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A kind of metallurgical sintering synergist and its preparation method and application

A technology of sintering synergist and synergist, which is applied in the field of metallurgical sintering, can solve the problems of insufficient consideration of the reducibility of sintered ore, insufficient consideration of the sintering process, and high use cost, and achieves good granulation effect, improved reducibility, Optimizing the effect of the slag system

Active Publication Date: 2022-07-26
云南科兴环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the patent document CN110527824A reports a kind of multi-metal additive, and the use cost is high; the patent document CN105907951A reports a kind of ore-based sintering additive, but does not fully consider the reducibility of sintered ore in the sintering process; the patent document CN101245411A reports A sintering composite additive is used, which uses the rare earth metal cerium nitrate, which is costly and contains a large amount of basic elements
It can be seen that in the prior art, the use of synergists has the disadvantages of high cost, insufficient consideration of the simultaneous improvement of sintering process and sinter performance, etc.

Method used

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  • A kind of metallurgical sintering synergist and its preparation method and application
  • A kind of metallurgical sintering synergist and its preparation method and application
  • A kind of metallurgical sintering synergist and its preparation method and application

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Effect test

Embodiment 1

[0025] A metallurgical sintering synergist is prepared from the following raw materials by mass percentage: 55% steel slag, 1% polyethylene glycol, 3% fluorite, 1% potassium permanganate, 1.5% hydrogen peroxide, vanadium metabolite Ammonium acid 2%, waste activated carbon 1%, and the balance water.

[0026] Wherein, the steel slag contains the following components: calcium oxide 34.63%, TFe 18.15%, silicon dioxide 13.55%, magnesium oxide 11.36%, aluminum oxide 5.93%, MnO 1.35%.

[0027] Wherein, the waste activated carbon is the activated carbon produced in the process of sintering flue gas desulfurization and denitrification.

[0028] Wherein, the fixed carbon content of the waste activated carbon is 80%wt.

[0029] In the present embodiment, the preparation method of the above-mentioned synergist comprises the following steps:

[0030] (1) The steel slag is dried and then crushed. The particle size of the crushed steel slag is as follows: the steel slag with a particle siz...

Embodiment 2

[0034] A metallurgical sintering synergist, calculated by mass percentage, is prepared from the following raw materials: 58% steel slag, 1% polyethylene glycol, 3.5% fluorite, 1% potassium permanganate, 2% hydrogen peroxide, vanadium metabolite Ammonium acid 2.5%, waste activated carbon 1.2%, and the balance is water.

[0035] The steel slag contains the following components: calcium oxide 34.63%, TFe 18.15%, silicon dioxide 13.55%, magnesium oxide 11.36%, aluminum oxide 5.93%, MnO 1.35%.

[0036] Wherein, the waste activated carbon is the activated carbon produced in the process of sintering flue gas desulfurization and denitrification.

[0037] Wherein, the fixed carbon content of the waste activated carbon is 80%wt.

[0038] In the present embodiment, the preparation method of the above-mentioned synergist comprises the following steps:

[0039] (1) The steel slag is dried and then crushed. The particle size of the crushed steel slag is as follows: the steel slag with a p...

Embodiment 3

[0043] A metallurgical sintering synergist, calculated by mass percentage, is prepared from the following raw materials: 59% steel slag, 1.1% polyethylene glycol, 3.5% fluorite, 1.1% potassium permanganate, 2% hydrogen peroxide, vanadium metabolite Ammonium acid 2.7%, waste activated carbon 1.3%, and the balance is water.

[0044]The steel slag contains the following components: calcium oxide 34.63%, TFe 18.15%, silicon dioxide 13.55%, magnesium oxide 11.36%, aluminum oxide 5.93%, MnO 1.35%.

[0045] Wherein, the waste activated carbon is the activated carbon produced in the process of sintering flue gas desulfurization and denitrification.

[0046] Wherein, the fixed carbon content of the waste activated carbon is 80%wt.

[0047] In the present embodiment, the preparation method of the above-mentioned synergist comprises the following steps:

[0048] (1) The steel slag is dried and then crushed. The particle size of the crushed steel slag is as follows: the steel slag with ...

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Abstract

The invention discloses a metallurgical sintering synergist and a preparation method and application thereof. By weight percentage, the synergist is prepared from the following raw materials: steel slag 35~65%, polyethylene glycol 0.1~2%, fluorite 2~8%, potassium permanganate 0.05~2.5%, hydrogen peroxide 0.5~ 8%, ammonium metavanadate 1~5%, waste activated carbon 0.5~2%, and the balance is water. The invention can improve the quality of the sintered ore drum, improve the vertical sintering speed, improve the particle size composition of the sintered ore, and improve the RDI by optimizing the compound material and the use of the synergist. +3.15 , improve the reduction degree and droplet performance, reduce energy consumption.

Description

technical field [0001] The invention belongs to the technical field of metallurgical sintering, and particularly relates to a metallurgical sintering synergist and a preparation method and application thereof. Background technique [0002] In the steelmaking production, the blast furnace ironmaking must first pass the mixed ore through the sintering machine to sinter the sintered ore. Therefore, the sintering machine undertakes the main task of supplying high-quality sinter to the blast furnace. Due to the diversification of purchased ores, the unstable ratio of imported ores, the complex source of domestic ores and the increase in the content of fine powders and other factors, the return of blast furnace ore increases (25%-30%), the powder pollution is serious, and the loss of mineral resources is large. It is more prominent, which has become one of the main contradictions in the optimization of the pre-system process of the iron and steel enterprises. According to the pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B1/16C22B1/14C21B3/04
CPCC22B1/16C22B1/24C21B3/04C21B2200/00C21C2200/00Y02W30/50
Inventor 戴祥戴瑞根
Owner 云南科兴环保科技有限公司
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