stability were investigated.Ultraviolet (UV) curable organic-inorganic hybrid materials have attracted increasing researchers' attention due to the environmental advantages and extensive application potential. In this work, a novel green fabrication of UV curable epoxy acrylate (EA)-silica hybrid coating via a sol-gel process induced by photochemical reaction was presented. The inorganic phase, silica was formed at present of an iodonium salt and tetraethyl orthosilicate, avoiding the application of acid or base in traditional synthesis method. The hybrid coatings were characterized by Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM) and thermogravimetric analysis(TGA). Three kinds of silane coupling agents including KH-550, KH-560 and KH-570 were investigated to modify the silica sol. The distribution of SiO2 in the hybrid coating with KH-570 modification is most homogeneous. TGA results indicate that the hybrid coating with 10% of silica exhibits the most excellent thermal stability. The effects of adding content of silica on the hybrid film's tack free time and hardness were also investigated for the preliminary study.Download high-res image (124KB)Download full-size image

A novel Ce(IV) ion-selective polyvinyl chloride (PVC) membrane electrode based on HDEHP and HEH/EHP as ionophore was successfully prepared. The factors affecting the response of Ce(IV) ion were investigated, such as membrane composition, internal solution, concentration of SO42−, and acidity in test solution. The best performance was obtained using the membrane with PVC:DBP:HDEHP:HEH/EHP:OA mass ratio of 75:175:5:5:5. The proposed electrode exhibited a Nernstian slope of 30.44 mV/decade for Ce(IV) ion over a linear concentration range of 1×10−5–1×10−1 mol/L with the detection limit of 9.0×10−6 mol/L. The electrode showed stable response within the SO42– concentration range of 0.1–1 mol/L and the acidity range of 0.25–1.2 mol/L H+. The proposed electrode showed high selectivity for Ce(IV) over a wide variety of interfering ions and a fast response time. It was used as an indicator in the potentiometric titration of Ce(IV) solution with H2O2 solution, and could also be used for the determination of Ce(IV) in real Ce(IV)-containing aqueous samples.Linear potential response of proposed novel Ce(IV) ion-selective polyvinyl chloride membrane electrodeDownload high-res image (40KB)Download full-size image

The synthesis of tungsten tetraboride (WB4) powders prepared by reactive hot-pressing in a vacuum from elemental tungsten (W) and amorphous boron (B) powders is reported in this work. This study systematically investigates the effects of the synthesizing temperature, B/W molar ratio, pressure and time on phase formation. The XRD pattern for the as-synthesized powders was analysed. Metastable tungsten tetraboride was synthesized in a vacuum at 1350 °C with a B/W molar ratio of 8.0 under a low uniaxial pressure (30 MPa) for 1 h. The scanning electron microscopy and transmission electron microscopy results showed that the particles had a tendency to form agglomerates. Amorphous boron was found to exist in the final product, and formation of the crystal phase WB4 was confirmed.

Epoxy acrylate (EA) coatings modified with organically modified rectorite (OREC) were synthesized employing the ultraviolet-curing technique. Two kinds of alkyl ammonium ions, octadecyltrimethylammonium chloride (OTAC) and [2-(methacryloyloxy)ethyl]trimethylammonium chloride (MAOTMA), were used to modify rectorite (REC). The methacrylate functionalities of MAOTMA were capable of reacting with the acrylate groups of EA. The structure of OREC was characterized by FTIR and XRD and the results indicated that the surfactants were successfully intercalated into the REC interlayers via cation exchange process. The morphology of nanocomposites was investigated by SEM and TEM. OREC showed better dispersion in EA matrix compared with unmodified REC. The Tg of neat EA obtained by DMA was 75.6°C, while for 5 wt% EA/MAOTMA-REC and EA/OTAC-REC nanocomposites it increased to 76.5 and 80.8°C, respectively. The nanocomposite with 3 wt% loading of OTAC-REC had the highest Tg (89.7°C). TGA revealed that the thermal stability of nanocomposites was enhanced by OTAC-REC and MAOTMA-REC and the thermal stability of EA/MAOTMA-REC nanocomposites was better than that of EA/OTAC-REC nanocomposites. The mechanical properties of nanocomposites containing OTAC-REC and MAOTMA-REC were better than those of nanocomposites containing unmodified REC. With increasing OREC content, the adhesive force of nanocomposites decreased slightly and the flexibility increased significantly.

