Development of technology for water concentration of brown coal without use and use of red waste in this process as a raw material for colored glass in the glass industry

The Angren coal mine has 2 billion tons of reserves of various grades of lignite that can be used as fuel, of which 2BR-B2 and 2BOMSSh-B2 lignite grades, which have 2 million tons of reserves, remain unusable due to poor quality and low combustion heat. [1]. To improve the quality of these coals, water treatment technology has been developed. Technological schemes, gravitational flotation methods were studied. The ash content of coal was reduced, and the heat of combustion was increased. Scientific results have been obtained to apply the mixture as a technological waste in the glass industry. In particular, the properties of raw materials for brown tara bottles were studied. The brown glass was obtained by adding the resulting mixture as a technological waste, and its properties were studied