Ore distributing and mixing system based on ports

Abstract

The invention discloses an ore distributing and mixing system based on ports. The system is characterized in that a feeding system and a stacking system are arranged on the ground, and a distributingsystem is arranged below the ground; the feeding system comprises a belt conveyor feeding system and/or an automobile feeding system; the belt conveyor feeding system and/or the automobile feeding system is connected with an iron ore raw material storage system of the ports; the distributing system comprises a plurality of distributing bins, a belt conveyor and a PLC, wherein the plurality of distributing bins are located below the ground plane, each distributing bin is provided with a feeding machine and an electronic belt scale, the feeding machines are arranged below the distributing bins,the feeding ports of the feeding machines are connected with the discharging ports of the distributing bins, the electronic belt scales are arranged below the discharge ports of the feeding machines,the belt conveyor is arranged below the discharging ends of all the electronic belt scales, and the feeding machines, the electronic belt scales are electrically connected with the PCL correspondingly; and the stacking system comprises a stacking machine, and the receiving end of the stacking machine is connected with the discharging end of the belt conveying conveyor in the distributing system.

Description

technical field [0001] The invention belongs to the technical field of ironmaking raw material preparation, and in particular relates to a port-based iron ore batching and mixing system. Background technique [0002] Due to the different sources and varieties of ore raw materials in iron and steel plants, as well as the unstable composition of mine products, there are often miscellaneous types, large fluctuations in composition and particle size. This situation will cause fluctuations in the quality of sinter and instability of furnace conditions during blast furnace smelting. The mixing operation of ore raw materials can provide stable quality ore raw materials for sintering and ironmaking production, thereby improving the quality of sintering ore and improving the technical and economic indicators of blast furnace production. [0003] Iron ore powder mixing technology is an important measure to improve the stability of raw materials in iron and steel enterprises, improve ...

AI Technical Summary

Problems solved by technology

However, at present, most small and medium-sized iron and steel enterprises do not have a mixing yard, and cannot realize the effective application of small-scale, low-cost iron ore, resulting in unstable sinter quality

[0004] With the development of China's iron and steel enterprises, on the one hand, the types of iron ore resources from all over the world entering the Chinese market have greatly increased; However, with the improvement of enterprises’ requirements for cost reduction, energy saving, and efficiency improvement, there are high raw material costs, poor sinter quality, high sinter fuel consumption, low blast furnace iron output, and The problem of high fuel ratio is becoming more and more obvious. Therefore, it has become a major problem for iron and steel enterprises to find a new process that can increase the variety of raw materials and improve the stability of raw material quality without increasing the factory space.

[0005] China is currently the country with the largest iron ore import volume, and the coastal ports have a huge capacity to accept iron ore, but their functions are mainly iron ore loading, unloading, storage and shipping. Limited to the use of two stacker-reclaimers, iron ores of two different grades are taken out from the two stockyards according to the designed hourly flow rate, and then transferred to the third stacker-reclaimer with a belt conveyor to transfer the two raw materials Mixed to the third storage yard, this kind of mixing method is called rough mixing, which has few types of mixed ore, poor mixing effect, and uneven mixing ingredients. If the factory does not carry out mixing and pre-mixing treatment when using On the contrary, it will affect the stability of sinter composition and cause the index of blast furnace to decline

[0006] Among the imported iron ores, most of the iron ores sent from large mines such as Brazil and Australia to Chinese ports are mixed in the other mines or ports, but there are still many non-mainstream iron ores that are still shipped directly from different mines The phenomenon of random loading after arriving at the port will cause poor uniformity of the iron ore in the whole ship, and the direct use of the factory will also cause fluctuations in the composition of the sinter

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