•Highly cost-effective shielding composite is made from vanadium slag and boron-rich slag.•The HVL of composites are about 3.90 cm at 1173 keV and 4.15 cm at 1332 keV.•The HVL of all shielding composites are better than our past researches.•Maximum resistance temperature of composites is about 230 °C.•Composites have good resistance for gamma ray irradiation damage under 93.5KGy dose.Highly cost-effective shielding composite was prepared by vanadium slag, boron-rich slag and epoxy resin in this paper. WinXCOM program and 60Co gamma ray source were used to analyze the gamma ray shielding properties. Gamma ray irradiation for composite was tested with 60Co gamma ray irradiation field. Simultaneous DSC-TGA, electronic universal testing machine and scanning electron microscopy were used to analyze the material properties of composite. The HVL of all composites are nearly same for 60Co gamma ray, about 3.90 cm at 1173 keV and 4.15 cm at 1332 keV. Maximum resistance temperature of composites is about 230 °C. Bending strength of all composites is nearly same and more than 10 MPa. Composites have good resistance for gamma ray irradiation effect under 93.5 kGy dose gamma ray.

•Differences between the microwave and conventional roasting were investigated.•Microwave blank roasting makes surface of roasted particles become more porous.•Mechanisms of the microwave and conventional blank roasting were analyzed.•A new approach has been proposed to treat vanadium slag with high chromium.The effects of microwave blank roasting (MBR) and conventional blank roasting (CBR) on oxidation behavior,microstructure and surface morphology of vanadium slag with high chromium content (VSHCC) containing 12.54 wt% Cr2O3 were investigated. The oxidation behavior, microstructure and surface morphology of samples before and after MBR and CBR were characterized using X-ray diffraction (XRD), fourier transform infrared spectroscopy (FT-IR), simultaneous thermal gravimetric and differential scanning calorimetry (TG-DSC) and scanning electron microscope (SEM), respectively. The MBR experiments were performed in a microwave roasting instrument at temperature ranging from 400 °C to 900 °C and the CBR experiments were performed in muffle furnace at temperature ranging from 600 °C to 900 °C. The results show that the normal spinel begins to be oxidized to inverse spinel at a lower temperature and to decompose at 600 °C. The completely decomposition temperatures of the normal spinel using MBR and CBR are 700 °C and 800 °C, respectively. The formation temperatures of Fe2TiO5 using MBR and CBR are 600 °C and 900 °C, respectively, and the content of Fe2TiO5 and (Fe0.6,Cr0.4)2O3 gradually increase as MBR temperature (from 600 °C to 900 °C) increases. After roasted at a high temperature, the majority of Cr3+ ions in the spinel phase are conjugated to iron ions to form hematite-type (Fe0.6,Cr0.4)2O3 solid solutions and the minority of Cr3+ ions in the spinel phase are incorporated into VO2 to form the Cr0.07V1.93O4 or CrVO4. The completely decomposition temperature of the olivine revealed by FT-IR analysis is higher than that concluded from the XRD analysis. The reason is that the minimum detection level of FT-IR analysis is more sensitive than the XRD analysis. Compared with the CBR, the MBR can accelerate the oxidative decomposition of the spinel and olivine phase in the raw slag and also can lower the formation temperature of Fe2TiO5. Besides, it also can reduce the granularity of roasted particles and make the surface become more porous especially at a high roasting temperature. The reason for this phenomenon can be due to the different of heat generation and heat transferring mechanisms in MBR and CBR. Based on the results, a new approach has been proposed to extract vanadium from VSHCC. At last, kinetic analysis indicates that the oxidative decomposition of vanadium chromium spinel phase is controlled by the rate of 0.43 reaction order and the corresponding total apparent activation energy and the frequency factor are 112.57 kJ mol−1 and 1.86 × 104 min−1, respectively.

