Metallurgy sintering synergist as well as preparation method and application thereof

A sintering synergist and synergist technology, applied in the field of metallurgical sintering, can solve the problems of insufficient consideration of the reducibility of sinter, insufficient consideration of the sintering process, high cost of use, etc., to achieve good granulation effect, improvement of reducibility, Optimize the effect of slag system

Active Publication Date: 2022-05-06
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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  • Metallurgy sintering synergist as well as preparation method and application thereof
  • Metallurgy sintering synergist as well as preparation method and application thereof
  • Metallurgy sintering synergist as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A metallurgical sintering synergist is prepared from the following raw materials in mass percentage: steel slag 55%, polyethylene glycol 1%, fluorite 3%, potassium permanganate 1%, hydrogen peroxide 1.5%, ammonium metavanadate 2%, waste activated carbon 1%, and the rest is water.

[0026] The steel slag comprises the following components: calcium oxide 34.63%, TFE 18.15%, silica 13.55%, magnesium oxide 11.36%, aluminum oxide 5.93% and MnO 1.35%.

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

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

[0029] In this embodiment, the preparation method of the synergist comprises the following steps:

[0030] (1) The steel slag is dried and crushed. The particle size of the crushed steel slag is - 1mm, accounting for 95% and - 0.1mm, accounting for 65%;

[0031] (2) Weigh polyethylene glycol, fluorite, pota...

Embodiment 2

[0034] A metallurgical sintering synergist is prepared from the following raw materials in terms of mass percentage: steel slag 58%, polyethylene glycol 1%, fluorite 3.5%, potassium permanganate 1%, hydrogen peroxide 2%, ammonium metavanadate 2.5%, waste activated carbon 1.2%, and the rest is water.

[0035] The steel slag comprises the following components: calcium oxide 34.63%, TFE 18.15%, silica 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 sintering flue gas desulfurization and denitration process.

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

[0038] In this embodiment, the preparation method of the synergist comprises the following steps:

[0039] (1) The steel slag is dried and crushed. The particle size of the crushed steel slag is - 1mm, accounting for 95% and - 0.1mm, accounting for 65%;

[0040] (2) Weigh polyethylene glycol, fluo...

Embodiment 3

[0043] A metallurgical sintering synergist is prepared from the following raw materials in mass percentage: steel slag 59%, polyethylene glycol 1.1%, fluorite 3.5%, potassium permanganate 1.1%, hydrogen peroxide 2%, ammonium metavanadate 2.7%, waste activated carbon 1.3%, and the rest is water.

[0044] The steel slag comprises the following components: calcium oxide 34.63%, TFE 18.15%, silica 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 sintering flue gas desulfurization and denitration process.

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

[0047] In this embodiment, the preparation method of the synergist comprises the following steps:

[0048] (1) The steel slag is dried and crushed. The particle size of the crushed steel slag is - 1mm, accounting for 95% and - 0.1mm, accounting for 65%;

[0049] (2) Weigh polyethylene glycol, fluorite,...

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Abstract

The invention discloses a metallurgical sintering synergist as well as a preparation method and application thereof. The synergist is prepared from the following raw materials in percentage by weight: 35-65% of steel slag, 0.1-2% of polyethylene glycol, 2-8% of fluorite, 0.05-2.5% of potassium permanganate, 0.5-8% of hydrogen peroxide, 1-5% of ammonium metavanadate, 0.5-2% of waste activated carbon and the balance of water. By optimizing the compound substances and using the synergist, the rotary drum quality of the sintered ore can be improved, the vertical sintering speed can be increased, the particle size composition of the sintered ore can be improved, RDI + 3.15 can be improved, the reduction degree and the molten drop performance can be improved, and the energy consumption can be reduced.

Description

technical field [0001] The invention belongs to the technical field of metallurgical sintering, in particular to a metallurgical sintering synergist and a preparation method and application thereof. Background technology [0002] In steelmaking production, blast furnace ironmaking must first burn the mixed ore into sinter through the sintering machine. Therefore, the sintering machine undertakes the main task of providing high-quality sinter to the blast furnace. Due to the diversification of purchased ores, the unstable proportion of imported ores, the complex domestic ore sources and the increase of fine powder content, the return ore of blast furnace increases (25% - 30%), the powder pollution is serious, the ore source loss is large, and the problems are more prominent, which has become one of the main contradictions in the process optimization of pre system in iron and steel enterprises. According to the practical experience of adding BM synergist to improve quality and effi...

Claims

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Application Information

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Patent Type & Authority Applications(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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