High Quality Anthracite

Anthracite deposits suitable for mining are located underground in coalfields in southwest China. Before extraction, geologists use surveying techniques to precisely locate seams of high quality anthracite.

Longwall mining is employed, using mechanical excavators and coal cutters to extract the coal. The raw coal is quickly transported to the surface on conveyor belts after excavation.

The raw coal first undergoes sorting using screening equipment. Near infrared spectrometry rapidly analyzes the carbon, volatile matter and ash content in the coal to select high-grade lumps with a high carbon composition, low volatile matter and minimal ash.

The selected lump coal is cleaned to remove any surface mudstone and impurities. It is then crushed into grains sized 15-50 millimeters using an anthracite separator.

The granulated coal enters a drying and processing system. Hot air is applied to dry it and reduce the moisture content below 8%. A classifier further separates sizes and winnowing machines remove residual ash.

The anthracite grains are rigorously tested on site to cull any substandard or off-specification granules. Qualified anthracite is compressed into bags weighing approximately 15 kilograms each, printed with results of compositional analyses and enclosed in moisture-proof plastic.

Primary warehouses provisionally store the compliant anthracite coal grains. Permanent storage facilities maintain supplies according to grading standards for long-term stability of quality.

Strict quality control ensures over 99% of each anthracite batch meets regulations, representing industry-leading performance. With such refined mining and processing, premium grades of anthracite coal can be supplied stably and affordably.

Hangzhou Xinkai Water Treatment Equipment Co., Ltd. is a water treatment equipment company that integrates design, production, installation, and consulting services. Its production base is located in the Changxing National Green Manufacturing Industrial Park, adjacent to the Hangyi Expressway, with convenient transportation.

With the development of the entire national economy, our factory has also continued to grow. It now covers an area of more than 3000 square meters and is equipped with automatic submerged arc welding machines, multiple cranes, sandblasting machines, punching machines, shearing machines, turntables, forklifts, rocker drills, sawing machines and a series of other equipment to meet the production of various standardized products.