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Method for determining saturated moisture of coke

A technology of coke and moisture, applied in the field of determination of saturated moisture in coke, to achieve the effect of reducing fuel consumption and cost

Active Publication Date: 2012-08-01
XINJIANG BAYI IRON & STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current method for measuring coke analysis base moisture is GB 2001-1991, and patents CN1482462 and CN201096762 all propose methods for automatically measuring coke analysis base moisture, but the method for measuring coke saturation moisture has not been reported

Method used

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  • Method for determining saturated moisture of coke

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Take 20kg of Shanxi coke with a moisture content of 0.66%, ash content of 14.26%, and a volatile content of 1.62%, and put it into a crusher for crushing. The sieves were sieved to record and calculate the coke content of each particle size. The calculated data after sieving are shown in Table 1. Put the sieved samples in a drying oven at 105°C for 4 hours, then take them out, and mix them according to the weight ratio of the particle size ranges in Table 1. The amount of ingredients is 3kg, and 2 parts are used as parallel samples. That is, the coke of 30-25mm is at a weight ratio of 47.1%, the coke of 25-20mm is at a weight ratio of 24.08%, the coke of 20-16mm is at a weight ratio of 13.31%, the coke of 16-8mm is at a weight ratio of 13.97%, 8 -5mm coke is batched according to the weight ratio of 1.54%. Put the prepared coke in the hanging basket and immerse it in water together. After soaking in water for 24 hours, take it out and hang it under the balance. Read the ...

Embodiment 2

[0026] Take 20kg of small Baosteel coke with a moisture content of 0.59%, ash content of Ad of 11.55%, and a volatile content of Vd of 0.89%, and put it into a crusher for crushing. Sieve the sieve with sieve holes to record and calculate the coke content of each particle size. The calculated data after sieving are shown in Table 2. Put the sieved sample in a drying oven at 105°C for 4 hours and take it out. Sieve as before. Data batching, one batch is 3kg, and two batches are used as parallel samples. Put the prepared coke in the hanging basket and immerse in water together. After soaking in water for 24 hours, take it out and hang it under the balance. Read the balance data once every 5 minutes. When the balance data remains unchanged within 5 minutes, it is considered to be saturated. At this time, the moisture content in the coke is the coke saturated moisture. Record the balance reading at this time, and the saturated moisture of Baosteel small coke is 9.18% through calcul...

Embodiment 3

[0030] Take 20kg of Shanxi coke with a water content of 0.8%, ash content of 14.40%, and a volatile content of 1.62%, and put it into a crusher for crushing. The crushed coke is screened with sieves of 30mm, 20mm, 12mm, and 5mm. Record and calculate the coke content of each particle size, and the calculated data after sieving are shown in Table 3. Put the sieved sample in a drying oven at 110°C for 5 hours, then take it out, and mix according to the weight ratio of the particle size ranges in Table 3. The amount of ingredients is 3kg, and 2 parts are used as parallel samples. Others are the same as in Example 1, and the saturated moisture of Shanxi coke is 13.01%.

[0031] Table 3 Coke particle size range

[0032] Particle size range

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Abstract

The invention discloses a method for determining saturated moisture of coke, comprising crushing treatment on the coke and drying treatment on the coke. The method comprises the following steps of: crushing appropriate amount of coke sample acquired from a production field, and screening the crushed coke according to different fractions within the particle size range of 5-30mm; placing the coke at different fractions into a drying box, and carrying out full forced air drying at the temperature of 95-115 DEG C; mixing the dried coke according to weight percentage of different fractions, and immersing the mixed coke into water to be fully soaked; and weighing the soaked coke on a balance, and calculating content of the saturated moisture of the coke when reading of the balance is stable. The invention provides a method for determining the saturated moisture of the coke for the coke with high moisture content in production, thus being beneficial to finding that whether excessive moisture is contained in the coke to judge whether excessive water is sprinkled into the coke, being beneficial to coke quality monitoring and improving use quality of the coke and being beneficial to reducing usage of the coke and production cost in a smelting reduction process.

Description

technical field [0001] The invention relates to the technical field of coke performance testing, in particular to a method for measuring saturated moisture in coke. Background technique [0002] Coke is the main fuel for the production of molten iron, which is mainly produced by pyrolysis of coal under high temperature and air isolation conditions. Coke acts as a heating agent, carbon skeleton, reducing agent, carburizing agent, etc. in the blast furnace for producing molten iron. The quality of coke directly affects the production of molten iron. [0003] The moisture content of coke is an important factor to measure the quality of coke, which can directly affect the production of blast furnace. At present, some enterprises adopt CDQ technology, so the coke moisture is very low, below 1%. However, there are still many domestic enterprises adopting wet coke quenching technology, and the moisture content of coke is generally 5-10%. The moisture of coke is generally interna...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N5/02
Inventor 王玉明胡德生彭新
Owner XINJIANG BAYI IRON & STEEL
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