Evaluation and comparison of exergy-based resource consumption for fly ash utilisation in a cement clinker production system and landfill disposal

2021 ◽  
Vol 36 (2/3/4) ◽  
pp. 414
Author(s):  
Yanjing Wang ◽  
Suping Cui ◽  
Yu Liu ◽  
Boxue Sun ◽  
Xianzheng Gong ◽  
...  
Keyword(s):  
Fly Ash ◽  
Production System ◽  
Resource Consumption ◽  
Cement Clinker ◽  
Clinker Production ◽  
Landfill Disposal

Numerical Simulation of C1 Cyclone in a 5000t/d Cement Clinker Production System

2014 ◽  
Vol 997 ◽  
pp. 762-765
Author(s):  
Li Long Dong ◽  
Wei Lin Zhao ◽  
Jian Rong Wang ◽  
Zong Jun Geng
Keyword(s):  
Numerical Simulation ◽  
Flow Velocity ◽  
Production System ◽  
Gas Flow ◽  
Cement Clinker ◽  
Movement Trajectory ◽  
Cement Production ◽  
Velocity Pressure ◽  
Gas Flow Velocity ◽  
Clinker Production

In order to investigate the characteristics of C1 cyclone in a 5000t/d cement production system, the gas flow velocity, pressure and raw particles movement trajectory in this cyclone was simulated on the basis of Fluent 6.3. The RNG k-ε turbulence model and the stochastic trajectory model were proposed. The results indicate that the gas flow velocity and pressure distribute symmetrically, the raw meal particles revolve along with the whirling flow and can be separated more efficiently from the gas in this cyclone.

The Effect on Cement Mortar and Concrete by Admixture of Spray Drying Absorption Products

1989 ◽  
Vol 178 ◽  
Author(s):  
Kirsten G. Jeppesen
Keyword(s):  
Grain Size ◽  
Fly Ash ◽  
Cement Mortar ◽  
Setting Time ◽  
Mineralogical Composition ◽  
Cement Clinker ◽  
Strength Development ◽  
Fall Meeting ◽  
Freeze Thaw ◽  
Spray Dried

AbstractSpray dried absorption products (SDA) having special characteristics are used as substitutes for cement in the preparation of mortars; the qualities of the resulting mixed mortars are described. Conditions are described for mortar mixes, data for which were presented at the MRS Fall Meeting 1987.The influence of the composition of the SDA on water requirement and setting time has been studied. A full scale project involving 3 precast, reinforced concrete front-elements containing 20 and 30 wt.% SDA is described. Strength development, mineralogical composition and corrosion were monitored for two years.A non-standard freeze-thaw experiment was performed which compares mortars containing SDA and fly ash (FA) and also shows the effect of superplasticizer.The possibility of improving the SDA by grinding has been tested and a limited improvement has been found. The strength of the mixed mortars seems slightly influenced by the grain size of SDAGypsum (CaSO4·2H2O), synthetic calcium-sulphite (CaSO3·½H2O) and 2 SDAs have been used as retarders for cement clinker. Mortar test prisms have been cast and comparative strengths after curing for 3 years are reported

Microstructure of Cement Blends Including Fly Ash, Silica Fume, Slag and Fillers

1986 ◽  
Vol 86 ◽  
Author(s):  
Micheline Regourd
Keyword(s):  
Fly Ash ◽  
Portland Cement ◽  
Pore Size Distribution ◽  
Pore Size ◽  
Silica Fume ◽  
Blended Cement ◽  
Cement Clinker ◽  
Microstructural Development ◽  
Limestone Filler ◽  
Portland Cement Clinker

ABSTRACTThe hydration of a blended cement through hydraulic or pozzolanic reactions results in heterogeneous polyphase materials. Because portland cement clinker is the major component in most cement blends, the microstructural development of portland cement hydrates, including C-S-H and pore structures, is first discussed. Slag, fly ash, silica fume and limestone filler cements are then compared to portland cement with regards to C-S-H morphology and composition, aluminate crystallization, cement paste interfaces and pore size distribution.

Estimating the Strength of Stabilized Dispersive Soil with Cement Clinker and Fly Ash

2019 ◽  
Vol 37 (4) ◽  
pp. 2915-2926 ◽  
Author(s):  
Samaptika Mohanty ◽  
Nagendra Roy ◽  
Suresh Prasad Singh ◽  
Parveen Sihag
Keyword(s):  
Fly Ash ◽  
Cement Clinker ◽  
Dispersive Soil
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