A method for reducing ash content in high ash coal slime

A technology for coal slime and high ash, which is applied in the field of reducing ash content in high ash coal slime, can solve problems such as ineffective application in industrial fields, and achieves the effects of low cost, obvious effect, and reduction of ash content and sulfur content

A technology for coal slime and high ash, which is applied in the field of reducing ash content in high ash coal slime, can solve problems such as ineffective application in industrial fields, and achieves the effects of low cost, obvious effect, and reduction of ash content and sulfur content

CN105154165BInactive Publication Date: 2017-05-31江苏徐矿能源股份有限公司
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] (1) Collect three equal samples from a pile of high-ash coal slime by random sampling method for testing, and obtain the average value through three sets of testing data, namely, the ash content is 37.63%, and the calorific value is 13.63MJ / kg;

[0020] (2) flatten the high-ash coal slime in the coal slime pond, the thickness of the high-ash coal slime after described flattening is 5~12cm, after ditching, the above-mentioned coal slime is hoeed and then sprinkled;

[0021] (3) The plant seeds are subjected to degerming and detoxification treatment, then soaked in clear water for 12 to 15 hours, and germinated for 1 to 2 days. In order to make full use of resources, the present embodiment selects lawn seeds as the cultivation object;

[0022] (4) sow the above-mentioned seeds of accelerating germination, the row width of the sowing row is 30~50cm, sprinkle water once every 2~3 days, and the cultivation temperature is 25 ℃~30 ℃; in order to make the lawn seeds have a more ...

Embodiment 2

[0029] (1) Collect three equal samples from a pile of high-ash coal slime by random sampling method for testing, and obtain the average value through three sets of testing data, namely, the ash content is 37.63%, and the calorific value is 13.63MJ / kg;

[0030] (2) flatten the high-ash coal slime in the coal slime pond, the thickness of the high-ash coal slime after described flattening is 5~12cm, after ditching, the above-mentioned coal slime is hoeed and then sprinkled;

[0031] (3) The plant seeds are subjected to degerming and detoxification treatment, then soaked in clear water for 12 to 15 hours, and germinated for 1 to 2 days. In order to make full use of resources, the present embodiment selects bean seeds as the training objects;

[0032] (4) sow the above-mentioned seeds of accelerating germination, the row width of the sowing row is 30~50cm, sprinkle water once every 2~3 days, and the cultivation temperature is 25 ℃~30 ℃; in order to make the lawn seeds have a more su...

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Abstract

A method for reducing ash in inferior slime comprises the following steps: evenly spreading high ash slime in a slime pool to make the thickness of the spread high ash slime be 5-12cm, ditching, loosening the slime by using a hoe, and sprinkling water; carrying out degermation and detoxification treatment on plant seeds, immersing the treated seeds in clear water for 12-15h, and accelerating germination for 1-2d; sowing the germination accelerated seeds according to the line width of sowing lines of 30-50cm, sprinkling water once every 2-3 days, culturing at 25-30DEG C, continuously culturing for 1-2 months after germination to form bud seedlings, and carrying out regular sampling and testing on the high ash slime in the culture period; completely pulling up the bud seedlings, screening out bud seedling roots, and carrying out water sprinkling culture for 1d; and removing the slime out of the slime pool to obtain an empty slime pool used for next batch of slime treatment. The method has the advantages of simple operation, low cost, obvious reduction of the ash content and the sulfur content of treated slime, and no pollution to environment in the treatment process, and the produced slime can be directly applied in the industrial field.

Description

technical field [0001] The invention relates to the technical field of coal processing, in particular to a method for reducing ash in high-ash coal slime. Background technique [0002] Coal slime generally refers to the semi-solid formed by pulverized coal containing water. It is a product in the coal production process. According to different varieties and different formation mechanisms, coal slime can be divided into the following three categories: [0003] (1) Flotation tailings in coking coal preparation plants: the properties of this type of coal slime are similar to those of washed gangue or medium coal, with higher ash content and lower calorific value; [0004] (2) Coal slime produced by coal-water mixture: such as the coal slime produced in thermal coal washing plants and the coal slime produced after hydraulic transportation of coal. Some of this kind of slime are of better quality than raw coal, and they are often mixed with in finished coal; [0005] (3) Coal s...

Claims

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Application Information

Patent Timeline
31 May 2017
Publication
CN105154165B
IPC
C10L9/00
Inventors
位玉红; 陈文秀