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A method for detecting the content of adsorbed sulfur on the surface of coke

A technology of surface adsorption and detection method, which is applied in the field of chemical analysis, can solve the problem of unable to detect the content of adsorbed sulfur on the surface of coke, and achieve the effect of meeting the requirements of process parameter control, strong operability and high precision

Active Publication Date: 2021-06-08
SHANGHAI MEISHAN IRON & STEEL CO LTD
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Problems solved by technology

[0008] The purpose of the present invention is to provide a detection method for the content of adsorbed sulfur on the surface of coke, solve the technical problem that the content of adsorbed sulfur on the surface of coke cannot be detected, and provide data support for the acceptance of coke quality and the adjustment of blast furnace ironmaking process

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  • A method for detecting the content of adsorbed sulfur on the surface of coke

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Embodiment Construction

[0019] A method for detecting the adsorbed sulfur content on the surface of coke, comprising the following steps:

[0020] 1) Prepare a representative coke sample, take 20kg of coke and sieve it, and get 2kg of 30mm block coke as an analysis sample;

[0021] 2) Prepare the solution to be tested, weigh 300g of the analysis sample with a digital display electronic balance, place it in a beaker 1 with a volume of 1000ml, add 500ml of secondary deionized water and 10ml of non-ionized water with a volume ratio of 3:7 to the beaker Immerse the sample in the mixed solution of surfactant OP-10 and Span40, cover the beaker 1 with a watch glass, place the beaker 1 covered with the watch glass in the ultrasonic oscillator for 4 hours, and take out the beaker 1 from the ultrasonic oscillator , use quantitative slow filter paper to filter the solution in beaker 1 to obtain the filtrate, transfer the filtrate to the beaker 2 with a volume of 200ml, and take 10ml of the filtrate from the bea...

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Abstract

The invention relates to a method for detecting the adsorbed sulfur content on the coke surface, which solves the technical problem that the existing coke surface adsorbed sulfur content cannot be detected. The technical scheme of the present invention is: a kind of detection method of coke surface adsorption sulfur content, comprises the following steps: 1) preparation sample; 2) preparation test solution; 4) Calculate the content of adsorbed sulfur on the surface of the coke to be measured. The invention realizes the accurate measurement of the adsorbed sulfur content on the coke surface, and the detection data has high precision, good accuracy, simple operation, low labor intensity and strong operability.

Description

technical field [0001] The invention relates to a method for detecting the adsorbed sulfur content on the surface of coke, in particular to a method for measuring the adsorbed sulfur content on the surface of coke used for blast furnace smelting by using a leaching method, and belongs to the technical field of chemical analysis. Background technique [0002] Coke is formed by heating bituminous coal to 950-1050°C under the condition of isolating the air, and going through stages of drying, pyrolysis, melting, bonding, solidification, and shrinkage. It is mainly used as a fuel for blast furnace smelting. [0003] In blast furnace smelting, 80% of the sulfur is brought in by coke, and the rest is brought in by ore, solvent and other furnace materials. The blast furnace gas passes through the dripping zone, soft melting zone and massive zone on the way up, and the sulfur content is large. Part of it is absorbed by slag, iron and charge, forming a sulfur cycle in the furnace, an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/73G01N1/28
CPCG01N1/28G01N21/73
Inventor 胡宏卫张文成陈信钢王海军
Owner SHANGHAI MEISHAN IRON & STEEL CO LTD
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