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Coal-rock blending method suitable for tamping coking

A technology of coal blending and coal-rock blending, which is applied in the field of coal-rock blending for tamping coking, can solve the problem of not fully considering the influence of active components and inert components, and not considering the reasonable control of low-metamorphic coal blending in tamping coal blending problems, failure to fully consider the guiding role of vitrinite, etc., to achieve the effect of improving coke quality, expanding the use of coking coal resources, and refining the coal blending process

Inactive Publication Date: 2013-09-18
WUHAN UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Although the above coal-rock blending method has many advantages, it is only suitable for top-loading coking. It has the following shortcomings for tamping coking. Second, the influence of active components and inert components on the coking process of coking coal is not fully considered; third, the guiding role of the vitrinite random reflectance distribution histogram in coal blending coking is not fully considered

Method used

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  • Coal-rock blending method suitable for tamping coking
  • Coal-rock blending method suitable for tamping coking
  • Coal-rock blending method suitable for tamping coking

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A coal-rock blending method suitable for tamping and coking, the method comprises the following steps:

[0040] The first step, according to national standards, for 12 kinds of single coals that meet the basic quality (coking coal 1 # - coking coal 12 # ), the ash content, volatile matter, total sulfur, cohesion index and colloidal layer index were tested, and the test results are shown in Table 1.

[0041] Table 1 Process properties of single coal

[0042]

[0043]

[0044] Then for the above 12 kinds of single coal (coking coal 1 # - coking coal 12 # ) of vitrinite random reflectance Re distribution ratio, vitrinite maximum average reflectance and coal rock micro-components, and then calculate the active-inert ratio A / I of a single coal for coking according to the coal rock micro-components. complex, so not listed) as shown in Table 2.

[0045] Table 2 Coal rock properties of single coal

[0046]

[0047] The second step: According to the activity-ine...

Embodiment 2

[0070] A coal-rock blending method suitable for tamping and coking, the method comprises the following steps:

[0071] The first step, according to national standards, for 12 kinds of single coals that meet the basic quality (coking coal 1 # ~ coking coal 12 # ) of ash, volatile matter, total sulfur, cohesion index and colloidal layer index for testing.

[0072] The single coal process property used in this embodiment is the same as the first step of embodiment 1, and the test results are as shown in Table 1 of embodiment 1.

[0073] Then for the above 12 kinds of single coal (coking coal 1 # ~ coking coal 12 # ) of vitrinite random reflectance Re distribution ratio, vitrinite maximum average reflectance and coal rock microcomponents are detected respectively, and then the active-inert ratio A / I of a single coal for coking is calculated according to the coal rock microcomponents. The detection and calculation results are shown in Table 2 of the first step of Example 1.

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Abstract

The invention relates to a coal-rock blending method suitable for tamping coking. The technical scheme includes: step one, subjecting single coal for coking to detection of processes and coal-rock properties and calculating an active-idle ratio A / I; step two, matching according to the active-idle ratio A / I, the maximum mean reflectivity of vitrinite and distribution proportion of random reflectivity Re of the vitrinite, and if the A / I of blended coal after blending is 2.0-2.5, 1.00-1.40%, and distribution histogram of the random reflectivity Re of the vitrinite of the blended coal is continuous, then starting step four; step three, repeating the step two if the conditions are not met; step four, taking blended coal samples for detection of the maximum thickness of gelatinous layer Y value, if the Y value ranges from 10mm to 15mm, then completing the coal blending; step five, if the Y value is not between 10mm to 15mm, circulating the step two; and step six, furnacing for coking after tamping, wherein the tamping density is 1.10-1.15g / cm3. The coal-rock blending method suitable for the tamping coking can refine the blended coal after the tamping coking, expand utilization range of coking coal resources and improve coke quality.

Description

technical field [0001] The invention belongs to the technical field of coal-rock blending, and in particular relates to a coal-rock blending method suitable for tamping and coking. technical background [0002] my country is rich in coking coal resources, but mainly high-volatile coal (including gas coal and 1 / 3 coking coal), while fat coal, coking coal, and lean coal together account for less than 50% of coking coal reserves. Among them, about half of the fat coal and lean coal are high-sulfur coal, and about 30% of the coking coal is high-sulfur and high-ash coal. The resource situation has determined that my country's high-quality coking coal has been in short supply for a long time. Stamping coking process is a method that can increase the amount of high volatile, weakly caking or even non-caking coal in coal blending to expand the coking raw coal. It has become a mature coking process and is widely used at home and abroad. [0003] At present, relying on industrial an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10B57/04
Inventor 王光辉舒大凡赵新平张立岗严铁军郝发潮石晓明刘小静田永胜罗万江
Owner WUHAN UNIV OF SCI & TECH
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