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Verification method for accelerating coke solution loss reaction of potassium, sodium, calcium and magnesium adsorbed on surface of coke in blast furnace ironmaking process and application thereof

A technology of blast furnace ironmaking and verification method, which is applied in the field of blast furnace ironmaking and smelting, can solve the problems of coke moisture residue and error of test results, etc., and achieve the effect of improving reactivity, good accuracy and short time consumption

Active Publication Date: 2020-02-11
YANGCHUN NEW STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, the research on alkaline earth metals in coke usually uses alkali leaching test to add target metal elements. This method tends to cause moisture residue in coke, resulting in large errors in test results.

Method used

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  • Verification method for accelerating coke solution loss reaction of potassium, sodium, calcium and magnesium adsorbed on surface of coke in blast furnace ironmaking process and application thereof
  • Verification method for accelerating coke solution loss reaction of potassium, sodium, calcium and magnesium adsorbed on surface of coke in blast furnace ironmaking process and application thereof

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Effect test

Embodiment 1

[0037]Embodiment 1: A method for verifying that potassium, sodium, calcium, and magnesium adsorbed on the surface of coke accelerate the dissolution reaction of coke in the blast furnace ironmaking process, comprising the following steps:

[0038] Sample preparation: take coke samples, one part without any treatment, and the other part makes the sample uniformly attached to the target metal elements such as potassium, sodium, calcium, magnesium, etc.: the coke output from the coke oven is transferred to the blast furnace through an automatic transmission system, During the conveying process, the coke is cooled by a temperature cooling device. When the temperature of the coke reaches the melting point of the target metal-organic powder, a powder spraying system with a mesh structure is used to uniformly spray a certain amount of powdered organic compound containing the target metal on the coke. The coke heat melts and disperses the organic powder, so that the organic powder is f...

Embodiment 2

[0059] Embodiment 2: An intelligent device that improves coke blast furnace reactivity by controlling the addition of coke alkaline earth metal, which includes coke oven 1, blast furnace 2, transmission system, powder spraying system 5, spraying rate control system 7, cooling system 3, Temperature control system 4, load cell 6, computer system 8; wherein the outlet of coke oven 1 and the inlet of blast furnace 2 are connected through the transmission system, and there are powder coating system 5 and cooling system 3 on the transmission system, powder coating system 5 and spraying The rate control system 7 is connected to each other, the powder spraying system 5 is used to spray the target organic metal powder on the coke on the transmission system, the spraying rate control system 7 controls the spraying rate of the organic metal powder, and the cooling system 3 is used to accurately cool the coke The heavy sensor is connected to the powder spraying system, the temperature cont...

Embodiment 3

[0060] Example 3: A control method for an intelligent device that improves the reactivity of coke blast furnaces. The coke output from the coke oven is transferred to the blast furnace through an automatic transmission system. During the transfer process, the coke is cooled by a temperature cooling device. When the temperature of the coke is slightly higher At the melting point of the target metal-organic powder, a powder spraying system with a mesh structure is used to uniformly spray a certain amount of powdered organic compound containing the target metal on the coke, and the heat of the coke is used to melt and disperse the organic powder, so that the organic powder is fully attached to the charred surface. The certain amount of powdered organic compound containing the target metal is the target alkaline earth metal addition amount that is beneficial to improving coke reactivity obtained through the above-mentioned verification method. The target alkaline earth metal can b...

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Abstract

The invention discloses a verification method for accelerating a coke solution loss reaction of potassium, sodium, calcium and magnesium adsorbed on the surface of coke in a blast furnace ironmaking process. The method comprises the following steps: preparing a sample; detecting the reactivity and post-reaction strength of an original coke ball sample; detecting contents of potassium, sodium, calcium and magnesium in coke; and detecting and acquiring the reactivity and post-reaction strength of the coke ball sample adsorbed with alkali metals, and the like. According to the method, the traditional alkali leaching operation is replaced by spraying of organic metal powder and the residual temperature of the coke is accurately controlled; metal powder is fully molten by utilizing the residualtemperature and the metal powder is fully dispersed and attached to the surface of the coke, so that a defect that the moisture is difficult to completely dry after alkaline leaching in the traditional alkaline leaching process is overcome. The method has advantages of high detection data precision, high accuracy, simple operation, low labor intensity, and high operability.

Description

technical field [0001] The invention relates to the technical field of blast furnace ironmaking and smelting, and more specifically relates to a method for verifying that potassium, sodium, calcium and magnesium adsorbed on the surface of coke accelerate the dissolution reaction of coke during the blast furnace ironmaking process. Background technique [0002] Most of the domestic long-process iron and steel complexes are equipped with coking plants. In the coking plant, desulfurization waste liquid, residual ammonia water in the coking process, denitrification waste liquid, scaling washing water of power generation boilers, biochemical dephenolization water, etc. directly enter the coke quenching pool. , participate in the water quenching operation, resulting in k+, Na+, Ca in the quenching water 2+ , Mg 2+ , S, N and other substances are adsorbed on the surface of coke. [0003] Coke is widely used as a smelting fuel in metallurgical enterprises. Coke with potassium, sod...

Claims

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Application Information

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IPC IPC(8): G01N21/73G01N5/04
CPCG01N5/04G01N21/73
Inventor 樊尧桂程祥刘林刚郑呈祥刘涛
Owner YANGCHUN NEW STEEL CO LTD