National University of Science and Technology “MISiS” (Moscow, Russia):

S. A. Alimbaev, Graduate Student, e-mail: Alim407@mail.ru
A. V. Pavlov, Dr. Eng., Prof., Head of Diagnostic Laboratory

ERG Scientific and Engineering Center Ltd. (Aktobe, Kazakhstan):

M. S. Almagambetov, Cand. Eng., Head of Metallurgy Laboratory
N. Z. Nurgali, Cand. Eng., Chief Engineer

At present, many metallurgical enterprises pay special attention to ecology. The main wastes are slag, dust and sludge. The obtained slag is used as crushed stone for road construction, and dust caught by gas cleaning systems is partially returned to the process chain. The problem of waste generation and storage is relevant in the enterprises of JSC “TNK” Kazchrome”. Waste recycling, in addition to solving environmental problems, in some cases allows for additional positive eff ects, such as resource savings and additional profi ts. The main share of about 60% in the cost of smelting high-carbon ferrochrome is chromium ore. With the gradual reduction of the daughter-in-law of chromium ore with extrusion briquette, without disruption of the technological process, is the most attractive. Results of laboratory and industrial tests on extrusion of dust of ferrochrome production with application of polymer organic binder with their further melting in composition of ore suspension in ore-thermal furnace are given in the present paper. In cooperation with the specialists of J. C. Steele & Sons has been mastered by the experimental-industrial way of making extrusion briquette. Chemical compositions of the initial chromium-containing dust for the method of rigid extrusion, as well as the obtained metal and metallurgical slag are shown.

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