I. Sulfur (including natural sulfur, pyrite, iron ore associated sulfur)
According to the Ministry of Chemical Industry data, the 1996 National sulfur standard mineral an amount of 1 7,286,000 t, where the chemical system 6.763 million t, colored system 2.449 million t, petroleum, coal and township yield 8.074 million t. There are sulfur mine enterprises in 28 provinces ( districts ) across the country . The main producing areas are: Inner Mongolia, Jiangsu, Anhui, Guangdong, Jiangxi, Liaoning, Shaanxi, Gansu, Shanxi and other provinces ( districts ) . Sulfur mine products are mainly used to produce sulfuric acid, and China has become the world's second largest producer of sulfuric acid.
Second, phosphorus ore Â
China has 17 provinces (cities, districts) mining phosphate rock, but phosphorus production is concentrated in Hubei, Yunnan, Guizhou, Sichuan and Hunan province five phosphorus resources. In 1996 China phosphate rock mine production of standard amount of 1 9,390,400 t, output ranked second in the world. At present, Yunnan Kunyang, Guizhou Kaiyang, Yufu, Hubei Jingjing, Yichang, Baokang, Sichuan Jinhe -Qingping phosphate mine base have been built. 95% of the phosphate concentrate is used to make phosphate fertilizer. China's fertilizer production has reached the second place in the world, and synthetic ammonia ranks first in the world. Yunnan Province will be built as a national chemical base.
Third, potassium salt
 China's potash mineral resources are poor, and the main producing areas are in marginal areas, which have certain impact on development and utilization. National KCl production of 250,000 t. There are 8 potash mines that have been developed and utilized , and there are 3 mines in China. The main mining areas that have been developed are the Chaerhan Potassium Salt Mine in the Qaidam Basin of Qinghai and the Kanye Well Potash Mine in Jiangcheng, Yunnan. Potassium salt is mainly used to make fertilizer, used alone as potassium fertilizer, or mixed with nitrogen and phosphorus to make compound fertilizer. China's potash production is 1% of world production , and its share is small.
Fourth, boron ore
1996 Chinese boron capacity (standard ore off B2O312%) of about 878 000 t / a, where state mines 251 000 t / a, small towns ore 627,000 t / a. The mines are mainly concentrated in Liaoning Province, Jilin Province and Hunan Province. 1996 marked mineral boron amount to 1,313,900 t, mainly for the production of borax and boric acid, and a glass, fiber glass and enamel industries.
Five, salt mine
According light industry department statistics, the total Chinese crude salt production capacity of 1996 is 3 8.877 million t, production was 2 9,324,000 t, where sea salt (including coastal Shandong underground brine production of salt) 1 9923000 t , mineral salt to 6,377,000 t, salt Lake is 2,286,000 t, liquid salt is 738,000 t. The provinces that produce well minerals include Jiangsu, Jiangxi, Hubei, Sichuan, and Yunnan; the provinces and autonomous regions that produce lake salt include Inner Mongolia, Qinghai, and Xinjiang; and the provinces ( autonomous regions and municipalities ) that produce sea salt include Liaoning, Tianjin, Hebei, and Shandong. Jiangsu, Zhejiang, Fujian, Guangdong, Hainan, Guangxi, etc. China's salt production ranks second in the world. The products are divided into two categories, edible salt and industrial salt, which are extremely important chemical raw materials.
6. Glauber's salt
In 1996 , there were 59 mining areas in China , which were mainly distributed in Xinjiang, Shanxi, Inner Mongolia, Sichuan and Gansu provinces and autonomous regions. Shanxi Yuncheng Salt Lake is the main producing area of ​​sodium sulphate and its products in the country. In 1996 China anhydrous sodium sulfate (anhydrous sodium sulphate, Glauber's salt water) yield 2582 million t, the distribution in Sichuan, Gansu, Shanxi, Xinjiang, Inner Mongolia and other provinces and autonomous regions;. Glauberite mainly produced in Sichuan, Qinghai, Hunan and Yunnan and other provinces.
Seven, barite
The barite production mines are mostly township small mines. There is still no management department and no accurate statistics. China barite production capacity totaled about 1.045 million t / a, of which seven state-owned mines total production capacity of about 511,000 t / a. According to the Ministry of Geology and Mineral Resources Mining Authority statistics, in 1996 China barite production of about 3 million t, of which state-owned enterprises 320 000 t, a small mining town about 270 million t. In addition to raw ore and mineral processing concentrates, there are also processed products such as barium carbonate, barium chloride, barium sulfate and etc.
Plate And Tube Integrated Cutting Machine
1. Plate and tube processing, one machine for two purposes, saving space
2. High-load mechanical structure bed, stable processing and high precision
3. Customized laser generator with small slits and less energy consumption
4. Full stroke chuck, tube diameter up to 220mm
5. Short tail material, cost saving
6. The X-axis frame beam is annealed to eliminate internal stress. After rough machining, vibration and aging are carried out before finishing to ensure the rigidity and stability of the moving parts of the cutting head.
7. The bed is equipped with high-quality linear guides, driven by servo motor, high-quality rack and pinion, so that the Z-axis slide plate can achieve reciprocating motion in the X direction.
8. In the process of movement, the limit switch controls the stroke to limit the limit, and there are elastic buffer pads at both ends to limit the mechanical limit to ensure the safety of the system operation.
9. Machine base: frame structure welded with high-quality pipes, professional welding, secondary aging treatment, and precision machining by large-scale gantry milling machines. These design and processing methods ensure that the machine tool has excellent shock resistance, high rigidity and stability.
10. A dust cover is installed on the guide rail to prevent dust debris from falling into the guide rail to affect the movement, keeping clean and smooth movement.
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