Study on using steel slag as a raw meal component for cement clinker

2011 ◽  
Author(s):  
Tao Dong ◽  
ZhenDong Tao ◽  
Chang Qing
Keyword(s):  
Steel Slag ◽  
Cement Clinker

Theoretical Calculation and Experimental Study on the Forming Heat of Cement Clinker Made from Steel Slag

2015 ◽  
Vol 814 ◽  
pp. 564-568 ◽  
Author(s):  
Ya Li Wang ◽  
Su Ping Cui ◽  
Gui Ping Tian ◽  
Ming Zhang Lan ◽  
Zhi Hong Wang
Keyword(s):  
Empirical Equation ◽  
Raw Materials ◽  
Steel Slag ◽  
Great Influence ◽  
Cement Clinker ◽  
Chemical Components ◽  
Forming Process ◽  
Acid Dissolution ◽  
Heat Efficiency ◽  
Heat Calculation

When steel slag, a by-product of steel making in impurity catching process, is added, the forming process of cement clinker and the major reactions in that process are changed. Since there are dramatic differences between the chemical components and mineral compositions of steel slag and that of natural cement raw materials, the empirical equation for the calculating forming heats of cement clinker made of limestone and clay is no longer applied for those made of steel slag. In this paper, the empirical equation for forming heat calculation of steel slag added cement clinker was promoted, and testified by acid dissolution experiments. Results showed that the change of raw materials had great influence on the forming heat of cement clinker. When the traditional raw materials were replaced with steel slag, the forming heat of cement clinker reduced. Calculating the forming heat by our revised empirical equation can help reduce errors and bring great convenience for the calculation and evaluation of heat efficiency. This research provides theoretical underpinning for the study and calculation of forming heat of steel slag added cement clinker.

The Activation of Steel Slag and its Application in Construction and Building Materials

2014 ◽  
Vol 884-885 ◽  
pp. 702-705 ◽  
Author(s):  
Lan Lan Li ◽  
Feng Qing Zhao ◽  
Shao Jie Liu
Keyword(s):  
Building Materials ◽  
Steel Slag ◽  
Concrete Block ◽  
Cement Clinker ◽  
Research Progress ◽  
Hydration Reaction ◽  
Crude Steel ◽  
Volume Stability ◽  
Industrial Solid Waste ◽  
Combined Use

Steel slag as the discharged residue during steelmaking process is a kind of industrial solid waste, accounting for about 15 to 20 percent of crude steel in production. Steel slag is mainly similar with cement clinker in mineral and chemical composition, and possesses potential hydration reaction activity. The properties of steel slag, the research progress of activation and volume stability were summarized in this paper. Several approaches of steel slag utilization in construction and building materials were introduced. The combined use of various activation methods and proper treatment will increase the volume of steel slag in autoclaved tailings bricks and aerated concrete block.

Utilization of Steel Slags in the Cement Industry

2014 ◽  
Vol 599 ◽  
pp. 98-102 ◽  
Author(s):  
Jiang Feng Li ◽  
Xiu Cheng Luo ◽  
Meng Ke Sun ◽  
Wei Guo Shen ◽  
Bing Cao ◽  
...  
Keyword(s):  
Steel Slag ◽  
Cementitious Materials ◽  
High Reactivity ◽  
Cement Industry ◽  
Cement Clinker ◽  
Chemical Compositions ◽  
New Approach ◽  
Volume Stability ◽  
Comprehensive Utilization ◽  
Steel Refining

The production of steel slag, a byproduct of the steel refining keeps increasing rapidly and it reached 90.42 million tons in 2011 in China, but its comprehensive utilization ratio is only 22% and far less than the ratio of 65% in Europe. Main chemical compositions of steel slag are CaO, SiO2, Al2O3, FeO, Fe2O3, MgO, MnO, P2O5 and so on, C3S, C2S, C3MS2, RO phase are its common minerals. Due to its high reactivity and Ferro content, steel slag has high potential utilization as supplementary hydraulic cementitious materials or cement clinker meal in cement industry. A method of multiple phased sintering was presented, it can break through the bottlenecks for the steel slag using in the cement industry, e.g. volume stability and grindability ,the carbon emission of cement industry is slashed, it is an effective new approach to massively utilize steel slag in cement industry.

