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A method for detecting water absorption of coke

A detection method and water absorption technology are applied in the detection field of coke water absorption, which can solve the problems of reducing smelting strength, expensive inspection equipment and high cost, and achieve the effects of low cost, good technical and economic indicators, and simple equipment.

Inactive Publication Date: 2011-12-21
XINXING DUCTILE IRON PIPES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Tamping coke meets the requirements of blast furnace coke to a certain extent, but because of the production process, the density of ramming coke is higher than that of metallurgical coke, and it is more compact. After being loaded into the blast furnace, the gas permeability of the blast furnace is affected to a certain extent, reducing Smelting strength
The porosity of coke and the air permeability index of coke can reflect this change of coke, but the inspection equipment is relatively expensive, the inspection method is also relatively cumbersome, and the cost is also high. It is urgent to develop a simple method that can detect the coke. Therefore, the concept of water absorption of coke and a simple measurement method are proposed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] (1) Take 3kg of coke, crush the coke to 10-20mm, sieve the crushed coke horizontally with a 10mm square hole sieve until no coke leaks out, and shrink the remaining coke on the sieve into 500g as a sample.

[0017] (2) Put the sample into a porcelain dish and spread it flat, put the porcelain dish in a drying oven to dry for 1 hour, take out the porcelain dish and lower it to room temperature to obtain dry coke, and the temperature of the drying oven is 150°C.

[0018] (3) Weigh 200g of dry coke into a container, add water until the dry coke is submerged, and soak for 24 hours.

[0019] (4) Filter out the water from the coke soaked in the container in step (3), wrap the coke with dry cotton cloth and shake it, and use the cotton cloth to absorb the water on the surface of the coke until there is no clear water Get wet coke, the quality of wet coke is 300g.

[0020] (5) Calculation of water absorption of coke: water absorption of coke = (300-200) ÷ 200 × 100% = 50%.

Embodiment 2

[0022] (1) Take 5kg of coke, crush the coke to 10-20mm, sieve the crushed coke horizontally with a 10mm square hole sieve until no coke leaks out, and shrink the remaining coke on the sieve to 800g as a sample.

[0023] (2) Put the sample into a porcelain dish and lay it flat, put the porcelain dish in a drying oven to dry for 2 hours, take out the porcelain dish and lower it to room temperature to obtain dry coke, the temperature of the drying oven is 160°C.

[0024] (3) Weigh 400g of dry coke into a container, add water until the dry coke is submerged, and soak for 36 hours.

[0025] (4) Filter out the water from the coke soaked in the container in step (3), wrap the coke with dry cotton cloth and shake it, and use the cotton cloth to absorb the water on the surface of the coke until there is no clear water Get wet coke, the quality of wet coke is 550g.

[0026] (5) Calculation of water absorption of coke: water absorption of coke = (550-400) ÷ 400 × 100% = 37.5%.

Embodiment 3

[0028] (1) Take 4kg of coke, crush the coke to 10-20mm, sieve the crushed coke horizontally with a 10mm square hole sieve until no coke leaks out, and shrink the remaining coke on the sieve to 600g as a sample.

[0029] (2) Put the sample into a porcelain dish and spread it flat, put the porcelain dish in a drying oven to dry for 0.5 hours, take out the porcelain dish and lower it to room temperature to obtain dry coke, the temperature of the drying oven is 120°C.

[0030] (3) Weigh 300g of dry coke into a container, add water until the dry coke is submerged, and soak for 12 hours.

[0031] (4) Filter out the water from the coke soaked in the container in step (3), wrap the coke with dry cotton cloth and shake it, and use the cotton cloth to absorb the water on the surface of the coke until there is no clear water Get wet coke, the quality of wet coke is 420g.

[0032] (5) Calculation of water absorption of coke: water absorption of coke = (420-300) ÷ 300 × 100% = 40%.

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PUM

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Abstract

The invention discloses a method for detecting water absorption of coke, comprising the following steps: (1) pulverizing the coke to 10-20 mm, sieving it horizontally with a 10 mm square-hole sieve, and taking the coke on the sieve as a sample; Put the sample into a drying box to dry, take out and cool down to room temperature to get dry coke; (3) add water to the dry coke to submerge the dry coke, and soak it; (4) filter the water out of the soaked coke, and use a cotton cloth to remove the water on the surface of the coke. Absorb it, and weigh the wet coke mass; (5) Calculate coke water absorption: coke water absorption = (wet coke mass - sample mass) ÷ sample mass × 100%. The method and the required equipment of the invention are simple and low in cost, and the gas permeability and combustion performance of the coke are evaluated by detecting the water absorption of the coke to guide the production.

Description

technical field [0001] The invention relates to a method for detecting water absorption of coke. Background technique [0002] At present, with the continuous development of the steel industry and the continuous expansion of the production capacity of the steel industry, the demand for coke is also increasing, and the coking coal is increasingly in short supply. Countries all over the world are seeking to use weakly caking and non-caking coal for coking. The new technology is born to expand the resources of coking coal and to apply coke production technology. Tamping coke meets the requirements of blast furnace coke to a certain extent, but because of the production process, the density of ramming coke is higher than that of metallurgical coke, and it is more compact. After being loaded into the blast furnace, the gas permeability of the blast furnace is affected to a certain extent, reducing Smelting strength. The porosity of coke and the air permeability index of coke ca...

Claims

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Application Information

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IPC IPC(8): G01N5/02
Inventor 杨广洲宋宇辉
Owner XINXING DUCTILE IRON PIPES CO LTD
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