@article{osti_14467, title = {UTILIZATION OF LIGHTWEIGHT MATERIALS MADE FROM COAL GASIFICATION SLAGS}, author = {}, abstractNote = {The integrated-gasification combined-cycle (IGCC) process is an emerging technology that utilizes coal for power generation and production of chemical feedstocks. However, the process …
The amount of IGCC slag added coincides with the amount of slag typically used as a degreaser in the ceramic industry. Specimens are fired at 950 °C, 1000 °C, 1050 °C, 1100 °C and 1150 °C. The mineralogical composition and the IGCC slag grain shape within the ceramic matrix are determined by X-ray diffraction, polarized light microscopy ...
anorthite. The intensity of the peak at 700ºC for the slag is lower than fly ash, which can explained by the finer particle size of the fly ash. -10 0 10 20 30 40 50 60 70 200 400 600 800 1000 1200 1400 TºC µV FA SL Fig.2 DTA traces of IGCC Fly ash. ( )and IGCC Slag( ) The expanding capacity of the ELCOGAS fly ash and slag was followed by ...
The clean coal integrated gasification in combined cycle (IGCC) technology of electrical power generation is different than conventional process in combustible treatment which generates inorganic wastes in the form of glassy slag and fly ash with singular properties. We have studied the fly ash coming from ELCOGAS IGCC power plant as …
IGCC produces almost coal gasification slag as the solid by-product. IGCC slag is generated about 140,000 tons for a year although recycling of it is still in the early stages. We evaluated the ...
The as received fly ash was hand molding in spherical shape (0.90–0.11 mm diameter) by using water (20–22%) as binding, whereas the slag thermal expansion was examined on particles with selected size (2.50–4.75 mm). Thermal expansion were evaluated at increasing temperatures from 900 °C to 1200 °C in steps of 50 °C and a …
The ash solidifies to a slag in the quench vessel and leaves it via a lock hopper. The water leaving the lock hopper is separated from the slag and recycled for slurry preparation. In the radiant cooler configuration (Figure 5-20), which was used in the Cool Water and Polk IGCC plants, full use is made of the potential for heat recovery for ...
Recently, the Integrated Coal Gasification Combined Cycle (IGCC), which generates electricity by gasifying coal unlike in conventional thermal power generation, has been …
@article{osti_20701028, title = {Making IGCC slag valuable}, author = {Wicker, K}, abstractNote = {All indications are that integrated gasification combined-cycle (IGCC) technology will play a major role in tomorrow's generation industry. But before it does, some by-products of the process must be dealt with, for example unburned carbon …
Coal gangue (CG) and coal gasification slag (CGS) contain a large amount of siliceous and aluminous minerals and have certain pozzolanic reactivity. In recent years, the use of CG and CGS as SCMs in concrete attracted more researcher's attention. Wang et al. studied the effects of CG with different fineness (200, 325, 500, 1250, and 2000 mesh ...
blast furnace (BF) slag production ranges from about 300 to 540 kg per tonne of pig or crude iron produced, whereas in steel making 150 to 200 kg per tonne of slag is …
Geopolymers can replace cement and help reduce the environmental impact of concrete construction, but research is needed to ensure their mechanical properties, durability and practicability. The aim of this investigation is to examine the influence of ground granulated blast furnace slag (slag) content on the performance, at the fresh and …
1. Introduction IGCC slag is an inorganic vitreous product which is produced as a result of the combustion process of electric power central stations by the combined …
Aineto et al. [17] confirmed the potential for the conventional lightweight aggregates substituted by using expanded IGCC slag, with values of bulk density, water absorption, freeze resistance and mechanical properties similar to a commercial lightweight aggregates. Yoshitaka Ishikawa [18] addressed it was adequate and possible to use slag …
Section snippets Material properties. To study the effects of different gasification processes on the chemical composition of gasification slag in different regions of China, the gasification coarse slag and fine slag from three large coal chemical bases in Inner Mongolia, Shaanxi and Ningxia were collected respectively.
1 Characterisation of Elcogas fly ash and slag Table 1 gives the chemical analysis of the ELCOGAS IGCC slag and fly ash. The high content of glass former oxides (>80% SiO 2 + Al 2O 3) and low level of modifying or fluxing oxides in its composition are the main reason for the high viscosity of the melted fly ash and slag.
However, environmental legislations has helped to overcome the hindrance to a degree. As per a study by Transparency Market Research, the market for global iron and steel slag …
Abstract Integrated gasification combined-cycle (IGCC) units, which use solid fuels (coal, petroleum coke, etc.) for combined-cycle power generation, have been under development for approximately half a century. At present, the countries of the Asian region show the greatest interest in this type of power plants. Two large IGCC power units …
The IGCC slag did not contain free CaO, and the absence of free lime would address a concern of volumetric expansion during hydration. Automated SEM-EDS analysis revealed that approximately 98% of the IGCC slag particles consisted of calcium-rich aluminosilicate materials. Obvious differences in the concentrations of Si, Al, and Ca …
Conventional coal-fired thermal power generation discharges ash in the form of fly ash, whereas the IGCC releases ash in the form of glassy slag. With the same weight, slag has a volume that is half or less than …
Bricks manufactured from IGCC slag can be classified as facial expressions. [10] 4. Conclusions . Plastic sand bricks display more than one blessing which consist of cost effectiveness, useful resource performance, reduction of greenhouse gasoline emissions, and many others. Plastic sand bricks are also called "Eco-Bricks" crafted from plastic ...
When the IGCC fused slag was finely pulverized (average particle size = 128 µm, the strength increased with an increase in the molar concentration. At 18 M, the maximum strength was 59.908 MPa. A ...
