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Coke for furnace protection and production method thereof

A production method and coke technology, which are applied in the field of furnace protection coke with improved quality and the production field thereof, can solve the problems of unmentioned coke quality and high cost of technical solutions, and achieve the effects of simplified operation, low production cost and reduced production cost.

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

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Problems solved by technology

However, since high-titanium slag is produced by smelting, generally, high-titanium slag is prepared by electrolytically reducing titanium-containing minerals such as vanadium-titanium magnetite concentrate or titanium concentrate in an electric arc furnace, so because the patent discloses the use of The high titanium slag caused the relatively high cost of its technical solution
Also, there is no mention of improvements in coke quality (eg, thermal reactivity) in this patent publication

Method used

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  • Coke for furnace protection and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Take 400g of coal in the ratio shown in Table 1 and 2g of vanadium-titanium magnetite concentrate shown in Table 2, mix the two evenly, and then put them into a corundum crucible (Φ80mm×110mm), and then use a 3kg weight to put the The coal is compacted for 5 minutes, the counterweight is removed and sealed, put into a muffle furnace (400mm×150mm×200mm) for dry distillation, the heating rate is 3°C / min, the temperature is raised to 950°C, and the temperature is kept constant for 150min, and the coke is taken out and quenched with water to obtain coke 321.6 g, measured coke thermal reactivity (CRI) is 41.16%. The coke components include by weight percentage: 88.42% of fixed carbon, 10.14% of ash, 1.44% of volatile matter and 0.60% of S. Contains 0.82% TiO by weight in the ash 2 , 3.28% TFe, 0.075% V 2 o 5 .

[0044] Because the proportion of vanadium-titanium-magnetite concentrate is increased in the above-mentioned coke, the reactivity of the coke is improved by 0.09...

Embodiment 2

[0046] Take 400g of coal in the ratio shown in Table 1 and 8g of vanadium-titanium magnetite concentrate shown in Table 2, mix the two evenly, then put them into a corundum crucible (Φ80mm×110mm), and then use a 3kg weight to put the The coal is compacted for 5 minutes, the counterweight is removed and sealed, put into a muffle furnace (400mm×150mm×200mm) for dry distillation, the heating rate is 8°C / min, the temperature is raised to 1050°C, and the temperature is kept constant for 60 minutes. Take out and quench with water to obtain coke 326.4 g, measured coke thermal reactivity (CRI) is 40.35%. The coke components include by weight percentage: 85.76% of fixed carbon, 12.96% of ash, 1.28% of volatile matter and 0.52% of S. Contains 2.25% TiO by weight in the ash 2 , 8.56% TFe, 0.097% V 2 o 5 .

[0047] Because the proportion of vanadium-titanium-magnetite concentrate is increased in the above-mentioned coke, the reactivity of the coke is improved by 0.90 percentage points...

Embodiment 3

[0049] Take 400g of coal in the ratio shown in Table 1 and 9.5g of vanadium-titanium magnetite concentrate shown in Table 2, mix the two evenly, and then put them into a corundum crucible (Φ80mm×110mm), and then use a 3kg weight to put the The coal is compacted for 5 minutes, the counterweight is removed and sealed, put into a muffle furnace (400mm×150mm×200mm) for dry distillation, the heating rate is 10°C / min, the temperature is raised to 1000°C, and the temperature is kept for 150min, and the coke is taken out and quenched with water to obtain coke 348g, and the measured coke thermal reactivity is 40.67%. The components of coke are calculated by weight percentage: 85.17% of fixed carbon, 13.69% of ash, 1.14% of volatile matter and 0.56% of S. Contains 2.6% TiO by weight in the ash 2 , 10.62% TFe, 0.098% V 2 o 5 .

[0050] Due to the increase of the ratio of vanadium-titanium magnetite concentrate in the above-mentioned coke, the reactivity of the coke has been improved ...

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Abstract

The invention provides a coke for furnace protection and a production method thereof. The coke for furnace protection comprises the following components in percentage by weight: 79-90% of fixed carbon, 9-18.5% of ash content, 0.55-1.5% of volatile and 0.45-1.0% of S, wherein the ash content comprises the following components in percentage by weight: 0.82-9.12% of TiO2 and 0.075-0.214% of V2O5. The coke of the invention has the characteristic of improving coke hot performance (namely the cold-to-hot reactivity of the coke (CRI)), has low production cost and can ensure long-term stable operation of a blast furnace while performing the action of protecting the furnace.

Description

technical field [0001] The invention relates to the technical field of iron and steel metallurgy, in particular to a coke for furnace protection with improved quality and a production method thereof. Background technique [0002] Coke is an important raw material for blast furnace smelting, and its functions include: heat source; reducing agent and carburizing agent; material column skeleton, etc. Due to the substantial increase in the price of coking coal in recent years, the price of coke has risen accordingly, and the price of coke has already occupied a large part of the cost of blast furnace smelting. Moreover, with the continuous improvement of blast furnace smelting intensity, the burning loss of blast furnace hearth increases, which affects the technical and economic indicators of blast furnace production to a certain extent, and also leads to coke quality related requirements (including hot state properties, cold state strength, etc. ) is increasing day by day. Th...

Claims

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Application Information

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IPC IPC(8): C10B57/06C21B5/00
Inventor 黄先佑蒋胜文永才舒文东
Owner PANGANG GROUP VANADIUM TITANIUM & RESOURCES
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