Production of Very Fine, Spherical, Particles of Ferriferous Pigments from the Diatomaceous Raw Material of Kazakhstan

Kenzhaliev, B. K.; Kuldeev, E.; Luganov, V. A.; Bondarenko, I.; Motovilov, I. Yu.; Temirova, S.

doi:10.1007/s10717-019-00163-w

Cited by 21 publications

(12 citation statements)

References 10 publications

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“…Rheological (viscosity, limiting friction stress) and thermophysical (density, thermal conductivity, heat capacity) properties of a slip made of thermoplastic beryllium oxide were obtained on the basis of experimental data and generalized in the form of empirical formulas, as in the works [23][24][25][26].…”

Section: Resultsmentioning

confidence: 99%

Phase Transitions in Casting Process of Beryllium Oxide Slip

Kenzhaliyev¹,

Zhapbasbayev²,

Ramazanova³

et al. 2020

ARFMTS

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Beryllium oxide slip casting is used to obtain products of complex shapes of various designs. Ultrasonic activation improves the rheological properties of the beryllium oxide slip. In experiments with ultrasonic activation, physicochemical properties of a beryllium oxide slip were obtained. The calculated beryllium oxide casting data was obtained using the Balkley-Herschel model. The phase transition from liquid to viscousplastic state indicates the presence of a crystallization zone consisting of liquid and solid particles of beryllium oxide. Comparison of calculated data with experiment is presented.

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Section: Resultsmentioning

confidence: 99%

Phase Transitions in Casting Process of Beryllium Oxide Slip

Kenzhaliyev¹,

Zhapbasbayev²,

Ramazanova³

et al. 2020

ARFMTS

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“…In this work, a complex alumina-ferrous coagulant is developed based on natural ferrous diatomite and middlings of alumina production. Diatomite raw materials and middlings of alumina production can be used to obtain a number of industrial products [14][15][16][17][18][19][20]. X-ray analysis has been performed using DF8 Advance Diffractometer of BRUKER (emission α-Cu) for both ferriferous diatomite samples from Zhalpak deposit in Kazakhstan and sintered material from JSC Pavlodar Aluminum Plant.…”

Section: Methodsmentioning

confidence: 99%

Complex Alumina‐Ferrous Coagulant for Effective Wastewater Purification from Hydrogen Sulfide

Kuldeyev

Tastanova

Bondarenko

et al. 2021

Advances in Materials Science and Engineering

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The article provides an overview of studies on the causes of the formation of hydrogen sulfide in anaerobic conditions of urban sewage systems and methods for neutralizing toxic reagent sulfur-containing compounds. It is noted that the presence of sulfur compounds and organic components in sewage flow leads to the formation and release of hydrogen sulfide into the atmosphere of settlements. Three main categories of methods for purifying sewage wastewater from hydrogen sulfide are presented. In this work, a complex alumina-ferrous coagulant has been developed from Kazakh raw materials. Based on natural ferruginous diatomite and middlings of sintered alumina, a complex alumina-ferrous coagulant has been synthesized, which is effective in purifying wastewater from hydrogen sulfide, accelerating the processes of sedimentation and clarification of sewage slurries. Experimental results also show that with the supply of increased amounts of coagulant, oil and oil films disappear from the surface of the cylinder, an almost complete purification of effluents from hydrogen sulfide compounds occurs, and the color of the liquid part is greatly reduced. In addition, the advantage of the developed reagent is that it is presented in the form of fine powder and can be easily dosed and added to a canalization pump station to interact with diluted hydrogen sulfide and be transported to sewage fields. Compared to other proposed methods in previous works, the reagent is suitable to be used directly in sewage systems such as sewage waters treatment plants and collectors to prevent hydrogen sulfide emission into the air atmosphere of populated areas, as well as at city sewage water treatment stations after air tanks and before secondary clarifiers to obtain better purified water suitable for watering agricultural plants.

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“…The waste of titanium-magnesium production contains cesium, niobium, tantalum, rubidium, scandium, rare earth elements and other metals. Potassium and magnesium are also lost among others in the waste, having an average content of potassium chloride of 50-60%, magnesium 25-30% [5,26]. At the same time, UKTMP JSC procures carnallite that is a reagent consisting of a mixture of magnesium and potassium chlorides, abroad at fairly high prices.…”

Section: Introductionmentioning

confidence: 99%

Studies on Valued Components Extraction from Titanium-Magnesium Production Wastes

Almagul¹,

Shah²,

Baltabekova³

2020

ARFMTS

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Based on the results of studies on the extraction of rare-earth elements from exhausted molten titanium chlorinators and the production of carnallite from chloride waste from titanium-magnesium production, the possibility to obtain REE production solution suitable for their separation and synthetic carnallite intended for chlorination of titanium slags is demonstrated. A purified water leaching solution from the exhausted molten titanium chlorinator (EMTC) was obtained to isolate synthetic carnallite with the addition of hydrochloric acid and magnesium electrolysis cell sludge up to pH 6.8-7.6. Physicochemical analysis of EMTC showed that the composition contains rare-earth elements in the form of oxides and water-soluble chlorides. The optimal EMTC water leaching mode was established: S:L ratio = 1:0.7, temperature 20-25 °С, duration-60 min. In this case, a solution was obtained with a concentration of 0.532 g/dm 3 of the sum of rare-earth elements, 122.8 g/dm 3 of iron, pH 0.76. The separation of iron from a chloride solution during precipitation with a solution of potassium hydroxide in the range of pH 2.6-3.1 at a temperature of 80 °C. The precipitation of REEs from the solution with oxalic acid in an amount of 150% of the amount required stoichiometrically in the form of oxalates with a pulp exposure time of oxalates of 4 hours. The precipitate formed from oxalates was washed on the filter with a 2% oxalic acid solution at S:L = 1:8. Obtaining a collective REE concentrate in the processing of exhausted molten titanium chlorinators. The throughout recovery of rare-earth elements from EMTC into collective concentrate was 66%.

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Production of Very Fine, Spherical, Particles of Ferriferous Pigments from the Diatomaceous Raw Material of Kazakhstan

Cited by 21 publications

References 10 publications

Phase Transitions in Casting Process of Beryllium Oxide Slip

Phase Transitions in Casting Process of Beryllium Oxide Slip

Complex Alumina‐Ferrous Coagulant for Effective Wastewater Purification from Hydrogen Sulfide

Studies on Valued Components Extraction from Titanium-Magnesium Production Wastes

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