•We investigated the potential of Fe2SiS4 as heterogeneous Fenton reagent.•The unsaturated iron atoms of the Fe2SiS4 result in the Fenton effect.Sunlight irradiation can promote the Fenton effect of Fe2SiS4.The heterogeneous Fenton system has become the hotspot in the decontamination field due to the effective Fenton activity with a wide pH range compared with the homogeneous Fenton system. The unstable chemical properties of pyrite leaded to the flourishing investigation of the candidates for the heterogeneous Fenton catalysts. In this article, Fe2SiS4 nanoparticles with better thermodynamic stability were prepared, and its potential as Fenton reagent was investigated. It was found that the polar surface consisted by the unsaturated iron atoms in the Fe2SiS4 crystalline configuration resulting in the realization of Fenton reaction. Meanwhile, sunlight irradiation could promote the reduction of ferric ions and further enhance the Fenton effect.

Titanium-based nanomaterials have been widely used as dental implants because of their beneficial antiseptic and nano-interfacial effects. In particular, their application as surface decontamination biocompatible materials attracts increasing attention. In this study, a TiO2 nanotube-based antibacterial system has been fabricated by an anodic oxidation method, and its morphology, crystalline phase and hydrophilic property have been characterized. The effects of TiO2 nanotubes on bacterial growth inhibition, as well as bacterial cell fate, were also investigated. The results indicated that mixed-phase TiO2 nanotubes show excellent antibacterial performance under ultraviolet light irradiation, and their antibacterial ability could be attributed to the oxidative stress induced by the TiO2 nanotubes. The antibacterial performance of the TiO2 nanotube coating can be manipulated by photocatalytic activity as well as geometrical characteristics. Our study is the first to reveal the interactions of TiO2 surface that may increase the potential survival chances of Porphyromonas gingivalis when exposed to an antibacterial drug.

In order to provide a potential method for extracting Ce(IV), the extraction of Ce(IV) from sulphuric acid solution by an emulsion liquid membrane using D2EHPA as a carrier was investigated. The ELM system consisted of sulfonated kerosene as diluent, Span 80 as surfactant, liquid paraffin as intensifier and hydrochloric acid containing hydrogen peroxide as the inner aqueous solution. The influences of various parameters on the extraction of Ce(IV) were investigated. The optimum conditions for Ce(IV) extraction can be summarized as follows: D2EHPA concentration, 12% (v/v); Span 80 concentration, 2–3% (v/v); liquid paraffin concentration, 2–4% (v/v); hydrochloric acid concentration in the internal phase, 4–5 mol l−1; hydrogen peroxide concentration, 0.02 mol l−1; volume ratio of membrane phase to internal phase (Roi), 1.5; external phase acidity, 0.4–0.5 mol l−1; volume ratio of external phase to membrane phase (Rwe), 2; extraction time, 15 min; and stirring speed, 250 rpm. Experiments in which Ce(IV) was separated from RE(III) were then carried out under the optimum conditions, and the results indicated that the system is extremely selective for Ce(IV). The mechanism of Ce(IV) extraction has also been discussed. The loss for the experimental process was within 3%. The results reveal that the ELM method is a clean and cost-effective process for the extraction of Ce(IV) from sulphuric acid solution.

•The M-POSS nanocages have chemically incorporated into the hybrid materials.•The addition of POSS enhanced both of the UV-curing rates and final double bond conversion.•The nanocomposite's Tg increased with the increasing M-POSS loadings.•The thermal stability and impact resistance of nanocomposites were enhanced by the addition of M-POSS.In this work, the morphology and properties of UV-curing epoxy acrylate (EA) coatings modified with methacryl polyhedral oligomeric silsesquioxanes (M-POSS) were studied. The M-POSS nanocages were introduced into EA UV-curing system via copolymerization at loadings between 0% and 10 wt%. The XRD and FTIR analysis indicated that M-POSS chemically incorporated into the hybrid materials and formed a cross-linked network between M-POSS and EA. The morphological analysis showed that the discrete spherical POSS-rich particles were dispersed in the EA matrix uniformly, and both of the number and mean diameter of POSS-rich particles increased with the increasing M-POSS loadings. The influence of M-POSS on the kinetics of the photopolymerization was determined by real time FTIR spectroscopy and the result showed that the addition of POSS enhanced both of the UV-curing rates and final double bond conversion. The DMA analysis showed that increasing the amount of M-POSS nanocages caused an increase on the nanocomposite's Tg. TGA curves showed that at the later period of degradation process, the thermal stability of nanocomposites was enhanced by M-POSS. With respect to the mechanical properties, the most remarkable trend was an improvement on the impact resistance of nanocomposites with the increasing POSS contents. Because both of the craze and plasticity deformation caused by POSS nanocages would absorb impact energy, hinder the growth of craze.