Effect of Cement Clinker on the Properties of Flue Gas Desulphurization Gypsum-Steel Slag Cementitious Composites

2011 ◽  
Vol 250-253 ◽  
pp. 990-993
Author(s):  
Zhi Wang ◽  
Lei Zhang ◽  
Li Ying Fan ◽  
Guo Pu Shi
Keyword(s):  
Flue Gas ◽  
Setting Time ◽  
Steel Slag ◽  
Cement Clinker ◽  
Cementitious Composites ◽  
Excitation Mechanism ◽  
Final Setting Time ◽  
Micro Morphology ◽  
Scanning Electron ◽  
Flue Gas Desulphurization

The effects of cement clinker on the properties of flue gas desulphurization gypsum-based steel slag composites were analyzed in this article and the influence rules of setting time, final setting time, flexural strength and compressive strength of cementitious composites were also discussed. The micro-morphology of the composite was observed by scanning electron microscope. At the same time, the excitation mechanism of cement clinker on gas desulphurization gypsum-based steel slag was put forward. It was demonstrated that cement clinker with content of 2% in the composites can better stimulate the activation of steel slag and improve the mechanical properties of the composites.

scholarly journals Influence of Steel Slag Type on Concrete Shrinkage

2020 ◽  
Vol 13 (1) ◽  
pp. 214
Author(s):  
Maria Dolores Rubio-Cintas ◽  
Maria Eugenia Parron-Rubio ◽  
Francisca Perez-Garcia ◽  
António Bettencourt Ribeiro ◽  
Miguel José Oliveira
Keyword(s):  
Steel Slag ◽  
Cementitious Materials ◽  
Supplementary Cementitious Materials ◽  
Cement Clinker ◽  
Concrete Shrinkage ◽  
Granulated Blast Furnace Slag ◽  
Hydraulic Binder ◽  
Portland Cement Clinker ◽  
Different Characteristics ◽  
Furnace Slag

Building construction and building operations have a massive direct and indirect effect on the environment. Cement-based materials will remain essential to supply the growth of our built environment. Without preventive measures, this necessary demand in cement production will imply a substantial increase in CO2 generation. Reductions in global CO2 emissions due to cement consumption may be achieved by improvements on two main areas: increased use of low CO2 supplementary cementitious materials and a more efficient use of Portland cement clinker in mortars and concretes. The use of ground granulated blast furnace slag in concrete, as cement constituent or as latent hydraulic binder, is a current practice, but information of concrete with ladle furnace slag is more limited. Specific knowledge of the behavior of mixtures with steel slag in relation to certain properties needs to be improved. This paper presents the results of the shrinkage (total and autogenous) of five concrete mixtures, produced with different percentages of two different slags in substitution of cement. The results show that shrinkage of concrete with the two different slags diverges. These different characteristics of the two materials suggest that their use in combination can be useful in optimizing the performance of concrete.

Effect of Phosphogypsum on the Properties of Over-Sulfur Phosphogypsum–Ground Granulate Blast-Furnace Slag Cement

2014 ◽  
Vol 638-640 ◽  
pp. 1453-1459
Author(s):  
Zhi Jiang Lv ◽  
Zong Shou Lin ◽  
Hao Jie Wang
Keyword(s):  
Blast Furnace ◽  
Blast Furnace Slag ◽  
Setting Time ◽  
Steel Slag ◽  
Cement Clinker ◽  
Strength Deterioration ◽  
Volume Stability ◽  
Granulate Blast Furnace Slag ◽  
Mechanical Performances ◽  
Furnace Slag

Over-sulfur phosphogypsum(PG)–ground granulate blast-furnace slag(GGBFS) cement paste is utilized by GGBFS, Portland cement clinker(PCC), additive, water and modificated phosphogypsum paste(MPG), produced by milling PG mixed with a certain proportion of steel slag(SS), GGBFS and water. The effect of PG on the properties of over-sulfur PG– GGBFS cement was investigated. The mechanical performances and hydration mechanism of the cement with different kinds, proportions and particle size of PG were analyzed based on setting time, volume stability, strength test, XRD and SEM analyses. The experimental results show that,the optimum mixture of PG amount in the binder was 45%. Overdose of PG may caused strength deterioration. The optimum grinding time of MPG in the binder was 20min. The soluble phosphorus content of PG in the binder was under 0.05%.

