behaviour of calcium silicate in leaching process

Behaviour Of Calcium Silicate In Leaching Process

Behavior of calcium silicate in leaching process | …

During the process of sintering-leaching the minerals and alumina phases present in red mud like gibbsite, gibbsite co-existing with boehmite, alumino-goethite, boehmite and sodalite is converted to soluble sodium meta-aluminate as well as stable phases of calcium ferrite, titanate and silicate.

Behaviour Of Calcium Silicate In Leaching Process

3D Computational Simulation of Calcium Leaching in Cement . Calcium leaching is a degradation process consisting in progressive dissolution of the cement paste by migration of calcium atoms to the aggressive solution. It is therefore, a complex phenomenon involving several phases and dissolution and diffusion processes simultaneously.

Behavior of calcium silicate in leaching process--《 …

Behavior of calcium silicate in leaching process LIU Gui-hua, LI Xiao-bin, PENG Zhi-hong, ZHOU Qiu-sheng (School of Metallurgical Science and Engineering, …

Behavior of calcium silicate in leaching process - 成 …

Based on the thermodynamic calculation, the mole ratio of CaO to SiO 2, temperature and A/S of bauxite have a profound influence on the mole ratio of 2CaO·SiO 2 to CaO·SiO 2 in sinter. CaO·SiO 2 and β...

Behavior of calcium silicate in leaching process ...

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Effects of Leaching Behavior of Calcium Ions on ...

Effects of Leaching Behavior of Calcium Ions on ... During the leaching process, calcium hydroxide was found to be the first hydration product leached ... (fly ash, slag, and silica fume) on the leaching behavior of calcium ions regarding compression and durability of cemented-based materials.

Calcium leaching behavior of cementitious …

11-6-2018 · The calcium leaching behavior of cement paste and silica fume modified calcium hydroxide paste, exposed to hydrochloric acid solution, is reported in this paper. The kinetic of degradation was assessed by the changes of pH of hydrochloric acid solution with time. The changes of compressive strength of specimens in hydrochloric acid ...

Microwave-assisted selective leaching behavior of calcium ...

Calcium silicate or lime bound phase as (Ca,Fe,Mn,Mg)O can be the more reactive components for different steelmaking slag [ 12 ]. The calcium extraction efficiency from the slag can be improved through lowering the particle size of slag and solid to liquid ratio of the leaching system [ 14 ]. The PCC produced from this process is comparable to

Cs Leaching Behavior During Alteration Process of …

Kuroda K., Toda K., Kobayashi Y., Sato T., Otake T. (2019) Cs Leaching Behavior During Alteration Process of Calcium Silicate Hydrate and Potassium Alumino Silicate Hydrate. In: Glagolev S. (eds) 14th International Congress for Applied Mineralogy (ICAM2019). ICAM 2019. Springer Proceedings in Earth and Environmental Sciences. Springer, Cham

Stability of calcium silicate in basic solution | …

The results indicated that calcium silicate exists much more stably in caustic solution than that in soda solution, and CaO . SiO(2) is more stable than beta-2CaO . SiO(2) whether in caustic solution or in soda solution. The increase of sintering temperature favored the stability of calcium silicate in the leaching process. When beta-2CaO .

Behavior of SiO2 in the leaching process ... - …

Effect of alumina concentration on the leaching process Al2O3 concentration of pregnant liquor is inevitably different owing to the difference of Al2O3 concentration in sodium aluminate solution. Therefore, the reliability of analytical results of SiO2 behavior in the leaching process under this situation is insufficient.

Analysis of calcium leaching behavior of plain and ...

The calcium ion leaching behavior of cement pastes modified with a high-alkali fine glass powder, silica fume, and fly ash, exposed to deionized water, is reported in this paper. Porosity enhancement in pastes subjected to leaching is attributed both to the dissolution of calcium hydroxide (CH) as well as decalcification of C–S–H gel.

Effects of Leaching Behavior of Calcium Ions on ...

11-1-2013 · Leaching of calcium ions increases the porosity of cement-based materials, consequently resulting in a negative effect on durability since it provides an entry for aggressive harmful ions, causing reinforcing steel corrosion. This study investigates the effects of leaching behavior of calcium ions on the compression and durability of ...

Behavior of calcium silicate in leaching process|LIU …

Behavior of calcium silicate in leaching process. LIU Gui-hua(刘桂华), LI Xiao-bin(李小斌), PENG Zhi-hong(彭志宏), ZHOU Qiu-sheng ...

Effect of Hydrochloric Acid on Leaching Behavior of ...

In this leaching process a dilute solution of hydrochloric acid has been used. After the dissolution process the leaching agent is converted into calcium chloride as filtrate. To improve the process economy it is essential to regenerate the leaching agent so that it may be recycled again into the leaching process.

Analysis of calcium leaching behavior of plain ... - …

Read "Analysis of calcium leaching behavior of plain and modified cement pastes in pure water, Cement and Concrete Composites" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

Calcium leaching behavior of cementitious …

1-6-2018 · It is reported that silica fume decrease portandite content and form lower C/S ratio C-S-H gel than Portland C-S-H by pozzolanic effect, thus decelerates the leaching process of calcium ions. Therefore, it is very necessary to investigate the calcium leaching behavior of …

Leaching of both calcium hydroxide and C-S-H …

Read "Leaching of both calcium hydroxide and C-S-H from cement paste: Modeling the mechanical behavior, Cement and Concrete Research" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

Hydration of dicalcium silicate and diffusion through neo ...

Hydration of dicalcium silicate and diffusion through neo-formed calcium-silicate-hydrates at weathered surfaces control the long-term leaching behaviour of basic oxygen furnace (BOF) steelmaking slag Douglas I.Stewart1 & Andrew W.Bray2 & Gideon Udoma1 & AndrewJ.Hobson2 & William M.Mayes3 & MikeRogerson3 & Ian T. Burke2

Leaching of both calcium hydroxide and C-S-H …

20-11-2019 · This stone deals with the effect of the leaching process of cement based materials on their mechanical properties. This process induces mainly a total leaching of Ca(OH){sub 2} and a progressive decalcification of C-S-H which leads to a gradient of C/S ratio in the leaching zone. In a previous work

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