To replace part of sinter with pellets to achieve energy saving and emission reduction, high-basicity pellets are investigated. In this study, the effect of basicity and roasting temperature on the compressive strength and microstructure during the induration is examined. Green pellets (basicity: 1.5–3.5) are made by laboratory-scale …
Pellets are one of the principal raw materials of blast furnaces 1,2,3 and have the advantages of high total iron content, less gangue content, high compressive strength and uniform particle size. 4 Compared with sinter production, pellets have lower energy consumption and produce less pollution. When pellets are used for …
The maximum compressive strength rating of 8.58 N/mm 2 was recorded with ratios of 8:2 (Iron tailing and cement). However, in process of making it economical, the ratio of 9:1 has opted and this ratio complies with the requirement of the Indian standard (IS: 1077:1992) of the common burnt clay building bricks.
The addition of iron ore tailings enhances the compressive strength and impermeability of UHPC mortars due to the filling effect of IOT and the pozzolanic reaction of part of the finer IOT when the substitution rate is no more than 40%. The replacement ratio of 40% shows the best results, with low permeability and the maximum …
The research on whether can iron ore tailing improve the compressive strength of alkali- activated slag ing concrete is conducted. The experiment shows that too little or too much powder from iron ore tailing will reduce the compression strength of alkali activated slag concrete, when powder from iron ore tailing achieving …
The optimum compression strength is achieved for the mix containing 10% iron ore tailings. After the beneficiation of iron ore, the waste is generated, which arise …
Compression strength (daN/p) 250 min: Size distribution (+8mm to -18 mm) 95 % min: Size distribution (-5 mm) 1.50 %: Porosity: ... The strength of iron ore pellets is important in minimizing degradation by breakage and abrasion during handling and shipping, and in the blast furnace. Strong bonding in pellets is believed to be due to grain ...
Tailing storage facilities are very complex structures whose failure generally leads to catastrophic consequences in terms of casualties, serious environmental …
replaced by Iron Ore Tailings, compressive strength increases for all three curing periods. Whereas, it only increases for partial replacement of fine aggregate. After 50% replace strength starts decreasing Fig.5.1.1: - Graph comparing Results of compressive strength after 7 days, 21 days, and 28 days ...
strength of iron ore pellets after they are reduced as per reducibility test conducted in accordance with IS : 8167-1976t. 2. SUMMARY OF METHOD 2.1 Individual reduced iron ore pellets are placed in a compressive testing machine and a load is applied at. constant speed of compressive platen
The split tensile strength, flexural strength and durability assessments were done for the mix to obtain optimum compression strength. The test results show the workability falls off with the increment of iron ore tailings in percentage, while the compression strength values up to 30% iron ore tailings replacement are above the …
Natural sand and iron ore tailings were used as aggregates. The natural sand was originally excavated from the lower reaches of Yangtze River and had an apparent density of 2.63 g/cm 3.The tailings were obtained from the local iron and steel industry and had an apparent density of 2.62 g/cm 3.The chemical composition of the …
The compressive properties, iron tailings properties, pore structure, interfacial transition zone, and element distribution of hydration products of concrete …
Unconfined compressive strength, split tensile strength, initial shear stiffness, mineralogy, chemical composition, and microstructure of IOTs-AAB were …
Concrete containing iron ore tailings (IOT) enhances compressive and splitting strengths. •. IOT concrete improves durability properties and resists …
Green pellet strength and plasticity are important parameters for the productivity of an iron ore pelletizing plant. Green pellet strength is described by two test values, that is by drop number and compression strength. The drop number describes the green pellet strength during a fast impact such as the impact that occurs during unloading
4.2.2 Alumina Content Versus Pore Phase Grains Density. The pore phase density for pellets with minimum alumina content of 1 wt% in the pellet has 80.2 grains/mm 2 with a further increment of alumina content 2 wt% pore density decrease 47.2 grains/mm 2 which is the lowest in the four samples. It is remarkable that pore density increase with …
Enter the email address you signed up with and we'll email you a reset link.
Effect on Compressive Strength of Iron Ore Pellets Rakesh Prasad, Sadhna Bijrothiya, Manoj Narwariya, and Naresh Kumar 1 Introduction ... Kawachi S, Kasama S (2011) Effect of micro-particles in iron ore on the granule growth and strength. ISIJ Int 51(7):1057–1064.
thermal compressive strength of pellet was tested and automatically recorded by the data acquisition system. For each test, ten pellets were measured, and the average value was used as the final experimental result. 2.3 Characterization methods Mechanism of thermal compressive strength evolution of carbon-bearing iron ore pellet without…
DOI: 10.1007/s42243-024-01245-y Corpus ID: 270086036; Mechanism of thermal compressive strength evolution of carbon-bearing iron ore pellet without binders during reduction process
During the experiment, concrete cubes were prepared with 10- composition of iron ore waste to evaluate their compressive strength. Results from the experimentation revealed that, concrete cubes prepared by partially replacing sand with iron ore waste often yield a better compressive strength than a conventional concrete.
The global iron-producing industries are trying to use the high alumina content iron ores due to the exiguity of high-grade ores and economic reasons. For this purpose, this present study focuses on the utilization of high alumina hematite iron ores obtained from eastern part of India in pelletization experiments. The effects of firing …
Utilization of Iron Ore Tailings for Brick Manufacture from Donimalai Mines of Karnataka, India ... Bricks were air dried for 24 hours, placed in oven for 115 ± 10 °C for 24 hours. Mechanical properties such as compressive strength (CS), water absorption (WA), and efflorescence were measured. The maximum CS of 8.58 N/mm 2 was recorded for ...
Request PDF | Effect of high basicity on compressive strength and microstructure of iron ore pellets containing TiO 2 | A laboratory study is carried out to characterize the effect of basicity ...
Download Citation | Mechanism of thermal compressive strength evolution of carbon-bearing iron ore pellet without binders during reduction process | Against the background of "carbon peak and ...
with partial replacement of sand with iron ore tailing. The workability of concrete decreases by addition of Iron Ore Tailing. 4.2 Compressive Strength test result Table 4, shows the Compressive strength of concrete mixes made with partial replacement of sand with iron ore tailing was determined at 7, 14, 21 and 28 days. It was
compressive strength (CS) of 25.40 MPa at 950 C i n. 40:60 proportions of clay and waste, respectively. Further, water absorption (WA) of iron ore bricks was. low in comparison to fly ash and...
agent in pellet making improved the strength of iron ore pel- lets [13].Timuçin et al. investigated the reducibility of pellets prepared with different percentages of calcined colemanite.
پست الکترونیک: [email protected]
نشانی: شماره 1688، جاده شرقی گاوک، منطقه جدید پودونگ، شانگهای، چین.
کپی رایت © 2024.cryptod تمامی حقوق محفوظ است.نقشه سایت