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A method for precise control of trace elements in sintered ore

A technology of trace elements and control methods, which is applied in the field of iron ore powder sintering, can solve problems such as the inability to stabilize the content of trace elements in sintered ore, and achieve the effect of good mechanical properties and stable trace element content

Active Publication Date: 2022-02-11
河北龙凤山铸业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention proposes a method for precise control of trace elements in sintered ore, which solves the problem that the ore blending method in the prior art cannot stabilize the content of trace elements in sintered ore

Method used

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  • A method for precise control of trace elements in sintered ore
  • A method for precise control of trace elements in sintered ore
  • A method for precise control of trace elements in sintered ore

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] (1) Calculate the ratio of each acid concentrate in the mixed-acid concentrate according to the trace element calculation formula, and calculate the ratio of each alkaline concentrate in the mixed-alkali concentrate.

[0072] Premixing of mixed acid concentrate

[0073]

[0074]

[0075] According to this ratio, the trace element content of the obtained mixed acid concentrate is as follows:

[0076] TiO 2

P V MnO 2

Cr 0.073％ 0.012％ 0.009％ 0.058％ 0.011％

[0077] Pre-mixed soda concentrate

[0078] raw material name Alkaline Concentrate 7 Alkaline Concentrate 10 Proportion / % 85 15

[0079] According to this ratio, the trace element content of the obtained mixed alkali concentrate is as follows:

[0080] TiO 2

P V MnO 2

Cr 0.066％ 0.014％ 0.016％ 0.078％ 0.002％

[0081] (2) Mix ore ingredients

[0082] According to the calculation formula of the TFe content of the mixed or...

Embodiment 2

[0092] (1) Calculate the ratio of each acid concentrate in the mixed-acid concentrate according to the trace element calculation formula, and calculate the ratio of each alkaline concentrate in the mixed-alkali concentrate.

[0093] Acid Concentrate Premix

[0094] raw material name Acid Concentrate 1 Acid Concentrate 2 Acid Concentrate 7 Acid Concentrate 10 Proportion / % 15 40 35 10

[0095] According to this ratio, the trace element content of the obtained mixed acid concentrate is as follows:

[0096] TiO 2

P V MnO 2

Cr 0.061％ 0.010％ 0.004％ 0.066％ 0.009％

[0097] Alkaline Concentrate Premix

[0098] raw material name Alkaline Concentrate 3 Alkaline Concentrate 5 Alkaline Concentrate 7 Alkaline Concentrate 8 Alkaline Concentrate 9 Proportion / % 38 25 10 10 17

[0099] According to this ratio, the trace element content of the obtained mixed alkali concentrate is as follows:

...

Embodiment 3

[0112] (1) Calculate the ratio of each acid concentrate in the mixed-acid concentrate according to the trace element calculation formula, and calculate the ratio of each alkaline concentrate in the mixed-alkali concentrate.

[0113] Acid Concentrate Premix

[0114] raw material name Acid Concentrate 2 Acid Concentrate 3 Acid Concentrate 5 Acid Concentrate 8 Proportion / % 10 40 30 20

[0115] According to this ratio, the trace element content of the obtained mixed acid concentrate is as follows:

[0116] TiO 2

[0117] Alkaline Concentrate Premix

[0118] raw material name Alkaline Concentrate 2 Alkaline Concentrate 3 Alkaline Concentrate 5 Alkaline Concentrate 8 Proportion / % 10 40 30 20

[0119] According to this ratio, the trace element content of the obtained mixed alkali concentrate is as follows:

[0120] TiO 2

[0121] (2) Mix ore ingredients

[0122] According to the calculation form...

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Abstract

The invention belongs to the technical field of iron ore powder sintering, and proposes a method for precise control of trace elements in sintered ore, including firstly dividing iron-containing raw materials into acid ore and alkaline ore, preparing mixed acid concentrate from acid ore, and preparing from alkaline ore Mixed alkali concentrate; mixed acid concentrate and mixed alkali concentrate to form mixed ore; mixed direct ingredients, returned ore, fuel, calcium and magnesium solvent and mixed ore to obtain sintered ore. Through the above technical solution, the problem that the ore blending method in the prior art cannot stabilize the content of trace elements in the obtained sintered ore is solved.

Description

technical field [0001] The invention belongs to the technical field of iron ore powder sintering, and relates to a method for precisely controlling trace elements of sintered ore. Background technique [0002] With the continuous development of foundry technology, the quality requirements of cast iron products are getting higher and higher. Not only is it required that the total amount of trace elements in cast iron not exceed the standard, but also the content of each trace element must meet the requirements of cast iron. Sintering is a process in which various powdery iron-containing raw materials are mixed with an appropriate amount of fuel and flux, and an appropriate amount of water is added. After mixing, the materials undergo a series of physical and chemical changes on the sintering equipment to sinter into blocks. In the technological process of the sintering plant, the batching production link has the greatest impact on the chemical composition and physical propert...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B1/16C21B5/00
CPCC22B1/16C21B5/008Y02P10/20
Inventor 白佳鑫白鹏十瀚
Owner 河北龙凤山铸业有限公司