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Method for preparing sintered ores by adding common iron ores to high-titanium vanadium-titanium magnetite

A technology of vanadium-titanium magnetite and high-titanium type, which is applied in the field of high-titanium vanadium-titanium magnetite mixed with ordinary iron ore to prepare sintered ore, which can solve the problem that the utilization of low-grade ore cannot meet the requirements of vanadium-titanium magnetite. Furnace requirements and other issues, to achieve the effect of effective resource utilization, good droplet performance, and cost reduction

Inactive Publication Date: 2018-11-23
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

According to the production requirements of traditional industrial blast furnaces, the vanadium-titanium magnetite in western Liaoning is far from meeting the furnace requirements
Therefore, no matter from the perspective of ore dressing or the traditional production process of ironmaking, vanadium extraction, and titanium extraction, it cannot meet the utilization of low-grade ores like Liaoxi vanadium-titanium magnetite.

Method used

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  • Method for preparing sintered ores by adding common iron ores to high-titanium vanadium-titanium magnetite
  • Method for preparing sintered ores by adding common iron ores to high-titanium vanadium-titanium magnetite
  • Method for preparing sintered ores by adding common iron ores to high-titanium vanadium-titanium magnetite

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Embodiment 1

[0034] Table 1 Main composition / mass percentage of ore

[0035] name

TF

CaO

MgO

SiO 2

Al 2 o 3

FeO

TiO 2

V 2 o 5

High Titanium Vanadium Titanium Magnetite

43.83

4.04

0.79

7.07

1.86

18.01

21.81

0.97

common iron ore

67.67

1.7

0.30

4.06

0.73

12.31

Return to mine

40.43

11.60

1.09

7.27

2.13

20.12

0.89

blast furnace ash

32.39

5.16

1.79

5.95

2.69

1.79

0.25

[0036] A method for preparing sintered ore by adding high-titanium vanadium-titanium magnetite to ordinary iron ore, the preparation process is as follows figure 1 Shown, ore composition is as shown in table 1, and this method comprises:

[0037] (1) Mixing materials: 20kg of high-titanium vanadium-titanium magnetite, 41kg of ordinary iron ore, 9.9kg of lime powder, 2kg of dolomite, 19kg of returned ore, 5kg of coke and coal powder, the weight of ...

Embodiment 2

[0046] A method for preparing sintered ore by adding high-titanium vanadium-titanium magnetite to ordinary iron ore, the preparation process is as follows figure 1 Shown, ore component is as shown in table 1, and other steps are identical with embodiment 1, and difference is that the used raw material weight ratio of mixing step is different:

[0047] (1), the raw materials used in the mixing step include 26.6kg of high-titanium vanadium-titanium magnetite, 40kg of ordinary iron ore, 5.3kg of lime powder, 8.1kg of dolomite, 20kg of returned ore, 5kg of coke and coal dust, coal The weight of powder and coke is 2:1, and the blast furnace ash is 3kg.

[0048] (2), the method of the present invention utilizes high-titanium vanadium-titanium magnetite to add common iron ore to prepare high-titanium vanadium-titanium sintered ore, the firing rate is 85.45%, the transfer strength is 69.27%, and the low-temperature reduction pulverization rate RDI +3.15 At 90.39%, the reducing RI is ...

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Abstract

The invention belongs to the field of production for iron-making raw materials, and specifically relates to a method for preparing sintered ores by adding common iron ores to high-titanium vanadium-titanium magnetite. The method comprises the steps of mixing, granulation, distribution and sintering, wherein raw materials used in the step of mixing comprise the following components in parts by weight: 10-30 parts of high-titanium vanadium-titanium magnetite, 30-50 parts of common iron ores, 5-10 parts of lime powder, 2-10 parts of dolomite, 10-20 parts of return fines, 0.5-3 parts of blast-furnace dust and 5-5.5 parts of coke and / or pulverized coal. According to the method, the high-titanium vanadium-titanium sintered ores prepared by taking the high-titanium vanadium-titanium magnetite inwestern Liaoning, and the common iron ores as raw materials, is capable of getting out of a predicament that the production cost is increased due to excessive dependence on high-grade iron ores, saving energy, and lowering the cost; and effective utilization for resources is realized.

Description

technical field [0001] The invention belongs to the field of raw material production for ironmaking, and in particular relates to a method for preparing sintered ore by mixing high-titanium vanadium-titanium magnetite with ordinary iron ore. Background technique [0002] The vanadium-titanium magnetite mineral resource was discovered in 2008 in the Liaoxi area of ​​Liaoning Province, and the preliminary proven reserves of vanadium-titanium magnetite are more than 12 billion tons, which has the resource advantage of building a vanadium-titanium industrial base. The vanadium-titanium magnetite resource in western Liaoning belongs to a high-titanium and high-silicon type vanadium-titanium magnetite. Its total iron content is about 45%, and its titanium content is 25%. The iron resources in the vanadium-titanium magnetite in western Liaoning can be used in industries such as ironmaking and steelmaking, and the rich titanium resources can provide basic materials for the productio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B1/16C22B1/24
CPCC22B1/16C22B1/24
Inventor 周新磊程功金高子先薛向欣
Owner NORTHEASTERN UNIV LIAONING