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 arrangedon 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 specifically relates to a double trolley roasting and magnetizing weakly magnetic ore reduction equipment. Background technique [0002] my country's magnetite resources are limited. At present, iron concentrate produced from magnetite is the main source of raw materials for the ferrous metallurgy industry. Mineral resources are nearly exhausted, and a large amount of imported ores are needed. However, weakly magnetic ores such as hematite, limonite and siderite are widely distributed in our country and have large reserves. Because of its weak magnetism, it restricts the production of mineral processing. The weak magnetic ore with an iron grade of 40% is left unused and wasted due to the ineffective magnetic separation. Even if some re-selection processes are adopted, the scale cannot be formed due to low output and no guarantee of quality. In order to solve this difficult probl...

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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

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