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Vanadium-titanium pellet ore roasting control method

A control method and technology of pelletizing, which is applied in the field of roasting control of vanadium-titanium pellets, can solve problems affecting product qualification rate, etc., and achieve the effect of improving product quality

Inactive Publication Date: 2016-02-17
PANZHIHUA GANGCHENG GROUP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the roasting process, the process requirements such as preheating temperature, roasting temperature, heating rate, and high temperature duration will have an important impact on the quality of the pellet product. If the control is not proper, it will seriously affect the qualified rate of the product.
In the prior art, there is no method for controlling the roasting of vanadium-titanium pellets that can adjust the roasting process conditions in time according to the on-site production conditions, can significantly improve product quality, and improve the qualified rate of pellet products

Method used

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Embodiment Construction

[0009] Vanadium-titanium pellet roasting control method of the present invention comprises the following steps:

[0010] A. Sampling finished pellets at the production site;

[0011] B. Cutting apart the sampled finished product pellets;

[0012] C. Check the cross-section of the finished pellets. If the cross-section is clearly stratified, the inner cross-section is smooth, bright silver, and the metallic luster is obvious, the outer layer is gray, the cross-section is frosted, and the metallic luster is weak, reduce oxidation. temperature or reduce the heating rate; if the section has no obvious stratification, gray, metallic luster, and the section is frosted, then maintain the existing oxidation temperature and heating rate; if the section is obviously stratified, the outer layer is gray, metallic luster, and the section is frosted , the inner layer concentrate is granular, the cross-section is rough, black gray, and has no metallic luster, so the oxidation temperature is...

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Abstract

The invention discloses a vanadium-titanium pellet ore roasting control method and particularly relates to a vanadium-titanium pellet ore roasting control method used in the field of pellet ore oxidizing roasting. According to the vanadium-titanium pellet ore roasting control method, the roasting process conditions can be adjusted according to the field production situation in time, the product quality can be remarkably improved, and the pass percent of a pellet product can be improved. The vanadium-titanium pellet ore roasting control method comprises the steps that (A) finished pellet ores are sampled in a production field; (B) the sampled finished pellet ores are split; (C) the cross sections of the split finished pellet ores are inspected, and process parameters are adjusted. Professional observers detect the cross sections of the vanadium-titanium pellet ores, judge simulated oxidation behaviors of the pellet ores, find out the problems existing in the pellet production process, adjust and optimize preheating temperature, calcination temperature, heating speed, high-temperature duration time and other parameters in time, and the pellet product quality is remarkably improved.

Description

technical field [0001] The invention relates to a method for controlling the roasting of vanadium-titanium pellets, in particular to a method for controlling the roasting of vanadium-titanium pellets used in the field of pellet oxidation roasting. Background technique [0002] The chain grate-rotary kiln-circular cooler pellet production line is the most common pellet production method in the prior art. Vanadium-titanium pellets are acidic oxidation pellets produced from vanadium-titanium magnetite concentrate as the main raw material. Oxidation and roasting mechanism of pellets: The oxidation of magnetite starts at 200°C and ends at about 1000°C. After a series of changes, it is finally completely oxidized into α-Fe 2 o 3 . From cubic to orthorhombic, γ-Fe 2 o 3 Oxidized to α-Fe 2 o 3 , and the magnetism disappears. O in the atmosphere 2 Adsorbed on the surface of magnetite pellets to form r-Fe 2 o 3 TLC. With the further increase of calcination temperature, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B1/02
Inventor 邓尚锋张永康向绍红
Owner PANZHIHUA GANGCHENG GROUP
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