There have been more than 30 mica mines in China that have been mined and utilized. The main producing areas are: Xinjiang Altai Muscovite Mine, Sichuan Danba Muscovite Mine, Inner Mongolia Tugui Wula Muscovite Mine, Shaanxi Danfeng Muscovite Mica Mine, Jilin Ji'an Phlogopite Mine, Henan Zhenping Phlogopite Mine and Hebei Quyang Muscovite Mine, etc.
Most of them produce crushed mica and its products while producing industrial raw materials. Some metallurgical companies also recover fine mica from mineral processing tailings and supply it to the market.
Xinjiang Non-Metallic Mining Company, Sichuan Danba Mica Mine, Ya'an Mica Factory and Inner Mongolia Tugui Wula Mica Mine produce mica powder and mica products. Sichuan Ya'an Mica Company produces mica paper, which is used by more than 350 companies in 27 provinces and cities across the country. The products are also trial-sold abroad. Xinjiang Mica No. 1 Factory produces high-temperature resistant mica plates. Manufacturers of mica powder include Ya'an Mica Factory, Hebei Lingshou and other places. In addition to meeting domestic demand, the products can also be exported. 1. Low comprehensive utilization rate: In the comprehensive utilization of muscovite, foreign countries have achieved no waste in factories and 100% utilization of raw materials. The comprehensive utilization rate of muscovite in China is about 40%, and its application areas need to be expanded.
2. Narrow application fields: In recent years, the comprehensive utilization field of muscovite mica has been continuously expanded, and has achieved good applications in the fields of building materials, shockproof, lubrication, organic and inorganic composite materials, sealing materials and other fields. There are 10 categories and more than 100 varieties of comprehensively processed products. China's application fields are relatively narrow. From the general trend, due to the success of artificially synthesizing large muscovite crystals, the world's demand for large muscovite mica will gradually decrease, so the mining volume of natural large muscovite mica will decrease year by year. However, demand for fragmented muscovite will continue to increase. The existing high-quality muscovite in the world is far from meeting the needs, and the development of synthetic muscovite is accelerating.
The current consumption structure of muscovite has changed. It is estimated that the world's demand for sheet mica will continue to decline at an annual rate of 4.6%, while the demand for crushed mica will continue to decrease at an average annual rate of 1.5%. The speed continues to increase.
Muscovite comprehensive utilization products - mica paper, wet-ground mica powder and mica deep-processing products are all best-selling products in the international market.
The demand for mica for electron tube feed sheets remains balanced, and capacitor chips and thick mica sheets for outer shells are basically saturated. Natural sheet mica is generally replaced by substitute materials. However, as products for the comprehensive utilization of muscovite, mica paper and mica powder as well as deeply processed products such as mica insulation products, mica paper electrical appliances, etc. have begun to sell well.
(1) The machinery department of the mica paper market has long determined that mica paper is mainly used as muscovite insulation material for motors instead of mica flakes. In 1987, China's new power generation equipment capacity was 9.2 million kilowatts. Normally, assuming that 100,000 kilowatts of new power generation capacity requires 5 tons of mica paper, approximately 460 tons of mica paper are needed. China's energy industry will be the focus of development in the future. During the "Seventh Five-Year Plan" period, it plans to achieve an annual production capacity of 10 million kilowatts of generating units. It will require no less than 500 tons of mica paper every year, and more than 2,500 tons of mica paper will be needed every year. In addition, China's installed power generation capacity reached 100 million kilowatts in 1987. If we consider replacement and maintenance in 20-30 years, the mica paper required for maintenance is also considerable. In addition, there are many industrial and household appliances that also require a large amount of insulating cardboard and other products. The domestic mica paper market has a bright future.
(2) Mica powder market China’s production of welding rods requires about 15,000 tons of mica powder every year, 140,000 tons of mica powder for linoleum paper, and about 2,000 tons of mica powder for fire-fighting equipment. In addition to the newly developed In the field of mica powder application, judging from the development trend, the demand for mica powder may further increase.