Shizhuyuan to 143 kinds of mineral deposits of large multi-metal deposit, unique in the world and which amounted to 360 million tons of ore, metal reserves of 1.751 million tons, the potential economic value of 200 billion yuan, the experts were amazing. It is the existence of the Shizhu Garden that has brought back a proud "world first" for China and interpreted the legend of modern mines.
Tungsten is second to none in the world, with metal reserves of 751,000 tons, accounting for 20.7% of the world's proven reserves, accounting for 49% of the country's proven reserves;
Bismuth in the world champion, metal reserves of 316,000 tons, accounting for 42% of the world's proven reserves, accounting for 63% of the country has proven reserves;
Fluorite ranks first in the world, with associated fluorite reserves of 46 million tons, accounting for 35% of the world's proven reserves, accounting for 75% of the country's proven reserves.
1. "Crashing method" to achieve green mining
Applying the results of "deep-hole controlled blasting technology in large-scale underground three-dimensional subdivision", the mining recovery rate of the mining section increased from 42% to over 9%, and the depletion rate was controlled below 5%, which improved the comprehensive utilization rate of resources.
On January 16, 2010, the “World Super Blasting†with a total charge of 821.3 tons in the deep hole was successfully released, achieving efficient and safe mining without filling the empty space. “Safe, efficient and low The cost "back to the mining column and the upper ore of the empty area, the open pit mining technology used the "disintegration method" to solve the world-class mining problem of continuous mining of multi-metal, marking the company's underground deep-hole blasting technology reached the world's advanced level.
2. Research and development of new technologies for “ground measurement and miningâ€
The use of automatic control systems, mine measurement digitization, laser scanning of empty field measurement technology, multi-channel micro-seismic positioning system, ground pressure automatic monitoring system and other scientific research technology integration, leading the company's mining operations continue to digital, information, automation development, further Promote green mining.
3, the first "Kaki Bamboo Garden Beneficiation Law"
The company's polymetallic ore grade is low, the composition of the complex embedded particles is too fine, through the "Eighth Five-Year" and "Ninth Five-Year" scientific and technological research, the company has successfully researched and developed the "Shizhuyuan Law" with the Beijing Institute of Mining and Metallurgy and Guangzhou Nonferrous Institute. The named tungsten-tantalum complex polymetallic ore comprehensive beneficiation new technology solves the problem of comprehensive recovery technology of molybdenum- niobium sulfide ore, black, scheelite and fluorite and flotation separation of calcium-containing minerals, enabling the beneficiation of low-grade complex tungsten. The recovery rate has increased from 30%-40% at the beginning of the establishment of the tungsten polymetallic concentrator to about 60% at the end of the "Ninth Five-Year Plan", and has reached 72%.
Each year, the amount of tungsten, tin, molybdenum and antimony metal can be saved or increased by 970.4 tons, and the output of ferro- iron and fluorite is increased by 80,895 tons. It is equivalent to the construction of a medium-sized non-ferrous metal mine and a medium-sized non-metallic mine, which can extend the mine service limit by 22.5 years, and the resource benefits are very significant. It can reduce the mine tailings and waste slag emissions by a total of 393,200 tons, reduce the environmental pollution caused by land occupation and tailings (waste residue), and the environmental benefits are considerable.
The new technology of “Kizhuyuan Law†mineral processing pioneered a mineral processing law named after a company name and won the second prize of National Science and Technology Progress Award in 2001. On the 12th of 2014, the scientific and technological achievements of the key technology and industrial application of high-efficiency separation of complex and difficult-to-treat tungsten mines were awarded the second prize of National Science and Technology Progress by the State Council.
4. “Energy saving king†for energy saving and efficiency
The first is to replace the flotation machine with a flotation column that saves electricity and water;
Second, before the tailings discharge, the tailings concentration technology is used, which increases the concentration before the concentration by about 15%, reduces the delivery volume of the tailings pump, reduces the consumption of power and tailings pump parts, and saves annually. About 1 million yuan, the purified wastewater can be recycled, and the annual water consumption can be reduced by 5 million tons;
The third is toward large-scale production equipment, the development of automation, energy-saving direction, energy conservation yuan output value of energy consumption decreased from 1.77 tons of standard coal in 2009 to 0.90 tons of standard coal in 2014, an average annual decline of 12%. (mining exchange)
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