Suspension roasting comprehensive utilization system and method for iron containing manganese ore

A technology of suspension roasting and manganese ore, which is applied in the field of mineral processing, can solve the problems of inability to realize efficient comprehensive utilization of iron-manganese ore resources, low processing capacity, and high energy consumption, and achieve recyclable waste heat, large processing capacity, and high heat and mass transfer efficiency high effect

Active Publication Date: 2017-12-29
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a suspension roasting comprehensive utilization system and method of ferromanganese ore, which solves the problem that the existing ferromangane

Method used

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  • Suspension roasting comprehensive utilization system and method for iron containing manganese ore

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] The structure of the comprehensive utilization system of suspension roasting of ferromanganese ore is as follows: figure 1 Shown, comprise feeding bin (1), cyclone separator (11), suspension roasting accumulator (3), burner (4), suspension roasting oxidizer (5), reducer (6), cooler ( 7) and magnetic separator (8); the discharge port of feeding bin (1) is communicated with the inlet of screw feeder (2), and the outlet of screw feeder (2) passes through pipeline and cyclone separator (11) The feed inlet at the top is communicated, the discharge outlet at the bottom of the cyclone separator (11) is communicated with the feed inlet below the suspension roasting accumulator (3), and the discharge outlet above the suspension roasting accumulator (3) is connected to the The feed port above the suspension roasting oxidizer (5) is connected, the feed port at the bottom of the suspension roasting oxidizer (5) is connected with the feed port of the reducer (6), and the feed port o...

Embodiment 2

[0066] System structure is the same as embodiment 1;

[0067] Method is with embodiment 1, and difference is:

[0068] (1) crushing the ferromanganese ore to a particle size of -200 mesh accounts for 65% of the total weight;

[0069] (2) The temperature of the solid material in the suspension roasting accumulator is controlled at 900°C;

[0070] (3) In the suspension roasting oxidizer, the solid material temperature is 800°C, and the residence time is 20min;

[0071] (4) The solid material is in a suspended state under the action of the furnace gas and the residence time in the discharge chamber is 10 minutes. The temperature of the material is controlled at 600 ° C. The ratio of the furnace gas to the solid material in the discharge chamber is according to CO and H 2 The total amount and Fe 2 o 3 The molar ratio is 1:2;

[0072] (5) The solid material enters the cooler, is cooled to 290°C through heat exchange, and then enters the magnetic separator for magnetic separati...

Embodiment 3

[0075] System structure is the same as embodiment 1;

[0076] Method is with embodiment 1, and difference is:

[0077] (1) crushing the ferromanganese ore to a particle size of -200 mesh accounts for 70% of the total weight;

[0078] (2) The temperature of the solid material in the suspension roasting accumulator is controlled at 1000°C;

[0079] (3) In the suspension roasting oxidizer, the solid material temperature is 900°C, and the residence time is 10 minutes;

[0080] (4) The solid material is in a suspended state under the action of the furnace gas and the residence time in the discharge chamber is 5 minutes. The temperature of the material is controlled at 700 ° C. The ratio of the furnace gas to the solid material in the discharge chamber is according to CO and H 2 The total amount and Fe 2 o 3 The molar ratio is 1:2;

[0081] (5) The solid material enters the cooler, is cooled to 280°C through heat exchange, and then enters the magnetic separator for magnetic sep...

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Abstract

The invention discloses a suspension roasting comprehensive utilization system and method for iron containing manganese ore. The system comprises a feeding bin (1), a cyclone separator (11), a suspension roasting heat accumulator (3), a combustor (4), a suspension roasting oxygenizer (5), a reducer (6), a cooler (7) and a magnetic separator (8). The method comprises the steps that firstly, the iron containing manganese ore is crushed and arranged in the feeding bin; secondly, the iron containing manganese ore is conveyed into the cyclone separator through a spiral feeder, and bottom materials enter the suspension roasting heat accumulator; thirdly, the combustor is inflated with air and coal gas, and oxygen-excess combustion of the materials in the suspension roasting heat accumulator is kept; fourthly, a roots blower is started, and the preheated materials enter the suspension roasting oxygenizer; fifthly, the materials enter the reducer to be subjected to the reducing reaction after being oxidized; and sixthly, the materials enter the cooler to be subjected to heat exchange after being reduced and then enter the magnetic separator. The suspension roasting comprehensive utilization system and method have the beneficial effects that the heat and mass transfer efficiency is high, waste heat can be recycled, the treating capability is high, and the suspension roasting comprehensive utilization system and method are suitable for large-scale industrial production.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, and in particular relates to a comprehensive utilization system and method for suspension roasting of iron-manganese ore. Background technique [0002] The iron and steel industry is the basic industry for the healthy development of the national economy. With the rapid development of my country's national economy, resource constraints have gradually replaced capital constraints as the restrictive factors for the healthy and sustainable development of the national economy. More than 90% of manganese ore resource products are used in the iron and steel industry. Manganese ore and iron ore are the basis for the development of the iron and steel industry. my country's high-quality iron ore resources and manganese ore resources are increasingly scarce. However, my country's high-iron manganese ore resources are abundant, and more than 70% of the manganese ore resources are associated with a...

Claims

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Application Information

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IPC IPC(8): C22B1/02
CPCC22B1/02
Inventor 韩跃新李艳军袁帅高鹏
Owner NORTHEASTERN UNIV
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