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Present status of gypsum resource
Release time:2016-12-29 15:53:32      Click times:1102

Natural gypsum is the natural reserves of gypsum stone, mainly dihydrate gypsum and anhydrite. China has abundant reserves of gypsum mineral resources, has proven reserves of various types of gypsum is about 57 billion tons, ranking first in the world, located in 23 provinces, municipalities and autonomous regions, of which more than 10 million tons of reserves are 10, followed by : Shandong, Inner Mongolia, Qinghai, Hunan, Hubei, Ningxia, Tibet, Anhui, Jiangsu and Sichuan, the gypsum resource is relatively poor in the northeast and east China.

China gypsum resources are mainly ordinary gypsum and anhydrite, which accounted for more than 60% of the total anhydrite, as a high-quality resources and a grade gypsum, accounting for only 8% of the total, including fiber gypsum only 1.8% . Therefore, we are gypsum reserves at the same time, but also the poor quality of gypsum reserves. High-quality gypsum resources are mainly distributed in Yingcheng and Jingmen of Hubei, Hunan Hengshan, Guangdong Sanshui, Shandong Zaozhuang, Shanxi Pinglu and other regions, some mining has been over-exploitation close to depletion, partly because of low-grade gypsum mixed difficult to create high quality resources waste. Therefore, China can actually extract and effectively use less than the proportion of high-quality gypsum resources.

Although China gypsum industry started late, the foundation is poor, but the rapid development of gypsum production in 1995 soared to 26.59 million tons, more than the United States, the world's first gypsum consumer. To 2004, the national gypsum ore production of more than 30 million tons, the total consumption of about 35 million tons of gypsum. China's existing plaster mining more than 500 mines, annual output of more than 100,000 tons of large and medium-sized mines about 50, its production accounts for 40% of total output, township small-scale mine production accounts for about 60% of total output. According to the mode of production, open mining accounts for about 30%, underground mining accounts for about 70%. Gypsum mine in the underground mining, for various reasons so that the average recovery rate of less than 30%, priority access to quality resources have not been a reasonable development and effective use of waste of resources, a serious, painful!

Natural gypsum is the most widely used dihydrate gypsum, the active ingredient is dihydrate calcium sulfate, calcium sulphate dihydrate content in general according to the grade of gypsum. Gypsum has a wide range of applications and a wide range of products. Different uses have different requirements for the quality of gypsum raw materials. High-grade gypsum is used in the production of special gypsum products such as edible, medical, art, model and chemical. Gypsum ore is less than 60% of dihydrate calcium sulfate content is less than the application; more than 60% of the gypsum ore, according to its different content, is used in building materials, construction and other fields.

The consumption structure of gypsum in different countries in the world is different. The gypsum consumption structure accounts for 45%, 45% and 10% of all the gypsum products in other developed countries. Developing countries are more emphasis on the primary application of ore, depending on the cement industry, gypsum products with the proportion of economic development has gradually increased. China's consumption structure is roughly: 84% for cement production retarder, 6.5% for ceramic mold, 4.0% for gypsum products, wall materials, 5.5% for the chemical industry and other industries; with China's cement production Of the gypsum products will have a great development space, all kinds of gypsum products and gypsum wall will be high-speed (high-speed) With the development of traditional ceramics and other special industries, the quality of gypsum resources is decreasing and the development and utilization of gypsum resource will be more and more important. Therefore, in order to ensure the sustainable development of the overall gypsum industry, green, environmental protection, health and gypsum building materials and products more widely used in people's lives, we must optimize the use of limited gypsum resources.

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