Research on brightening modification of molecular sieves coated fly ash based on alkaline melting hydrothermal method
Source abstract
Abstract
Abstract Improving the utilization rate of fly ash (FA) and realizing its resource utilization has always been a popular research topic in the application field of solid waste recycling. This paper aims to improve the basic brightness of fly ash (FA) before calcium carbonate coating, and realize the filling application of fly ash in medium and high-end paper. Taking advantage of the high brightness of molecular sieves (MS) (brightness ≥ 90 %ISO), the alkali melting hydrothermal synthesis (AM-HS) method was used to generate high brightness MS on the surface of fly ash. The results showed that the optimum conditions of alkali melting hydrothermal synthesis (AM-HS) modification were as follows: the mass ratio of sodium hydroxide to fly ash was 1:1, the time of hydrothermal modification was 6 h, the temperature of hydrothermal modification was 80 °C, and the brightness reached to 64.54 %ISO; The results of SEM, particle size analysis and ultrasonic vibration showed that the surface of fly ash is covered by MS and has strong binding effect.
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Research context
OpenAlex topics: Coal and Its By-products · Recycling and utilization of industrial and municipal waste in materials production · Concrete and Cement Materials Research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
State Key Laboratory of Pulp and Paper Engineering , 26467 South China University of Technology , No. 381 at Wushan Road, Tianhe District , Guangzhou , , China
Funding
Natural Science Foundation of Guangdong Province · Science and Technology Planning Project of Guangdong Province · State Key Laboratory of Pulp and Paper Engineering
References (44)
Show source-provided references
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