This super-large phosphate mine comes from the mining area near the weir in Baokang County and belongs to Hubei Yaozhihe Chemical Co., Ltd. (hereinafter referred to as "Yaozhihe Company"). The company is a joint-stock enterprise in Yaozhihe Village, and has jurisdiction over more than ten enterprises, including six phosphate rock production enterprises, two chemical production enterprises and five hydropower stations. Today, only one phosphate rock production has formed an annual production and sales scale of 2.5 million tons of phosphate rock and 50,000 tons of fine phosphorus chemical products, with an annual output value of 65.438+0.2 billion yuan.
Resources are the foundation of mining development. 20 12, 12 In June, Yaozhihe Company obtained the prospecting right for the first time in the form of bidding, and then entrusted Hubei Geological Exploration Institute of Sinochem Bureau of Geology and Mineral Resources (hereinafter referred to as "Hubei Geochemical Exploration Institute") to carry out prospecting work here, providing a backup development base for the enterprise.
Since 20 12, Hubei Institute of Chemical Exploration has organized engineers and technicians to conduct comprehensive research and preliminary investigation. Based on the summary of the mineralization law of phosphate rock in the phosphate rock accumulation area in western Hubei and the analysis of previous prospecting results, and through communication with enterprises, the area near the weir was optimized for prospecting, and the general survey, supplementary survey and detailed investigation of the mining area were completed successively.
"In the mining area near the weir, the reserves of phosphorus resources submitted by us are 590 million tons, and the average content of phosphorus pentoxide is 23.54%, of which 43.487 million tons are Grade I products, with an average content of 3 1.80%. The control scale is 5800m×2800m, and the thickness of a single phosphate body is about 12m. Speaking of this achievement, Tang Congshou, the chief expert of the project, is full of pride.
Abundant phosphorite resources have laid a foundation for Yaozhihe Company to carry out mine design as soon as possible, and transform resources into practical productivity of enterprises, and also provided resource support for Baokang County to get rid of poverty and become rich. What's more gratifying is that this achievement was selected by geological society of china as one of the "Top Ten Prospecting Achievements in 20 19".
Tang Congshou said that this achievement has obvious double benefits.
From the perspective of stimulating local economic and social development, the results have increased the stamina of county economic development in Baokang County. The county is a key poverty alleviation and development county in the contiguous poor areas of Qinba Mountain, adjacent to Shennongjia forest area. Although Baokang County withdrew from the ranks of poor counties in 20 19, it did not give much support to the county economic development. In addition to using abundant hydropower resources to develop small hydropower, phosphate rock development and phosphating industry are still the most important pillars of the county's economic development. Today, the processing capacity of phosphate ore in this county has reached more than 6.5438+0 million tons, and the conversion capacity has reached more than 500,000 tons.
From the perspective of ensuring food security, this achievement has enhanced China's short-distance and low-cost phosphate fertilizer supply capacity, which is conducive to increasing China's grain production and income. For a long time, the main grain producing areas are not suitable to be concentrated in the central and eastern regions. However, China's phosphorus resources are mainly concentrated in southwest areas such as Yunnan, Guizhou and Sichuan. Transporting phosphate fertilizer from these areas to the main grain producing areas in the central and eastern regions will not only increase the transportation cost, but even delay the agricultural season because of the untimely transportation, which will affect the grain output in the current season.
Therefore, from the perspective of ensuring national food security, Hubei Province has long listed phosphate rock as a strategic mineral resource in the province. While strengthening the integration of phosphorus resources and improving the level of intensive utilization of phosphorus resources, the overall planning for prospecting in the eastern and deep parts of Yichang phosphate mine has also been increased. By the end of 20 19, Hubei province had invested 800 million yuan in phosphate ore prospecting through funds and enterprises, and accumulated 3.2 billion tons of new phosphorus resources, which made the reserves of phosphorus resources rise to the first place in the country and ensured the demand for phosphate fertilizer in the "central granary" of grain production in China.
In the eyes of people in Yaozhihe village, this super-large phosphate rock means rich income; In the eyes of geologists, this achievement embodies the power of scientific and technological innovation.
Tang Congshou said that the phosphate resources in Hubei Province are mainly concentrated in western Hubei, controlled by Huangling anticline and Shennongjia anticline. Phosphate deposits in western Hubei are concealed deposits, most of which are buried at 1 1,000m, and the deepest reaches 1 1,700m, and the surface is covered by deep forests. In the case of great difficulty in prospecting, from 20 1 1 to the end of 20 19, Hubei Institute of Chemical Exploration has discovered 2.3 billion tons of phosphate rock in western Hubei, and one of its important experiences is to persist in geological and technological innovation throughout the whole prospecting process.
-carry out theoretical innovation in geology and mineralization and guide the breakthrough in prospecting. Guided by the ore-controlling theory of paleostructure, the technicians of Hubei Institute of Chemical Exploration summarized the metallogenic regularity and distribution characteristics of Yichang phosphorite through comprehensive research on the prospecting results in the exploration area: phosphorite was mainly formed in the Doushantuo subsidence area developed on the basis of Liantuo uplift belt, and distributed in the east-west, northwest structural belt and the joint arc structural belt of the south or northwest structural belt; Phosphate rocks are mostly developed in underwater uplift zones and concentrated in the north side of arc faults or NW-trending faults.
-Innovating in deep drilling technology and methods, and giving full play to the role of prospecting breakthrough. In view of the difficulties in deep well drilling, Hubei Institute of Chemical Exploration has successively innovated the drilling technology and technical methods: it invented the wooden bridge drilling (water stop) device, which has the characteristics of reliability, operability and low cost, which not only avoids the hidden danger of metal remaining in the drilling hole after the metal bridge drilling (water stop) device is inserted into the hole, but also skillfully uses the rope coring tool; The drilling technology to inhibit the shrinkage of carbonaceous mudstone and the technology of wall fixation and hole protection by reverse confined water method have been developed.
This systematic exploration enriches the deep prospecting theory of Yichang phosphate mine and is of great value to the study of deep metallogenic model of western Hubei phosphate mine. After the project is put into production, it can drive the mountainous areas out of poverty and promote local economic development, with remarkable economic and social benefits. Tang Congshou said that he believes that under the guidance of the green development concept of Yaozhihe Village, "where is the mine, where is the environmental treatment and where is the scenic spot construction", the super-large phosphate rock in the mining area near the weir will also have a better future.