Gypsum is a monoclinic mineral and a hydrate primarily composed of calcium sulfate (CaSO4).It's a widely used industrial and building material.Recent years,China's gypsum industry developed fastly,especially in building gypsum industry.

一、China's Gypsum Resources Situation

China has abundant reserves of gypsum mineral resources, with proven gypsum reserves of approximately 70.43 billion tons, ranking first in the world.Gypsum ore including hard gypsum, ordinary gypsum, fiber gypsum.

Among them, China's gypsum resources are mainly ordinary gypsum and hard gypsum, with hard gypsum accounting for more than 60% of the total, but high-quality resources (special grade and first grade gypsum) only account for 8% of the total, and fiber gypsum is even rarer, accounting for only 1.8% of the total.

The quality of gypsum exists differences in different areas in China.Good quality gypsum ore is mainly used in high-end building materials and chemical industries, on the other hand, ordinary gypsum ore is mostly used in construction and cement production.

In China,the consuming construction of gypsum mainly influenced by economic development level and the adjustment of industral structure.Overall, gypsum has a wide range of consumption areas, but the specific proportion may vary depending on the year and market demand.

二、The Development and Utilization of Gypsum Mines

The mining methods of gypsum mines in China vary by region. Gypsum mines in western regions generally have thick coal seams and shallow burial depths, making them suitable for open-pit mining; The gypsum mines in the central and eastern regions are buried deeper, mostly in thin layers, and require underground mining, making it more difficult to extract.

三、How To Sorting the Gypsum Ore

Nowadays,in some small mining enterprises,manual sorting way still the only sorting way of gypsum ore.Workers sort different grades of gypsum ore and gangue based on the surface characteristics of the ore, such as color, shape, etc.

But now,the new photoelectric sorting tech from Mingde optoelectronics company will rebuild the sorting way of gypsum.The photoelectric sorting machine (color sorting machine, artificial intelligence sorting machine) converts the optical differences of ore into electrical signals through photoelectric conversion, and then controls the execution components (such as high-speed air valves) to separate useful ore and waste rock.

Thus,It has the advantages of high efficiency and accuracy, and its sorting effect far exceeds manual sorting.