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Soviet manganese ore mining has a long history, is now the world's largest producer of manganese ore, the nineteenth century began to develop Qiatu La Nikopol deposits and eighties, from the late twenties of the twentieth century, Soviet Union Manganese ore production has always ranked first in the world. The Soviet Union also dominated the world's manganese ore trade. Since the 1980s, the annual production of commercial manganese ore in the Soviet Union has reached about 10 million tons. According to reports, the output in 1982 was 919.89 million tons. In 1983, the output was 9.253 million tons. The total reserves of the A+B+C1+C2 grades of the Soviet manganese ore have been determined to be 2.5 billion tons (average manganese content 23% to 26.4%). The Soviet manganese ore reserves account for almost 40% of the world's total reserves, second only to South Africa, ranking second in the world.
The Soviet Union is the world's largest consumer of the metal manganese. The amount of manganese ore consumed per ton of steel produced is almost double that of the major western steel producing countries. This is because the iron ore itself substantially of the Soviet Union manganese, and high sulfur content coal coke - and mass production of high iron-manganese and permanganate. In the consumption of manganese ore in the Soviet Union, 85% is used in the ferrous metallurgical industry, mainly as a compound for the manufacture of ferromanganese alloys and for the production of pig iron, about 4% for the chemical industry and the power industry, and about 11% for non-ferrous metallurgy. The pharmaceutical industry, agriculture and other areas of the national economy are used in the steelmaking process for deoxidation, desulfurization and refining ferromanganese. Manganese steel in a non-metal consumption are estimated to be at least 200,000 tons every year, for welding, a manganese salt, dry, oil industry, refining and casting of zinc and the like. In recent years, the quality of battery-grade manganese produced in the Soviet Union has declined, and dry battery manufacturers have used imported battery-grade synthetic manganese dioxide as an ingredient. The production of ferromanganese in the Soviet Union is also the highest in the world. The Soviet Union is now planning to equip six sets of new submerged arc furnaces made in Japan to further expand the production capacity of ferromanganese. The new equipment will be installed at the Nikopol smelter in Ukraine and the Chatstar smelting plant in Georgia, both adjacent to the manganese mine. Each set of furnaces can produce 120,000 tons of ferromanganese per year. Democracy has funded these new equipment and will be compensated for some of its products. Imported high grade manganese ore will also be used as a feedstock for these two smelters. The export volume of manganese ore in the Soviet Union has increased from 1.32 million tons in 1979 to 1.35 million tons in 1980. About 20% of them are supplied to Western countries, and 80% are supplied to countries that have passed through each other. According to reports, Western countries have stopped supplying in recent years.
Although the Soviet Union still maintains a leading position in manganese ore production, the shortage of high-grade manganese ore has developed. therefore. 1983 not only limited exports to countries that have been exchanged, but has also imported a certain amount of high-grade manganese oxide ore (>50% Mn) from Gabon and Australia in recent years. It appears that this is to compensate for the lack of high-quality manganese ore resources in the Nikopol and Chatura mines. According to reports, a new mine is currently in production at the Bourne Kolk Heights near Chatura, with a final production capacity of 10 million tons per year. To maintain its leading position in the manganese ore producers, the Soviet Union must further increase its investment in mines.
Flexible lift gate is a flexibel soft curtain door, inside and outside the two curtains , curtains used between the aluminum beams connected with a vertically movable rail , the roof beams have levels not in the same straight line and hanger large plants in particular Be applicable , Flexible lift door installation does not take up interior space in the hole inside , When the first move to open the door , and finally superimposed over the hole , Off event curtain rail first and then fall down until its is completely closed
Door body composition :
The bottom of the door curtain rail aluminum beam beam seal top drive system and transmission of electrical control systems and safety devices
Flexible door features:
1. Light weight compared with other types of the same size door , flexible door lighter weight reduces the strength of steel at the top of the doorway architecture degree requirements ,
2. Small compared with the same specification of the machine style doors 2, footprint ,flexible installation in the door after the hole is turned on internally stacked above the hole , do not take up interior space , Large Span hole may be provided a plurality of movable rail the entire door into several independent stacking doors shorten the span of a single door so that the overall thickness of the door is reduced , further reducing the footprint
3. Rational layout flexible doors with movable rail rail can set different activities based on the specific circumstances of the door into the door several sizes of uneven accumulation of doors to make the building as a whole rational layout greatly reduces the overall architecture of the space and cost
4. The wind strength between two layers of high flexible door curtain as the bottom of an aluminum beam has a wind skeleton steel structure , By adjusting the beam thickness and spacing , which can resist wind pressure of any intensity , so the door can be flexible for use in any area
5. The tensile strength of the flexible door after door curtain is double polyester fabric , high tensile wire rope equipped with ultra-high hole suitable for large machinery such as aircraft hangars and repository
6. The curtain coated with vinyl coated with a waterproof sunscreen and smoldering performance , capable of sound absorption retardant insulation mildew proof and so on
7. Safe door , Cube with anti-lock break to ensure safety in case of accidental breakage of wire rope jammed in the door quickly experience anywhere rails , Multiple protection features mechanical and electrical installation to ensure t he safety of goods passing aircraft and other vehicles and personnel , the movable rail is also equipped with anti-fall device , you can ensure reliable parked at the top of the hole after the movable rail is raised without falling , The bottom of the door is equipped with and airbag , it will immediately rebound to rise until the safety door drops open when obstacles encountered in the process , You can also install infrared protection device on the door
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