Generally, there are two main routes to remove the free water of cementitious materials: (i) direct drying (oven drying, vacuum drying, freeze drying, P-drying, etc.); and (ii) solvent exchange.
ball mills and combined grinding systems (pre‑grinder plus ball mill) are still widely used. Which option to install depends on the local cement market, the product portfolio and raw materials, as well as the relevant operational skills available to maintain such systems. The industry is facing high volumes in every global
Depending on the type of cement, at 2 days of hydration for a wet cure (cement control) CPA, the amount of nonevaporable water (NEW) decreases from 3.11% to 2.29% compared to air and 2.76% to 2.13, 2.08% to 1.42%, and 1.72% to 1.4% for …
ball mills and combined grinding systems (pre‑grinder plus ball mill) are still widely used. Which option to install depends on the local cement market, the product portfolio and raw materials, …
Cracks were observed when the magnesium silicate hydrate gel cement (prepared by 40% MgO/ 60% silica fume) was dried. This drying cracking is believed to be caused when unbound …
Depending on the type of cement, at 2 days of hydration for a wet cure (cement control) CPA, the amount of nonevaporable water (NEW) decreases from 3.11% to 2.29% compared to air and …
In saline soil or salt lake regions, cement-based materials suffer from combined action of salt attack (SA), carbonation, and cyclic wetting-drying (CWD), and its deterioration mechanism...
For drying of cement raw materials, such fuels as coal, oil and fuel gas can be used for firing. Drum dryers are also operated with waste gases from rotary kilns as well as with hot exit air from grate clinker coolers. The combination of …
Combined water method was employed at different thermodynamic conditions, so the energy of activation in the different systems can be accessed. The introduction of SAP in cement-based materials significantly affects the chemical balance of ordinary Portland cement.
For drying of cement raw materials, such fuels as coal, oil and fuel gas can be used for firing. Drum dryers are also operated with waste gases from rotary kilns as well as with hot exit air from grate clinker coolers. The combination of rotary kiln, clinker cooler and drum dryer saves fuel cost but complicates plant operation.
In saline soil or salt lake regions, cement-based materials suffer from combined action of salt attack (SA), carbonation, and cyclic wetting-drying (CWD), and its deterioration mechanism...
Cracks were observed when the magnesium silicate hydrate gel cement (prepared by 40% MgO/ 60% silica fume) was dried. This drying cracking is believed to be caused when unbound water evaporates from the binder.
Given task is solved due to the method of production of dry construction mixtures, including combined mechanical activation of cement or materials based on it, with addition of dolomite …
Given task is solved due to the method of production of dry construction mixtures, including combined mechanical activation of cement or materials based on it, with addition of dolomite 30% using a Hint disintegrator with subsequent modification with carbon nanotubes in a multi-chamber dosing mixer operating on a „smaller to larger ...
Combined and individual bonding effects of high-alumina cement and silica sol on high-alumina castable were studied. The castable compositions were prepared as per the Dinger and Funk particle size distribution model with distribution coeficient q = 0,21 and 0,29 re-spectively.
Based on an analysis of the cement combined grinding process, historical production data is utilized to establish a predictive model for process indicators using particle swarm optimization …
Based on an analysis of the cement combined grinding process, historical production data is utilized to establish a predictive model for process indicators using particle swarm optimization with extreme learning machine.
