Suspension roasting system and method for industrially processing ferromanganese ore

A suspension roasting and suspension roasting furnace technology, applied in the field of mineral processing, can solve the problems of environmental pollution, low processing capacity, large additive dosage, etc., and achieve the effects of high heat and mass transfer efficiency, large processing capacity, and strong adaptability

Active Publication Date: 2020-08-07
SHANGHAI MILESTONE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the technical problems of high energy consumption, low processing capacity, high cost, large amount of additives, environmental pollution and other technical problems existing in the utilization and development of the traditional process of iron-manganese ore, the present invention provides a suspension roasting system and method for industrially processing iron-manganese ore

Method used

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  • Suspension roasting system and method for industrially processing ferromanganese ore
  • Suspension roasting system and method for industrially processing ferromanganese ore

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] The structure of the suspension roasting system for industrial processing of iron-manganese ore is as follows: figure 1 As shown, it includes a feeding bin 2, a Venturi dryer 5, a first cyclone preheater 6, a second cyclone preheater 7, a pre-oxidation suspension roaster 8, a heat separation cyclone 10, a suspension reduction roaster 12, Collection bin 18, ore grinding machine 19, magnetic separator 20 and induced draft fan 26;

[0063] A feeding belt 1 is provided above the feeding bin 2 for transferring materials to the feeding bin 2; a loss-in-weight feeder 3 is arranged between the feeding bin 2 and the screw feeder 4, and the loss-in-weight feeder 3 is connected with the screw feeder 4 respectively. The outlet of the feeding bin 2 is opposite to the feeding end of the screw feeder 4, and the feeding port of the screw feeder 4 is opposite to the feeding port of the Venturi dryer 5;

[0064] The discharge port of Venturi drier 5 communicates with the feed port of th...

Embodiment 2

[0089] The structure of the suspension roasting system for industrialized treatment of ferromanganese ore is the same as in Example 1;

[0090] The iron grade TFe 43.87% of the ferromanganese ore that adopts, manganese grade TMn 23.51%; Method is the same as embodiment 1, and difference is:

[0091] (1) The part of the ferromanganese ore crushed to a particle size of -1mm accounts for 85% of the total mass;

[0092] (2) Control the temperature of the material at the outlet of the Venturi dryer 5 to be 160°C; the solid material is preheated to 550°C in the second cyclone preheater 7;

[0093] (3) The solid material in the pre-oxidation suspension roaster 8 is heated to 700°C for roasting, and the residence time in the pre-oxidation suspension roaster 8 is 180s;

[0094] (4) The reduction roasting temperature is 600°C; the residence time of the oxidized slag powder in the suspension reduction roaster 12 is 30min; 2 / CO and Fe in oxide slag powder 2 o 3 and Mn 2 o 3 1.2 tim...

Embodiment 3

[0097] The structure of the suspension roasting system for industrialized treatment of ferromanganese ore is the same as in Example 1;

[0098] The iron grade TFe 39.62% of the ferromanganese ore that adopts, the manganese grade TMn 19.38%; Method is the same as embodiment 1, and difference is:

[0099] (1) The part of the ferromanganese ore crushed to a particle size of -1mm accounts for 90% of the total mass;

[0100] (2) Control the temperature of the material at the outlet of the Venturi dryer 5 to be 180°C; the solid material is preheated to 700°C in the second cyclone preheater 7;

[0101] (3) The solid material in the pre-oxidation suspension roaster 8 is heated to 900°C for roasting, and the residence time in the pre-oxidation suspension roaster 8 is 60s;

[0102] (4) The reduction roasting temperature is 650°C; the residence time of the oxidized slag powder in the suspension reduction roaster 12 is 10min; 2 / CO and Fe in oxide slag powder 2 o 3 and Mn 2 o 3 1.3 ...

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Abstract

The invention provides a suspension roasting system and method for industrially processing ferromanganese ore. The suspension roasting system comprises a feeding silo, a venturi dryer, a first cyclonepreheater, a second cyclone preheater, a pre-oxidation suspension roaster, a thermal separation cyclone, a suspension reduction roaster, a collection bin, an ore grinder, a magnetic separator and aninduced draft fan. The suspension roasting method comprises the steps that (1) the ferromanganese ore is crushed; (2) the ferromanganese ore is continuously transported to the venturi dryer; (3) the induced draft fan is started, negative pressure is generated in the system, and combustion flue gas in the venturi dryer is mixed with fine ore to remove adsorbed water; (4) the material enters the first cyclone preheater and the second cyclone preheater to be preheated and then enters the pre-oxidation suspension roaster; (5) after suspension roasting, the material enters the suspension reductionroaster through the thermal separation cyclone; (6) suspension reduction roasting is carried out at 500-650 DEG C; (7) the material enters the collection bin through a three-stage cooling cyclone; and(8) magnetic separation is carried out after ore grinding. The suspension roasting device and method have the advantages of high heat and mass transfer efficiency, low energy consumption, high adaptability to different types of ferromanganese ore, large processing capacity, suitability for large-scale industrial production and the like.

Description

technical field [0001] The invention relates to the technical field of mineral processing, in particular to a suspension roasting system and method for industrially processing iron-manganese ore. Background technique [0002] Manganese is irreplaceable in the production process of high-performance and high-quality steel materials. 90% of manganese is used in the steel industry, but the proportion of high-quality iron ore resources and manganese ore resources is getting lower and lower. Manganese mineral resources have not yet been developed and utilized. For example, iron-manganese ore is widely distributed and has huge reserves. However, due to the close relationship between the iron-manganese ore and the similar nature, conventional mineral processing methods cannot achieve efficient utilization, and there is no economically feasible resource utilization. means. [0003] Patent CN201410038273.5 discloses an additive and method for strengthening the separation of iron and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B1/10C22B47/00
CPCC22B1/10C22B47/00
Inventor 韩跃新袁帅李艳军高鹏孙永升
Owner SHANGHAI MILESTONE TECH CO LTD
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