The improvement of industrial parameters like the basicity and sintering temperature selection raw materials to form acicular calcium ferrites become hot topic in production. However, experimental with pot laboratory is still a main method up now, no effective mathematical model or experience equations were developed. Factsage software for thermodynamic calculation ironmaking steelmaking. In present study, was used calculate liquid phases formulation during sintering. effect chemical...

The granulation property of iron ores was generally influenced by their wettability, surface roughness and shape the ore. In this study, were characterized ratio BET specific area (SBET) to (SLS) calculated using size distribution obtained a laser diffraction method. Wettability measuring contact angle (θ) between ore water. Bed permeability used as an evaluation index effect. A variety materials subjected test under actual production condition. Special attention paid four with different...

Contact angle, as a key index for the wettability of iron ore particles by water, is very important processing like beneficiation, sintering and pelletizing.

Together with the conventional granulation, a proposed pre-wetting granulation for two commercial sinter mixtures consisted of six different iron ores and other auxiliary materials has been investigated under controlled laboratory conditions. A method to describe size variation granules between trials was studied in this study. It is by drawing cumulative undersized curve (CUS curve) differential (Δ‑CUS into one figure. The results indicated that (1) more water available particles raw...

Existing remote monitoring systems are usually situated in a hospital off line and the cost of sending physiology data by computer is high can only be used within one hospital. In this paper, real-time electrocardiogram (ECG) system proposed based on field programmable gate arrays (FPGA). The FPGA chip taken as central microprocessor applies structured design very speed integrated circuit hardware description language (VHDL) to collect transmit ECG signals. experiment shows that has good...

With the application of large amount pulverised coal injection into blast furnace, hydrogen content in gas will increase, which accelerates reduction iron ore lump zone furnace as well carbon-deposition reaction. This study has investigated effect addition on reaction during pellets through thermodynamic calculation and experiment. The results show that H2 can promote reaction, while increase temperature CO2 significantly inhibit it. preference region for C formation is about 600°C....

The adopted conventional granulation and proposed pre-wetting for six sinter mixtures were reinvestigated interpreted from the perspective of particle size analysis. To research experimental data two processes, mass fractal models further discussed in characterization distribution these mixtures. It was found that: (1) Compared to granulation, can significantly change distributions before after granulation. (2) A characteristic sizes observed processes. be simulated by models. (3) Using such...

The characterization of the surface area iron ore is vital importance for studies mineral processing. specific particles can be measured by nitrogen adsorption, laser diffraction, and mathematical models based on size distribution. difference among these three methods its indication granulation process were discussed. It was found that shapes influences apparently. roughness particle apparently, samples with like-slice like-layer have high area. experiments shows efficiency increases...

The relative contact angle (?RCA) for seven iron ore fines was measured by using Washburn Osmotic Pressure method under laboratory conditions. By choosing cyclohexane as the reference that can perfectly wet particles, angles were and varied from 57? to 73?. With volume % of goethite (?G) variable, a new model developed. expected pure is about 56?, while free samples 77?. Physical properties, such surface morphology (SMI) pore (Vpore) influence angle. ?G be expressed function SMI VPore. Thus,...

The granulation process, which is determined by many factors like properties of the mixture and operating parameters, very importance for getting a good permeability burden in sintering strand. prediction size distribution granules its bed artificial neural network was studied this paper. It found experiments that order significance process water content added into mixture, mass fraction particles 0.7-3 mm, moisture capacity. fractions mm have positive relation to granulation, While,...

Facing the consumption of high-grade iron ore, high-alumina ore emerges as a potential alternative for steel companies aiming to cut costs and address resource shortages. This study systematically investigated impact increasing proportion on sintering performance through sinter pot tests. The detailed microstructural morphological analyses produced phase, combined with results thermodynamic calculation liquid phase formation, elucidated transformation mechanism properties in varying alumina...