•UV curable EA-Si hybrid coatings were prepared by a simple approach combining of radical and cationic photopolymerization.•Cross-linked network structure of SiOSi formed in the hybrid coatings.•The thermal stability and transparency of EA-Si hybrid coatings were enhanced.A series of UV curable EA-Si hybrid coatings were prepared by a simple approach combining radical and cationic photopolymerization, with epoxy acrylate (EA) as monomer, γ-glycidoxypropyltrimethoxysilane (GPTMS) as inorganic precursor, benzophenone (BP) as free radical photo initiator and a diaryliodonium salt DPIHFP as cationic photo initiator. The chemical structures of EA-Si hybrid coatings were characterized by Fourier transform infrared (FTIR), Raman spectroscopy and X-ray diffraction (XRD). The thermal and optical properties of hybrid coatings were investigated by thermal gravimetric analysis (TGA) and UV–vis transmission spectroscopy, respectively. The results indicated that cross-linked network structure of SiOSi formed in the hybrid coatings, which led to the decrease in crystallinity and of EA-Si hybrid coating. The final conversion of CC bonds was also decreased because of the addition of GPTMS. The thermal stability of EA-Si hybrid coatings was enhanced in the second decomposition stage (300–400 °C) because of the existence of organic–inorganic cross-linked network structures. The transparency of coatings at around 346 nm tended to increase with increasing concentration of inorganic precursor GPTMS.

•We utilized Fe3O4 nanotube array as the precursor to fabricate the FeS2 nanotube array, and the special topography has the advantage on the complete sulfuration.•It is found that the morphology effect of FeS2 nanotube coating could increase the optical absorption area and enhance the scattering of incident light, which ultimately increased the optical absorption.Pyrite (FeS2) has been widely used in the photovoltaic field due to its various advantages. In this study, FeS2 nanotube arrays were successfully synthesized by sulfuration of the precursor Fe2O3 nanotube arrays. The microstructure, crystalline phase and optical characteristics of FeS2 nanotube arrays were investigated. It was found that the precursor with tubular nano-topography could effectively accelerate the diffusion rate of sulfur atoms and make the sulfuration more complete. The structure of FeS2 nanotube could enlarge the optical absorption area and enhance the scattering of incident light which would extend the travel path of photon in the nanotube coating and ultimately promoted the optical absorption. The bandgap of FeS2 nanotube arrays was 1.24 eV.

To achieve high efficiency utilization of high-chromium vanadium–titanium magnetite (V–Ti–Cr) fines, an investigation of V–Ti–Cr fines was conducted using a sinter pot. The chemical composition, particle parameters, and granulation of V–Ti–Cr mixtures were analyzed, and the effects of sintering parameters on the sintering behaviors were investigated. The results indicated that the optimum quicklime dosage, mixture moisture, wetting time, and granulation time for V–Ti–Cr fines are 5wt%, 7.5wt%, 10 min, and 5–8 min, respectively. Meanwhile, the vertical sintering speed, yield, tumbler strength, and productivity gains were shown to be 21.28 mm/min, 60.50wt%, 58.26wt%, and 1.36 t·m−2·h−1, respectively. Furthermore, the consolidation mechanism of V–Ti–Cr fines was clarified, revealing that the consolidation of a V–Ti–Cr sinter requires an approximately 14vol% calcium ferrite liquid-state, an approximately 15vol% silicate liquid-state, a solid-state reaction, and the recrystallization of magnetite. Compared to an ordinary sinter, calcium ferrite content in a V–Ti–Cr sinter is lower, while the perovskite content is higher, possibly resulting in unsatisfactory sinter outcomes.

