Magnetism recovery device for magnetization of feebly magnetic ore by roasting on two pallets

Abstract

The invention discloses a magnetism recovery device for magnetization of feebly magnetic ore by roasting on two pallets. The magnetism recovery device is mainly characterized by comprising a gas producing mechanism, a charging mechanism, a discharging mechanism, a frame and a hydraulic control mechanism, wherein, two pallets are symmetrically arranged on two ends of the frame, a track is arranged on the frame and the pallets move along the track. The magnetism recovery device controls a roasting reaction in a roasting chamber of feebly magnetic ores such as hematite, limonite, siderite and the like after pelletization by gas generated by the gas producing mechanism, the feebly magnetic ores are converted into strongly magnetic ores by circular and alternate operation of the two pallets, and then conventional magnetic separation process flow is utilized to obtain qualified refined iron ore for metallurgy industry. The magnetism recovery device for magnetization of the feebly magnetic ore by roasting on the two pallets has small investment, simple structure, short capital construction period, good operability and high popularity rate, and is favorable for environmental protection and easily accepted by investors especially in remote and undeveloped areas with mineral resources, and has remarkable social benefit.

Description

Technical field [0001] The invention belongs to the technical field of beneficiation equipment, and in particular relates to a magnetic return equipment for roasting and magnetizing weakly magnetic ore with two trolleys. Background technique [0002] my country's magnetite resources are limited, and the iron ore powder produced by magnetite is currently the main source of raw materials for the ferrous metallurgical industry. The ore source is close to exhaustion, and a large amount of ore needs to be imported. However, weakly magnetic ores such as hematite, limonite, and siderite are widely distributed in my country and have a large storage capacity. Because of its weak magnetism, the production of beneficiation is restricted. Weak magnetic ore with an iron grade of 40% is idle and wasted because magnetic separation is ineffective for it. Even if some re-election processes are adopted, the scale cannot be formed due to low output and no guarantee of quality. In order to s...

AI Technical Summary

Problems solved by technology

The magnetization problem has been solved in the laboratory, but in terms of social application and promotion, it is difficult to be accepted by mineral processing enterprises due to the high cost of magnetization and huge investment in equipment.

[0003] In response to this situation, currently, the roasting equipment used includes: shaft furnace, belt roaster and rotary kiln, but the investment in shaft furnace is huge, uniform heating is difficult, the production capacity of a single furnace is limited, and the output is low, which is limited to hematite , Magnetite mixed roasting; and belt roasting machine roasting, the quality of the upper and lower sides of the ore is uneven, the equipment is easy to burn out, and it needs to be equipped with heat-resistant alloy materials at high temperatures, and the process is more complicated; while the rotary kiln roasting method is easy to over-burn in the kiln, "Nodules" on the kiln wall form a bonded hard ring, which affects the performance of the equipment

Images