Directions to Improve the Processing Methods of Anthropogenic Waste of the Ural Region

Tanutrov, I. N.; Sviridova, M. N.

doi:10.18412/1816-0395-2015-8-31-35

Cited by 4 publications

(2 citation statements)

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“…In other works, for example [3][4][5] Thus, despite numerous studies and tests of leading organizations, the problems of processing of RM and OMS still remain one of the most urgent in the field of processing of man-made waste.The authors search for technical solutions for the analysis of literary sources and patents in the field of processing of RM and OMS. A new approach to the disposal of the above-mentioned waste has been developed [7]. Its essence lies in the joint processing of these man-made waste to obtain a product suitable for extracting the main components by melting iron and alumina slag.…”

Section: Technogen-2019mentioning

confidence: 99%

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Research to Develop a Promising Technology for the Joint Disposal of Man-made Wastes

Tanutrov

Sviridova

Lyamkin

et al. 2020

Kms

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The main components of RM are: Fe (35.7 %) in the form of hematite and complex hydroalumination, Ca (11.0 %) in the form of calcite and hydro-aluminosilicates, Al (6.8 %) and Si (4.7 %) in the composition of hydroalumination, Na (2.8 %) in the form of hydroalumination, carbonate and hydroxide, Ti (2.5 %) in the form of rutile. The main components of the OMS are: Fe (71 %) in the form of magnetite, wustite and hematite with a very small amount of fayalite. The contents of Si (in the form of quartz), Al and P (non-forming phases) are within 1–3 %. Granulometric composition of RM is characterized by high dispersion. With an average diameter of 1.6 μm, all particle sizes are in the range of 0.5–12 μm. Granulometric composition of OMS is characterized by complexity. With an average diameter of 8.6 μm, maxima of 0.9 μm and 15 μm and a minimum of about 1.2 μm are observed in the particle size distribution. The specific surface area of the materials is equal to RM 23.7 m2/g, and OMS – 1.9 m2/g. The change of waste properties after exposure to aqueous solutions of alkalis and acids neutralizing the effect of organic (OMS) and alkaline (RM) surface compounds was studied. Neutralization of aqueous suspension with HCl solution leads to removal of alkaline film from the surface. As a result of the impact of reagents, there is a decrease in the content of water-soluble components in the processing products. At the same time, the average particle sizes of RM and OMS increase to 2 and 14 μm, respectively, and the specific surface area to 25.7 and 2.3 m2/g. The distribution of particle size of RM is almost constant, and the OMS is approximately 5 and 10 % of the smoothed maximum and minimum in the area of at least 0.5 and 15 μm. Keywords: red mud, oiled mill scale, chemical, phase, granulometric, composition, specific surface

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Section: Technogen-2019mentioning

confidence: 99%

“…• Red mud possesses good binding properties for agglomerating particulate ironcontaining raw materials [7].…”

Section: Technogen-2019mentioning

confidence: 99%

Research to Develop a Promising Technology for the Joint Disposal of Man-made Wastes

Tanutrov

Sviridova

Lyamkin

et al. 2020

Kms

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Study of the Slag of Cyclone Smelting to Choose the Direction of Its Further Use

2020

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Technological modeling of joint leaching of oily rolling scale and red mud

Tanutrov

Sviridova

Chesnokov

et al. 2021

Izv. vysš. učebn. zaved., Čern. metall.

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From the analysis of data on beneficial use of red mud and oily mill scale, a new direction of recycling has been formulated: the joint processing of these wastes to produce liquid products. Technological modeling of the stage of joint water treatment of a mixture of red mud and oily mill scale was performed at an enlarged laboratory unit. The yields and compositions of the products were determined. A batch of washed sludge was sent for research on obtaining ironcontaining raw materials for subsequent pyrometallurgical processing. With component ratio of 1:1, solid to liquid ratio of 4, temperature of 95 °C and duration of 2 hours, 6.3 kg of the mixture were processed, 6.58 kg of washed precipitate with a moisture content of 21.3 % and 12.6 dm3 of the final solution were obtained. The specific volume of water evaporation was determined to be 31.3 dm3/h per 1 m2 of pulp surface. Compositions of the precipitate iron (54.4 %) and the final solution (1.1 – 1.3 mg/dm3) were established, which indicates an almost complete accumulation of iron in the precipitate. Concentrations in the products of processing impurities were determined: silicon, aluminum, phosphorus, sulfur, sodium oxide and organics. According to the results, a technological scheme for the joint processing of red mud and oily mill scale was developed and ways of using the process products were outlined: sludge – for iron, filtrate – for industrial treatment, evaporated and wash water – for leaching. Using the example of cooperation between enterprises of the Kamensk-Uralsky Industrial Unit, the hardware process diagram is considered. It is advisable to use the data obtained to implement the technology, in particular, to develop technological regulations for the design of a pilot installation.

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Directions to Improve the Processing Methods of Anthropogenic Waste of the Ural Region

Cited by 4 publications

References 0 publications

Research to Develop a Promising Technology for the Joint Disposal of Man-made Wastes

Research to Develop a Promising Technology for the Joint Disposal of Man-made Wastes

Study of the Slag of Cyclone Smelting to Choose the Direction of Its Further Use

Technological modeling of joint leaching of oily rolling scale and red mud

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