Studying the mechanical properties of iron ore concentrate briquettes

This paper studies the properties of metallurgical briquettes iron ore concentrate with coke screenings and liquid glass as a binder. The are produced by one-sided pressing in closed die mounted on plates vertical press force 100 kN. were carried out laboratory Spidermash LLC. following determined: density, impact strength compressive (for green dry briquettes). functional dependences mechanical 4 parameters plotted, namely charge mixture composition (the content coke), binder (liquid glass) percentage mixture, moisture compacting pressure. obtained experimental data approximated use multiplicative model, application least squares method. Various analytical models for describing behavior material to be briquetted studied. It is concluded that model provides more adequate description properties. quality multiple regression assessed adjusted coefficient determination. significance equation evaluated Fisher criterion, coefficients according Student. from screenings, presented form dependencies, necessary assess when designing briquetting process. For example, it take into account change yield during briquette transportation after briquetting. These also formulating solving problems pressing/briquetting finely dispersed materials, including screenings.