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Coking method of lignite addition and coal charge

A technology for lignite and blending, applied in the coking field, can solve the problems of insufficient supply of refined coal, high cost of refined coal, and low reserves, etc., and achieve the effects of expanding the range of coal types, facilitating popularization and application, and facilitating production and operation.

Inactive Publication Date: 2010-07-28
PANGANG GROUP VANADIUM TITANIUM & RESOURCES +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the cost of clean coal is high and the reserves are small. With the continuous development of the coking industry, the demand for coking coal is increasing, and the demand for clean coal is increasing, making the supply of clean coal in short supply.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 12g bitumen and 20g lignite are mixed evenly, and its weight ratio is 0.6: 1.0, obtains 32g of mixed material, then adds mixed material and is in the coking coal, fat coal, gas coal and lean coal of ratio listed in Table 2, obtains 400g Furnace coal, wherein the mixture of bitumen and lignite accounts for 8% of the total weight of the furnace coal, and the proportion of the furnace coal is shown in Table 2.

[0027] Each coal type proportioning unit in table 2 charging furnace coal: (weight %)

[0028] coal type

coking coal

Fat coal

gas coal

lean coal

Mixture of asphalt and lignite

Proportion

40

30

17

5

8

[0029] Put 400g of furnace-charging coal shown in Table 2 into a corundum crucible (Φ80mm×110mm), then press the coal in the crucible with a 3kg weight for 5 minutes, seal it, and put it into a muffle furnace (400mm×150mm×200mm) for dry distillation , the heating rate is 10°C / min, the temperature is...

Embodiment 2

[0032] 17.8g pitch and 22.2g lignite are mixed homogeneously, and its weight ratio is 0.8: 1.0, obtains mixed material 40g, then mixed material is added in coking coal, fat coal, gas coal and lean coal that the ratio of listed in table 3 is mixed with coal, 400g of furnace coal was obtained, wherein the mixture of bitumen and lignite accounted for 10% of the total weight of furnace coal, and the proportion of furnace coal was shown in Table 3.

[0033] Table 3 Proportion of various coal types in the furnace coal Unit: (weight %)

[0034] coal type

[0035] Put 400g of furnace coal whose composition is shown in Table 3 into a corundum crucible (Φ80mm×110mm), then press the coal in the crucible with a 3kg weight for 5min, seal it, and put it into a muffle furnace (400mm×150mm×200mm) Dry distillation, the heating rate is 12°C / min, the temperature is raised to 1050°C, the temperature is kept constant for 100min, and the coke is quenched with water. The measured coke rea...

Embodiment 3

[0037] 27g bitumen and 27g lignite are mixed evenly, and its weight ratio is 1.0: 1.0, obtains 54g of mixed material, then adds mixed material and is in the coking coal, fat coal, gas coal and lean coal of ratio listed in table 4, obtains 400g Furnace coal, wherein the mixture of bitumen and lignite accounts for 13.5% of the total weight of furnace coal, and the proportion of furnace coal is shown in Table 4.

[0038] Table 4 Furnace coal in each coal type proportioning unit: (weight %)

[0039] coal type

[0040] Put 400g of furnace-charging coal whose composition is shown in Table 4 into a corundum crucible (Φ80mm×110mm), then press the coal in the crucible with a 3kg weight for 5min, seal it, and put it into a muffle furnace (400mm×150mm×200mm) Dry distillation, the heating rate is 15°C / min, the temperature is raised to 1100°C, the temperature is kept constant for 110min, and the water is taken out to quench the coke. The measured coke reactivity is 39.58%. Compa...

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Abstract

The invention discloses a coking method of lignite addition and coal charge. The method of the invention comprises: mixing evenly 5 percent to 20 percent of mixture of lignite and asphalt to be made into coal charge, and then performing coking to produce lignite coke. The coke produced by the coking method and the coal charge has greatly improved quality and reaches the goal of coking lignite addition and reducing the coking cost.

Description

technical field [0001] The invention relates to coking technology, in particular to a coking method with brown coal and furnace coal mixed with brown coal. Background technique [0002] Lignite accounts for 1 / 3 of the world's coal resources. In hard coal (bituminous coal and anthracite) resources, coking coal is less than 1 / 10 of the resources. Due to the rapid expansion of the coking industry in recent years, the demand for coking coal has increased day by day, which has made the already tense situation of coking coal resources increasingly serious, and the price of coking coal has been increasing day by day, resulting in great fluctuations in the quality of coke in related companies. Costs also increased significantly. In the prior art, coking coal is generally prepared by mixing bituminous coal with caking properties (ie, gas coal, fat coal, coking coal, lean coal) and cleaned coal. However, the cost of cleaned coal is high and the reserves are small. With the continuo...

Claims

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Application Information

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IPC IPC(8): C10B57/06
Inventor 黄先佑祝永强
Owner PANGANG GROUP VANADIUM TITANIUM & RESOURCES
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