The dynamic recrystallization behavior of low-carbon steel containing three different amounts of boron (0.002, 0.004, and 0.006 wt%) was systematically investigated under various experimental conditions. Low-carbon steel was exposed to temperatures ranging from 900 to 1100 °C, strain rates from 0.1 to 10 s−1, and inspection of the initial austenite grain size at 1150 °C. The resulting stress–strain curves are observed to possess two classifications of behavior, dynamic recovery and dynamic recrystallization, while the initial austenite grain size increases directly proportional to boron concentration. Additionally, the characteristic points of the flow curves were analyzed by regression method in which the peak and critical stresses decreased in response to an increase in boron composition, indicating that a softening effect appears with the addition of boron. On the contrary, peak and critical strains increased as boron content increased, indicating that boron has the ability to delay the onset of dynamic recrystallization. Lastly, the kinetics model of dynamic recrystallization for three boron-treated steels was established.

In this study, epoxy acrylate (EA)/vinyl-polyhedral oligomeric silsesquioxane (POSS) nanocomposites were prepared through in situ polymerization and by UV-curing technique. The vinyl-POSS monomers were added to EA matrix by physically blending at loadings between 0 wt.% and 15 wt.%. The microstructure of the EA/vinyl-POSS composites was studied by X-ray diffraction (XRD) measurements, and the result indicated that the separate POSS domains were present in EA/POSS composites. Aggregates were observed in the nanocomposites by SEM and the EDS results indicated that there were vinyl-POSS molecules existing in the EA matrix. TEM images further proved there were both POSS aggregates and monomers dispersed in the EA matrix. The kinetics of the photopolymerization was investigated by real time FTIR spectroscopy. The DSC analysis showed that the increasing POSS content caused a decrease on the composite's glass transition temperature. TGA measures confirmed that the degradation mechanism of EA was not affected by POSS and the nanocomposites thermal stability was slightly improved with the increasing of POSS loadings. It can be seen that the degradation rate slowed down with the increasing of POSS content and the 50% mass loss temperature of EA/POSS hybrids all increased conspicuously relative to plain EA.Highlights► EA/vinyl-POSS nanocomposites were prepared through UV-curing technology. ► POSS nanoparticles were dispersed by form of aggregates and monomers in the EA matrix. ► The addition of POSS improved UV-curing rates and double bond conversion at the initial stage of UV-curing process. ► Thermal stability were improved by the addition of vinyl-POSS nanoparticles.

•Fluoride ion residues on the nanotube surface can be decreased by soaking in the deionized water.•Shockley–Read–Hall or surface was caused by Ti–F bond.•The fluoride ions of TNTs can accelerate the recombination of photoinduced electron–hole pairs.Titania nanotube arrays (TNTs) were fabricated via two-step anodization of titanium in an ethanediol electrolyte containing 0.5 wt% hydrofluoric acid (HF) and then characterized by SEM, XPS and UV–vis spectrometry. In order to investigate the photoelectric conversion efficiencies of TNTs, the nanotube with different amounts of fluoride ion residues on the surface were served as a model photoelectrode. The degradation efficiency of methylene blue attains 65% when the percentage of fluoride ion residues in the TNTs falls from 4.38% to 2.46% after 150 min. In addition, the open circuit voltage of the sample that was immersed in deionized water seven days is approximately 0.6 eV (vs. SCE), which is almost 1.5 times as high as the value of untreated sample. These results reveal that a decrease in fluoride ion residues that is on nanotube surface could increase the photoelectric conversion efficiency mainly because the fluoride ions can enhance the recombination efficiency of photoinduced electron–hole pairs.

Uniform hydroxyapatite (HA) coatings were deposited electrochemically on titanium in magnetic fields. The structure and morphology of the deposited films were investigated by scanning electron microscopy, X-ray diffraction and transmission electron microscopy (SEM, XRD and TEM). It was found that the morphology of HA deposits could be altered by direction and intensity of applied magnetic field. Needle-like crystals formed when magnetic field was applied perpendicularly to electric field (B⊥ J), whereas spherical nanocrystals formed when magnetic and electric fields were in parallel (B||J). In addition, the nucleation rate of the HA crystals was proportional to the magnetic field intensity. Therefore, the resultant crystal size decreased with increasing magnetic field intensity.

