Overview of Beneficiation Technology in Sulfur Mine Concentrator

The Lianyungang Design Institute of the Ministry of Chemical Industry conducted an intermediate test of the flotation method on the 1t/d scale of the mining area. The test results show that the main minerals in the mining area are: natural sulfur , gypsum , quartz , chalcedony and so on. The intermediate test used a mixture of four types of ore as the research object, containing 52% sulfur, flotation fineness -200 mesh 84.84%, and flotation concentration 22%. Adding 2kg/t water glass and 2 # oil 18g/t gave 83.89% sulfur concentrate, and the recovery rate was 94.62%.

In addition to the natural sulfur ore tailings after refining sulfur, from about 15% sulfur, coal plus oil 83.35g / t dressing, available sulfur crude concentrate of 61.23%, 72.08% recovery.

Beneficiation process of Liuhuangshan Gangou sulfur ore dressing plant in Tianjun County, Qinghai Province

Sulfur ore is a basic chemical raw material. In nature, the sulfur was widely distributed, very strong affinity for non-metallic elements, it is natural sulfur, hydrogen sulfide, metal sulfides and sulfates and other forms exist, and form various types of sulfur deposits. China's sulfur resources are very rich, and reserves are among the highest in the world. China in the current and future for quite some time, will remain associated with pyrite and sulfur iron ore as the main source of sulfur. Foreign sulfur is currently mainly from natural gas , petroleum and natural sulfur.

There are not many examples of natural sulfur ore dressing. The main constituent minerals are: natural sulfur, gypsum, quartz, chalcedony and so on. In addition, the tailings residue after refining sulfur of natural sulfur ore is about 15% sulfur, 83.35g/t of kerosene is added, and 61.23% of crude concentrate with sulfur is obtained, and the recovery rate is 72.08%.

China has been using sulfurite for thousands of years and is one of the first countries in the world to use sulfur.

The name of Chinese sulfur evolved from the so-called "stone flow yellow" in the 6th century BC. The characteristics of sulfur have been familiar in the Western Han and Eastern Han Dynasty. In 808, "The Secret of Taihang Shengzu Jindan" contains black explosives containing sulfur and nitrate as main components. In Li Shizhen's "Compendium of Materia Medica" in the Ming Dynasty, the name, origin, nature and medicinal functions of sulfur were systematically studied. In the "Tiangong Kaiwu" written by Song Yingxing in the late Ming Dynasty, the technique of using pyrite as raw material to burn sulfur was described in detail. This is at least 200 years earlier than the use of pyrite in Europe and the United States. Due to the need of arms in the Qing Dynasty, the production and sale of sulfur was controlled by the state. In some provinces, the inventory of sulfur was hundreds of tons. It can be seen that sulfur production has reached a certain scale.

The study of natural sulfur geology began between 1894 and 1900. Japan Yokoyama Lang, who had strong views China Taiwan Datun, Kameyama Ilan village and other places of natural Sulfur been studied in 30 to 40 years of this century, Chinese scholars Tan Tin domain, Li Chunyu, the Neo-lun, who were Geological surveys were carried out on a few natural sulfur deposits such as Guanyin Pavilion in Ganzi, Sichuan, Dameng in Qinghai, and Santaipo in Baoshan, Yunnan. Akasaka Ayan and others conducted geological surveys on natural sulfur plants in Wudalianchi and Qinghai Wuyuan, Heilongjiang Province.

In 1917, Liang Jin's investigation of the Dongxi Village mine in Xiapu County, Fujian Province and the records of the pyrites in Chong'an, Zhenghe, Xiapu and Ningde in Fujian Minerals were the earliest pyrite geological data. From 1923 to 1928, Wang Yushan conducted a geological survey of pyrite in Shandong Zhaoyuan, Hebei Xuanhua Huzhuang, Zhejiang Songyang, Lishui and Qingtian. From 1930 to 1933, Wang Xiaoqing and Tian Qi were in Changsha, Xiangtan and Qixian, Hunan. In 1932, Xu Ruilin and Jiang Rong were in Guangdong Yunfu Shuangbai. In 1933, Hou Defeng, Wang Yulun and Zhang Zhaoyu made their work in Xiamen, Longyan and other places. In the survey of geology and mineral resources, the pyrite resources have been studied and reported to varying degrees. In 1945, Chen Bingfan made a comprehensive exposition of China's pyrite resources in the "Chinese Sulphur Mines" and proposed a pyrite deposit classification method, pointing out that pyrite is mainly produced in Sichuan, Hubei, Henan and Hunan. And other provinces.

After the founding of the People's Republic of China, China's sulfur mine geological work has developed rapidly, and successively discovered large and medium-sized deposits such as Anhui Xiangshan, Inner Mongolia Dongshengmiao, Tanyaokou, Guangdong Dayingping, and a large number of small and medium-sized deposits associated with non-ferrous metals. Pyrite deposit. In addition, great achievements have been made in the evaluation of natural sulfur and acidic natural gas.

Because China's pyrite resources are particularly rich and widely distributed, and China's oil is mostly low-sulfur oil, acid natural gas is only in the gas field in Weiyuan, Sichuan. Therefore, the development of China's sulfur source and the world are oil, gas, sulfur and natural. Sulfur is a major source of sulfur. China has been using pyrite as its main development target, and there will be no fundamental changes in the near future. In order to meet the needs of agriculture for fertilizers and other parts, during the "Sixth Five-Year Plan" and "Seventh Five-Year Plan" period, Guangdong Yunfu, Inner Mongolia Charcoal Kiln, Anhui Xiangshan, Sichuan Zhoujia, Hunan Qibaoshan, Chengbu and Shanxi Yangquan were newly built and expanded. Such as a large number of large and medium-sized mines, the production capacity of pyrite is greatly increased. At present, the five major pyrite mine production bases in Guangdong, Sichuan, Anhui, Inner Mongolia and Shanxi have been formed, and the Guangdong Yunfu Pyrite Mine with a production capacity of 3 million t/a is the largest pyrite mine in China.

In order to meet the needs of agriculture for fertilizers and other parts, during the "Sixth Five-Year Plan" and "Seventh Five-Year Plan" period, Guangdong Yunfu, Inner Mongolia Charcoal Kiln, Anhui Xiangshan, Sichuan Zhoujia, Hunan Qibaoshan, Chengbu and Shanxi Yangquan were newly built and expanded. Such as a large number of large and medium-sized mines, the production capacity of pyrite is greatly increased. At present, the five major pyrite mine production bases in Guangdong, Sichuan, Anhui, Inner Mongolia and Shanxi have been formed, and the Guangdong Yunfu Pyrite Mine with a production capacity of 3 million t/a is the largest pyrite mine in China.

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