20151230 The corrosion scale formed on the steel surface in solution containing CaCO 3 is a carbonate with iron and calcium (Fe x Ca 1−x CO 3) while the corrosion scale formed without CaCO 3 was composed basically by FeCO 3;
2021226 Calcium carbonate is heated at 900–950 °C to produce pure CO 2 and regenerate calcium oxide 10. The pure CO 2 generated is then utilized and stored. The
202311 With the increase of steel slag concentration, the solubility of CO 2 in seawater increases, resulting in the increase of calcium carbonate precipitation.
20201014 We report here the role of Ca and formation of iron-calcium carbonate (Fe x Ca y CO 3) through a spiral growth model as in the calcite system and quantify the
2022722 PDF The application of calcium carbonate particles as a green lubricant additive for sheet metal forming processes has been evaluated. Different Find, read and cite all the research you
202361 Carbonation reaction could be divided into three steps: (1) CO 2 dissolution; (2) stripping of calcium ions in steel slag; (3) the formation of carbonate. These involve
2022920 ：. CO 2 、（Carbon Capture Utilization and Storage,CCUS）“”
201411 Calcium carbonate (CaCO 3) is a substance widely used for various purposes, for example, as a filler and pigment material not only in , ,
The conversion of steelmaking slag (a waste product of the steelmaking process) to calcium carbonate (CaCO(3)) was tested using hydrochloric acid, ammonium hydroxide and
202361 In the temperature range of 400–700 °C, calcium carbonate decomposes and the mass loss of CSS and CSSB is 8.36 % and 11.05 %, respectively. The dates support that the content of calcium carbonate in CSSB samples is higher. The carbonation rate of CSS and CSSB samples are respectively 24.9 % and 33.9 % on the basis of
2022819 The improvement of tribological properties of CSCG-C with 5% and 10% water benefited from the influence of water on the film forming capacity of calcium carbonate on the steel surface. In this article, calcium
202041 The traditional way of producing calcium carbonate (Fig. 1), especially nano calcium carbonate (nCaCO 3), involves sub-processes, including limestone calcination, gas scrubbing, and precipitation process.Limestone is fed to a lime kiln and calcined to calcium oxide (CaO) at high temperature (1000 °C) [17, 27, 28].In this sub-process, off-gas
202381 The hypothesis for why the α in EICP-treated steel slag is greater than that of MICP-treated sand is that steel slag particles are coated in calcium carbonate shells (as shown in Fig. 13c). However, only a few CaCO 3 crystals precipitated on the surface of sand particles but failed to coat them (as shown in Fig. 13 a, b).
2010121 The steel industry is characterised by large amounts of CO 2 emissions, but there is no easy means to reduce these emissions. One interesting option for the reduction of CO 2 emissions could be the utilisation of steelmaking slags for carbon dioxide mineralisation.In this option CO 2 is bound with the calcium of the slag material,
2020101 Fig. 2 showed the morphology of the calcium carbonate crystal with the template of yeast, Staphylococcus aureus, and E. coli, respectively. Obviously, the appearances were different. Before the coating process, the surfaces of all three cells were smooth (Fig. 2 A1, B1, and C1).Fig. 2 A2, B2 and C2 showed the topography of the
2021121 Steelmaking slags (both iron slag and steel slag) are by-products during iron and steelmaking process and have the same properties in the carbonation [30].Table 1 demonstrates that the main chemical components of steel slag are CaO, S i O 2, MgO, A l 2 O 3 and F e 2 O 3 [31].Like many previous report, steelmaking slag is mainly composed
2022121 Nano-structures of carbonation products in steel slag were investigated by FIB-TEM. • SiO 2 gel was formed locally after the Ca 2+ leaching from the calcium silicate mineral.. Mg in steel slag reacts with SiO 2 gel to form M-S-H rather than co-precipitated with Ca to form Mg-calcite.. Fe and Al containing minerals exhibited very low carbonation
2022920 , , , , , . [J]. (), 2022, 58 (6): 953–960. Qiubai Li, Xu Xueyang, Fahua Zhu, Kui Xie, Liang Zhao, Chen Zhu. Circulatory leaching and calcium carbonate precipitation study based on indirect
2019111 In this work, CaCO 3 deposition behavior on carbon steel with different corrosion types was further investigated in a scaling system containing NaNO 2 corrosion inhibitor, which was used to tune the corrosion style of substrate [36]. Then, a mechanism was proposed to explain the deposition behavior of calcium carbonate scale.
2019120 The steel slag does not have a good hydraulic property, because of its SiO 2 content it is amorphous and the little amount of tri-calcium silicates are presented in its mineralogical phases (Roslan et al., 2016).Therefore, the steel slag binding potential and contribution on compressive strength in Portland cement systems is not significant for
2023213 Therefore, the AMD neutralisation potential and acid neutralisation capacity of the steel slag-based precipitated calcium carbonate versus the commercial calcium carbonate has been evaluated. AMD containing about 2000 mg/l SO 4 2-,pH of about 3 and acidity of about 1000 mg/l was collected from Emalahleni Reclamation Plant
202231 There is a great potential for MICP to be applied in the reusing and recycling of calcium-based solid waste from the abundant sources (Seifan and Berenjian, 2019; Chuo et al., 2020).It is noteworthy that solid wastes generated from mining, iron and steel metallurgy, power generation, and manufacturing industries, such as burnt ashes, slag,
202311 Under the batch processing mode, the pilot plant can produce about 10 kg of high-purity calcium carbonate by using 20 kg of steel slag and 190 L of liquid solvent, and the purity of precipitated calcium carbonate (PCC) PCC is higher than 99.5 %. This process can achieve a calcium extraction rate of nearly 80 % and a carbon dioxide conversion
2017925 The high calcium content of solid wastes such as steelmaking slags makes them suitable raw materials for CO 2 carbonation [8], [9]. Therefore, numerous efforts have been devoted to maximizing the calcium extraction efficiency and optimizing the production of precipitated calcium carbonate from steel slags.
2022722 ST containing larger particles of calcium carbonate exhibited a better lubricity in rolling of steel than FT. Although the particle size of calcium carbonate powder is about 1 μm, the dispersed
20221022 The carbonation of steel converter slag features a negative CO 2 emission of 0.3 kg CO 2eq per kg of calcium carbonate, as compared to 1.04 kg CO 2eq per kg of calcium carbonate that is produced from natural limestone. Notably, the post-treatment such as recycling the washing water may contribute substantial carbon emission and
Calcium carbonate is a calcium salt with formula CCaO3. It has a role as an antacid, a colouring, a firming agent and a fertilizer. It is a calcium salt, a carbonate salt, a one- carbon compound and an inorganic calcium salt. ChEBI. Calcium carbonate is an inorganic salt used as an antacid.
200811 It was calculated that the production of pure calcium carbonate from steel converter slag by . using ammonium salts as a solvent has clearly negative CO 2 emissions.
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