•UV curable EA-Si hybrid coatings were prepared by a simple approach combining of radical and cationic photopolymerization.•Cross-linked network structure of SiOSi formed in the hybrid coatings.•The thermal stability and transparency of EA-Si hybrid coatings were enhanced.A series of UV curable EA-Si hybrid coatings were prepared by a simple approach combining radical and cationic photopolymerization, with epoxy acrylate (EA) as monomer, γ-glycidoxypropyltrimethoxysilane (GPTMS) as inorganic precursor, benzophenone (BP) as free radical photo initiator and a diaryliodonium salt DPIHFP as cationic photo initiator. The chemical structures of EA-Si hybrid coatings were characterized by Fourier transform infrared (FTIR), Raman spectroscopy and X-ray diffraction (XRD). The thermal and optical properties of hybrid coatings were investigated by thermal gravimetric analysis (TGA) and UV–vis transmission spectroscopy, respectively. The results indicated that cross-linked network structure of SiOSi formed in the hybrid coatings, which led to the decrease in crystallinity and of EA-Si hybrid coating. The final conversion of CC bonds was also decreased because of the addition of GPTMS. The thermal stability of EA-Si hybrid coatings was enhanced in the second decomposition stage (300–400 °C) because of the existence of organic–inorganic cross-linked network structures. The transparency of coatings at around 346 nm tended to increase with increasing concentration of inorganic precursor GPTMS.Download full-size image

•The high chromic vanadium–titanium magnetite was studied firstly.•The melting characteristics of the burden structures were acquired.•Improve the utilization efficiency of valuable Fe/Cr/V/Ti metalsThe present work studied the softening and melting properties of different burden structures including pellet, sinter and mixed burden (pellet mixed with sinter) with a pellet ratio of 33.65%. The content of high chromic vanadium titano-magnetite in sinter and pellet was different. The experimental results indicated that the compositions of the burden have an important effect on the softening and melting properties. The softening and melting properties of pellet burden structure were improved when the high basicity sinter was added into the acid pellet forming mixed burden. The softening and melting properties of mixed burden with a pellet ratio of 33.65% were better than other burden structures. The initial softening temperature, the temperature interval of softening, the starting melting temperature, the temperature interval of melting, and maximum differential pressure were 1100 °C, 130 °C, 1250 °C, 130 °C and 15.7 kPa, respectively. By comparing the contents of Ti, V and Cr of iron that had dripped through the different burden structures, the content of valuable components (Ti 0.349%, V 0.244% and Cr 0.094%) was highest of the pig iron collected from the mixed burden.

•The method for improving V–Ti sinter strength based on the basic sintering characteristics (BSCs) was proposed.•The application of the method on V–Ti sinter was verified useful.•The key factor influencing the V–Ti sinter strength was revealed.•The principle of choosing matching ore for V–Ti sinter strength was proposed.•The mechanism of the key factors influencing the sinter strength was analyzed.Vanadium titanium magnetite (V–Ti) ore is one kind of important polymetallic minerals in China and the mainstream route of comprehensive utilization process is blast furnace (BF) → basic oxygen furnace (BOF). V–Ti sinter is one of the main burdens employed for BF and poor tumbler strength (TI) limits its efficiency. In order to optimize the V–Ti blends for sinter TI, the basic sintering characteristics (BSCs) of 5 kinds of V–Ti ores, 2 ordinary ores and 3 groups of optimization V–Ti blends were studied. In addition, the sinter pot tests were conducted to obtain the TI of the produced sinter. The influencing factors on assimilation temperature (AT), the relations between the 4 characteristics of BSCs, and the factors influencing the V–Ti sinter TI were analyzed. The results showed that the BSCs of 5 kinds of V–Ti ores DB, HW, YT, JL and FH were good except liquid phase fluidity characteristic index (LF). The key reason why V–Ti sinter had a poor TI was the low LF, which caused the sinter with a large-pore structure. Therefore, the matching ores for optimization V–Ti blends should have a high LF. In addition, self-strength of the bonding phase (BS) and crystal intensity (CI) had an important impact on TI when the melt formed was sufficient and meanwhile the melt had a high LF. Moreover, the proper AT was the prior factor for the melt generation. In addition, the optimization V–Ti blends had good BSCs. The sinter TI with 7% NF ore addition could meet the production requirements for its TI was higher than 65%. Totally, the method of V–Ti magnetite ore blend optimization for sinter strength based on iron ore basic sintering characteristics was useful.