A technological complex has been developed to remove clay minerals, iron oxide and fractions heavier than 2.9 t / m3 from glass quartz sands. The basis of the circuit diagram of the apparatus of the complex is a drum screen of a new design, jigging machines and concentration tables with electromagnetic inductors. In laboratory conditions, it was shown that from sands containing by weight: 97.32% SiO 2 , 0.92% Al 2 O 3 , 0.43% Fe 2 O 3 , 0.11% TiO 2 , 0.04% Cr 2 O 3 , sand was obtained by the most demanded industry grade ВС-030-В. A distinctive feature of the technological scheme of gravity separation of sands is the countercurrent movement of the initial feed and heavy fraction
The features of designing a line of return cullet formed at the "hot" and "cold" ends in the production of glass containers are considered. Various options for the layouts of technological equipment designed for glass waste disposal are presented. The operation of the equipment used for cullet crushing is analyzed, and some technical solutions for the storage of cullet and its dosing are given.
A granular heat-insulating glass-crystalline material and a technology for its production based on broken glass modified with fusible and inorganic additives have been developed. Research has been carried out on the influence of the main physical characteristics of the charge components on the pore formation process. Based on the research results, the main parameters have been established that affect the stability of the molten glass foaming process. An automatic control system for the technological process of firing granular glass-ceramic material has been developed.
The modern methods of fine grinding and air classification of materials by dry method are presented, providing accurate particle size limitation, as well as clean processing of the original product without impurities. The special wear-resistant design of the working units allows for fine grinding and classification of even the hardest materials, including up to 10 units on the Mohs scale.
Some systems for cleaning conveyor belts are considered and factors influencing the efficiency of cleaning and operational reliability of cleaning devices are determined. Improvements are proposed for scraper and screw cleaners designed to remove abrasive and strongly adhering raw materials from the idle strand of the belt.
