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Briquette coal used for burning lime in blast furnace and prepared from semi coke powder as main material and preparation method of briquette coal

A technology of main raw material, blue carbon powder, applied in the field of briquette for calcining lime in blast furnace and its preparation, can solve the problem of high price of anthracite lump coal, and achieve the effect of improving market benefit value and optimizing use

Inactive Publication Date: 2015-04-01
三门峡中兴节能环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to process requirements, calcium oxide quality and large-scale non-polluting production, the coal used for burning lime must be anthracite lump coal, which is expensive

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Blast furnace lime coal briquettes with semi-coke powder as the main raw material, including semi-coke powder raw materials with 60% fixed carbon and binders for bonding the above-mentioned semi-coke powder raw materials;

[0024] The described coal briquettes for blast furnace burnt lime with semi-coke powder as main raw material, its preparation method is:

[0025] Add 35kg of binder to each ton of semi-coke powder, after stirring and mixing, add 180kg of neutral water with pH 7 and then fully stir until it reaches a mass of 30cm in hands and falls freely, and then enters the molding machine for molding, and the formed semi-coke type The coal is sent to a drying furnace at about 145°C for drying, and when the moisture is less than 2%, it is released, and the mechanical strength can reach more than 1500N.

[0026] Described binder comprises the following raw materials according to weight percent composition:

[0027] 5% epoxy resin, 39% white tiger essence, 4% 502 rub...

Embodiment 2

[0030] Coal briquettes for blast furnace lime with semi-coke powder as the main raw material, including semi-coke powder raw materials with fixed carbon not less than 60% and binders for bonding the above-mentioned semi-coke powder raw materials;

[0031] The described coal briquettes for blast furnace burnt lime with semi-coke powder as main raw material, its preparation method is:

[0032] Add 40kg of binder for each ton of semi-coke powder, after stirring and mixing, add 210kg of neutral water with pH 7 and then fully stir until it reaches a mass of 30cm in hands and falls freely, and then enters the molding machine for molding, and the formed semi-coke type The coal is sent to a drying furnace at about 150°C for drying, and when the moisture is less than 2%, it is released from the furnace, and the mechanical strength can reach more than 1500N, that is, the briquette coal for blast furnace lime with semi-coal powder as the main raw material.

[0033] Described binder compr...

Embodiment 3

[0037] Coal briquettes for blast furnace lime with semi-coke powder as the main raw material, including semi-coke powder raw materials with fixed carbon not less than 60% and binders for bonding the above-mentioned semi-coke powder raw materials;

[0038] The described coal briquettes for blast furnace burnt lime with semi-coke powder as main raw material, its preparation method is:

[0039] Add 50kg of binder for each ton of semi-coke powder, after stirring and mixing, add 250kg of neutral water with pH 7 and then fully stir until it reaches a mass of 30cm in hands and falls freely, then enters the molding machine for molding, and the formed semi-coke type The coal is sent to a drying furnace at about 150°C for drying, and when the moisture is less than 2%, it is released from the furnace, and the mechanical strength can reach more than 1500N, that is, the briquette coal for blast furnace lime with semi-coal powder as the main raw material.

[0040] Described binder comprises...

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PUM

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Abstract

The invention discloses briquette coal used for burning lime in a blast furnace and prepared from semi coke powder as a main material. The briquette coal comprises a semi coke powder raw material of which the fixed carbon is not less than 60% and a binder for binding the semi coke powder raw material. A preparation method of the briquette coal comprises the specific following steps: adding 35-50kg of the binder into each ton of semi coke powder, mixing while stirring, adding 180-250kg of neutral water having pH of 7, fully stirring until the mixture is grabbed by a hand to form a ball and is not dispersed when the ball freely falls from 30cm, feeding the mixture into a molding machine for molding, feeding the molded semi coke briquette coal into a drying oven of which the temperature is about 150 DEG C for drying and discharging the molded semi coke briquette coal out of the oven until the moisture content is less than 2% and the mechanical strength can reach 1500N or more to obtain the briquette coal used for burning lime in the blast furnace and prepared from semi coke powder as the main material. The briquette coal used for burning lime in the blast furnace and prepared from semi coke powder as the main material, which is disclosed by the invention, is in full line with the requirements of burning lime in the blast furnace and can replace smoke-free block coal, the cost of each ton of fire coal can be decreased by 300-600 yuan, the semi coke powder is greatly and optimally applied and the market interest value of the semi coke powder is improved.

Description

technical field [0001] The invention relates to the field of blast furnace lime-burning molded coal, in particular to a blast furnace lime-burning molded coal with blue charcoal powder as the main raw material and a preparation method thereof. Background technique [0002] Semi-coke, semi-coke is made of high-quality Jurassic clean coal abundant in Shenfu Coalfield or high-quality coal similar to Shenfu long-flame coal (such as lean coal, weakly caking coal, etc.), as a new type of carbon The material, with its characteristics of high fixed carbon, high specific resistance, high chemical resistance, low ash content, low aluminum, low sulfur and low phosphorus, is widely used in calcium carbide, ferroalloy, ferrosilicon and silicon carbide to gradually replace metallurgical coke The production of such products has become an irreplaceable carbon material. [0003] Semi-coke (also known as semi-coke), the structure is required to be massive, the particle size is generally abov...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L5/10C10L5/04
CPCY02E50/30
Inventor 韩维国潘牧
Owner 三门峡中兴节能环保科技有限公司