Method for charging iron ore sintering flux and device thereof

A technology for sintering flux and iron ore, which is applied in the field of iron ore sintering flux addition and flux addition devices, which can solve the problems of poor metallurgical performance, poor strength, and low output

Inactive Publication Date: 2009-09-16
PANGANG GROUP VANADIUM TITANIUM & RESOURCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Through the pioneering implementation of flux separation technology, the defects of poor strength, low output and poor metallurgical properties of vanadium-titanium sintered ore are improved, and a new method is provided to improve the sintering quality of vanadium-titanium magnetite

Method used

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  • Method for charging iron ore sintering flux and device thereof
  • Method for charging iron ore sintering flux and device thereof
  • Method for charging iron ore sintering flux and device thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] In order to illustrate the principle and effect of flux addition, and to simulate the on-site flux addition method and steps, the flux addition test was carried out in the laboratory according to the above specific implementation method, and 5 batches of sinter were manufactured. See Table 1 for the ratio of raw materials and fuels used; see Table 2 for the adding method and ratio of flux. %; See Table 3 for technical and economic indicators of sinter.

[0037] Experimental process parameter control: the moisture of the mixture is 6.5-7.5%, the material layer is 600-670mm, the ignition temperature is 950-1150°C, the sintering negative pressure is 11000Pa-12500Pa, and the exhaust gas temperature is 100-130°C.

[0038] Table 1 The proportion of raw materials in each batch of laboratory flux distribution test (%)

[0039]

[0040] Table 2 Addition method and proportion of each batch of laboratory flux addition test

[0041]

[0042] Table 3 Technical effect of...

Embodiment 2

[0046] According to the iron ore sintering flux distribution method and steps of the present invention described according to the specific implementation mode, embodiment 2 is at 173.6m 2 The flux distribution device of the present invention was used on the sintering machine to produce 4 batches of sintered ore. In terms of weight percentage, the ratio of raw materials and fuels is shown in Table 4.

[0047] Table 4 Ratio of quicklime secondary separation plus raw material and fuel

[0048] (Explanation: The total ratio in actual production is not strictly 100%, but close to 100%)

[0049]

[0050] See Table 5 for the adding method and ratio of flux.

[0051] Table 5 Ratio and proportion of quicklime secondary addition

[0052]

[0053] The test results of Example 2 are shown in Table 6.

[0054] Table 6 Comparison of technical effects of quicklime secondary addition and non-addition

[0055]

[0056] It can be seen from Table 6 that compared with the sintering r...

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Abstract

The invention provides a method for charging iron ore sintering flux and a device thereof, an essential exists in that the charged flux is charged into a sintering material twice in various phase, firstly part flux is charged using a batching room, the residual flux is charged after mixing one time for sintering on a sintering machine after two times mixing. A flux charging device is used in charging flux which is set between a first mixing machine and a second mixing machine, wherein, a dust discharge value of two times flux charging chamber transmits the two times charging flux into a feeder machine set on the dust discharge value down part, the feeder machine transmits the flux into a proportion hydrate device set on down part, the flux after alimentary reaction enters into a twice mixing machine for mixing and is transmitted into the sintering machine for sintering. The flux sintering discharging technique can improve defects of poor intension, low yield, bad metallurgical property of vanadium titano sintering ore, increase vanadium titano sintering yield and quality.

Description

technical field [0001] The invention relates to the technical field of sintering, in particular to a flux adding method and a flux adding device for iron ore sintering. Background technique [0002] When iron ore is sintered, it is necessary to add flux to increase the alkalinity of sintered ore, lower the melting point of sintered ore, increase the content of calcium ferrite, and improve the quality of sintered ore. The traditional dosing method is to add all the flux limestone, dolomite, quicklime, and activated ash required for sintering from the batching room at one time. This method is not conducive to fully exerting the efficacy of the flux, and the production quality and energy consumption are affected. [0003] In the prior art, Anshan Iron and Steel discloses a method for sintering double-layered alkalinity pellets by adding fluxes. In this method, high-alkalinity pellets and acidic pellets are combined into one, and acid, Mixed sintering of two kinds of alkali bal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B1/16
Inventor 何木光蒋大均杜斯宏林千谷谢俊勇吴力华宋寒秋李程
Owner PANGANG GROUP VANADIUM TITANIUM & RESOURCES
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