Iron coke preparation method by high titanium type schreyerite sintering return mine and prepared iron coke thereof

A technology for sintering and returning ore and vanadium-titanium ore, which is applied in the field of iron and coke, can solve the problems of re-consumption of fuel and increase of iron-making costs, and achieve the effects of reducing processing costs, improving coking effects, obvious application prospects and economic benefits.

Active Publication Date: 2018-12-28
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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  • Abstract
  • Description
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Problems solved by technology

[0005] Therefore, in view of the problem that the reburning of the returned ore with a particle size of <1mm needs to consume fuel again and increase the cost of ironmaking, a method for directly preparing iron coke from the returned ore with a particle size of <1mm has been researched and developed, which can reduce sintering The processing cost of returning ore has obvious application prospects and economic benefits

Method used

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  • Iron coke preparation method by high titanium type schreyerite sintering return mine and prepared iron coke thereof

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Embodiment 1

[0059] A method for preparing iron coke by sintering and returning high-titanium vanadium-titanium ore, said method comprising the following steps:

[0060] (a), first sieve the high-titanium vanadium-titanium ore sintered and returned ore, collect the returned ore with a particle size of less than 1 mm, and then mix the returned ore with a particle size of less than 1 mm and low-quality coal at a mass ratio of 10:90, The mixing of the returned ore with a particle size of less than 1mm and inferior coal is mechanically mixed in a V-shaped mixer, the mixing speed is 10r / min, and the mixing time is 8min to obtain the mixture A;

[0061] (b), the mixture A is added into a mold whose size is (5mm) × (5mm) × (5mm), and hot-pressed at 300°C and under a pressure of 120kN to obtain the coal-formed material, and then the coal-formed material and The high-quality coal is mixed with a mass ratio of 20:80, and the mixing of the shaped coal material and the high-quality coal is mechanicall...

Embodiment 2

[0064] A method for preparing iron coke by sintering and returning high-titanium vanadium-titanium ore, said method comprising the following steps:

[0065] (a) First, sieve the high-titanium vanadium-titanium ore sintered and returned ore, collect the returned ore with a particle size of less than 1 mm, and then mix the returned ore with a particle size of less than 1 mm and low-quality coal at a mass ratio of 30:70, The mixing of the returned ore with a particle size of less than 1mm and inferior coal is mechanically mixed in a V-shaped mixer, the mixing speed is 30r / min, and the mixing time is 15min to obtain the mixture A;

[0066] (b), adding the mixture A into a mold whose size is (15mm) × (15mm) × (15mm), hot pressing at 400°C and 150kN pressure to obtain the shaped coal material, and then the shaped coal material and The high-quality coal is mixed evenly with a mass ratio of 40:60, and the mixing of the shaped coal material and the high-quality coal is mechanically mix...

Embodiment 3

[0069] A method for preparing iron coke by sintering and returning high-titanium vanadium-titanium ore, said method comprising the following steps:

[0070] (a), first sieve the high-titanium vanadium-titanium ore sintered and returned ore, collect the returned ore with a particle size of less than 1 mm, and then mix the returned ore with a particle size of less than 1 mm and low-quality coal at a mass ratio of 10:90, The mixing of the returned ore with a particle size of less than 1mm and inferior coal is mechanically mixed in a V-shaped mixer, the mixing speed is 20r / min, and the mixing time is 8-15min to obtain the mixture A;

[0071] (b), adding the mixture A into a mold whose size is (10mm) × (10mm) × (10mm), hot pressing at 350°C and a pressure of 140kN to obtain the briquette material, and then the briquette material and The high-quality coal is mixed evenly with a mass ratio of 30:70, and the mixing of the shaped coal material and the high-quality coal is mechanically ...

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Abstract

The invention provides an iron coke preparation method by high titanium type schreyerite sintering return mine and prepared iron coke thereof, and relates to the technical field of ferrous metallurgy.The iron coke preparation method by high titanium type schreyerite sintering return mine comprises the following steps that the high titanium type schreyerite sintering return mine is screened, and return mine with diameter less than 1mm is collected; the return mine with diameter less than 1mm is mixed with inferior coal and is added into a die for heat pressing forming to obtain coal-like materials; and the coal-like materials are mixed with high quality coal for coking to obtain the iron coke. The return mine with diameter less than 1mm is directly applied to iron coke production, and therefore the machining cost of return mine sintering can be greatly lowered, the inferior coal coking effect is obviously improved, intensity is significantly improved, and obvious application prospect and economic benefit for iron and steel metallurgical enterprises are achieved.

Description

technical field [0001] The invention relates to the technical field of iron and steel metallurgy, in particular to a method for preparing iron coke by sintering and returning high-titanium vanadium-titanium ore and the prepared iron coke. Background technique [0002] At present, the world's high-quality iron ore resources have begun to enter a period of depletion, the source of raw materials is extremely tight, and the doubled price of iron ore has caused great pressure on the cost of steel products and the economic benefits of enterprises. Under the condition of high cost of existing raw materials, how to improve the efficiency of enterprises has become the primary consideration of enterprise operators. Therefore, the rational utilization of sintered ore returns has been more and more valued by enterprises. [0003] Sinter return refers to incompletely sintered sinter, including sinter along the sides and surface of the sintering machine trolley, powder produced after bein...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21B5/00C22B1/245
CPCC21B5/007C22B1/245
Inventor 胡鹏饶家庭黄先佑唐文博
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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