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Equipment and method for testing the smelting performance of blast furnace lumpy iron ore

A technology of testing device and testing method, which is applied in the field of ironmaking production, and can solve the problems of consuming a lot of manpower and material resources, being unable to monitor changes in gas permeability of material columns, and different heating speeds of ores.

Active Publication Date: 2022-03-22
ANGANG STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

(3) In the actual blast furnace, there is a certain area of ​​"heat reserve area" in the lower part of the massive belt, as described in Document 1 (ISIJ International, 2008, 48(7): 918-924.), the heating rate of the ore in this area It is obviously lower than the middle and upper part of the massive zone, that is, the heating rate of the ore is different in the massive zone of the blast furnace, and the traditional pulverization test method does not consider this actual situation
(4) The final test result and evaluation index of the traditional pulverization test is the particle size distribution of the ore after the reduction reaction, which is difficult to intuitively and effectively characterize the deterioration degree of the ore seam air permeability, and it is impossible to carry out the change of the air permeability of the material column during the heating reduction process. monitor
In order to understand the reduction behavior of ore in the blast furnace block zone and its influence on the gas permeability of the material layer, it is necessary to design a test device and related methods that can better simulate the actual situation of the blast furnace. The effect on the air permeability of the material layer has not been reported yet
[0005] Since domestic construction of a simulated blast furnace to test the pulverization performance of iron ore requires a lot of manpower and material resources, it is not easy to realize its popularization and application

Method used

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  • Equipment and method for testing the smelting performance of blast furnace lumpy iron ore
  • Equipment and method for testing the smelting performance of blast furnace lumpy iron ore
  • Equipment and method for testing the smelting performance of blast furnace lumpy iron ore

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Embodiment 1

[0030] Blast furnace massive belt iron ore smelting performance testing device, such as figure 1 As shown, it includes nitrogen cylinder 1-1, carbon monoxide cylinder 1-2, nitrogen mass flowmeter 1-3, carbon monoxide mass flowmeter 1-4, gas mixing tank 1-5, reaction gas mass flowmeter 1-6 and The computer control system 1-7 also includes a smelting performance testing system; the smelting performance testing system consists of a reaction tube 1-11, a heating furnace 1-10, an air inlet 1-9, a hopper 1-8, a lifting and insulating mechanism 1-12, Exhaust pipe 1-13 and discharge valve 1-14; the reaction pipe is made of heat-resistant stainless steel pipe with an inner diameter of 75mm, and its effective length can hold 8 sections of samples, each section of which contains 500g of iron ore and 100g of coke; The gas inlet and hopper are set at the upper end of the reaction tube, the exhaust port and the discharge valve are set at the lower end of the reaction tube; the heating furna...

Embodiment 2

[0039] Blast furnace massive belt iron ore smelting performance testing device, such as figure 1 As shown, it includes nitrogen cylinder 1-1, carbon monoxide cylinder 1-2, nitrogen mass flowmeter 1-3, carbon monoxide mass flowmeter 1-4, gas mixing tank 1-5, reaction gas mass flowmeter 1-6 and The computer control system 1-7 is characterized in that it also includes a smelting performance testing system; the smelting performance testing system consists of a reaction tube 1-11, a heating furnace 1-10, a gas inlet 1-9, a hopper 1-8, and a lifting and insulating mechanism 1 -12. The exhaust pipe 1-13 and the discharge valve 1-14 are composed; the reaction tube is made of a heat-resistant stainless steel tube with an inner diameter of 80mm, and its effective length can hold 8 sections of samples, each section of which contains 500g of iron ore and Coke 100g; the gas inlet and hopper are set at the upper end of the reaction tube, the exhaust port and the discharge valve are set at t...

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Abstract

The invention discloses a test device for the smelting performance of blast furnace block iron ore, which includes a gas transmission system and a test system. The test system includes a hopper and a reaction tube connected with the hopper. Equipped with a temperature control couple and connected to the computer control system, the bottom of the heating furnace is connected to the lifting and heat preservation mechanism, which pushes the heating furnace to move around the reaction tube and keep the reaction tube warm; the lower part of the reaction tube is equipped with an exhaust pipe, and the bottom is equipped with a discharge valve; The gas delivery device is connected to the gas inlet of the hopper.

Description

technical field [0001] The invention belongs to the technical field of ironmaking production, in particular to a device and method for testing the smelting performance of a blast furnace lump iron ore. Background technique [0002] Blast furnace smelting is carried out in the process of falling charge and rising gas. In order to achieve the stability, smooth running, high production and long life of the blast furnace, it is necessary to ensure that the material layer has good air permeability. In the massive zone of the blast furnace, the reduction and pulverization of the ore may cause a decrease in the gas permeability of the material layer and an imbalance in the distribution of the gas flow, which will have an adverse effect on the forward movement and longevity of the blast furnace. Cultural research is very meaningful. [0003] In order to master the reduction pulverization performance of ore, the predecessors have formulated a low-temperature reduction pulverization...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N5/04
CPCG01N5/04
Inventor 周明顺王义栋赵东明顾颜李仲张辉翟立委刘杰徐礼兵吴远飞袁慧
Owner ANGANG STEEL CO LTD