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High-temperature metallurgy reduction performance detection and sampling device and method

A sampling device and performance technology, applied in the field of metallurgy, can solve problems such as the influence of the accuracy of experimental results, the destruction of the original shape, and the inability to observe changes in the structure and shape of materials.

Inactive Publication Date: 2018-12-21
UNIV OF SCI & TECH LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For traditional reduction performance testing equipment and methods, the reacted materials need to be slowly cooled before they can be taken out, which not only damages the original shape of the materials at high temperature, but also makes it impossible to observe high temperature in subsequent analysis. At the same time, the reduction performance of the material measured after slow cooling is also quite different from that at high temperature, which has a serious impact on the accuracy of the experimental results.

Method used

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  • High-temperature metallurgy reduction performance detection and sampling device and method
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  • High-temperature metallurgy reduction performance detection and sampling device and method

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0041] This embodiment is to measure the reduction process of a single sintered ore at two fixed temperatures for 180 minutes.

[0042] Table 1 Experimental raw materials and ingredients / %

[0043] raw material ore

TF

FeO

CaO

MgO

SiO 2

Particle size / mm

Sinter

56.90

8.10

11.91

1.67

6.21

10～12

[0044] The relevant data parameters of the sintered ore are shown in Table 1.

[0045] Regarding this embodiment, the specific experimental implementation process is as follows.

[0046] (1) Turn on the program control and data acquisition system to start the furnace program, and first set the heating temperature of the furnace body to 750°C according to the required experimental conditions, the heating rate is 15°C / min, and the holding time is 200min.

[0047] (2), first weigh 2Kg of the sample to be tested, and then put it into the crucible to be reacted for later use.

[0048] (3) Before the temperature reaches the ex...

Embodiment 2

[0056] This example is a simulated measurement of the reduction process of a certain blast furnace mixture in which the temperature is gradually raised in the furnace.

[0057] The composition of the main iron-containing charge is shown in Table 3. The proportion of the ingredients is sinter: pellet: lump ore = 7:2:1, and an additional 20% of coke is added to simulate the structure of the blast furnace charge.

[0058] Table 3 Chemical or chemical properties of different charge

[0059] sample

TFe,%

FeO,%

CaO, %

MgO, %

SiO 2 ,%

Sinter

58.35

9.43

10.41

1.72

5.45

Pellet

61.90

0.50

0.70

0.82

7.65

lump ore

62.60

-

-

-

2.75

[0060] Regarding this embodiment, the specific experimental implementation process is as follows.

[0061] (1) Turn on the program control and data acquisition system to start the furnace program, and first set the heating temperature of the furnace body to 1...

Embodiment 3

[0068] Example 3: This example is to measure the zinc-iron reduction and separation performance of gas ash, a solid waste in the metallurgical process. The composition of the gas ash is shown in Table 5.

[0069] Table 5 Composition of blast furnace gas ash, %

[0070] Element

TF

FeO

Fe 2 o 3

ZnO

CaO

MgO

al 2 o 3

C

FeS

MnO

TiO 2

SiO 2

content

30.9

7.53

34.6

1.17

4.49

2.74

2.04

25.23

3.32

0.071

0.72

7.05

[0071] Regarding this embodiment, the specific experimental implementation process is as follows.

[0072] (1) Turn on the program control and data acquisition system to start the furnace program, and first set the heating temperature of the furnace body to 1100°C according to the required experimental conditions, the heating rate is 15°C / min, and the holding time is 35min.

[0073] (2), first weigh 2Kg of the sample to be tested, and then put it into the cruc...

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Abstract

The invention relates to the field of metallurgy, in particular to a method and device for measuring reduction performance of iron ore and metallurgical furnace material and taking a high-temperaturesample and an application method of the device. Compared with the same similar measurement device, the device has the advantage of higher accuracy, more reactants are used, and the experiment detection result reproducibility is better. The device comprises a furnace body, wherein an electrical heating body, a thermocouple and a crucible are arranged in the furnace body, the thermocouple is used for measuring a real-time temperature during the heating process, the crucible is loaded with a sample to be detected, a reaction region and the heating body in the furnace body are partitioned by a layer of alundum tube, the other parts of the reaction region are filled with heat-preservation materials, a rotatable opening is formed in the bottom of the furnace body, a cooling box is arranged at aposition, right opposite to the position of the rotatable opening, below the furnace body, an air inlet is formed in a position below the alundum tube, the air inlet is connected with a pre-heating device, the pre-heating device is connected with a gas constituent and flow control device, and the gas constituent and flow control device is connected with each gas bottle.

Description

technical field [0001] The invention relates to the field of metallurgy, and is particularly suitable for the measurement of reduction properties of iron ore and metallurgical charge, a method for sampling high-temperature samples, a device and a method for using the device. Background technique [0002] The essence of the process of smelting pig iron in blast furnace is the reduction process of iron-containing compounds. The ironmaking principle of blast furnace is actually to use coke as solid fuel in smelting and reducing agent in chemical reaction. sinter, etc.) containing iron and iron multiple compounds, from the state of oxides or other minerals (such as Fe 2 o 3 , Fe 3 o 4 , Fe 2 SiO 4 etc.) carry out the metal reduction reaction at high temperature and then form the chemical reaction process of liquid pig iron. [0003] In the process of smelting pig iron in the blast furnace, it can be divided into five areas from top to bottom in the blast furnace: the mass...

Claims

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Application Information

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IPC IPC(8): G01N5/04G01N1/04
CPCG01N1/04G01N5/04
Inventor 何志军仇爽尹冉冉闫寒田晨邸航张军红湛文龙庞清海
Owner UNIV OF SCI & TECH LIAONING