Method for restraining low temperature reduction pulverization of fluorine-containing magnet agglomerate

A technology of magnet sintering and sintering, which is applied in the field of iron and steel smelting, can solve the problems of high cost, achieve low cost, reduce hazards, and improve the effect of low-temperature reduction pulverization performance

Inactive Publication Date: 2018-01-19
BAOTOU IRON & STEEL GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The spraying liquid is generally purchased directly from the prepared calcium chloride solution and transported to the ironworks for use, which has the disadvantage of high cost

Method used

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  • Method for restraining low temperature reduction pulverization of fluorine-containing magnet agglomerate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0029] Select the sintered ore sample of the finished fluorine-containing magnet, crush the sintered ore sample to a particle size of 10.0-12.5mm, and dry it at a temperature of 100±5°C for 2 hours.

[0030] Reconstitution of halogenated soaps out of CaCl 2 The mass fraction is 3% solution, weighs two parts of sintered ore samples of 500 ± 0.5 grams, and sprays 30 grams of 3% halogenated soap solution for every 500 grams of sintered ore (equivalent to spraying 3% per ton of sintered ore 60 kilograms of halogenated soap solution) and 40 grams (equivalent to 80 kilograms of 3% halogenated soap solution sprayed per ton of sinter), put the sprayed sample into an oven, and dry it at a temperature of 100 ± 5°C.

[0031] Select the fluorine-containing magnetite sintered ore that has not been sprayed and sprayed with halogenated soap solution according to the method of this embodiment to detect the pulverization performance of low-temperature reduction, and the detection method is use...

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Abstract

The invention relates to a method for suppressing the low-temperature reduction pulverization of fluorine-containing magnet sintered ore, which comprises: mixing a halogenated soap solution with water and stirring evenly to obtain a halogenated soap solution; the halogenated soap solution is an industrial waste solution containing CaCl2; Spray the halogenated soap solution on the fluorine-containing magnetite sinter. The method utilizes spraying halogenated soap liquid on the surface of fluorine-containing magnetite sintered ore, which not only can significantly improve the low-temperature reduction pulverization performance of fluorine-containing magnetite sintered ore, but also the halogenated soap liquid used in this method belongs to industrial waste liquid, has low cost, and does not contain chlorine. The element content is relatively low, which reduces the harm of chlorine to blast furnace smelting and environmental pollution, and is beneficial to environmental protection.

Description

technical field [0001] The invention relates to the field of iron and steel smelting, in particular to a method for suppressing low-temperature reduction powdering of fluorine-containing magnetite sintered ore. Background technique [0002] Sintering is to mix various powdery iron-containing raw materials with an appropriate amount of fuel and flux, and add an appropriate amount of water. After mixing and pelletizing, the materials undergo a series of physical and chemical changes on the sintering equipment, and the ore powder particles are bonded into blocks to form sinter for use in ironmaking blast furnaces. During the sintering process of fluorine-containing iron concentrate, the liquid phase produced by the solid phase reaction has low viscosity and high fluidity, and most of the sintered ore has a thin-walled porous structure. There is a certain gap. Therefore, the reducibility of fluorine-containing sintered ore is good, but the pulverization performance of low-temp...

Claims

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Application Information

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IPC IPC(8): C22B1/16
Inventor 康文革汪俊玲赵永红付国伟张永
Owner BAOTOU IRON & STEEL GRP
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