scholarly journals Effect of Selected Alternative Fuels and Raw Materials on the Cement Clinker Quality

2015 ◽  
Vol 10 (2) ◽  
pp. 81-92 ◽  
Author(s):  
Július Strigáč
Keyword(s):  
Sewage Sludge ◽  
Alternative Fuels ◽  
Raw Materials ◽  
Steel Slag ◽  
Raw Material ◽  
Cement Clinker ◽  
Paper Sludge ◽  
Fluidized Bed Combustion ◽  
Suitable Alternative ◽  
Blastfurnace Slag

Abstract The article deals with the study of the effects of alternative fuels and raw materials on the cement clinker quality. The clinker quality was expressed by the content of two principal minerals alite C3S and belite C2S. The additions of alternative fuels ashes and raw materials, in principle, always increased the belite content and conversely reduced the amount of alite. The alternative fuels with high ash content were used such as the meat-bone meal, sewage sludge from sewage treatment plants and paper sludge and the used alternative raw materials were metallurgical slags - granulated blastfurnace slag, air cooled blastfurnace slag and demetallized steel slag, fluidized bed combustion fly ash and waste glass. Meat-bone meal, sewage sludge from sewage treatment plants and paper sludge were evaluated as moderately suitable alternative fuels which can be added in the amounts of 2.8 wt. % addition of meat-bone meals ash, 3.64 wt. % addition of sewage sludge ash and 3.8 wt. % addition of paper sludge ash to the cement raw mixture. Demetallised steel slag is suitable for production of special sulphate resistant cement clinker for CEM I –SR cement with addition up to 5 wt. %. Granulated blastfurnace slag is a suitable alternative raw material with addition 4 wt. %. Air cooled blastfurnace slag is a suitable alternative raw material with addition 4.2 wt. %. Waste glass is not very appropriate alternative raw material with addition only 1.16 wt. %. Fluidized bed combustion fly ash appears not to be equally appropriate alternative raw material for cement clinker burning with less potential utilization in the cement industry and with addition 3.41 wt. %, which forms undesired anhydrite CaSO4 in the cement clinker.

Exploration on Feasibility of Preparing Cement Clinker with Artificial Aggregate Concrete

2011 ◽  
Vol 250-253 ◽  
pp. 906-909 ◽  
Author(s):  
Jin Bang Wang ◽  
Zong Hui Zhou ◽  
Dong Yu Xu
Keyword(s):  
Compressive Strength ◽  
Blast Furnace Slag ◽  
Steel Slag ◽  
High Strength ◽  
Cement Clinker ◽  
Aggregate Concrete ◽  
Cement Ratio ◽  
Concrete Aggregates ◽  
Ordinary Concrete ◽  
Furnace Slag

Combining with the utilization of waste, an new idea of using the waste to prepare high-strength artificial aggregates was put forward in this paper. The concrete was also prepared by using these aggregates. The demolished concrete could be recovered and used as cement raw meal to produce new cement clinker. In this study, the feasibility of making cement clinker with this kind of demolished concrete was studied. The concrete aggregates composed of steel slag, blast furnace slag, coal gangue and fly ash were prepared. The concrete was prepared using these aggregates with the water-cement ratio of 0.45, 0.50 and 0.55 respectively. The compressive strength of the concrete in 28 days is 52.8MPa, 46.4.2MPa and 42.6MPa, respectively, higher than that of ordinary concrete. In accordance with the ratio of cement raw meal, the cement clinker is produced by adding appropriate limestone, clay and other correction materials. After hydrated for 3 days, 7 days and 28 days, the cement paste compressive strength is 47.1 MPa, 59.8 MPa, 75.6 MPa, respectively, which reach the requirements of ordinary 42.5 Portland cement.

Utilization of steel slag for Portland cement clinker production

2008 ◽  
Vol 152 (2) ◽  
pp. 805-811 ◽  
Author(s):  
P.E. Tsakiridis ◽  
G.D. Papadimitriou ◽  
S. Tsivilis ◽  
C. Koroneos
Keyword(s):  
Portland Cement ◽  
Steel Slag ◽  
Cement Clinker ◽  
Portland Cement Clinker ◽  
Clinker Production
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