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A New Fluidized Magnetized Roasting System Based on Rotary Kiln

A magnetized roasting and rotary kiln technology, applied in rotary drum furnaces, furnace types, furnaces, etc., can solve the problems of increasing the dust content of materials, increasing the pressure of the dust collection system, and poor equipment operation, saving energy and high heating efficiency. , The effect of uniform and stable quality of roasted products

Active Publication Date: 2021-10-19
INST OF MULTIPURPOSE UTILIZATION OF MINERAL RESOURCES CHINESE ACAD OF GEOLOGICAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the material is in a fluidized state throughout the whole process, and even part of it is a pneumatically conveyed bed, a large amount of air needs to be heated during the heating or reaction process, resulting in a waste of energy. As a result, the material is worn, the dust content of the material is increased, and there is also a problem of serious wear of the furnace body, especially the high-speed cyclone dust collection device wears more seriously
Under the large gas and solid flow rate, a large amount of dust enters the dust collection system, which also increases the pressure of the dust collection system, resulting in poor operation of the equipment

Method used

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  • A New Fluidized Magnetized Roasting System Based on Rotary Kiln
  • A New Fluidized Magnetized Roasting System Based on Rotary Kiln

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] A new type of fluidized magnetization roasting system based on rotary kiln, such as Figure 1-2 As shown, it includes silo 1, belt feeder 2, rotary kiln system 3, fluidized reduction system 4, primary dust removal device 5 and secondary dust removal device 6;

[0046] The silo 1 is arranged above the belt feeder 2, the end of the belt feeder 2 is arranged above the rotary kiln system 3, and the end of the rotary kiln system 3 is arranged at the end of the fluidized reduction system 4 Above, the primary dust removal device 5 is arranged above the belt feeder 2, and the secondary dust removal device 6 is connected to the primary dust removal device 5;

[0047] The fluidized reduction system 4 includes a residence chamber 7, a gas lock device 8 and a first cyclone dust collector 9, the top of the residence chamber 7 is provided with a first feed port 10, and the bottom of the residence chamber 7 is connected to the reduction chamber 7. The gas pipeline 11, the inside of t...

Embodiment 2

[0053] Based on Embodiment 1, the inside of the air lock device 8 is vertically provided with a second baffle 29 so that a U-shaped channel is formed in the air lock device 8 . Preferably, the bottom end of the second baffle plate 29 is horizontally lower than the first discharge port 14 to prevent the material from being directly discharged together with the reducing gas without being blocked by the inert gas.

Embodiment 3

[0055] Based on Example 1, the reducing gas pipelines 11 are in several groups, uniformly arranged at the bottom of the residence chamber 7; the inert gas pipelines 13 are in several groups, evenly arranged at the bottom of the gas lock device 8 . Preferably, the inert gas is nitrogen.

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PUM

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Abstract

The invention discloses a novel fluidized magnetization roasting system based on a rotary kiln, which includes a material bin, a belt feeder, a rotary kiln system, a fluidized reduction system, a primary dedusting device and a secondary dedusting device; The bin is set above the belt feeder, the end of the belt feeder is set above the rotary kiln system, the end of the rotary kiln system is set above the fluidized reduction system, and the primary dust removal device is set At the place where the rotary kiln system is close to the belt feeder, the secondary dedusting device is connected to the first dedusting device; the purpose of the present invention is to combine the existing rotary kiln heating technology to provide a highly feasible energy-saving and environmental protection based rotary kiln The new fluidized magnetization roasting system.

Description

technical field [0001] The invention relates to a novel fluidized magnetization roasting system based on a rotary kiln, which belongs to the field of fluidized magnetization roasting of complex refractory iron ores. Background technique [0002] my country is rich in iron ore resources, with proven reserves of more than 60 billion tons. More than 97% of the available ores need to be processed to be utilized. Studies have shown that magnetization roasting is one of the most effective methods for processing refractory iron ores. Magnetization roasting changes the phase composition of iron minerals to make them have strong magnetism, and then separates iron minerals by simple magnetic separation, which provides a feasible path for the development of complex refractory iron ores. [0003] At present, the roasting equipment used in industry is mainly shaft furnace, traditional rotary kiln, fluidized fluidized furnace, etc. Shaft furnaces are only suitable for roasting lump ore (...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F27B7/32F27B7/33F27D17/00C22B1/10
CPCC22B1/10F27B7/32F27B7/33F27D17/001F27D17/004
Inventor 陈超张裕书胡泽松张少翔
Owner INST OF MULTIPURPOSE UTILIZATION OF MINERAL RESOURCES CHINESE ACAD OF GEOLOGICAL SCI