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DOI: 10.1016/j.ijrmms.2022.105233 Corpus ID: 252787934; Experimental study on improving mechanical mining efficiency of deep banded iron ore by microwave presplitting @article{Lin2022ExperimentalSO, title={Experimental study on improving mechanical mining efficiency of deep banded iron ore by microwave presplitting}, author={Feng Lin …
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The effect of using conventional and high pressure grinding rolls (HPGR) crushing on the ball mill grinding of an iron ore was assessed to determine how these …
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Then, as grinding process of homogeneous ore follows a first-order kinetics, the slope of the line fitted to data points indicates the selection function. ... Natural logarithm of the percentage oversized against grinding time for 253 μm iron ore. 3.3.3. Effect of S i with iron ore size.
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High-phosphorus iron ore resource is considered a refractory iron ore because of its high-phosphorus content and complex ore phase structure. Therefore, the development of innovative technology to realize the efficient utilization of high-phosphorus iron ore resources is of theoretical and practical significance. Thus, a method for …
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This review summarizes the studies of critical parameters to determine the kinetics of reduction. The variables considered were temperature, iron ore type (magnetite, hematite, goethite), H2/CO ...
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The results show that the grinding process of LVTC is consistent with the grinding kinetics equation, and the sieve residues of particles approached a constant …
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The present study initially investigates the kinetics of microwave-assisted grinding and flotation in a porphyry copper deposit. Kinetic tests were conducted on untreated and microwave-irradiated samples by varying the exposure time from 15 to 150 s. Optical microscopy, energy-dispersive X-ray spectroscopy, and scanning electron …
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Mechanical grinding kinetics and particle packing novel characterization of iron ore tailings as inert filler for cement mortar. 2023, Journal of Building Engineering ... The particle coarsening appears when the grinding time increases to 120 min from 100 min. A fitted grinding kinetics function of MMS has been established based on the …
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The present study initially investigates the kinetics of microwave-assisted grinding and flotation in a porphyry copper deposit. Kinetic tests were conducted on untreated and microwave-irradiated samples by varying the exposure time from 15 to 150 s. ... Effect of microwave pretreatment on grinding of iron ore, Asian. J. Chem., …
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The energy consumption of grinding is the subject of many studies, especially in the case of ball mills for grinding clinkers [8,9], fuels [10], iron ore [11], hematite ore [12], sulfide ore [13 ...
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Volume 78, 1 November 2023, 107558. Mechanical grinding kinetics and particle packing novel characterization of iron ore tailings as inert filler for cement mortar. Xiaowei Gu a., …
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Semantic Scholar extracted view of "Iron ore tailing (IOT) chemical composition and content impact on the physical, mechanical, and durability properties of blended cement" by Pedro Henrique Trazzi Vvi et al. ... Mechanical grinding kinetics and particle packing novel characterization of iron ore tailings as inert filler for cement …
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Volume 78, 1 November 2023, 107558. Mechanical grinding kinetics and particle packing novel characterization of iron ore tailings as inert filler for cement mortar. Author links open overlay panel. Xiaowei Gu a., Bonan Liu a., Zhijun Li a., Hao Wang a., Jianping Liu b., …
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However, for any given value of grinding time, the mass fraction of the mixture in the top size interval was approximately the same as the mass-weighted sum of the mass fraction values observed for coal and iron ore when ground alone. Hosten and Avsar [8] studied the grinding of mixtures of cement clinker and trass in the Bond ball mill.
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reactivity of fly ash was greatly improved after wet grinding and confirmed that the activation mechanism. of wet grinding could achieve physical breakage and acceleration of ion dissolution. W ...
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The grinding method and its associated parameters strongly affect the physical properties of the iron ore concentrate. Ball milling (BM) and High-pressure grinding rolls (HPGR) are commonly employed for grinding iron ore concentrate [18], [19], [20]. In BM, the particle size was decreased by impact and attrition breakage, whereas …
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The reduction behavior of iron ore powder by high-volatile coal was investigated, and its kinetic mechanism was clarified. The effect of volatiles in coal on the reduction reaction of iron ore was compared by utilizing a Xinjiang lignite with a high volatile content and its pyrolysis carbon produced by high-temperature pyrolysis to …
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Iron ore is a vital resource for human survival and development, and magnetite as iron-bearing ... In this paper, the grinding kinetics of five narrow-size classes magnetite ores are investigated to
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Ultimately, the m-order grinding kinetics model of the ore was established both before and after microwave pretreatment. The results show that microwave pretreatment causes a significant increase in the number of micro-cracks on the ore's surface. Moreover, the specific surface area and pore volume of the ore increase by 17.29% and 40.98% ...
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The iron powder concentrates with 94.07% total Fe and vanadium-rich titanium slag with 36.32% Ti were obtained by grinding magnetic separation as the grinding alkalinity pH was 13. View Show abstract
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Abstract. Aiming to reveal the kinetic characteristics of ceramic ball grinding of fine magnetite comprehensively, two types of ceramic balls ground with the …
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An analysis of the kinetics of dolomite grinding in a dry ball mill reveals that the following approximations apply for the parameters of the batch grinding model: the size discretized selection ...
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High-iron and low-silicon red mud is not only an alkaline solid waste from Bayer process alumina production, but it is also a very important secondary iron resource. Magnetization roasting is considered as an effective and typical method for the iron recovery and removal of impurities in red mud. In this work, based on the characteristics …
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Simulation of wet ball milling of iron ore at Carajas, Brazil. Laboratory-scale batch grinding tests were performed on 2 sieve size fractions of the almost pure hematite mined at the Carajas mine of CVRD Brasil. Good first-order kinetics of grinding were obtained, both for dry grinding and for grinding with water, using the Bond test levels of ...
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Abstract. Under an invariant and self-similar mill environment, batch wet grinding studies were carried out by grinding mono-sized fractions of quartz, chlorite and their binary mixture at different blending ratios. The results obtained indicate that the breakage behavior of both minerals as well as their mixture followed a first-order model.
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Due to the instability of FeO at temperatures below 843 K, the fluidization reduction pathway of iron ore powder changes with the reduction temperature. Thus, the effect of temperature and reaction pathway interaction on the kinetics of fluidization reduction of iron ore powder under low-temperature conditions ranging from 783 to 903 …
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The grinding experiment was operated with the Anshan type iron ore. The results of the laboratory grinding experiment indicated that the media size ratio, space …
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The grinding kinetics shows that there is a significant effect on the production of fines for the treated sample, since for each grinding time tested, the distribution of passing cumulative size ...
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The calcination and the reduction behaviors of a low-grade manganese ore by methane was studied at 973 K to 1273 K by several techniques. The onset temperatures of thermal decompositions of pyrolusite and calcite phases for this ore were found to be 868 K and 1056 K, and the rates of decompositions are obtained as 1.4 × 10−3 s−1 and 1.53 …
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The grinding behavior of the as-received (5 pct moisture) vanadium-titanium magnetite concentrates in a damp mill was investigated in this paper. A grinding kinetics equation was established based on a population balance model using size distribution data obtained from a laser diffraction technique. X-ray diffraction results show that a loss in …
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