Innovative Screens for Building Materials Industry

Along with the crushing units, vibrating screens are key process equipment for producing the crushed stone. The quality of the finished product and also the economy of the production process depend on the perfection of their designs, reliability, and repairability. REC “Mekhanobrtekhnika” develops and produces a wide range of vibrating screens with different designs of boxes, vibration exciters, and sifting surfaces. A standard series of universal inertial screens of GIS type with circular trajectory of vibration of a screen box with an adjustable level of accelerations amplitude in the range of 2.5–5 g is presented. A vibration exciter of a block type, the use of which makes it possible to choose the optimal technological mode of the screening process and provide the possibility to efficiently separate the hardly screened and wet materials, is described. An example of the substitution of imported screens with the screens GIS-54 and GIT-72 at the enterprise “Granit-Kuznechnoye” (“LSR-Base Materials-North-West”), which reliable and efficiently operate several years already, is presented.

L.A. VAYSBERG¹, Doctor of Sciences (Engineering), Academician of RAS,
A.N. KOROVNIKOV¹, Candidate of Sciences (Engineering);
T.M. BALDAEVA², Engineer 

¹ Research and Engineering Corporation “Mekhanobr-Tekhnika” (3, 22nd line, V.O., 199106, St. Petersburg, Russian Federation) 
² Saint Petersburg Mining University (2, 21st Line, V.O., 199106, St. Petersburg Russian Federation)

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4. Vaysberg L.A., Korovnikov A.N., Trofimov V.A. Modern screens of the Mekhanobr-Tekhnika research and pro- duction corporation for the building materials industry. Stroitel’nye Materialy [Construction Materials]. 2006. No. 12, pp. 26–28. (In Russian). 
5. Vaysberg L.A., Korovnikov A.N. New screens for the preparation of mineral raw materials. Marksheideriya i nedropol’zovanie. 2011. No. 6, pp. 26–27. (In Russian).