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Detection method of sulfur content adsorbed on coke surface

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, good accuracy and low labor intensity

Active Publication Date: 2018-11-23
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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  • Detection method of sulfur content adsorbed on coke surface

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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 detection method of the sulfur content adsorbed on the coke surface, and solves the technical problem that the sulfur content adsorbed on the coke surface in the prior art cannot be detected. The detection method of the sulfur content adsorbed on the coke surface is characterized by comprising the following steps of (1) preparing a test specimen; (2) preparing a solutionto be tested; (3) testing the spectral intensity of a sulfur element in the solution to be tested by an inductive coupling plasma emission spectrometer; (4) calculating the sulfur adsorption contenton coke surface to be tested. The method provided by the invention has the advantages that the accurate detection of the sulfur content adsorbed on the coke surface is realized; the detection data ishigh in precision; the accuracy is high; the operation is simple and convenient; the work intensity is low; the operability is high.

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 Applications(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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