Estimation of efficiency of hydrotransport pipelines polyurethane coating application in comparison with steel pipelines

Aleksandrov, V. I.; Kibirev, V. I.

doi:10.17580/or.2016.06.09

Cited by 3 publications

(4 citation statements)

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“…In the present study, SEC was calculated for transporting the highly-concentrated ( C w = 61.56%) coal–water slurry through a pipe bend ( r / D = 2.0) with and without the addition of an additive. The following relationships were used to determine SEC 12,22 …”

Section: Resultsmentioning

confidence: 99%

“…Several researchers 8–13 have studied the head loss characteristics of the flow of different types of slurries in slurry pipelines using pilot plant test loops. Verma et al.…”

Section: Introductionmentioning

confidence: 99%

“…Aleksandrov et al. 12 studied the efficiency of polyurethane-coated pipeline over steel pipeline. The operational cost of the pipeline was estimated from specific energy calculations.…”

Section: Introductionmentioning

confidence: 99%

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An experimental study on head loss characteristics of pipe bends for flow of coal–water slurry at high solid concentration

Singh

Kumar

Mohapatra

2019

Proceedings of the Institution of Mechanical Engineers, Part E:

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Bending of pipes is a major problem facing the engineers during the construction of a long pipeline for transporting coal–water slurry. However, the use of 90° bends in slurry transportation is restricted because it causes high head loss, and so very high pumping power is required to overcome this resistance. In this context, the present study is carried out to reduce the head loss for the flow of coal–water suspension across 90° pipe bends by varying bend geometry. Rheological experiments were performed to study flow characteristics of coal–water suspension with/without the additive. Coal–water slurry exhibits Newtonian behavior at a solid concentration of 30 wt% and pseudoplastic flow nature at concentration above 30%. Head loss experiments were carried out on a pilot plant test loop for a solid concentration of 30.27–61.56% with flow velocity ranging from 2 to 5 m/s. The r/ D ratio for the pipe bend varied within the range of 1.5–2.5. The present study reveals that the head loss across pipe bends increased as solid concentration and flow velocity was increased. The optimum r/ D ratio value for a minimum head loss was found to be 2.0. Also, significant decreases in apparent viscosity and head loss were perceived with the addition of a small amount of sulfonic acid. Power required to pump coal–water slurry was decreased by 15.93% with the use of an additive. A correlation for the head loss in terms of solid concentration, flow velocity, and r/ D ratio was also developed.

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Section: Resultsmentioning

confidence: 99%

“…Several researchers 8–13 have studied the head loss characteristics of the flow of different types of slurries in slurry pipelines using pilot plant test loops. Verma et al.…”

Section: Introductionmentioning

confidence: 99%

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An experimental study on head loss characteristics of pipe bends for flow of coal–water slurry at high solid concentration

Singh

Kumar

Mohapatra

2019

Proceedings of the Institution of Mechanical Engineers, Part E:

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“…Результаты. Опытно-промышленная установка для проведения испытаний гидротранспорта была смонтирована работниками ПНС-I ЦХХ (рис.5) [2,9].…”

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ГИДРОТРАНСПОРТ СГУЩЕННЫХ ХВОСТОВ ОБОГАЩЕНИЯ ЖЕЛЕЗНОЙ РУДЫ НА КАЧКАНАРСКОМ ГОКе ПО РЕЗУЛЬТАТАМ Опытно-Промышленных ИСПЫТАНИЙ СИСТЕМЫ ГИДРОТРАНСПОРТА

Aleksandrov¹,

Васильева²

2018

PMI

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В качестве объекта исследования выступает система гидротранспорта хвостов обогащения железной руды на АО «ЕВРАЗ Качканарский ГОК». Целью работы являлось определение параметров гидравлического транспорта хвостов обогащения железной руды при массовых концентрациях твердой фазы от 30 до 70 % и разработка рекомендаций для промышленной эксплуатации систем гидротранспорта высоконцентрированных пульп ЦХХ Качканарского ГОКа. Проведены лабораторные исследования параметров гидротранспорта сгущенных хвостовых пульп с разработкой методики расчета; опытно-промышленные испытания гидротранспортной системы в условиях ЦХХ Качканарского ГОКа. Установлено, что при использовании полиуретановых покрытий внутренней поверхности пульповодов значительно (в 1,75 раза) снижаются удельные потери напора на гидротранспорт сгущенных смесей. Это позволяет значительно увеличить дальность транспортирования для укладки хвостов обогащения в дальние участки хвостохранилища. Внедрение результатов исследований – в проекте реконструкции и развития хвостохранилища ЦХХ Качканарского ГОКа на период 2018-2020 гг. Предлагается использовать результаты работы в проекте реконструкции системы гидротранспорта в ЦХХ Качканарского ГОКа путем перехода на гидротранспорт гидросмесей, сгущенных до массовых концентраций 35-40 % в пульповодах с внутренним полиуретановым покрытием, что обеспечит энергосбережение в технологическом процессе гидротранспорта.

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Modelling the movement of slurry in the channel of a nature-like pump used for the safety laying of the worked out space

Vasilyeva

Yusupov²,

Nagornov

et al. 2021

J. Phys.: Conf. Ser.

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The most important task of the production of the mineral raw materials industry is to increase the efficiency of the equipment and infrastructure in operation. In particular, this also applies to the need to create transport systems with high productivity while reducing the cost of transporting mineral raw materials and waste from its processing. Particular attention is paid to the use of hydraulic filling systems as a measure to prevent man-made tectonic earthquakes during prolonged and continuous development of deposits. In this paper, we consider the problem aimed at solving the fundamental problems of developing effective methods for controlling the flow of pasty substances in pipelines of variable cross-section, intended for the production of pumping equipment and used in such industries as mining, chemical, food, etc.

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Estimation of efficiency of hydrotransport pipelines polyurethane coating application in comparison with steel pipelines

Cited by 3 publications

References 0 publications

An experimental study on head loss characteristics of pipe bends for flow of coal–water slurry at high solid concentration

An experimental study on head loss characteristics of pipe bends for flow of coal–water slurry at high solid concentration

ГИДРОТРАНСПОРТ СГУЩЕННЫХ ХВОСТОВ ОБОГАЩЕНИЯ ЖЕЛЕЗНОЙ РУДЫ НА КАЧКАНАРСКОМ ГОКе ПО РЕЗУЛЬТАТАМ Опытно-Промышленных ИСПЫТАНИЙ СИСТЕМЫ ГИДРОТРАНСПОРТА

Modelling the movement of slurry in the channel of a nature-like pump used for the safety laying of the worked out space

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