subject: Technology Progress Of Refractory Ore Beneficiation [print this page] China refractory iron ore beneficiation technology were reviewed, for both of the complex nature of the Refractory Iron characteristics and problems of proposed future research directions.
Sustained and stable development of the iron and steel industry is an urgent need for stable, adequate, quality supply of iron ore raw materials. Into the 21st century, as the world economic recovery and structural adjustment of the acceleration, especially in China's rapid economic development, stimulating the sustained high growth of China's steel industry, China's steel output has ranked first in the world steel production in 2003 reached 220 million tons of steel production in 2004 exceeded 270 million tons. With the expanding scale of China's steel industry, China has surpassed Japan to become the world's largest importer of iron ore in 2003, imported 150 million tons of iron ore, imported iron ore reached 200 million tons in 2004, imports of iron ore The number accounted for more than half of the total of finished iron ore demand in China. Due to increasing iron ore demand and supply gap, domestic and international iron ore prices skyrocketing, a substantial rise in sea freight transport system in extreme tension. The improvement of the iron ore import dependency has become a significant risk for the economic security of China's steel industry. Therefore, an urgent need to rely on technological advances to maximize the use of existing domestic iron ore resources, especially mineral processing technology and therefore can not use complex refractory iron ore and the current can take advantage of the quality and utilization of low iron ore, increase storage efficiency, and fully tap the productive potential of the existing iron mines, iron ore self-sufficiency rate to ease the pressure of imported ore to maintain stable, adequate, high-quality iron ore supply of raw materials in order to protect the steel industry sustained and steady development.
Beneficiation technology research and research in China Refractory iron ore beneficiation technology has made encouraging progress, but due to the constraints of China's iron ore types is complex and comprehensive mineral processing technology level is not high, resulting in China Refractory iron utilization of mineral resources is very low, even basic individual minerals was not used. Therefore, after the technology research work to strengthen the following aspects:
(1) research and application of efficient and more broken and less grinding technology and equipment;
(2) to enhance the efficient roasting technology and equipment research, the focus is on fine-grained material (powder) roasting technology and equipment;
(3) to enhance the efficient fine grinding and classification processes and equipment;
(4) efficient fine-grained iron ore beneficiation process and equipment, with emphasis on the deepening of selective flocculation (agglomerate) - Anti-flotation process, equipment and automatic control, dressing and smelting joint technology and bio-leaching process, research efficient recovery of micro-fine-grained iron minerals intensity magnetic separator and flotation devices;
(5) developed for the efficient separation of harmful impurities in mineral flotation reagent of the iron minerals and iron silicate minerals, sulfur, phosphorus, and micro-fine iron ore efficient dispersant, Flocculation (agglomerate) agent, floats election Pharmacy.
