Fine particle sintered ore charging technology
Fine Particle Sintered Ore Charging Technology
Fine particle sintered ore charging technology is an important part of modern sintered ore production technology. In recent years, fine particle sintered ore charging technology has been developed rapidly after the development of large and medium-sized sintered ore production technology, becoming an important part of the sintering process. Through the rationally designed charging technology, the quality of sintered ore can be improved and the energy cost reduced.
The charging technology is based on the characteristics of the ore. The newly-developed ore is of high caking temperature and low thermal conductivity, and therefore the charge should be a small-grain-sized sintering ore. In order to ensure that the sintering is even, the feed should be uniform, without congested particles and large agglomerations. Moreover, the ore feed temperature and the dwell time should be adjustable to ensure reasonable charging.
The composition of fine particle sintered ore charging is determined by the characteristics of the ore. Carbon and various combustibles, such as coke breeze, fuel oil, pulverized coal, and natural gas, are used as combustibles, supplemented with binders and various additives. In order to reduce dust, the fine particles should be sufficiently moistened before being charged, and water or steam can be used for such purpose.
In fine particle sintered ore charging technology, pre-processing of the raw material is very important, because the pre-processing has an effect on the sintering quality, energy consumption and productivity of the sintering process. There are three main approaches to pre-processing: crushing, agglomeration and milling. The principle of selection of pre-processing approach is to select the optimum technique that can reduce the energy consumption, to maintain the quality and maximize the productivity.
The most important factor in the charging of fine particle sintered ore is the control of the charging rate, because the charging rate has a great influence on the quality of the formed product. Therefore, in the charging process of fine particle sintered ore, accurate control of the charging rate is essential. The charging rate should be adjusted according to the actual situation. It should neither be too slow or too fast, or else the oxidation of the ore will be too high, or it will form clusters, affecting the sintering quality.
In addition, the furnace temperature and the residence time of the ore should be strictly controlled to ensure that the ore particles are not over-heated or over-oxidized. The temperature should be kept as stable as possible, and the residence time should also be proportional to the amount of ore charged. If the furnace temperature is too high or the residence time is too long, the sintering quality will be affected.
Fine particle sintered ore charging technology is an important technology in sintering process. It is the key to control the quality of the sintered ore and to reduce the energy consumption. Therefore, it is necessary to pay attention to the application of the technology when producing sintering ore.
