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ArticleName Filtration process modeling for aluminium-bearing hydrochloric acid pulp
DOI 10.17580/tsm.2017.10.07
ArticleAuthor Balmaev B. G., Kirov S. S., Ivanov M. A., Pak V. I.

A. Baikov Institute of Metallurgy and Materials Science, Moscow, Russia:

B. G. Balmaev, Leading Researcher (Laboratory of Physical Chemistry and Technology of Aluminium), e-mail:


National University of Science and Technology MISiS, Moscow, Russia:
S. S. Kirov, Assistant Professor (Chair of Non-Ferrous Metals and Gold), e-mail:
M. A. Ivanov, Post-Graduate Student (Chair of Non-Ferrous Metals and Gold), e-mail:
V. I. Pak, Post-Graduate Student (Chair of Non-Ferrous Metals and Gold), e-mail:


Our article describes the process of filtration of aluminum-bearing hydrochloric acid pulp after kaolin clay leaching with hydrochloric acid. A complex probabilistic and deterministic model of the filtration process is constructed taking into account the influence of the leaching factors of kaolin clay. The productivity and rate of filtration were studied, depending on hydrodynamic and physicochemical factors. We found the particular dependences of the filtering efficiency from process temperature (Y1), material size (Y2), polyacrylimide amount (Y3) and acidity factor (Y4). The system temperature and polydispersity make a biggest effect on hydrochloric acid pulp filtering. The mathematical model of the filtering process, obtained after the correction of the Protodyakonov equation by the Rayleigh distribution, was used to optimize and predict the process. By changing the initial conditions of kaolin clay leaching, it is possible to predict the performance of the filtration process outside the studied interval, where the experimental verification is economically inexpedient. The best filtration conditions for hydrochloric acid pulps obtained after kaolin clay leaching are: temperature — 70 oС, material size (residue on sieve 008) — 10%, polyacrylimide amount — 30 mg/l, acidity index — 1.3. Calculations, carried out with the model, defined that, using these parameters, the filtration productivity reaches a maximum value of 205.9 kg/(m2·h), and the experimental result using these conditions is 200.3 kg/(m2·h).
This work was carried out with the financial support from the Ministry of Education and Science of Russian Federation within the fulfillment of the subsidiary agreement on 02 November 2015 No. 14.581.21.0019 (unique identifier: RFMEFI58115X0019).

keywords Filtration, kaolin clay, hydrochloric acid leaching, mathematical model, partial dependencies, polydispersity, gel formation, filtration performance

1. Malyshev V. P. Probabilistic and deterministic image. Karaganda : Gylym, 1994. 370 p.
2. Protodyakonov M. M., Teder R. I. Method of rational planning of experiment. Moscow : Nauka, 1970. 74 p.
3. Zhuzhikov V. A. Filtration. Theory and practice of suspension separation. Moscow : Khimiya, 1980. 400 p.
4. Suss A. G., Damaskin A. A., Senyuta A. S., Panov A. V., Smirnov A. A. The influence of the mineral composition of low-grade aluminum ores on aluminum extraction by acid leaching. Light Metals. 2014. pp. 105–109.
5. Senyuta A. S., Panov A. V., Damaskin A. A., Smirnov A. A. Study of filtration and washing of residue after HCl leaching of kaolin clay. Light Metals. 2015. 20 February. pp. 127–130.
6. R. Iler. The chemistry of silica. Moscow : Mir, 1982. Vol. 1, 2. 1127 p.
7. Chukin G. D. Chemistry of surface and construction of disperse silica. Moscow : LLC “Printa”, 2008. 172 p.
8. Seri O. Polarization curve and its analysis of aluminum in aluminum chloride solution. Zairyo to Kankyo. Corrosion Engineering. 2013. Vol. 62, No. 12. pp. 488–494.
9. Balmaev B. G., Tuzhilin A. S., Shebalkova A. Y., Rozhkov D. Y. Some physicochemical properties of aluminum and iron chloride solutions. Russian Metallurgy (Metally). 2016. No. 11. 1 November 2016. pp. 1087–1091.
10. Likhoded A. D., Zapolskiy A. K., Sazhin V. S. Sulfuric acid processing of high-silica aluminium raw materials. Sumy, 1972. pp. 146–155.
11. Ivanov V. V., Kirik S. D., Shubin A. А., Blokhina I. A., Denisov V. M., Irtugo L. А. Thermolysis of acidic aluminum chloride solution and its products. Ceramics International. 2013. Vol. 39, No. 4. pp. 3843–3848.
12. Layner A. I. Alumina production : tutorial. Moscow : Gosudarstvennoe nauchno-tekhnicheskoe izdatelstvo literatury po chernoy i tsvetnoy metallurgii, 1961. 620 p.
13. Layner Yu. A. Complex processing of aluminium-bearing raw materials by acid methods. Moscow : Nauka, 1982. 208 p.
14. Zapolskiy A. K., Baran A. A. Coagulants and flocculants in water purification processes. Leningrad : Khimiya, 1987. 208 p.
15. Zapolskiy A. K. Sulfuric acid processing of high-silica aluminium raw materials. Kiev : Naukova dumka, 1981. 208 p.
16. Balmaev B. G., Tuzhilin A. S., Kirov S. S., Shebalkova A. Yu. Mathematical modelling and optimization of aluminium hydroxychloride obtaining process. Tsvetnye Metally. 2017. No. 3. pp. 57–62.

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