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Classifying suspension roasting device for complex refractory iron ore

A technology for suspending roasting and iron ore, which is applied in the field of mineral processing to achieve optimal technical and economic indicators, improve reduction effect, and reduce energy consumption

Active Publication Date: 2015-12-09
SHANGHAI MILESTONE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the above-mentioned problems existing in the suspension roasting technology of complex and refractory iron ore, the present invention provides a classification suspension roasting device for complex and refractory iron ore

Method used

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  • Classifying suspension roasting device for complex refractory iron ore

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The structure of complex refractory iron ore classification suspension roasting device is as follows: figure 1 As shown, it includes a suspension preheating oxidizer, a two-stage cyclone classifier, a two-stage suspension reducer, a cyclone separator and a fan; the feed port of the suspension preheating The discharge port of the oxidizer is connected with the feed port of the primary cyclone classifier; the discharge port of the primary cyclone classifier is connected with the feed port of the secondary cyclone classifier, and the discharge port of the secondary cyclone classifier is connected with the cyclone The air inlet of the separator is connected, and the air outlet of the cyclone separator is connected with the inlet of the fan; the outlet of the first-stage cyclone classifier is inserted into the inlet of the first-stage suspension reducer, and the outlet of the second-stage cyclone classifier is inserted into the second In the feed inlet of the stage suspensio...

Embodiment 2

[0048] Device structure is the same as embodiment 1, and difference is:

[0049] (1) The suspension reducer is composed of a large cylinder and a small cylinder, the diameter-to-height ratio of the large cylinder is 1:3, and the diameter-to-height ratio of the small cylinder is 1:3;

[0050] (2) The ratio of the height of the communication port between the large cylinder and the small cylinder to the height of the small cylinder is 1:4, and the volume ratio is 1:0.4;

[0051] (3) The volume ratio of the primary suspension reducer to the secondary suspension reducer is 1:0.6;

[0052] (4) The volume ratio of the primary cyclone classifier and the secondary cyclone classifier is 1:0.6;

[0053] (5) The volume ratio of the suspension preheating oxidizer to the primary suspension reducer is 1:0.4;

[0054] Using method is the same as embodiment 1, and difference is:

[0055] (1) The temperature of the powder in the suspension preheating oxidizer is 800°C;

[0056] (2) The redu...

Embodiment 3

[0064] Device structure is the same as embodiment 1, and difference is:

[0065] (1) The suspension reducer is composed of a large cylinder and a small cylinder, the diameter-to-height ratio of the large cylinder is 1:4, and the diameter-to-height ratio of the small cylinder is 1:4;

[0066] (2) The ratio of the height of the communication port between the large cylinder and the small cylinder to the height of the small cylinder is 1:5, and the volume ratio is 1:0.5;

[0067] (3) The volume ratio of the primary suspension reducer to the secondary suspension reducer is 1:0.7;

[0068] (4) The volume ratio of the primary cyclone classifier and the secondary cyclone classifier is 1:0.7;

[0069] (5) The volume ratio of the suspension preheating oxidizer to the primary suspension reducer is 1:0.6;

[0070] Using method is the same as embodiment 1, and difference is:

[0071] (1) The temperature of the powder in the suspension preheating oxidizer is 1000°C;

[0072] (2) The red...

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Abstract

The invention provides a classifying suspension roasting device for complex refractory iron ore. The device comprises a suspension preheating oxidizing device, two-stage cyclone classifiers, two-stage suspension reducers, a cyclone separator and a draught fan, wherein the suspension preheating oxidizing device communicates with the first-stage cyclone classifier, and the first-stage cyclone classifier communicates with the second-stage cyclone classifier; the second-stage cyclone classifier communicates with the cyclone separator, and the cyclone separator communicates with the draught fan; discharging ports of the first-stage classifier and the second-stage classifier are correspondingly inserted into the first-stage suspension reducer and the second-stage suspension reducer. With the adoption of the device, coarse and fine materials can be classified, magnetized and roasted, and thus the reduction conditions of the materials at different classes can be controlled; in addition, the energy consumption can be greatly reduced, and the optimal technical-economic indicator can be obtained.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, in particular to a classification suspension roasting device for complex refractory iron ore. Background technique [0002] my country has huge reserves of complex refractory iron ore resources. The total reserves of typical refractory iron ore resources such as fine-grained ore, siderite, limonite, and oolitic hematite are more than 20 billion tons, and they are widely distributed in Liaoning and Hebei. , Shanxi, Shaanxi, Hubei, Xinjiang and other places. The mineral composition of the above refractory iron ores is complex and the crystal size is fine. It is difficult to obtain ideal technical and economic indicators by conventional beneficiation technology, but better separation indicators can be obtained by using suspension roasting technology to process such refractory iron ores. However, in the production practice of this technology, it is found that there are obvious differences ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B1/02
Inventor 韩跃新高鹏李艳军袁帅
Owner SHANGHAI MILESTONE TECH CO LTD
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