A5093439576- Extraction and Separation Processes
- Mining and Gasification Technologies
- Minerals Flotation and Separation Techniques
- Radioactive element chemistry and processing
- Metal Extraction and Bioleaching
- Bauxite Residue and Utilization
- Thermal and Kinetic Analysis
- Chemical Synthesis and Characterization
- Iron and Steelmaking Processes
- Industrial Engineering and Technologies
- Recycling and Waste Management Techniques
Satbayev University
2023-2024
The article presents the research results for synthesis of inorganic sorbents based on manganese oxide compounds. It shows lithium sorption from brines with use synthesized sorbents. effect temperature, molar ratio Li/Mn, and duration obtaining a lithium-manganese precursor its acid treatment was studied. characteristics were sorbent mass to brine volume process In this case, recovery ~86%. A kinetic model determined. kinetics described by pseudo-second-order model, which implies limiting...
The material composition of the sublimates from dust chambers in titanium chlorinators has been studied by chemical, X-ray and microprobe analysis methods. Studies phase chamber have shown that object consists aqueous anhydrous chloride phases to a greater extent. Two forms niobium present, such as oxychloride oxide were found. presence zirconium nature. Experiments for leaching conducted determine optimal process conditions: S:L ratio = 1:8, time 1 hour, temperature 25℃. choose an acidic...
The article presents the results of study for synthesized manganese dioxide sorbent after its saturation with lithium from brine. was previously prepared. For this purpose mixture oxide compounds kept hydroxide in a wet state at 125 °C, calcinated 450 °C and then precursor treated dilute hydrochloric acid. process intended to saturate performed by putting it contact lithium-containing brine pH 8.77 T = 40°C 24 hours four cycles. studied using X-ray phase thermal analysis methods. showed that...
The increasing demand for rare refractory metals such as niobium in high-tech industries requires the development of efficient and sustainable methods to extract them from secondary sources, including industrial by-products. This study studied extraction a fluoride-sulfuric acid solution obtained by leaching niobium-containing intermediate product. A comprehensive assessment various organic extractants, methyl isobutyl ketone, tributyl phosphate, trioctylamine, Cyanex 923, was performed,...
Processing of apatite raw materials is associated with the formation multi-tonnage waste - phosphogypsum. The content rare-earth metals in such reaches 1 %, which allows us to consider it a man-made source and their compounds. Until now there are neither processing enterprises nor effective technological processes for phosphogypsum processing. It rational use method involving extraction valuable components overall reduction volumes. One can be sorption REM after leaching hydrochloric acid....
Lithium production in Kazakhstan could be strategically important for the country as there has been a growing demand this metal of lithium-ion batteries, which are widely used electric vehicles, portable devices and storing energy from renewable sources. In addition, is actively developing its lithium industry looking ways to make most efficient use resources support global energy. The highly selective sorbents can play decisive role development lithium-containing natural resources. paper...
The main purpose of these studies was to study the chemical and mineralogical composition ore Kenshoky-1 deposit with subsequent search experiments on extraction copper from material by sulfuric acid leaching. During research it established that belongs type oxidized cuprous sandstone along contains a significant amount lead small zinc. minerals in this are carbonate – malachite cerussite. A fairly phosphate mineral pyromorphite is present. waste rock quartz, orthoclase, clinochlorine. Iron,...