H
Hongwen Ma
Researcher at China University of Geosciences (Beijing)
Publications - 32
Citations - 586
Hongwen Ma is an academic researcher from China University of Geosciences (Beijing). The author has contributed to research in topics: Potassium & Zeolite. The author has an hindex of 12, co-authored 31 publications receiving 433 citations.
Papers
More filters
Journal ArticleDOI
Hydrothermal synthesis of zeolite A from K-feldspar and its crystallization mechanism
TL;DR: In this article, the effects of reaction time on the conversion of X-ray amorphous materials (AS) to zeolite A were investigated and the results indicated that the AS was dissolved completely and abundant nuclei were formed during the first hour of the crystallization stage.
Journal ArticleDOI
Hydrothermal decomposition of K-feldspar in KOH–NaOH–H2O medium
TL;DR: In this paper, the authors studied the hydrothermal decomposition of K-feldspar in mixed alkaline solutions containing NaOH and KOH at a concentration of 8.5 M.
Journal ArticleDOI
Synthesis and characterization of analcime using quartz syenite powder by alkali-hydrothermal treatment
TL;DR: Analcime was successfully synthesized for the first time via a hydrothermal treatment of quartz syenite powder and NaOH solution as mentioned in this paper, which was carried out at the temperature from 240°C to 260°C for 2-8h using different concentrations of NaOH solutions and mass ratio of Naoh/syenite.
Journal ArticleDOI
Recovery of magnesium and potassium from biotite by sulfuric acid leaching and alkali precipitation with ammonia
TL;DR: In this paper, a process for the recovery of magnesium (Mg) and potassium (K) from biotite was developed using sulfuric acid leaching and precipitation with ammonia.
Journal ArticleDOI
Hydrothermal extraction of potassium from potassic quartz syenite and preparation of aluminum hydroxide
TL;DR: In this paper, the optimal extractions of K2O and SiO2 from the potassic quartz syenite powder were 93.2% and 62.5% respectively.