PELLETIZING OF FINE CHROME RAW MATERIALS WITH POLYMER BINDERS

"The article presents the results of laboratory studies on agglomeration of gas cleaning sludge mixed with rich dust from inertial collectors and dust after drying chrome ore. The technological process of pelletizing, which consists of: preparation of raw materials for pelletizing (crushing, classification, drying and mixing of components), pellet processing operations for the purpose of separating fines and strengthening. In this work, polymeric binders act as binders: cement, clay powder for chrome pellets, organic binder ligno and polymer binder, which is a polymer based on acrylic acid amide and an inorganic binder. Different types of binders, each of which has specific requirements. Several types of basic materials and binders, to determine the optimal recipe for pelletizing fine-grade ore raw materials, humidity and cold agglomeration modes. Qualitative and quantitative indicators of the obtained agglomerated products are estimated. The optimal composition of the mixture for agglomeration has been formulated. The results of measuring the mechanical properties have been obtained, tables for drop, impact and abrasion are provided, as well as drawings of the results of pelletized materials. The factors influencing the quality of pellets have been determined. Keywords: Pelletization, binder, wet dust, drying, pellets, sludge, granulator.