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Ferromanganese Alloy Main Classification
- Jul 28, 2017 -

Ferromanganese Alloy Main classification

Ferrous iron: iron and iron composed of iron alloy. Main categories: high-carbon ferromanganese (carbon 7%), medium carbon ferromanganese (carbon 1.0 ~ 1.5%), low carbon ferromanganese (0.5% carbon), metal manganese, mirror iron, ferromanganese alloy manganese alloy.

In the steel, used as deoxidizer and alloy additives, is the largest amount of iron alloy. Manganese manganese ore for the general requirements of manganese containing 40 to 50%, ferromanganese than greater than 7, phosphorus and manganese ratio of less than 0.003. Before the smelting, the manganese carbonate should be roasted first, and the powder ore must be sintered. Iron and phosphorus containing high ore can only be used in conjunction with, or by selective reduction of low iron and low phosphorus phosphorus-rich slag. Smelting with coke as a reducing agent, some plants are also equipped with lean coal or anthracite. Auxiliary raw materials mainly lime, smelting manganese ferromanganese alloy alloy generally with manganese ferroalloy stone.

First, what is ferromanganese alloy

Containing ferroalloy alloy content of 14% to 99%, the rest of impurities or another (individual two) the main elements, through the smelting of the alloy commonly known as ferromanganese alloy products. Usually include industrial ferromanganese alloy, ferromanganese alloy iron, ferromanganese alloy barium, ferromanganese carbide alloy, ferromanganese alloy calcium, the most commonly used for industrial ferromanganese alloy, ferromanganese alloy iron two.

Smelting any kind of ferromanganese alloy products must be related to the ore (including SiO2) the raw material, mining will destroy the forests, vegetation, while the smelting process will also produce a lot of pollution (such as CO, dust excess, etc.), are consumption of resources, , Low-tech metallurgical industry. Therefore, the developed countries generally do not produce, mainly dependent on imports. As the extensive use of ferromanganese alloy products (the automotive industry, the information industry) has determined its largest consumer for the developed countries, so the production of ferromanganese alloy products in developing countries, in addition to their own consumption, the majority of exports for foreign exchange.

Smelting ferromanganese alloy products must have the following two basic conditions: ① their own environmental clean capacity of the place (also allows the generation of mild pollution sources); ② rich low-cost power supply, because the ferroalloy metallurgical industry for high energy consumption, To industrial ferromanganese alloy, for example, the average power consumption per ton of finished products 12,000 degrees, usually only low hydropower (ranging from 0.2-0.5 per degree) as the production of energy. Because of heavy pollution, energy consumption, high-manganese ferroalloy metallurgical enterprises can only be distributed in remote areas, abundant hydropower (individual thermal power rich) areas, and by the power of tension, in the dry season often due to power cuts or cut production.

Second, China's ferromanganese alloy smelting industry situation

Fujian Sanming area is China's first production of industrial ferromanganese alloy and other ferromanganese alloy products, due to the lack of hydropower in recent years and the excessive exploitation of resources. At present, the scale of ferromanganese alloy metallurgy in Fujian is relatively small. In recent five or six years, Guizhou and Yunnan have made use of their abundant hydropower resources, which has become the largest ferromanganese alloy production base in China. In particular, Guizhou produces about 50% Ferromanganese alloy products are places in Sichuan, Hunan, Jiangxi (individual), Xining, Inner Mongolia, Northeast and other places. In addition to individual small factories, and now ferroalloy iron furnace are generally above 6300KVA, with the country on the ferroalloy industry to rectify, as well as by environmental requirements, around the small capacity furnace and environmental protection requirements of the furnace must be eliminated.